A composite filter cartridge device with scale inhibition function

Abstract

This utility model discloses a composite filter element device with scale inhibition function, including a top pressure cap assembly, a cylinder, and a filter element handle seat. A post-filter element assembly with its top side communicating with the inside of the top pressure cap assembly is installed on the top of the cylinder; a reverse osmosis membrane filter element assembly with its top side abutting against and communicating with the lower side of the post-filter element assembly is installed in the middle of the cylinder; and a scale inhibition filter element assembly with its top side abutting against and communicating with the lower side of the reverse osmosis membrane filter element assembly and its bottom side sealed by the filter element handle seat is installed at the bottom of the cylinder. The multiple filter elements are arranged in series, which can reduce the volume occupied by the filter elements, facilitate the assembly of composite filter elements, effectively improve assembly efficiency and reduce the volume of filter elements, and also effectively prevent scale formation.

Description

[Technical Field]

[0001] This utility model belongs to the field of water purification equipment technology, specifically relating to a composite filter cartridge device with scale inhibition function. [Background Technology]

[0002] Water purifier cartridges are key components for purifying water sources, used to filter impurities and harmful substances in water, so that the water reaches a certain level of cleanliness.

[0003] Traditional reverse osmosis water purifiers on the market today all have multiple filter stages, resulting in a very large overall size and significant space wastage. Furthermore, because the lifespans of the multiple filter stages vary, service personnel need to make frequent visits to replace them, leading to high product maintenance costs.

[0004] Therefore, in order to reduce the size, the reverse osmosis membrane filter element and the post-filter element are usually integrated into a filter housing to form a composite filter element. However, both the reverse osmosis membrane filter element and the post-filter element have multiple components. If each component of the reverse osmosis membrane filter element and the post-filter element is installed into the filter housing in sequence, it will take a long time, which will make the assembly efficiency of the composite filter element relatively low.

[0005] In addition, some areas have high water hardness, with high levels of calcium and magnesium ions. Long-term consumption of high-hardness water can cause chronic poisoning and seriously endanger people's health. Water purifier filters can effectively reduce the calcium and magnesium ion content in high-hardness water; however, because high-hardness water contains a large amount of calcium and magnesium ions, reverse osmosis membrane filters and post-filters are prone to clogging, resulting in a short lifespan. [Utility Model Content]

[0006] This utility model provides a composite filter element device with scale inhibition function. Multiple filter elements are arranged in series, which can reduce the volume occupied by the filter elements. The structure is simple, which not only facilitates the assembly of composite filter elements, improves assembly efficiency and reduces the size of filter elements, but also effectively prevents scale formation.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A composite filter element device with scale inhibition function includes a top cover assembly, a cylindrical body and a filter element handle seat, wherein the top cover assembly and the filter element handle seat are respectively sealed to the upper and lower ends of the cylindrical body.

[0009] The top cover assembly is provided with a tap water inflow channel, a pure water outflow channel and a wastewater outflow channel that are connected to the outside.

[0010] The top of the cylinder is fitted with a post-filter assembly whose top side communicates with the interior of the top cover assembly;

[0011] The middle part of the cylinder is fitted with a reverse osmosis membrane filter element assembly whose top side abuts against and is connected to the lower side of the post-filter element assembly;

[0012] The bottom of the cylinder is fitted with a scale-inhibiting filter element assembly whose top side abuts against and communicates with the lower side of the reverse osmosis membrane filter element assembly, and whose bottom side is sealed by the filter element handle seat cover;

[0013] The post-filter assembly, the reverse osmosis membrane filter assembly, and the scale inhibitor filter assembly are connected in series along the axial direction to form an annular raw water channel between them and the inner wall of the cylinder for external tap water to enter. External tap water enters the scale inhibitor filter assembly from the bottom through the raw water channel, is filtered, and then flows directly out from the top side and enters the reverse osmosis membrane filter assembly from the bottom. The pure water formed after being filtered by the reverse osmosis membrane filter assembly enters the post-filter assembly directly from the bottom side through the central channel, and then flows out from the outlet on the top pressure cap assembly after being filtered by the post-filter assembly.

[0014] Preferably, the scale inhibitor filter element assembly includes a U-shaped stepped scale inhibitor lower end cover and a scale inhibitor upper end cover. The scale inhibitor upper end cover is fastened and fixed to the stepped surface of the scale inhibitor lower end cover and forms a receiving cavity with the lower space to accommodate the scale inhibitor entering the tap water for the first scale removal filtration.

[0015] Preferably, the annular portion on the upper side of the scale inhibitor lower end cap supports and fits around the bottom periphery of the reverse osmosis filter element on the reverse osmosis membrane filter element assembly, and the scale inhibitor upper end cap has multiple vertically connected outlet channels arranged in an axial array to allow tap water after scale removal and filtration by the scale inhibitor to directly enter from the bottom of the reverse osmosis membrane filter element assembly.

