CN110723834A - A five-in-one composite filter element with reverse osmosis - Google Patents

Abstract

The invention discloses a five-in-one composite filter element with reverse osmosis, comprising a shell, a lower end cover, an upper end cover, a pre-filter element, a reverse osmosis filter element and an inner cavity. The upper end is connected to the inner top of the outer casing through the upper end cover, and the lower end of the inner cavity is sealedly connected to the bottom of the outer casing through the lower end cover. A pre-filter filter channel is formed between the outer casing and the inner cavity, and there are several stages in the pre-filter filter channel. A pre-filter, wherein the outer wall of one side of the inner cavity is close to the innermost pre-filter, and a purified water outlet channel is formed between the outer wall of the other side of the inner cavity and the innermost pre-filter; A reverse osmosis filter element is arranged inside, and a reverse osmosis filter channel is formed between the reverse osmosis filter element and the inner cavity. The invention adopts the five-in-one composite filter element to replace the original pre-filter element + independent reverse osmosis filter element filtration method, greatly reduces the volume of the filter element, facilitates product replacement and installation, and reduces maintenance costs.

Description

A five-in-one composite filter element with reverse osmosis

technical field

The invention relates to the field of water purification equipment, in particular to a five-in-one composite filter element with reverse osmosis.

Background technique

As people's hygiene requirements for drinking water are getting higher and higher, water purifiers are used more and more widely in various occasions (such as homes, businesses and some entertainment venues, etc.), traditional reverse osmosis water purifiers need to be assembled before The filter element assembly is generally a filter bottle with a filter element, or a filter bottle with multiple pre-filter elements.

In the prior art, CN 201810043284.0, titled "reverse osmosis composite filter element assembly"; including a mounting head, a casing and a reverse osmosis filter element located in the casing, the mounting head is located at the end of the casing, and the reverse osmosis filter element includes a central pipe and the reverse osmosis membrane wound on the central pipe, a raw water aqueduct layer and a pure water aqueduct layer are formed in the reverse osmosis membrane, and the pure water aqueduct layer communicates with the first flow channel in the central pipe, including: a raw water inlet , pure water outlet and concentrated water outlet, the raw water inlet and concentrated water outlet are both located on the installation head, the pure water outlet is located on the shell and communicated with the reverse osmosis filter element away from the installation head; post purification The filter element is located between the end of the reverse osmosis filter element and the bottom wall of the shell, and includes a water inlet side and a water outlet side. The water outlet side of the purification filter element is communicated with the pure water outlet. The invention arranges the reverse osmosis filter element and the rear purification unit in a filter element assembly, which reduces the number of filter elements in the reverse osmosis water purifier, and accordingly simplifies the pipe between the filter elements. It also simplifies filter life monitoring and reminders and filter replacement.

CN 201610277992.1, the name is "a five-in-one flat-pressed filter element for drinking water treatment"; it includes a sintered coconut shell activated carbon rod, and the center position of the sintered coconut shell activated carbon rod is a hollow structure, forming a through internal cavity, so The outer wall of the sintered coconut shell activated carbon rod is provided with a PE preliminary filter shell, the inner wall of the PE preliminary filter shell wraps the sintered coconut shell activated carbon rod, and a narrow water flow buffer is formed between the PE preliminary filter shell and the inner layer carbon rod. interlayer, the inner cavity of the sintered coconut shell activated carbon rod is provided with a softening resin tank, the cation softening resin is arranged in the cavity of the softening resin tank, and the upper end of the softening resin tank is provided with a water inlet hole, and the softening resin tank is provided with a water inlet. A sintered activated carbon canister is arranged at the lower end of the resin canister, bromine resin particles are arranged in the cavity at the entrance of the sintered activated carbon canister, and the outlet of the sintered activated carbon canister is connected to the inlet of the hollow fiber membrane canister. The outlet of the body is connected to the water outlet, and the inner cavity of the hollow fiber filter membrane tank body is provided with a hollow fiber ultrafiltration membrane wire; the PE preliminary filter shell is specifically a cylindrical structure, and the PE preliminary filter shell is specifically a PE sintered filter element The upper end of the softening resin tank is encapsulated with a cover plate, the cover plate is evenly distributed with water inlet holes, the inner side of the cover plate is provided with a PP cotton gasket, and the cavity below the PP cotton gasket The cation softening resin is arranged, and five different filtration or treatment materials are used to make specific modules and integrate them into one. The structure is compact and does not increase the resistance of water passing. The volume of the filter element is reduced, the product replacement and installation are convenient, and the use cost is also reduced.

