A portable home water purification device

Abstract

This utility model discloses a portable household water purification device, including a housing. A U-shaped arrangement of water purification pipes is fixedly installed inside the housing, with both ends extending to the outside of the housing. In this utility model, a pre-filtration system is formed by installing a filter cartridge and a stainless steel filter screen at the water inlet end of the water purification pipe. The stainless steel filter screen effectively intercepts large particulate impurities in the water. This design prevents large particulate impurities from directly entering the primary, secondary, and tertiary filter cartridges and the ultrafiltration filter, avoiding clogging of the filter cartridge pores due to sediment and rust in the water. This significantly reduces the filtration load on the filter cartridges and prevents large particulate impurities from scratching the hollow fiber ultrafiltration membrane of the ultrafiltration filter, effectively protecting the filtration performance of the ultrafiltration filter, greatly extending the service life of the entire filtration system, reducing the frequency of filter cartridge replacement and equipment maintenance, and lowering long-term operating costs.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a portable household water purification device. Background Technology

[0002] In the current field of household water purification equipment, the filtration system design of most products has obvious defects, especially the lack of a targeted pre-filtration stage, which leads to many problems in the long-term use of the equipment and makes it difficult to meet users' comprehensive needs for water purification efficiency, component life and use cost.

[0003] Current household water purification equipment typically introduces external water to be filtered directly into the core filtration components, namely primary, secondary, and tertiary filters and ultrafiltration filters, without pre-intercepting large particulate impurities in the water. However, tap water or other water used in daily life often contains large particulate impurities such as sediment, rust, and gravel. When these impurities enter the core filtration components directly with the water flow, they trigger a series of problems: First, large particulate impurities quickly adhere to the surface of the primary filter, clogging the pores in a short time, causing a sharp decrease in filtration accuracy. Simultaneously, increased water flow resistance significantly slows down the water output, severely impacting the user's water experience. Second, some large, harder particulate impurities (such as small rust fragments) may directly scratch the hollow fiber ultrafiltration membrane inside the ultrafiltration filter under the impact of water flow, damaging the membrane's retention structure and impairing the filter's filtration performance, even leading to leaks or purification failure.

[0004] To address this, a portable household water purification device is proposed, which has the advantages of intercepting large particulate impurities in water to reduce the burden on the core filtration components, extend the service life of the filtration system, and reduce the cost of use, thereby solving the problems mentioned in the background technology. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a portable household water purification device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a portable household water purification device, comprising a housing, wherein a U-shaped water purification pipe is fixedly installed inside the housing, and both ends of the water purification pipe extend to the outside of the housing; an ultrafiltration filter is connected to the upper part of the water purification pipe, and a primary filter element, a secondary filter element, and a tertiary filter element are installed sequentially from right to left on the lower part of the water purification pipe; a filter cylinder is connected to the water inlet end of the water purification pipe, and a stainless steel filter screen is detachably installed on the inner wall of the filter cylinder; a threaded nozzle is provided at the bottom of the filter cylinder, and an impurity collection shell is threadedly installed on the threaded nozzle; a threaded sleeve is integrally formed at the port of the impurity collection shell corresponding to the threaded nozzle, and a rubber sealing ring is provided on the inner side of the threaded sleeve that abuts against the end face of the threaded nozzle.

[0007] As a further description of the above technical solution: two vertical guide rails are symmetrically installed at the opening on the front surface of the housing, and a housing cover is provided between the two vertical guide rails that abuts against the opening of the housing. Guide strips that are slidably connected to the vertical guide rails are welded on the left and right sides of the housing cover, and a tempered glass viewing window is embedded in the lower surface of the housing cover corresponding to the installation position of the filter cartridge. A support block that abuts against the bottom of the housing cover is provided at the bottom of the vertical guide rails.

[0008] As a further description of the above technical solution: the primary filter element is specifically a PP cotton filter element, and the secondary and tertiary filter elements are specifically granular activated carbon filter elements.

[0009] As a further description of the above technical solution: a partition is welded inside the housing, and the surface of the ultrafiltration filter element is connected to the partition by a support and bolts.

[0010] As a further description of the above technical solution: a maintenance cover is installed on the outer surface of the filter cartridge by screws, and a sealing ring is installed at the connection between the maintenance cover and the filter cartridge.