[0016] Preferably, the reverse osmosis membrane filter element assembly includes a cylindrical reverse osmosis membrane filter element and an inner sleeve. The lower side of the inner sleeve is fitted onto the top end of the reverse osmosis membrane filter element, and the top end of the inner sleeve is connected to the top end of the cylinder body to the top pressure cap assembly. A raw water channel is formed between the outer wall of the inner sleeve and the cylinder body, which communicates with the tap water inflow channel on the top pressure cap assembly and is used for the entry of external tap water. A central channel with a partition plate at the bottom is formed along the central axis of the reverse osmosis membrane filter element, and a post-inlet connector for pure water introduction is inserted into the central channel at the top end of the reverse osmosis membrane filter element and is located at the center of the lower side of the post-filter element assembly.

[0017] Preferably, the post-filter assembly includes a rear upper end cover, a post-filter element, and a rear lower end cover. The rear upper end cover and the rear lower end cover are fitted together to form an inner cavity that seals and encloses the post-filter element. The upper part of the inner sleeve of the reverse osmosis membrane filter assembly seals and encloses the joined rear upper end cover and rear lower end cover, forming a wastewater flow channel that facilitates wastewater discharge.

[0018] Preferably, the top pressure cover assembly includes a top side pressure cover, an ultrasonic pressure cover, and a locking cover. The locking cover is rotatably locked and installed on the outer wall of the top of the cylinder. The top side pressure cover is respectively provided with a tap water inflow channel, a pure water outflow channel, and a wastewater outflow channel. The ultrasonic pressure cover is fitted into the inner cavity of the locking cover and is sealed by the top side pressure cover.

[0019] Preferably, the top of the cylinder is also equipped with three sets of channel stop covers and self-locking springs that are connected to the tap water inflow channel, pure water outflow channel and wastewater outflow channel corresponding to the top side cover, and control the self-locking closure of their respective channels.

[0020] Preferably, the top side pressure cover and the outer circumferential edge of the locking cover are locked together by a plurality of screws.

[0021] The beneficial effects of this utility model are:

[0022] The top cover assembly has three sets of tap water inflow channels, pure water outflow channels, and wastewater outflow channels. After the post-filter assembly, reverse osmosis membrane filter assembly, and scale inhibitor filter assembly are connected, they form an annular raw water channel between the filter assembly and the inner wall of the cylinder for external tap water to enter. External tap water enters from the bottom of the scale inhibitor filter assembly through the raw water channel, is filtered, and then flows directly out from the top surface. It also enters from the bottom of the reverse osmosis membrane filter assembly. After being filtered by the reverse osmosis membrane filter assembly, the pure water flows out from the central channel of the reverse osmosis membrane filter and then directly enters the post-filter assembly from the bottom side. After being filtered by the post-filter assembly, it flows out from the pure water outflow channel on the top cover assembly. Wastewater is discharged directly through the wastewater outflow channel.

[0023] The entire filter element device adopts a series connection of three filter element components connected vertically, which is simple in structure, facilitates the assembly of composite filter elements, and effectively improves assembly efficiency and reduces filter element volume. [Attached Image Description]

[0024] Figure 1 This is an exploded structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional cross-sectional structural schematic diagram of this utility model;

[0026] Figure 3 This is a front view cross-sectional structural diagram of the present invention;

[0027] Figure 4 This is a bottom-view three-dimensional structural diagram of the present invention;

[0028] Figure 5 This is a side view of the three-dimensional structure of this utility model;

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

Detailed Implementation Methods

[0030] A composite filter element device with scale inhibition function is used in water purifiers, such as... Figures 1 to 5 As shown, the device includes a top pressure cap assembly 1, a cylindrical body 2, and a filter element handle seat 3. The top pressure cap assembly 1 and the filter element handle seat 3 are respectively sealed to the upper and lower ends of the cylindrical body 2. The top pressure cap assembly 1 is provided with a tap water inflow channel, a pure water outflow channel, and a wastewater outflow channel that communicate with the outside. A post-filter element assembly 4, whose top side communicates with the inside of the top pressure cap assembly 1, is installed on the top of the cylindrical body 2. A reverse osmosis membrane filter element assembly 5, whose top side abuts against and communicates with the lower side of the post-filter element assembly 4, is installed in the middle of the cylindrical body 2. A reverse osmosis membrane filter element assembly 5, whose top side abuts against and communicates with the lower side of the reverse osmosis membrane filter element assembly 5, and whose bottom side is sealed by the filter element handle seat 3, is installed at the bottom of the cylindrical body 2. The scale inhibitor filter element assembly 6 is sealed; wherein, the post-filter element assembly 4, the reverse osmosis membrane filter element assembly 5 and the scale inhibitor filter element assembly 6 are connected in series along the axial direction to form an annular raw water channel between them and the inner wall of the cylinder 2 for the entry of external tap water. External tap water enters from the bottom of the scale inhibitor filter element assembly 6 through the raw water channel, flows out directly from the top side, and enters from the bottom of the reverse osmosis membrane filter element assembly 5. The pure water formed after being filtered by the reverse osmosis membrane filter element assembly 5 enters the post-filter element assembly 4 directly from the bottom side through the central channel in the middle. After being filtered by the post-filter element assembly 4, it flows out from the outlet on the top pressure cover assembly 1.

