CN212076592U - A pre-pressurized multi-stage integrated composite filter element - Google Patents

Abstract

The utility model discloses a multistage integrated form composite filter core of leading booster-type, including the filter core body that has the filter core head, the overhead raw water inlet A that is equipped with of filter core, check valve P, waste water outlet U and reverse osmosis membrane water inlet R, the filter core body includes the shell of outside-in nested arrangement in proper order, the outer sleeve, reverse osmosis membrane and central barrel, be equipped with the leading filter core unit and the rearmounted filter core unit of mutual isolation in the barrel of centre respectively, raw water inlet A passes through leading filter core unit, reverse osmosis membrane water inlet R communicates with the side of intaking of reverse osmosis membrane, the pure water delivery port of reverse osmosis membrane communicates through the side of intaking of rearmounted filter core unit and check valve P, the waste water delivery port and the waste water outlet. The utility model has the advantages of small in size, compact structure, occupation space are few, installation and maintenance convenient and fast, and raw water inlet A's front end is located to its booster pump, can do leading filtration treatment as required in order to prevent to block up.

Description

A pre-pressurized multi-stage integrated composite filter element

technical field

The utility model relates to a filter element for a water purifier, in particular to a pre-pressurized multi-stage integrated composite filter element.

Background technique

The filter element of the water purifier generally includes various combinations of filter elements. For example, the filter element of the water purifier using a reverse osmosis membrane generally includes a pre-filter element, a reverse osmosis membrane filter element and a rear-mounted filter element. The pre-filter element is the front end of the water purifier. Pretreatment, filtration and purification, and the rear filter element is used as the end of the water purifier to further purify the water and improve the taste. However, because the structures of the filter elements at all levels are independent of each other, the water purifier is bulky, not compact enough, and occupies a large volume. Therefore, how to realize the integration of the filter element structure of the water purifier using the reverse osmosis membrane has become a key technical problem to be solved urgently.

Utility model content

The technical problem to be solved by the utility model: aiming at the above-mentioned problems of the prior art, a pre-pressurized multi-stage integrated composite filter element is provided. It has the advantages of small size, compact structure, less space occupation, and convenient and quick installation and maintenance. The booster pump is located at the front end of the raw water inlet A, and can be pre-filtered as needed to prevent clogging.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A pre-pressurized multi-stage integrated composite filter element includes a filter element body with a filter element head, and the filter element head is provided with a raw water inlet A, a one-way valve P, a waste water outlet U and a reverse osmosis membrane inlet. R, the filter element body includes an outer casing, an outer sleeve, a reverse osmosis membrane and a central cylinder which are sequentially nested from the outside to the inside, and the central cylinder is respectively provided with a pre-filter unit and a rear filter unit that are isolated from each other, The raw water inlet A is communicated with the water inlet side of the reverse osmosis membrane through the front filter element unit and the reverse osmosis membrane water inlet R, and the pure water outlet of the reverse osmosis membrane passes through the rear filter element unit and the inlet of the one-way valve P. The water side is connected, and the waste water outlet of the reverse osmosis membrane is connected with the waste water outlet U.

The front filter unit includes a front upper end cover, a front filter element, a front lower end cover and a front sleeve, and the front filter element is clamped and arranged between the front upper end cover and the front lower end cover and inserted in the front end cover. In the front sleeve, the front upper end cover is provided with a water inlet B and an inner hole, the front filter element is tubular and a cavity C is formed between the outer wall and the inner wall of the front sleeve, and the raw water inlet A through the passage on the filter head body, the water inlet B, and the cavity C are sequentially connected to form the water inlet side passage of the pre-filter element. The filter head is provided with a plug connector with a water outlet hole D. Part of it is inserted in the central pipe G of the pre-filter element, so that the water outlet hole D and the central pipe G of the pre-filter element form the outlet side passage of the pre-filter element. The membrane water inlet R is connected.

The front sleeve is provided with a blind hole with an opening close to one side of the filter element head, and the front filter element and the front lower end cover are all arranged in the blind hole of the front sleeve.

