CN106554099B - Portable water purifying equipment - Google Patents

Abstract

A portable water purification apparatus comprising a housing; the cover body is detachably connected with the shell, and a suction nozzle is arranged on the cover body; the filter element is arranged in the inner cavity of the shell, and a water outlet of the filter element is communicated with the suction nozzle; wherein the filter core includes the preliminary treatment filter core and the advanced treatment filter core of intercommunication each other, the water inlet of filter core is located on the preliminary treatment filter core, the delivery port of filter core is located on the advanced treatment filter core. Above-mentioned portable water purification unit, injected into in the casing and waited to cross the water back, through the surface of hydraulic pressure casing, make and wait to cross the water behind the filter core, under the dual filtration of the preliminary treatment filter core of filter core and advanced treatment filter core, wait to cross the water and flow to the suction nozzle by the delivery port of filter core, the user can drink safe drinking water, simple structure after the filtration through the suction nozzle, conveniently carries and convenient to use.

Description

Portable water purifying equipment

The present application claims priority of chinese invention application 2015, application No. 201510617757.X entitled "portable water purification apparatus" filed 24/09/2015, which is incorporated herein by reference in its entirety.

Technical Field

The invention relates to the field of water purification, in particular to portable water purification equipment.

Background

The water content in human body is nearly 70%. All physiological reactions in the body can not leave water, and the water is an indispensable substance for maintaining the life activities of the body and keeping the health, so that the water is a life source and an indispensable important resource for human beings, and the clean water is a necessity for healthy life of people. On one hand, the existing water resource is gradually damaged to the natural environment by people, so that the quality and the total amount of the water resource are continuously reduced, and the life of people is seriously influenced.

On the other hand, with the continuous rise of outdoor sports, people are more and more interested in outdoor activities, and outdoor activities such as adventure, camping, wild fishing and the like are developed rapidly. People do activities outdoors, except for necessary grains, water is the most important, the demand of people for water is more obvious in outdoor activities, but in outdoor activities, the traditional method for carrying drinking water is to utilize a large-capacity container to carry a large amount of drinking water.

However, it is not practical to carry large volumes of drinking water using large capacity containers, which requires that we continue to utilize the existing water resources outdoors. Most outdoor water resources cannot be directly used as drinking water, and the drinking water can be drunk only by filtering and purifying. Furthermore, when a person is in an emergency such as an earthquake or a flood, the life health of the person is threatened because the person cannot obtain clean drinking water in time due to condition restrictions.

Disclosure of Invention

In view of the above, it is necessary to provide a portable water purification apparatus with convenient use and excellent water quality.

The technical scheme of the invention is as follows:

a portable water purification apparatus comprises

A housing;

the cover body is detachably connected with the shell, and a suction nozzle is arranged on the cover body; and

the filter element is arranged in the inner cavity of the shell, and a water outlet of the filter element is communicated with the suction nozzle;

wherein the filter core includes the preliminary treatment filter core and the advanced treatment filter core of intercommunication each other, the water inlet of filter core is located on the preliminary treatment filter core, the delivery port of filter core is located on the advanced treatment filter core.

In one embodiment, the pretreatment filter element is an activated carbon fiber filter element, and the advanced treatment filter element is an ultrafiltration membrane filter element.

In one embodiment, the depth treatment cartridge is disposed between the cover and the pretreatment cartridge.

In one embodiment, the pretreatment cartridge and the depth treatment cartridge are threadably connected.

In one embodiment, the depth treatment filter element is provided with internal threads, and the protrusion part of the pretreatment filter element is provided with external threads.

In one embodiment, the water inlet of the pretreatment filter element is positioned at one end far away from the cover body.

In one embodiment, the length ratio of the pretreatment filter element to the advanced treatment filter element is 1: 0.8-2.

In one embodiment, the ratio of the outer diameter of the pretreatment filter element to the diameter of the inner cavity of the shell is 1: 1.3-2, and the ratio of the outer diameter of the advanced treatment filter element to the diameter of the inner cavity of the shell is 1: 1.3-2.

In one embodiment, the housing is made of a compressible material.

In one embodiment, the suction nozzle is a dustproof suction nozzle, and a dustproof cover is further sleeved on the cover body.