[0031] like Figures 1 to 3 As shown, the top pressure cover assembly 1 includes a top side pressure cover 1a, an ultrasonic pressure cover 1b, and a locking cover 1c. The locking cover 1c is rotatably locked and installed on the outer wall of the top of the cylinder 2. The top side pressure cover 1a is respectively provided with a tap water inflow channel, a pure water outflow channel, and a wastewater outflow channel. The ultrasonic pressure cover 1b is fitted into the inner cavity of the locking cover 1c and sealed by the top side pressure cover 1a. The top side pressure cover 1a and the outer circumferential edge of the locking cover 1c are locked together by multiple screws (not shown in the figure). At the top of the cylinder 2, three sets of channel stop covers 7 and self-locking tension springs are also installed, which are respectively connected to the tap water inflow channel, pure water outflow channel, and wastewater outflow channel corresponding to the top side pressure cover and control the self-locking closure of their respective channels.

[0032] Continue as Figures 1 to 3 As shown, the scale inhibitor filter element assembly 6 includes a U-shaped stepped scale inhibitor lower end cover 60 and a scale inhibitor upper end cover 61. The scale inhibitor upper end cover 61 is fastened and fixed to the stepped surface of the scale inhibitor lower end cover 60 and forms a cavity with the lower space to accommodate the scale inhibitor for the first descaling filtration of the tap water. The upper annular part of the scale inhibitor lower end cover 60 is fitted around the bottom periphery of the reverse osmosis filter element on the reverse osmosis membrane filter element assembly 5. The scale inhibitor upper end cover 61 has multiple vertically connected outlet channels that allow the tap water after scale removal and filtration by the scale inhibitor to enter directly from the bottom of the reverse osmosis membrane filter element assembly 5.

[0033] Continue as Figures 1 to 3 As shown, the reverse osmosis membrane filter element assembly 5 includes a cylindrical reverse osmosis membrane filter element 50 and an inner sleeve 51. The lower side of the inner sleeve 51 is fitted onto the top part of the reverse osmosis membrane filter element 50, and the top part of the inner sleeve 51 is connected to the top pressure cap assembly 1 connected to the top part of the cylinder body 2. A raw water channel 9 is formed between the outer wall of the inner sleeve 51 and the cylinder body 2, which is connected to the tap water inflow channel on the top pressure cap assembly 1 and is used for the entry of external tap water. A central channel 10 with a partition plate at the bottom is formed in the central axis of the reverse osmosis membrane filter element 50.

[0034] Continue as Figures 1 to 3 As shown, the post-filter assembly 4 includes a rear upper end cover 40, a post-filter element 41, and a rear lower end cover 42. The rear upper end cover 40 and the rear lower end cover 42 are fitted together to form an inner cavity that seals and encloses the post-filter element 41. A post-inlet connector 11 extends from the center of the lower bottom of the rear lower end cover 42 and is inserted into the center channel at the top of the reverse osmosis membrane filter element 50 for the introduction of pure water. The upper part of the inner sleeve 51 on the reverse osmosis membrane filter assembly 5 seals and encloses the fitted rear upper end cover 40 and the rear lower end cover 42, forming a wastewater flow channel that facilitates wastewater discharge.

[0035] During use, external tap water enters the scale inhibitor filter element assembly 6 from the bottom through the raw water channel, flows out directly from the top surface, and enters the reverse osmosis membrane filter element assembly 5 from the bottom. After being filtered by the reverse osmosis membrane filter element assembly 5, the pure water flows out from the central channel of the reverse osmosis membrane filter element 50. Then, it directly enters the post-filter element assembly 4 from the bottom side. After being filtered by the post-filter element 41, it flows out from the pure water outlet channel on the top pressure cover assembly 1. Wastewater is discharged directly through the wastewater outlet channel.