The rear filter element unit includes a rear upper end cover, a rear filter element, a rear lower end cover and a rear sleeve, and the rear filter element is clamped and arranged between the rear upper end cover and the rear lower end cover and inserted in the rear. In the rear sleeve, the rear sleeve is inserted and fixed in the end of the central cylinder away from the filter head, and the rear sleeve has a water inlet L that communicates with the pure water outlet of the reverse osmosis membrane, so the The rear upper end cover is provided with a cavity J and a water outlet K communicated with the central pipe H of the rear filter element, the cavity J, the water outlet K, the central cylinder and the outer wall of the front filter element unit. 1. The cavity Y of the filter head is communicated with the water inlet side of the check valve P, and the filter head is provided with a pure water outlet S on the water outlet side of the check valve P.

A cavity E is formed between the inner wall of the outer sleeve and the outer wall of the reverse osmosis membrane. The cavity E is communicated with the reverse osmosis membrane water inlet R of the reverse osmosis membrane. The inner wall of the reverse osmosis membrane and the outer wall of the central cylinder are connected. A cavity V is formed between them, and the central cylinder is provided with a water inlet M that communicates with the cavity V, and the water inlet M serves as the pure water outlet of the reverse osmosis membrane and the water inlet L of the rear filter element unit. There is a cavity W between the top of the reverse osmosis membrane and the filter head as the waste water outlet and the waste water outlet U to communicate.

A high-pressure pure water chamber F is arranged between the inner wall of the casing and the outer wall of the outer sleeve, and the water inlet M and the high-pressure pure water chamber F communicate with each other through a one-way valve X installed on the central cylinder.

A waste water hole N1, or a waste water valve, or a waste water plug, or a waste water proportional valve is also provided between the cavity W and the waste water outlet U.

The filter head is also provided with a waste water hole N2, or waste water plug, or waste water proportional valve for connecting to the upstream of the booster pump connected to the raw water inlet A, the waste water hole N2, or waste water valve, or waste water plug, or The waste water proportional valve communicates with the cavity W.

Compared with the prior art, the utility model has the following advantages:

1. The filter element body of the present utility model comprises a shell, an outer sleeve, a reverse osmosis membrane and a central cylinder which are nested in sequence from the outside to the inside. The three-in-one permeable membrane and the rear filter element have the advantages of small size, compact structure, less space occupation, and convenient and quick installation and maintenance.

2. The utility model is a pre-pressurized multi-stage integrated composite filter element. The booster pump is arranged at the front end of the raw water inlet A, and can be pre-filtered as required to prevent clogging.

3. If the utility model is to have dual water outlets, that is, when a piece of purified water (water filtered and purified by the pretreatment filter element) is connected to the tap (as domestic water) from the pre-treatment filter element, the utility model is suitable for electronic The switch controls the starting and closing of the water inlet valve (that is, controlling the on-off of the raw water), and the electronic switch-type faucet is used to make double water outlets.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a three-dimensional exploded structure of an embodiment of the present utility model.

3 is a schematic cross-sectional structural diagram of an embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view of a flow channel structure according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of the end surface structure of the filter element head according to the embodiment of the present invention.

6 is a schematic cross-sectional structural diagram of a filter head according to an embodiment of the present invention.

FIG. 7 is a schematic diagram of a water circuit principle according to an embodiment of the present invention.

Detailed ways

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 , the pre-pressurized multi-stage integrated composite filter element of this embodiment includes a filter element body with a filter element head 1 2. The filter element head 1 is provided with a raw water inlet A, a one-way valve P, a waste water outlet U and a reverse osmosis membrane water inlet R, and the filter element body 2 includes a shell 21, an outer sleeve 22, The reverse osmosis membrane 23 and the central cylinder 24 are respectively provided with a pre-filter unit 3 and a rear filter unit 4 which are isolated from each other, and the raw water inlet A passes through the pre-filter unit 3 and the reverse osmosis membrane water inlet R Connected with the water inlet side of the reverse osmosis membrane 23, the pure water outlet of the reverse osmosis membrane 23 is communicated with the water inlet side of the check valve P through the rear filter element unit 4, and the waste water outlet and the waste water outlet U of the reverse osmosis membrane 23 Connected. Referring to Figure 6 and Figure 7, this embodiment is a pre-pressurized multi-stage integrated composite filter element, the booster pump is connected to the front end of the raw water inlet A through the water inlet valve, and a The water inlet three-way ball valve with filter screen can intercept the particulate impurities in the raw water and prevent the water inlet valve from being blocked. The waste water discharge port U of the filter head 1 includes two discharge ports U1 and U2, the water outlet side of the one-way valve P is provided with a pure water outlet S, and the filter head 1 is provided with a water outlet T at the water inlet R of the reverse osmosis membrane, And there is a detachable plug at the water outlet T.