After the water to be filtered is injected into the shell, the water to be filtered flows out from the water outlet of the filter element to the suction nozzle by pressing the outer surface of the shell after the water to be filtered passes through the filter element, and the filtered safe drinking water can be drunk by a user through the suction nozzle under the double filtration of the pretreatment filter element and the advanced treatment filter element of the filter element, so that the untreated river water, lake water, rainwater and other dirty water can be directly added into the equipment when the user is outdoors or cannot obtain clean drinking water in sudden situations, and the drinking water can reach the standard of direct drinking water through the secondary filtration system under the action of extrusion force, namely the drinking water is filtered and drunk immediately, is convenient and quick, and can easily meet the safe drinking water requirements of outdoor activities such as outing, hiking, donkey friends, climbing and the like and emergency, military and rescue, and meanwhile, the portable water purifying equipment of the embodiment has a simple structure, is convenient to carry and use.

Drawings

FIG. 1 is a schematic diagram of a portable water purification apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a housing according to an embodiment of the present invention;

FIG. 3 is a schematic view of a connection structure of a dust cap and a housing according to an embodiment of the present invention;

FIGS. 4-1 and 4-2 are schematic views of a dust cap according to an embodiment of the present invention in a structure and a usage state, respectively;

FIG. 5 is a schematic cross-sectional view of a portable water purification apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a pretreatment cartridge according to one embodiment of the present disclosure;

fig. 7 is a schematic diagram of a depth treatment cartridge in accordance with an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, the present embodiment provides a portable water purifying apparatus 10, wherein the portable water purifying apparatus 10 includes a housing 100, a cover 200, and a filter element 300. The housing 100 is detachably connected to the cover 200. The cover 200 is provided with a suction nozzle 210. The cartridge 300 is installed in the inner cavity of the housing 100. The outlet of the cartridge 300 communicates with the suction nozzle 210. The filter element 300 comprises a pretreatment filter element 310 and a deep treatment filter element 320 which are communicated with each other, wherein the water inlet of the filter element 300 is positioned on the pretreatment filter element 310, and the water outlet of the filter element 300 is positioned on the deep treatment filter element 320.

In the portable water purifying device 10, after the water to be filtered is poured into the housing 100, the water to be filtered passes through the filter element 300 through the outer surface of the hydraulic housing 100, and then flows out of the water outlet of the filter element 300 to the suction nozzle 210 under the dual filtration of the pretreatment filter element 310 and the advanced treatment filter element 320 of the filter element 300, so that a user can drink the filtered safe drinking water through the suction nozzle 210, and therefore, when the user is outdoors or encounters an emergency situation and cannot obtain clean drinking water, the untreated dirty water such as river water, lake water, rainwater and the like can be directly added into the device, and under the action of the extrusion force, the standard of direct drinking water is achieved through the secondary filtration system, namely, the water is filtered and drunk, which is convenient and fast, and can easily meet the safe drinking water requirements of outdoor activities such as outing, walking, donkey friends, riding, mountain climbing and the like and emergency, military and rescue, and meanwhile, the portable water purifying device of the embodiment, is convenient to carry and use.

Referring to fig. 2, in order to facilitate the extrusion of the casing 100, in an embodiment, the casing 100 includes a first section 110, a second section 120, and a third section 130, wherein the first section 110 protrudes to a side away from the center of the casing 100, the second section 120 protrudes to a side close to the center of the casing, and the third section 130 protrudes to a side away from the center of the casing. The second section 120 of the housing 100 thus forms a hand-held portion that is easily squeezed. For example, the second section is provided with an elastic portion for being deformed when being pressed by force so as to press the housing. For another example, the resilient portion is annular; for another example, the elastic part is provided with a first deformation elastic structure and a second deformation elastic structure, wherein the deformation degree of the first deformation elastic structure is greater than that of the second deformation elastic structure, so that the deformation is not uniform during stressed extrusion, and the elastic part is easy to restore to the original shape in an unstressed state; for another example, the second section is provided with a plurality of the elastic parts connected with each other; if each elastic part protrudes towards the inside of the shell, an elastic compression ring-shaped structure is arranged and used for generating deformation when stressed so as to extrude the shell and restore the original shape under the non-stressed state, and therefore a better extrusion effect is achieved. For example, the elastic compression ring-shaped structure is the first deformation elastic structure. For another example, the elastic compression ring-shaped structure is internally wrapped with a second shape-changing elastic structure, for example, the second shape-changing elastic structure is a plastic ring with elasticity.