CN 201520157644.1, titled "a composite integrated multi-membrane filter element"; including a filter housing and the filter material in it, the filter material is sequentially from the water inlet end to the water outlet end of a hollow fiber membrane, an activated carbon fiber filter element and an adsorption filter. The filter housing is a split-type removable structure. The filter housing includes an upper cover and a lower shell. The upper cover and the lower shell cooperate with the middle shell to form a removable structure, and the middle shell and the hollow fiber membrane cooperate to form a hollow structure. Fiber membrane membrane module, adsorption filter material and activated carbon fiber filter element are screwed in the upper cover, the upper cover is screwed with the middle shell, the membrane head of the hollow fiber membrane is placed in the middle shell, and the other interface of the middle shell is screwed with the lower shell Therefore, the main part of the hollow fiber membrane is placed in the lower shell, and the combination is convenient and quick.

However, none of them can realize that the pre-filter and reverse osmosis filter can be installed in the same filter bottle at the same time, and cannot really satisfy only one filter bottle installed on a water purifier. In view of this, it is necessary to further improve the existing technology.

SUMMARY OF THE INVENTION

The technical problem solved by the present invention is to provide a five-in-one composite filter element with reverse osmosis, so as to solve the above-mentioned shortcomings in the background technology.

The technical problem solved by the present invention adopts the following technical solutions to realize:

A five-in-one composite filter element with reverse osmosis comprises a shell, a lower end cover, an upper end cover, a pre-filter element, a reverse osmosis filter element and an inner cavity. The upper end of the inner cavity is sealedly connected to the inner top of the outer shell through the upper end cover, and the lower end of the inner cavity is sealed to the bottom of the outer shell through the lower end cover. There are several stages of pre-filters in the channel, wherein the outer wall on one side of the inner cavity is close to the innermost pre-filter, and a purified water outlet is formed between the outer wall on the other side of the inner cavity and the innermost pre-filter. aisle;

The inside of the inner cavity is provided with a reverse osmosis filter element. The reverse osmosis filter element includes a central pipe and a reverse osmosis membrane wound on the central pipe. A reverse osmosis filter channel is formed between the reverse osmosis filter element and the inner cavity. The lower part of the reverse osmosis membrane A waste water channel is formed by sealing the reverse osmosis membrane sealing ring with the inner wall of the inner cavity, and a hollow reverse osmosis filtration effluent channel is formed inside the central pipe.

The lower end cover is provided with a raw water inlet corresponding to a pre-filter filter channel, a purified water outlet corresponding to a purified water outlet channel, a booster pump water inlet corresponding to a reverse osmosis filter channel, a waste water outlet corresponding to the waste water channel, and a corresponding reverse osmosis filter channel. The pure water outlet of the water outlet channel.

Further, the raw water inlet, the booster pump water inlet, the pure water outlet, the purified water outlet and the waste water outlet are arranged side by side along the radial direction of the lower end cover.

Further, the upper surface of the lower end cover protrudes upwards and is provided with inner cavity water inlet holes corresponding to the water inlet of the booster pump and the reverse osmosis filter channel.

Further, the inner cavity includes a hollow cylindrical body and an arc-shaped protrusion, one side of the cylindrical body is protruded with an arc-shaped protrusion, and the upper surface of the lower end cover is provided with a semi-circular sealing plate protruding upward, A water inlet hole of the inner cavity communicated with the water inlet of the booster pump is formed between the semicircular sealing plate and the arc-shaped protrusion.

Further, the inner surface of the lower end cap is provided with plug posts corresponding to the central pipe and the pure water outlet, the plug posts are provided with at least two sealing ring grooves, and the sealing ring grooves are provided with sealing rings.

Further, the pre-filter includes a PP cotton filter, a pre-activated carbon filter and a rear PP cotton filter in sequence from the outside to the inside.

Further, a rear activated carbon filter element is built in the lower end of the central pipe.