[0011] As a further description of the above technical solution: universal wheels are installed at the four corners of the bottom of the housing, and a rectangular frame-shaped handrail is welded to the left side wall of the housing.

[0012] As a further description of the above technical solution: both ends of the filter cylinder are connected to the water inlet pipe, the stainless steel filter screen is set on the left side inside the filter cylinder, and the stainless steel filter screen covers the connection between the filter cylinder and the water inlet pipe.

[0013] This utility model has the following beneficial effects: In this invention, a pre-filtration system is constructed by installing a filter cartridge and a stainless steel filter screen at the water inlet of the water purification pipe. The stainless steel filter screen can efficiently intercept large particulate impurities in the water. This design prevents large particulate impurities from directly entering the primary, secondary, and tertiary filter cartridges and the ultrafiltration filter, avoiding clogging of the filter cartridge pores caused by sediment and rust in the water. This greatly reduces the filtration load on the filter cartridges and prevents large particulate impurities from scratching the hollow fiber ultrafiltration membrane of the ultrafiltration filter, effectively protecting the filtration performance of the ultrafiltration filter and significantly extending the service life of the entire filtration system. This reduces the frequency of filter cartridge replacement and equipment maintenance, lowering long-term operating costs. Furthermore, the impurity collection shell at the bottom of the filter cartridge is connected to a threaded nozzle via a threaded sleeve and is equipped with a rubber sealing ring. Users can simply unscrew the impurity collection shell to empty the trapped impurities without disassembling complex components. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of a portable household water purification device according to the present invention. Figure 2 This is a schematic diagram of the internal structure of a portable household water purification device according to the present invention. Figure 3 A schematic diagram of the filter cartridge and impurity collection shell; Figure 4 This is a 3D view of the vertical guide rails and the shell cover.

[0015] Legend: 1. Housing; 2. Vertical guide rail; 3. Housing cover; 4. Casters; 5. Water purification pipe; 6. Viewing window; 7. Ultrafiltration filter; 8. Primary filter element; 9. Secondary filter element; 10. Tertiary filter element; 11. Filter cartridge; 12. Impurity collection housing; 13. Threaded nozzle; 14. Threaded sleeve; 15. Rubber sealing ring; 16. Stainless steel filter screen; 17. Guide strip; 18. Support block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] According to an embodiment of the present invention, a portable household water purification device is provided.