In one embodiment, the housing 100 has a regular structure, for example, the housing 100 has a regular cylindrical structure; as another example, the housing 100 is a regular hollow cylinder structure. As shown in fig. 2, the housing 100 has a central axis 101, and the first segment 110 protrudes toward a side away from the central axis 101 and forms an arc-shaped structure by 45 degrees in an oblique direction; the second section 120 is recessed toward a side near the central axis 101; the third segment 130 protrudes downward at an angle of 45 degrees to the side away from the central axis 101 to form an arc structure. The first, second and third sections 110, 120, 130 of the housing 100 thus form a hand-held portion that is easily gripped and squeezed. For another example, the second segment 120 has a wave-shaped groove structure on a side close to the central axis 101, and each trough of the wave-shaped groove structure is an elastic portion.

Further, the inner wall of the housing 100 is smoothly disposed. So that there is no friction between the water to be filtered inside the casing 100 and the inner wall of the casing 100 when the casing 100 is pressed, and the pressure of pressing the water to be filtered is prevented from being consumed by the friction surface with the inner wall of the casing 100, thereby improving the efficiency of pressing the casing 100.

Further, the outer walls of the first, second and third sections 110, 120, 130 of the casing 100 are smoothly transitioned. For example, the first, second and third segments 110, 120, 130 are integrally formed. Therefore, all parts of the first section 110, the second section 120 and the third section 130 are stressed evenly in the process of squeezing the shell 100 by a user, and the efficiency of filtering out water is improved.

It can be understood that the portable water purifying device using the housing has a small volume, which is more suitable for the use condition of the user, and is more convenient for the user to use, and particularly, the portable water purifying device can be designed to be a single-person portable water purifying device, for example, the volume of the portable water purifying device is 250 ml-1000 ml. Preferably, the portable water purification apparatus has a volume of 250 ml. Preferably, the portable water purification apparatus has a volume of 1000 ml.

Referring to fig. 1 and 2, further, one end of the case 100 is open, and the cover 200 is detachably mounted on the open end of the case 100. In this embodiment, when the portable water purifying apparatus is used, water is added into the inner cavity of the housing 100 through the opening, and then the water sequentially passes through the pre-treatment filter element 310 and the advanced treatment filter element 320 and then flows out from the water outlet of the filter element 300, and then flows into the suction nozzle 210 communicated with the water outlet of the filter element 300, so that a user can drink safe drinking water through the suction nozzle 210.

Further, when the casing 100 is placed upright, that is, when the opening of the casing 100 is directed upward, the length of the second segment 120 in the upright direction is 3cm to 8 cm. The depth of the second section 120 recessed toward the side close to the central axis 101 is 0.5 to 1.5 cm. Preferably, the recessed degree of depth of second section 120 to one side that is close to axis 101 is 1.1cm to make the handheld portion of the arc structure that is formed by second section 120 more accord with adult human palm size, from this when adult's user is outdoor or meet the proruption situation and can't obtain clean drinking water, can directly add the dirty water such as untreated river, lake water, rainwater in the equipment, under the effect of extrusion force, through second grade filtration system, reach the standard of straight drinking water, filter promptly drink promptly, convenient and fast, can easily satisfy outdoor activities such as outing, on foot, donkey friend, ride, the mountain-climbing etc. and the safe drinking water demand when emergent, military use, rescue.

In order to achieve recycling of the housing, in one embodiment, the housing is made of a compressible material. During the use, the user extrudees the casing and makes water get into the preliminary treatment filter core, gets into the advanced treatment filter core by the preliminary treatment filter core again to utilize second grade filtration system to filter dirty water such as untreated river, lake water, rainwater, in order to reach the standard of directly drinking water. Further, the compressible material is preferably an elastic plastic, such as TPE, TPEE, or the like.