Further, the inner bottom of the upper end cover is provided with an annular sealing groove corresponding to the inner cavity, and the upper end cover is welded to the inner cavity.

Further, the lower end cover is integrally formed with the inner cavity, and the outer wall of the lower end cover is welded and connected to the inner wall of the casing.

The beneficial effects of the present invention are:

1 The present invention grows an inner cavity on the traditional filter head, and the inner cavity is made into a non-circular special shape (the special shape is a protrusion made separately on the basis of the whole circle as the outline, and the raised part is There is a through hole in the middle for water entry). However, the sealing ring of the reverse osmosis membrane is a perfect circle, which can seal the water normally, and can also enter the water through the water inlet hole of the inner cavity. The upper end of the water inlet hole of the inner cavity must be higher than the sealing ring of the reverse osmosis membrane, and the inner cavity The body is welded with the end cover, so that the water passing through the reverse osmosis membrane can be closed and circulated in the inner cavity. PP cotton, and put activated carbon at the lower end of the reverse osmosis membrane, then weld the end cap and the inner cavity, and finally weld the filter bottle and the inner cavity, so that the five filter elements are combined together to form a five-in-one filter element.

2. The layout is reasonable and the structure is compact. The water channel in the filter bottle is reasonable and smooth, and the water inlet and outlet only need to be distributed at one end, which is beautiful and makes the installation method of the filter bottle more flexible. PP cotton), reverse osmosis filter element and rear activated carbon filter element are integrated in one shell, which reduces production cost and simplifies the layout of pipelines between filter elements.

3. Using a five-in-one composite filter element with reverse osmosis provided by the present invention can replace the original pre-filter element + independent reverse osmosis filter element filtration method, which greatly reduces the volume of the filter element and makes product replacement and installation convenient. , but also reduce maintenance costs.

4. The use of a five-in-one composite filter element with reverse osmosis provided by the present invention can satisfy the organic matter, colloid, bacteria, viruses and other impurities in the raw water, especially the comprehensive filtration of impurities such as inorganic salts and heavy metal ions, and can also play a It can absorb different colors and odors and improve the taste of pure water.

Description of drawings

Fig. 1 is the front view of preferred embodiment 1 of the present invention;

Fig. 2 is the top view of the preferred embodiment 1 of the present invention;

Fig. 3 is the bottom view of preferred embodiment 1 of the present invention;

Fig. 4 is the sectional view along A-A of Fig. 1;

Figure 5 is a cross-sectional view of Figure 4 after removing the casing;

Fig. 6 is the top view of Fig. 4;

7 is a side view of the preferred embodiment 1 of the present invention;

Fig. 8 is the sectional view along B-B of Fig. 7;

Fig. 9 is the sectional view along C-C of Fig. 7;

In the figure, shell 1, lower end cover 2, upper end cover 3, front PP cotton filter element 4, front activated carbon filter element 5, rear PP cotton filter element 6, reverse osmosis filter element 7, rear activated carbon filter element 8, reverse osmosis membrane sealing ring 9. Inner cavity 10, plug column 11, semicircular sealing plate 12, raw water inlet 21, booster pump water inlet 22, pure water outlet 23, purified water outlet 24, waste water outlet 25, annular sealing groove 31, center Tube 71, reverse osmosis membrane 72, cylindrical body 100, arc-shaped protrusion 101, inner cavity water inlet 102, pre-filter filter channel 200, purified water outlet channel 300, reverse osmosis filter channel 400, waste water channel 500, The reverse osmosis filters out the water channel 600 .

Detailed ways

In order to make it easy to understand the technical means, creation features, achieved goals and effects of the present invention, the present invention will be further described below with reference to the specific figures.