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a portable household water purification device according to an embodiment of the present invention includes a housing 1. A U-shaped water purification pipe 5 is fixedly installed inside the housing 1, with both ends of the water purification pipe 5 extending to the outside of the housing 1. An ultrafiltration filter 7 is connected to the upper part of the water purification pipe 5, and a primary filter element 8, a secondary filter element 9, and a tertiary filter element 10 are sequentially installed on the lower part of the water purification pipe 5 from right to left. A filter cylinder 11 is connected to the water inlet end of the water purification pipe 5, and a stainless steel filter screen 16 is detachably installed on the inner wall of the filter cylinder 11. The bottom of the filter cylinder 11... The housing 1 is equipped with a threaded nozzle 13, on which a debris collection shell 12 is threadedly mounted. A threaded sleeve 14 is integrally formed at the port of the debris collection shell 12 corresponding to the threaded nozzle 13. A rubber sealing ring 15, abutting against the end face of the threaded nozzle 13, is provided on the inner side of the threaded sleeve 14. Inside the housing 1, a U-shaped water purification pipe 5 is bolted in place. The water purification pipe 5 is made of food-grade 304 stainless steel, with a smooth inner wall that is not prone to bacterial growth. Both ends of the water purification pipe 5 extend to the outside of the housing 1 for easy connection to external water pipes. The upper part of the water purification pipe 5 is connected to an ultrafiltration filter 7 via a T-joint. The ultrafiltration filter 7 contains a hollow fiber ultrafiltration membrane, which effectively traps suspended solids, colloids, bacteria, and other impurities in the water. The lower part of the water purification pipe 5, from right to left, is equipped with a primary filter element 8, a secondary filter element 9, and a tertiary filter element 10, arranged horizontally side-by-side with uniform spacing for easy disassembly and replacement. The inlet of the water purification pipe 5 is connected to a filter cylinder 11 via a flange. The filter cylinder 11 is cylindrical and made of transparent PC material, allowing for direct observation of the internal filtration process. A stainless steel filter screen 16 is detachably installed on the inner wall of the filter cylinder 11 via clips. The stainless steel filter screen 16 has an 80-mesh pore size and can initially filter large particles of impurities in the water, such as silt and rust. The bottom of the filter cylinder 11 has an integrally formed threaded nozzle 13. The outer surface of the threaded nozzle 13 has external threads, and an impurity collection shell 12 is threaded onto the threaded nozzle 13. The impurity collection shell 12 is hemispherical and made of PP material, which can collect impurities that fall from the stainless steel filter screen 16. The port of the impurity collection shell 12 is integrally formed with a threaded sleeve 14 corresponding to the threaded nozzle 13. The inner surface of the threaded sleeve 14 is provided with an internal thread that matches the external thread of the threaded nozzle 13. A rubber sealing ring 15 that abuts against the end face of the threaded nozzle 13 is attached to the inner side of the threaded sleeve 14. The rubber sealing ring 15 is made of nitrile rubber and has good sealing performance, which can effectively prevent water in the filter cartridge 11 from leaking from the threaded connection. Please refer to Figure 1 and Figure 4Two vertical guide rails 2 are symmetrically installed at the opening on the front surface of the housing 1, and a cover 3 is positioned between the two vertical guide rails 2, abutting against the opening of the housing 1. Guide strips 17, which are slidably connected to the vertical guide rails 2, are welded to the left and right sides of the cover 3. A tempered glass viewing window 6 is embedded in the lower surface of the cover 3 corresponding to the installation position of the filter cartridge 11. A support block 18, which abuts against the bottom of the cover 3, is provided at the bottom of the vertical guide rails 2. The vertical guide rails 2 have a U-shaped groove structure, are made of aluminum alloy, and have undergone anodizing treatment, providing excellent rust resistance. The cover 3, which abuts against the opening of the housing 1, is made of the same ABS plastic material as the housing 1, with a frosted surface that is smooth to the touch and resistant to scratches. Guide strips 17, which are slidably connected to the vertical guide rails 2, are laser-welded to the left and right sides of the cover 3. The guide strips 17 are elongated structures, and their width matches the groove width of the vertical guide rails 2, ensuring that the cover 3 can slide smoothly up and down along the vertical guide rails 2. A tempered glass viewing window 6 is embedded in the lower surface of the cover 3, corresponding to the installation position of the filter cartridge 11. The size of the viewing window 6 matches the cross-sectional size of the filter cartridge 11, with a thickness of 5mm and high light transmittance. Users can clearly observe the filtration status and impurity collection of the stainless steel filter screen 16 inside the filter cartridge 11 through the viewing window 6. A support block 18 is bolted to the bottom of the vertical guide rail 2, abutting against the bottom of the cover 3. The support block 18 is a cuboid structure made of rubber, which not only supports the cover 3 and prevents it from slipping, but also acts as a buffer when the cover 3 is closed, avoiding noise caused by the collision between the cover 3 and the housing 1.

[0019] Please refer to Figure 2 The primary filter element 8 is a PP cotton filter element, while the secondary filter element 9 and the tertiary filter element 10 are granular activated carbon filter elements. The primary filter element 8 is a PP cotton filter element, which is made of high-density polypropylene fiber through hot-melt winding. It features uniform pore size and high filtration efficiency, effectively filtering large particulate impurities such as mud, rust, and colloids in water. The filtration accuracy can reach 5 microns. As the primary filtration stage of the water purification equipment, it can effectively protect subsequent filter elements and extend their service life. The secondary filter cartridge 9 and the tertiary filter cartridge 10 are granular activated carbon filter cartridges. These cartridges are made from high-quality coconut shell activated carbon through a special process. They have a well-developed internal pore structure, a large specific surface area, and strong adsorption capacity. They can effectively adsorb residual chlorine, odors, discoloration, and some organic matter in the water, such as chloroform and carbon tetrachloride. The secondary filter cartridge 9 is mainly used for the initial adsorption of residual chlorine and odors in the water, while the tertiary filter cartridge 10 further deeply adsorbs residual organic matter and odors in the water. After filtration by the tertiary filter cartridge 10, the taste of the water can be significantly improved.