As shown in fig. 3, a dust cover 400 is provided outside the suction nozzle 210 of the cover body 200. The dust cover 400 has a receiving cavity 410, and the suction nozzle 210 is received in the receiving cavity 410. It can be understood that the suction nozzle 210 is accommodated in the accommodating cavity 410, such that the dust cap 400 covers the whole suction nozzle 210, and thus the suction nozzle 210 can be isolated from the outside when a user is in outdoor activities, and direct contact between external dust, impurities and the like and the suction nozzle 210 can be cut off, and pollution to the suction nozzle 210 by the external dust, impurities and the like can be avoided.

In this embodiment, when the portable water purifying apparatus is used, after the user puts dirty water into the housing 100, the cover 200 is connected to the housing 100 together with the dust cap 400, and after the dust cap 400 is opened, the housing 100 is squeezed, and safe drinking water can be drunk through the suction nozzle 210, which is safe and sanitary.

Further, to facilitate removal of the dust cap 400, for example, the dust cap 400 is snapped onto the cover 200; for another example, the dust cap 400 is screwed to the cap body 200; for another example, the dust cap 400 is inserted into the cap body 200. Therefore, the dust cover 400 can be taken down from the cover body 200 very conveniently when water needs to be drunk, so that the user can extrude the shell 100 and drink safe drinking water through the suction nozzle 210 without obstacles, the efficiency of taking down the dust cover 400 is improved, and the user experience is also improved.

As shown in fig. 4-1 and 4-2, the housing 100 has an exterior joint 211. The suction nozzle 210 includes a fixing portion 212 and a contact portion 213. Referring to fig. 1, the external connection portion 211 is disposed at an opening of the housing 100. The fixing portion 212 communicates with the cartridge 300. The contact portion 213 is movably connected to the fixing portion 212. Further, the contact portion 213 and the fixing portion 212 form a valve-like structure after being engaged, and the valve-like structure is in a closed state in the state structure shown in fig. 4-1, that is, the water outlet of the filter element 300 is blocked by the contact portion 213 and the fixing portion 212, so that the filtered drinking water cannot flow out; in the open state of the state configuration shown in fig. 4-2, the filtered drinking water can flow through the outlet of the filter element 300 through the contact portion 213 to the outside and be taken by the user.

It can be understood that the water can flow out from the water outlet of the filter cartridge 300 only when the contact portion 213 is pulled out in a direction away from the fixing portion 212 in the suction nozzle 210 of the cover 200, and that external water or air, bacteria, dust, etc. can flow into the filter cartridge 300 from the water outlet of the filter cartridge 300 only when the contact portion 213 is pulled out in a direction away from the fixing portion 212. This further improves the sanitary level, and the suction nozzle 210 is maintained in the closed state shown in fig. 4-1 when no external force is applied, thereby effectively preventing bacteria, dust, etc. from entering the filter cartridge 300, and improving the safety of drinking water.

Referring to fig. 5, the filter element 300 includes a pretreatment filter element 310 and a depth treatment filter element 320 which are communicated with each other. The depth treatment cartridge 320 is disposed between the cover 200 and the pretreatment cartridge 310. That is, when the portable water purifying apparatus is placed upright, i.e., in a normal state, the advanced treatment cartridge 320 is positioned above the pre-treatment cartridge 310. The direction of clean water in use is shown by the arrows in figure 5. This arrangement can reduce the overall volume of the filter element 300 and ensure the filtering effect of the filter element 300 for filtering the dirty water.

In this embodiment, in a primary extrusion process, untreated dirty water such as river water, lake water, rainwater, etc. injected into the housing 100 first passes through the pretreatment filter element 310, and under primary filtration of the pretreatment filter element 310, the abnormal color and odor in the water are removed, and a part of harmful heavy metal ions are absorbed, so as to obtain primary purified water; then, the primary purified water flows into the advanced treatment filter element 320, and impurities such as silt, bacterial colloid, macromolecular organic matters and the like are filtered under the advanced filtration of the advanced treatment filter element 320, so that drinking water with the water quality reaching the standard of direct drinking water is obtained; finally, the drinking water with the quality meeting the drinking water standard reaches the suction nozzle 210 through the cover body 200, and when the user pulls the contact part 213 away from the fixing part 212, the user can drink safe drinking water through the contact part 213 of the suction nozzle 210.