Embodiment 1: refer to a kind of five-in-one composite filter element with reverse osmosis shown in FIG. 1-FIG. 9, including shell 1, lower end cover 2, upper end cover 3, pre-filter element, reverse osmosis filter element 7 and inner cavity 10 , the outer casing 1 has a cylindrical structure with a lower opening, an inner cavity 10 is arranged inside the outer casing 1, the upper end of the inner cavity 10 is sealedly connected with the inner top of the outer casing 1 through the upper end cover 3, and the lower end of the inner cavity 10 is through the lower end cover. 2 is sealed with the bottom of the casing 1. A pre-filter filter channel 200 is formed between the casing 1 and the inner cavity 10. The pre-filter filter channel 200 is provided with several stages of pre-filters. The outer wall is in close contact with the innermost pre-filter, and a purified water outlet channel 300 is formed between the outer wall on the other side of the inner cavity 10 and the innermost pre-filter;

The interior of the inner cavity 10 is provided with a reverse osmosis filter element 7, the reverse osmosis filter element 7 includes a central pipe 71 and a reverse osmosis membrane 72 wound on the central pipe 71, and reverse osmosis is formed between the reverse osmosis filter element 7 and the inner cavity body 10. In the filter channel 400, the lower part of the reverse osmosis membrane 72 is sealed with the inner wall of the inner cavity 10 through the reverse osmosis membrane sealing ring 9 to form a waste water channel 500, and a hollow reverse osmosis filtered water outlet channel 600 is formed inside the central pipe 71,

The lower end cover 2 is provided with a raw water inlet 21 corresponding to the pre-filter filter channel 200, a purified water outlet 24 corresponding to the purified water outlet channel 300, a booster pump water inlet 22 corresponding to the reverse osmosis filter channel 400, and a corresponding waste water channel 500. The waste water outlet 25 and the pure water outlet 23 corresponding to the reverse osmosis filtered water outlet channel 600 .

In this embodiment, as shown in FIG. 3 , the raw water inlet 21 , the booster pump water inlet 22 , the pure water outlet 23 , the purified water outlet 24 and the waste water outlet 25 are arranged side by side along the radial direction of the lower end cover 2 .

In this embodiment, the upper surface of the lower end cover 2 protrudes upward and is provided with the inner cavity water inlet hole 102 corresponding to the booster pump water inlet 22 and the reverse osmosis filter channel 400 .

In this embodiment, the inner cavity 10 includes a hollow cylindrical body 100 and an arc-shaped protrusion 101. One side of the cylindrical body 100 is protruded with an arc-shaped protrusion 101, and the upper surface of the lower end cover 2 is upwardly convex. A semicircular sealing plate 12 is provided, and an inner cavity water inlet hole 102 communicated with the water inlet 22 of the booster pump is formed between the semicircular sealing plate 12 and the arc-shaped protrusion 101 .

In this embodiment, as shown in FIG. 4 , the inner surface of the lower end cover 2 is provided with a plug-in column 11 corresponding to the central pipe 71 and the pure water outlet 23 , and the plug-in column 11 is provided with at least two sealing ring grooves. A sealing ring is arranged in the groove.

In this embodiment, as shown in FIG. 4 , the pre-filter includes a PP cotton filter 4 , a pre-activated carbon filter 5 and a rear PP cotton filter 6 sequentially from the outside to the inside.

In this embodiment, as shown in FIG. 4 , a rear activated carbon filter element 8 is built in the lower end of the central pipe 71 .

In this embodiment, as shown in FIG. 5 , the inner bottom of the upper end cover 3 is provided with an annular sealing groove 31 corresponding to the inner cavity 10 , and the upper end cover 3 is connected to the inner cavity 10 by welding.

In this embodiment, as shown in FIG. 5 , the lower end cover 2 and the inner cavity 10 are integrally formed, and the outer wall of the lower end cover 2 is connected to the inner wall of the housing 1 by welding.

The water filtration process of the present invention is:

The tap water is introduced into the pre-filter filter channel 200 from the raw water inlet 21, and passes through the pre-PP cotton filter 4, the pre-activated carbon filter 5 and the rear PP cotton filter 6 in turn to play the role of preliminary filtration, and the water after the preliminary filtration enters the purification The water outlet channel 300 is then driven into the booster pump water inlet 22 from the purified water outlet 24 through the pipeline and the booster pump, and the purified water enters the reverse osmosis filtration channel 400 from the booster pump water inlet 22, and the purified water passes through the reverse osmosis membrane 72. The top enters the filtration, and the filtered pure water enters the rear activated carbon filter element 8 through the reverse osmosis filtration outlet channel 600 and is filtered out from the pure water outlet 23.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. A five-in-one composite filter element with reverse osmosis, comprising a shell (1), a lower end cover (2), an upper end cover (3), a pre-filter element, a reverse osmosis filter element (7) and an inner cavity (10), It is characterized in that the outer casing (1) has a cylindrical structure with a lower opening, an inner cavity (10) is arranged inside the outer casing (1), and the upper end of the inner cavity (10) is connected to the outer casing (1) through the upper end cover (3) The inner top of the inner cavity (10) is sealedly connected with the bottom of the outer shell (1) through the lower end cover (2), and a pre-filter filter channel ( 200), the pre-filter filter channel (200) is provided with several stages of pre-filters, wherein the outer wall of one side of the inner cavity (10) is in close contact with the innermost pre-filter, and the other side of the inner cavity (10) A purified water outlet channel (300) is formed between the outer wall and the innermost pre-filter element; The inner cavity (10) is provided with a reverse osmosis filter element (7), and the reverse osmosis filter element (7) includes a central pipe (71) and a reverse osmosis membrane (72) wound on the central pipe (71). A reverse osmosis filter channel (400) is formed between the filter element (7) and the inner cavity (10), and the lower part of the reverse osmosis membrane (72) is formed by sealing with the inner wall of the inner cavity (10) through the reverse osmosis membrane sealing ring (9) A waste water channel (500), a hollow reverse osmosis filtered water outlet channel (600) is formed inside the central pipe (71), The lower end cover (2) is provided with a raw water inlet (21) corresponding to a pre-filter filter channel (200), a purified water outlet (24) corresponding to a purified water outlet channel (300), and a reverse osmosis filter channel (400) The booster pump water inlet (22), the waste water outlet (25) corresponding to the waste water channel (500), and the pure water outlet (23) corresponding to the reverse osmosis filtering water outlet channel (600). 2. A five-in-one composite filter element with reverse osmosis according to claim 1, characterized in that the raw water inlet (21), the booster pump water inlet (22), the pure water outlet (23), the purified water outlet (24) and the waste water outlet (25) are arranged side by side along the radial direction of the lower end cover (2). 3 . The five-in-one composite filter element with reverse osmosis according to claim 1 , wherein the upper surface of the lower end cover ( 2 ) protrudes upward and is provided with a corresponding booster pump water inlet ( 22 ) and The inner cavity body water inlet hole (102) of the reverse osmosis filter channel (400). 4. The five-in-one composite filter element with reverse osmosis according to claim 2, wherein the inner cavity (10) comprises a hollow cylindrical body (100) and an arc-shaped protrusion (101), the column One side of the body (100) is protruded with an arc-shaped protrusion (101), and the upper surface of the lower end cover (2) is provided with a semi-circular sealing plate (12) protruding upward, and the semi-circular sealing plate ( 12) An inner cavity water inlet hole (102) communicated with the booster pump water inlet (22) is formed between the arc-shaped protrusion (101). 5 . The five-in-one composite filter element with reverse osmosis according to claim 1 , wherein the inner surface of the lower end cover ( 2 ) is provided with inserts corresponding to the central pipe ( 71 ) and the pure water outlet ( 23 ). 6 . The connecting post (11) is provided with at least two sealing ring grooves on the inserting post (11), and a sealing ring is arranged in the sealing ring groove. 6 . The five-in-one composite filter element with reverse osmosis according to claim 1 , wherein the pre-filter element sequentially comprises a PP cotton filter element ( 4 ), a pre-activated carbon filter element ( 5 ) and a rear filter element from the outside to the inside. 7 . Install the PP cotton filter element (6). 7 . The five-in-one composite filter element with reverse osmosis according to claim 1 , wherein a rear activated carbon filter element ( 8 ) is built in the lower end of the central pipe ( 71 ). 8 . 8. The five-in-one composite filter element with reverse osmosis according to claim 1, wherein the inner bottom of the upper end cover (3) is provided with an annular sealing groove (31) corresponding to the inner cavity (10), The upper end cover (3) is connected with the inner cavity body (10) by welding. 9. The five-in-one composite filter element with reverse osmosis according to claim 1, wherein the lower end cover (2) and the inner cavity (10) are integrally formed, and the outer wall of the lower end cover (2) is formed with The inner wall of the housing (1) is welded and connected.

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