As shown in FIGS. 2 , 3 , 4 , 5 , 6 and 7 , the pre-filter unit 3 includes a front upper end cover 31 , a front filter element 32 , a front lower end cover 33 and a front sleeve 34 , The front filter element 32 is clamped and arranged between the front upper end cover 31 and the front lower end cover 33 and inserted into the front sleeve 34. The front upper end cover 31 is provided with a water inlet B and an inner hole. 32 is tubular and a cavity C is formed between the outer wall and the inner wall of the front sleeve 34. The raw water inlet A is connected to the water inlet of the pre-filter 32 through the passage on the body of the filter element 1, the water inlet B and the cavity C in turn. The side passage, the filter head 1 is provided with a plug connector with a water purification outlet D, and the plug connector is partially inserted into the central pipeline G of the pre-filter 32 and makes the water purification outlet D and the central pipeline of the pre-filter 32. G forms the water outlet side passage of the pre-filter element 32 , and the purified water outlet hole D communicates with the reverse osmosis membrane water inlet R of the reverse osmosis membrane 23 .

As shown in FIG. 2 and FIG. 3 , the front sleeve 34 is provided with a blind hole with an opening close to one side of the filter element head 1 , and the front filter element 32 and the front lower end cover 33 are all arranged in the blind hole of the front sleeve 34 middle.

As shown in Figure 2, Figure 3, Figure 4, Figure 5, Figure 6 and Figure 7, the rear filter element unit 4 includes a rear upper end cover 41, a rear filter element 42, a rear lower end cover 43 and a rear sleeve 44, The rear filter element 42 is clamped and arranged between the rear upper end cover 41 and the rear lower end cover 43 and is inserted into the rear sleeve 44 . The rear sleeve 44 is inserted and fixed in the central cylinder 24 away from the filter element head 1 One end of the rear sleeve 44 is provided with a water inlet L which communicates with the pure water outlet of the reverse osmosis membrane 23, and the rear upper end cover 41 is provided with a cavity J and a central pipe H that communicate with the rear filter element 42. The water outlet K, the cavity J, the water outlet K, the cavity I between the central cylinder 24 and the outer wall of the front filter element unit 3, the cavity Y of the filter element head 1 and the water inlet side of the check valve P are connected, and the filter element head is connected. 1, there is a pure water outlet S on the water outlet side of the check valve P.

As shown in FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 , a cavity E is formed between the inner wall of the outer sleeve 22 and the outer wall of the reverse osmosis membrane 23 . The water inlet R of the reverse osmosis membrane is connected, and a cavity V is formed between the inner wall of the reverse osmosis membrane 23 and the outer wall of the central cylinder 24, and the central cylinder 24 is provided with a water inlet M that communicates with the cavity V, and the water inlet M The pure water outlet of the reverse osmosis membrane 23 communicates with the inlet hole L of the rear filter element unit 4, and a cavity W is provided between the top of the reverse osmosis membrane 23 and the filter element head 1 as a waste water outlet and communicates with the waste water outlet U .

As shown in Figure 2, Figure 3, Figure 4, Figure 5, Figure 6 and Figure 7, between the inner wall of the casing 21 and the outer wall of the outer sleeve 22 is a high pressure pure water chamber F, a water inlet M and high pressure pure water The cavities F communicate with each other through a one-way valve X installed on the central cylinder 24 . The high-pressure pure water chamber F is used for soaking in pure water and flushing the reverse osmosis membrane 23 under the control of the one-way valve X, thereby effectively prolonging the service life of the reverse osmosis membrane 23 .

As shown in Figure 2, Figure 3, Figure 4, Figure 5, Figure 6 and Figure 7, a waste water hole N1 (or waste water valve, or waste water plug, or waste water proportional valve is also provided between the cavity W and the waste water outlet U ). Undoubtedly, as an optional component, the waste water hole N1 can also be arranged outside the pre-pressurized multi-stage integrated composite filter element of this embodiment as required.