Further, the pretreatment filter element 310 and the advanced treatment filter element 320 are detachably connected. For example, the pretreatment cartridge 310 and the depth treatment cartridge 320 are threaded; as another example, the pretreatment cartridge 310 and the depth treatment cartridge 320 are plug connected; as another example, the pre-treatment cartridge 310 and the depth treatment cartridge 320 are snap-fit connected. This arrangement facilitates replacement of one or both of the pre-treatment cartridge 310 and the depth treatment cartridge 320, while facilitating manufacturing and shipping.

In this embodiment, the pretreatment cartridge 310 and the depth treatment cartridge 320 are connected by a screw. Referring to fig. 6 and 7, a recess 321 is formed on the advanced treatment filter element 320, an internal thread is formed on an inner wall of the recess 321, and an external thread is formed on the protrusion 311 of the pretreatment filter element 310. The external threads of the protrusion 311 are engaged with the internal threads of the recess 321, such that the protrusion 311 of the pretreatment cartridge 310 is threadedly coupled into the recess of the depth treatment cartridge 320, thereby achieving a threaded connection between the pretreatment cartridge 310 and the depth treatment cartridge 320.

Further, referring to fig. 5 and 6, the water inlet 312 of the pretreatment cartridge 310 is located at an end far from the opening of the cover 100. As shown in fig. 6, in this embodiment, the water inlet 312 is located at the bottom of the pretreatment cartridge 310. The arrangement enables the retention time of water in the pretreatment filter element 310 to be long, namely dirty water can be completely primarily filtered in the pretreatment filter element 310, and the primary filtering effect is improved. It is understood that in other embodiments, the water inlet 312 of the pre-treatment cartridge 310 may be located on the sidewall of the pre-treatment cartridge 310, depending on the volume of the pre-treatment cartridge 310.

Further, the pretreatment cartridge 310 is an activated carbon fiber cartridge. The active carbon fiber filter element has the advantages of fine and uniform pore diameter, large adsorption area, high adsorption rate and obvious improvement on water quality and taste; the actual measurement service life is more than 4 times of that of the common active carbon, and the active carbon fiber filter element can remove the abnormal color and odor and absorb partial harmful heavy metal ions.

Further, the advanced treatment cartridge 320 is an ultrafiltration membrane cartridge. It should be pointed out that the ultrafiltration membrane filter element can filter impurities such as silt, bacterial colloid, macromolecular organic matters and the like, so that the quality of the outlet water reaches the direct drinking water standard.

Referring to fig. 7, in one embodiment, the advanced treatment filter element 320 is an explosion-proof wire ultrafiltration membrane filter element, i.e., an explosion-proof wire UF filter element. In this embodiment, the rupture disk ultrafiltration membrane cartridge has a hollow fiber membrane tow. The hollow fiber membrane tow includes a first membrane filament 421 and a second membrane filament 422. The first membrane filaments 421 are hydrophilic membrane filaments, that is, permeable and impermeable membrane filaments, and the second membrane filaments 422 are permeable and impermeable membrane filaments, that is, permeable and impermeable membrane filaments. It can be understood that, because the first membrane thread 421 allows water to pass through but the gas can not pass through, the gas is gathered around the first membrane thread 421, and simultaneously because the second membrane thread 422 allows gas to pass through but the water can not pass through, when the suction nozzle of the cover body is in an open state, the gas entering the hollow fiber membrane filament bundle can be discharged through the second membrane thread 422, so that the phenomenon that the gas is gathered in the hollow fiber membrane filament bundle to generate a water hammer can be avoided, the phenomenon of 'filament explosion' is effectively avoided, the service life of the hollow fiber membrane filament bundle is prolonged, and the filtering effect of the hollow fiber membrane filament bundle is ensured.

In one embodiment, the accuracy of the burst wire UF cartridge is 0.01 micron. It should be noted that conventional UF cartridges have a portion of air or gas dissolved in water entering the UF cartridge, which can accumulate in the membrane filaments to create a transient high pressure ("water hammer") because the gas cannot pass through the conventional UF cartridge. The toughness and tensile strength of the membrane wires in the UF filter element are limited, so that when the gas pressure in the membrane wires exceeds the toughness and tensile strength of the membrane wires, the membrane wires can be broken, so that the filtering capacity of the UF membrane filter element is reduced after the membrane wires are broken, the filtering performance of the filter element is seriously influenced, and the effluent quality does not reach the standard. In addition, when the water purifying device is used, air enters the filter flask, and due to the tension action of water, the air cannot be discharged through the UF membrane to reduce the water yield, and bacteria are easy to breed when the water is contacted with the air, so that the odor is caused, and the taste of the water quality is influenced. The explosion-proof wire UF filter core of this embodiment can solve all kinds of drawbacks of ordinary UF filter core.