[0020] Please refer to Figure 2The housing 1 has a partition welded inside. The surface of the housing 1 of the ultrafiltration filter element is connected to the partition via supports and bolts. Inside the housing 1, a horizontally positioned partition made of stainless steel with a thickness of 3mm is laser-welded in, providing excellent load-bearing capacity. This partition divides the internal space of the housing 1 into upper and lower layers. The upper layer is used to install the ultrafiltration filter 7, and the lower layer is used to install the primary filter element 8, secondary filter element 9, and tertiary filter element 10, resulting in a more rational internal structure and higher space utilization. The surface of the housing 1 of the ultrafiltration filter element is connected to the partition via supports and bolts. The supports are L-shaped, made of stainless steel, and are welded to the outside of the housing 1 of the ultrafiltration filter element. Bolt holes are provided on the supports, through which bolts securely connect the supports to the partition, ensuring a strong and reliable connection and effectively preventing the ultrafiltration filter element from shaking during equipment movement.

[0021] Please refer to Figure 2 A maintenance cover is mounted on the outer surface of the filter cartridge 11 using screws. A sealing ring is installed at the connection between the maintenance cover and the filter cartridge 11. The maintenance cover is circular and made of the same transparent PC material as the filter cartridge 11. The diameter of the maintenance cover matches the outer diameter of the filter cartridge 11. The maintenance cover is fixed to the end of the filter cartridge 11 using four evenly distributed screws, facilitating later opening of the maintenance cover for cleaning or replacement of the stainless steel filter screen 16 inside the filter cartridge 11. A sealing ring is installed at the connection between the maintenance cover and the filter cartridge 11. The sealing ring is annular and made of silicone, possessing good elasticity and sealing properties, effectively preventing water leakage from the filter cartridge 11 at the connection between the maintenance cover and the filter cartridge 11, ensuring the sealing and stability of the filtration process.

[0022] Please refer to Figure 1 and Figure 2 Each of the four corners of the bottom of the housing 1 is equipped with casters 4, and a rectangular frame-shaped handle is welded to the left side wall of the housing 1. The casters 4 are made of high-strength polyurethane material with a wheel diameter of 50mm, possessing good wear resistance and load-bearing capacity. Each caster 4 is equipped with a brake device, allowing users to lock the casters 4 by pressing the brake pedal to prevent the equipment from moving on its own during use, facilitating the secure placement of the equipment. The rectangular frame-shaped handle, made of stainless steel with a polished surface, is also welded to the left side wall of the housing 1, providing a smooth feel and allowing users to easily grip the handle and move the equipment, conveniently adapting the water purifier to different locations as needed.

[0023] Please refer to Figure 3Both ends of the filter cylinder 11 are connected to the water inlet pipe. A stainless steel filter screen 16 is located on the left side inside the filter cylinder 11, covering the connection between the filter cylinder 11 and the water inlet pipe. Both ends of the filter cylinder 11 are connected to the water inlet pipe via threaded connectors. The water inlet pipe is made of food-grade PVC material, which has good flexibility and corrosion resistance, facilitating pipe layout and connection. The stainless steel filter screen 16 is located on the left side inside the filter cylinder 11 and is fixed to the inner wall of the filter cylinder 11 by clips. Its edge fits tightly against the inner wall of the filter cylinder 11. The stainless steel filter screen 16 covers the connection between the filter cylinder 11 and the water inlet pipe, ensuring that all water entering the filter cylinder 11 is filtered by the stainless steel filter screen 16, effectively intercepting large particulate impurities in the water and preventing them from entering the subsequent water purification pipe 5 and filter element, thereby protecting the subsequent filtration components and extending the service life of the entire water purification equipment.