[0036] The above-described embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Any obvious changes made to the shape, structure and principle of this utility model, as well as any other modifications that do not depart from the essence of this utility model, should be covered within the protection scope of this utility model.

Claims

1. A composite filter element device with scale inhibition function, characterized in that It includes a top pressure cap assembly, a cylinder body, and a filter element handle seat, wherein the top pressure cap assembly and the filter element handle seat are respectively fastened and sealed to the upper and lower ends of the cylinder body; The top cover assembly is provided with a tap water inflow channel, a pure water outflow channel and a wastewater outflow channel that are connected to the outside. The top of the cylinder is fitted with a post-filter assembly whose top side communicates with the interior of the top cover assembly; The middle part of the cylinder is fitted with a reverse osmosis membrane filter element assembly whose top side abuts against and is connected to the lower side of the post-filter element assembly; The bottom of the cylinder is fitted with a scale-inhibiting filter element assembly whose top side abuts against and communicates with the lower side of the reverse osmosis membrane filter element assembly, and whose bottom side is sealed by the filter element handle seat cover; The post-filter assembly, the reverse osmosis membrane filter assembly, and the scale inhibitor filter assembly are connected in series along the axial direction to form an annular raw water channel between them and the inner wall of the cylinder for external tap water to enter. External tap water enters the scale inhibitor filter assembly from the bottom through the raw water channel, is filtered, and then flows directly out from the top side and enters the reverse osmosis membrane filter assembly from the bottom. The pure water formed after being filtered by the reverse osmosis membrane filter assembly enters the post-filter assembly directly from the bottom side through the central channel, and then flows out from the outlet on the top pressure cap assembly after being filtered by the post-filter assembly.

2. The composite filter element device with scale inhibition function according to claim 1, characterized in that, The scale-inhibiting filter element assembly includes a U-shaped stepped scale-inhibiting lower end cover and a scale-inhibiting upper end cover. The scale-inhibiting upper end cover is fastened and fixed to the stepped surface of the scale-inhibiting lower end cover, and together with the lower space, forms a receiving cavity for accommodating the scale inhibitor entering the tap water for the first scale removal filtration.

3. A composite filter element device with scale inhibition function according to claim 2, characterized in that, The annular portion on the upper side of the scale inhibitor lower end cap supports and fits around the bottom periphery of the reverse osmosis filter element on the reverse osmosis membrane filter element assembly. The scale inhibitor upper end cap has multiple outlet channels arranged in an axial array, allowing tap water after scale removal and filtration by the scale inhibitor to directly enter from the bottom of the reverse osmosis membrane filter element assembly.

4. The composite filter element device with scale inhibition function according to claim 1, characterized in that, The reverse osmosis membrane filter assembly includes a cylindrical reverse osmosis membrane filter element and an inner sleeve. The lower side of the inner sleeve is fitted onto the top end of the reverse osmosis membrane filter element, and the top end of the inner sleeve is connected to the top end of the cylinder body to the top pressure cap assembly. A raw water channel is formed between the outer wall of the inner sleeve and the cylinder body, which communicates with the tap water inflow channel on the top pressure cap assembly and is used for the entry of external tap water. A central channel with a partition plate at the bottom is formed along the central axis of the reverse osmosis membrane filter element. A post-filter assembly has a post-inlet connector that is inserted into the central channel at the top end of the reverse osmosis membrane filter element and is used for the introduction of pure water.

5. A composite filter element device with scale inhibition function according to claim 1, characterized in that, The post-filter assembly includes a rear upper end cover, a post-filter element, and a rear lower end cover. The rear upper end cover and the rear lower end cover are fitted together to form an inner cavity that seals and encloses the post-filter element. The upper part of the inner sleeve of the reverse osmosis membrane filter assembly seals and encloses the fitted rear upper end cover and the rear lower end cover, forming a wastewater flow channel that facilitates wastewater discharge.

6. A composite filter element device with scale inhibition function according to claim 1, characterized in that, The top cover assembly includes a top side cover, an ultrasonic cover, and a locking cover. The locking cover is rotatably locked and installed on the outer wall of the top of the cylinder. The top side cover is respectively provided with a tap water inflow channel, a pure water outflow channel, and a wastewater outflow channel. The ultrasonic cover is fitted into the inner cavity of the locking cover and is sealed by the top side cover.

7. A composite filter element device with scale inhibition function according to claim 6, characterized in that, The top of the cylinder is also equipped with three sets of channel stop covers and self-locking springs that are connected to the tap water inflow channel, pure water outflow channel and wastewater outflow channel corresponding to the top side cover, and control the self-locking closure of their respective channels.

8. A composite filter element device with scale inhibition function according to claim 6, characterized in that, The top side cover and the outer circumferential edge of the locking cover are locked together by multiple screws.

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