In order not to reduce the water flux of the hollow fiber membrane module, further, the number of the second membrane filaments 422 is less than or equal to 5% of the total number of the membrane filaments of the hollow fiber membrane tow. In this embodiment, the percentage of the number of the second membrane filaments to the total number of the hollow fiber membrane tows is set to be not more than 5%.

In one embodiment, after the second membrane filaments 422 are added, the packing density of the hydrophilic membrane filaments, i.e., the first membrane filaments 421, in the hollow fiber membrane filament bundle should be properly increased. Under the premise of the same water flux, the ratio of the packing density of the first membrane filaments to the packing density of the hollow fiber membrane module with all hydrophilic membrane filaments in the hollow fiber membrane module of the embodiment is 1.1-1.3: 1.

The second membrane filaments in this embodiment may be polymer materials such as polyvinylidene fluoride (PVDF), Polyethersulfone (PES), Polysulfone (PS), Polyacrylonitrile (PAN), polyvinyl chloride (PVC), polypropylene (PP), and Polyethylene (PE).

Preferably, as an embodiment, the length of the second membrane thread is equal to the length of the first membrane thread. This arrangement facilitates manufacture and sealing of the entire hollow fiber membrane tow.

Preferably, as an implementation mode, the distance between the second membrane filament and the adjacent first membrane filament is greater than or equal to the distance between two adjacent first membrane filaments. That is, in this embodiment, the gap around the specific membrane filament (second membrane filament) is large, and the gap around the hydrophilic membrane filament (first membrane filament) is relatively small. This arrangement facilitates the discharge of gas from the hollow fiber membrane module.

Preferably, as an implementable manner, the diameter of the second membrane thread is greater than or equal to the diameter of the first membrane thread. This arrangement facilitates rapid venting of the gas. Preferably, the diameter of the second membrane thread is 1.0-1.3 times of the diameter of the hydrophilic membrane thread.

Wherein, the distribution mode of the first membrane silk and the second membrane silk can be various modes. Preferably, as an implementation mode, the second membrane filaments are distributed in the first membrane filaments. The second membrane filaments are distributed in the first membrane filaments in a dispersed manner, so that the rapid discharge of gas in all directions is facilitated.

Preferably, the first membrane filaments are arranged around the second membrane filaments. That is to say, any two second membrane silks are not adjacent to each other, that is, the distance between any two second membrane silks is greater than the distance between the second membrane silk and the first membrane silk nearby. Since the amount of gas initially entering the hollow fiber membrane module is not too large, the second membrane filaments should be distributed as much as possible throughout the hollow fiber membrane module. Thus, the filtering effect and the water flux of the hollow fiber membrane module can be effectively ensured.

Preferably, as an implementation mode, the second membrane filaments are uniformly distributed among the first membrane filaments. This facilitates the discharge of the gas in the intake water.

Preferably, as an alternative, the second membrane filaments are non-uniformly distributed in the first membrane filaments. Preferably, the hollow fiber membrane module further comprises a housing, the first membrane filaments and the second membrane filaments are both mounted in the housing, and the distribution density of the second membrane filaments in the region close to the housing is greater than the distribution density of the second membrane filaments close to the center of the hollow fiber membrane tow. That is, the closer the second membrane filaments are distributed to the housing. The arrangement avoids the influence of the second membrane filaments on the water flux of the hollow fiber membrane module on the one hand, and easily accumulates gas near the shell on the other hand. The housing in this embodiment is made of ABS material. Meanwhile, the end socket of the second membrane wire is hollow. That is to say, two end sockets of the second membrane filaments after the membrane module is formed by casting are kept hollow like the end sockets of the first membrane filaments. The head in this embodiment is an epoxy head. The seal head fills the gaps between the membrane filaments, so that the separation between the stock solution and the permeate liquid is formed, and the stock solution is prevented from directly entering the permeate liquid without being filtered. The hollow fiber membrane module of the invention is of external pressure type.