[0024] Working principle: During operation, the water to be filtered first flows into the filter cylinder 11 through the inlet pipe. Since the stainless steel filter screen 16 is located on the left side inside the filter cylinder 11 and completely covers the connection between the filter cylinder 11 and the inlet pipe, the water will first pass through the 80-mesh stainless steel filter screen 16 for pre-filtration. Large particles of impurities in the water are intercepted by the stainless steel filter screen 16, and the intercepted impurities naturally fall into the impurity collection shell 12 at the bottom of the filter cylinder 11 under gravity for storage. After pre-filtration, the water flows out of the filter cylinder 11 and enters the U-shaped water purification pipe 5. The water first flows along the lower part of the water purification pipe 5, passing sequentially through the primary filter cartridge 8, the secondary filter cartridge 9, and the tertiary filter cartridge 10: the primary filter cartridge 8 further filters out residual fine particulate impurities in the water, with a filtration accuracy of up to 5 microns; the secondary filter cartridge 9 adsorbs residual chlorine, odors, and some discolored substances in the water; the tertiary filter cartridge 10 deeply adsorbs residual organic matter (such as chloroform and carbon tetrachloride) and trace amounts of odors in the water, completing deep purification. Then, the water filtered by the tertiary filter cartridge 10 flows upward along the water purification pipe 5 and enters the connected ultrafiltration filter 7. The hollow fiber ultrafiltration membrane inside the ultrafiltration filter 7 traps suspended solids, colloids, bacteria, and other tiny impurities in the water, ultimately... Water that meets the purification standards flows out from the water outlet on the outside of the housing 1 through the water purification pipe 5 for user use. During the use of the equipment, the user can observe the impurity adhesion of the stainless steel filter screen 16 inside the filter cylinder 11 through the tempered glass viewing window 6 on the housing cover 3. When a lot of impurities accumulate, the impurity collection shell 12 can be unscrewed to empty the impurities, or the maintenance cover on the outer surface of the filter cylinder 11 can be opened to remove the stainless steel filter screen 16 for cleaning or replacement. If the equipment needs to be moved, hold the rectangular frame handle on the left side wall of the housing 1 and push the equipment to move it flexibly through the universal wheels 4 at the four corners of the bottom. After moving to the target position, the equipment can be fixed by using the braking device of the universal wheels 4.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable household water purification device, comprising a housing (1), characterized in that: The housing (1) is fixedly installed with a U-shaped water purification pipe (5), and both ends of the water purification pipe (5) extend to the outside of the housing (1). The upper part of the water purification pipe (5) is connected to an ultrafiltration filter (7), and the lower part of the water purification pipe (5) is installed with a first-stage filter element (8), a second-stage filter element (9) and a third-stage filter element (10) from right to left. The water inlet end of the water purification pipe (5) is connected to a filter cylinder (11), and a stainless steel filter screen (16) is detachably installed on the inner wall of the filter cylinder (11). The bottom of the filter cylinder (11) is provided with a threaded nozzle (13), and an impurity collection shell (12) is threaded on the threaded nozzle (13). The port of the impurity collection shell (12) is provided with a threaded sleeve (14) integrally formed with the threaded nozzle (13), and a rubber sealing ring (15) is provided on the inner side of the threaded sleeve (14) that abuts against the end face of the threaded nozzle (13).

2. The portable household water purification device according to claim 1, characterized in that: Two vertical guide rails (2) are symmetrically installed at the opening on the front surface of the housing (1), and a cover (3) that abuts against the opening of the housing (1) is provided between the two vertical guide rails (2). Guide strips (17) that slide and connect with the vertical guide rails (2) are welded on the left and right sides of the cover (3), and a tempered glass viewing window (6) is embedded in the lower surface of the cover (3) corresponding to the installation position of the filter cylinder (11). A support block (18) that abuts against the bottom of the cover (3) is provided at the bottom of the vertical guide rails (2).

3. The portable household water purification device according to claim 1, characterized in that: The primary filter element (8) is specifically a PP cotton filter element, and the secondary filter element (9) and the tertiary filter element (10) are specifically granular activated carbon filter elements.

4. A portable household water purification device according to claim 1, characterized in that: include: Ultrafiltration filter element; a partition is welded inside the housing (1), and the surface of the housing (1) of the ultrafiltration filter element is connected to the partition by a support and bolts.

5. A portable household water purification device according to claim 1, characterized in that: The outer surface of the filter cartridge (11) is fitted with a maintenance cover by screws, and a sealing ring is installed at the connection between the maintenance cover and the filter cartridge.

6. A portable household water purification device according to claim 1, characterized in that: The four corners of the bottom of the housing (1) are equipped with casters (4), and the left side wall of the housing (1) is welded with a rectangular frame-shaped handrail.

7. A portable household water purification device according to claim 1, characterized in that: Both ends of the filter cylinder (11) are connected to the water inlet pipe. The stainless steel filter screen (16) is located on the left side inside the filter cylinder (11) and covers the connection between the filter cylinder (11) and the water inlet pipe.

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