The pre-treatment cartridge 310 includes a pre-treatment membrane shell and activated carbon fibers disposed in the pre-treatment membrane shell. As shown in fig. 6, the activated carbon fiber in the present invention has a fiber mat structure. The inlet water of the pretreatment filter element 310 in the invention is inlet water at one end and outlet water at the other end.

Preferably, as an implementation manner, the ratio of the lengths of the pretreatment filter element 310 and the advanced treatment filter element 320 is 1: 0.8-2. The arrangement can obtain better water treatment effect.

Preferably, as an implementation mode, the ratio of the outer diameter of the pretreatment filter element 310 to the diameter of the inner cavity of the housing is 1: 1.3-2, and the ratio of the outer diameter of the advanced treatment filter element 320 to the diameter of the inner cavity of the housing is 1: 1.3-2. The water outlet effect can be ensured by the arrangement.

The portable water purifying apparatus of the present invention is provided with a secondary filtering core 300 for performing a secondary treatment of a pre-treatment and an advanced treatment on water, and the water obtained by the portable water purifying apparatus of the present invention is tested to meet the national drinking water standard.

In one use process, firstly, the first step: the second-stage filter element and the cover body are integrally screwed off from the shell, and water is injected into the shell. Then, the first step: the secondary filter element and the cover body are integrally screwed back to the shell, and the shell is slightly squeezed by hands to obtain clean drinking water. And finally, repeating the first step and the second step to realize the recycling of the portable water purifying equipment.

In the process of installing the pretreatment filter element and the advanced treatment filter element on one cover body, firstly, the activated carbon fiber filter element and the explosion-proof wire UF filter element are connected, and the threads are screwed. And then, connecting the connected secondary filter element and the cover body together and screwing. And finally, integrally screwing the connected secondary filter element and the cover body on the shell, and finishing the installation.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A portable water purification apparatus, comprising:

a housing;

the cover body is detachably connected with the shell, and a suction nozzle is arranged on the cover body; the shell comprises a first section, a second section and a third section, wherein the first section protrudes to one side far away from the center of the shell, the second section protrudes to one side close to the center of the shell, and the third section protrudes to one side far away from the center of the shell; the second section is provided with a plurality of mutually connected elastic parts, and each elastic part is provided with an elastic compression ring-shaped structure protruding towards the inside of the shell and used for generating deformation when stressed so as to extrude the shell; and

the filter element is arranged in the inner cavity of the shell, and a water outlet of the filter element is communicated with the suction nozzle;

wherein the filter core includes the preliminary treatment filter core and the advanced treatment filter core of intercommunication each other, the water inlet of filter core is located on the preliminary treatment filter core, the delivery port of filter core is located on the advanced treatment filter core.

2. The portable water purification apparatus of claim 1, wherein the pretreatment cartridge is an activated carbon fiber cartridge and the advanced treatment cartridge is an ultrafiltration membrane cartridge.

3. The portable water purification apparatus of claim 1, wherein the depth treatment cartridge is disposed between the cover and the pre-treatment cartridge.

4. The portable water purification apparatus of claim 1, wherein the pre-treatment cartridge and the depth treatment cartridge are threadably connected.

5. The portable water purification apparatus of claim 4, wherein the advanced treatment cartridge is provided with an internal thread and the pre-treatment cartridge is provided with an external thread on the protrusion.

6. The portable water purification apparatus of claim 1, wherein the inlet of the pretreatment cartridge is located at an end distal from the cover.

7. The portable water purification apparatus of claim 1, wherein the ratio of the lengths of the pretreatment cartridge to the depth treatment cartridge is 1: 0.8-2.

8. The portable water purification apparatus of claim 1, wherein the ratio of the outer diameter of the pretreatment cartridge to the diameter of the inner cavity of the housing is 1: 1.3-2, and the ratio of the outer diameter of the advanced treatment cartridge to the diameter of the inner cavity of the housing is 1: 1.3-2.

9. The portable water purification apparatus of any one of claims 1 to 8, wherein the housing is made of a compressible material.

10. The portable water purifying apparatus according to any one of claims 1 to 8, wherein the suction nozzle is a dust-proof suction nozzle, and a dust-proof cover is further sleeved on the cover body.

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