As shown in Figure 2, Figure 3, Figure 4, Figure 5, Figure 6 and Figure 7, the filter element head 1 is also provided with a waste water hole N2 (or waste water valve, or waste water plug, or waste water proportional valve), the waste water hole N2 communicates with the cavity W. Undoubtedly, as an optional component, the waste water hole N2 can also be provided outside the pre-pressurized multi-stage integrated composite filter element in this embodiment as required.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims (8)

1. A pre-pressurized multi-stage integrated composite filter element, characterized in that it comprises a filter element body (2) with a filter element head (1), and the filter element head (1) is provided with a raw water inlet A, One-way valve P, waste water outlet U, and reverse osmosis membrane water inlet R, the filter element body (2) includes a shell (21), an outer sleeve (22), a reverse osmosis membrane (23) nested in sequence from outside to inside ) and a central cylinder (24), the central cylinder (24) is respectively provided with a pre-filter unit (3) and a rear filter unit (4) that are isolated from each other, and the raw water inlet A passes through the pre-filter The unit (3), the water inlet R of the reverse osmosis membrane are communicated with the water inlet side of the reverse osmosis membrane (23), and the pure water outlet of the reverse osmosis membrane (23) passes through the rear filter element unit (4) and the one-way valve P The water inlet side of the reverse osmosis membrane (23) is communicated with the waste water outlet U of the reverse osmosis membrane (23). 2. The pre-pressurized multi-stage integrated composite filter element according to claim 1, wherein the pre-filter unit (3) comprises a front upper end cover (31), a pre-filter (32), A front lower end cover (33) and a front sleeve (34), the front filter element (32) is clamped and arranged between the front upper end cover (31) and the front lower end cover (33) and inserted in the front A water inlet B and an inner hole are arranged on the front upper end cover (31), the front filter element (32) is tubular and the outer wall and the inner wall of the front sleeve (34) are placed in the sleeve (34). A cavity C is formed between them, and the raw water inlet A is connected to the water inlet side passage of the pre-filter element (32) through the passage on the body of the filter element head (1), the water inlet B and the cavity C in turn to form the inlet side passage of the pre-filter element (32). 1) There is a plug connector with a clean water outlet D, and the plug connector is partially inserted in the central pipe G of the pre-filter (32) and makes the water-purifying water outlet D and the pre-filter (32). The central pipe G forms the water outlet side passage of the pre-filter element (32), and the purified water outlet hole D communicates with the reverse osmosis membrane water inlet R of the reverse osmosis membrane (23). 3 . The pre-pressurized multi-stage integrated composite filter element according to claim 2 , wherein the front sleeve ( 34 ) is provided with a blind hole with an opening close to one side of the filter element head ( 1 ). 4 . The front filter element (32) and the front lower end cover (33) are all arranged in the blind hole of the front sleeve (34). 4. The pre-pressurized multi-stage integrated composite filter element according to claim 3, wherein the rear filter element unit (4) comprises a rear upper end cover (41), a rear filter element (42), A rear lower end cover (43) and a rear sleeve (44), the rear filter element (42) is clamped and arranged between the rear upper end cover (41) and the rear lower end cover (43) and inserted in the rear Inside the sleeve (44), the rear sleeve (44) is inserted and fixed at the end of the central cylinder (24) away from the filter element head (1), and the rear sleeve (44) has and opposite The water inlet L communicated with the pure water outlet of the permeable membrane (23), the rear upper end cover (41) is provided with a cavity J and a water outlet K communicated with the central pipe H of the rear filter element (42), The cavity J, the water outlet K, the cavity I between the central cylinder (24) and the outer wall of the pre-filter unit (3), the cavity Y of the filter head (1) and the water inlet side of the check valve P The filter head (1) is provided with a pure water outlet S on the water outlet side of the one-way valve P. 5 . The pre-pressurized multi-stage integrated composite filter element according to claim 4 , wherein a cavity E is formed between the inner wall of the outer sleeve ( 22 ) and the outer wall of the reverse osmosis membrane ( 23 ). 6 . , the cavity E is communicated with the reverse osmosis membrane water inlet R of the reverse osmosis membrane (23), and a cavity V is formed between the inner wall of the reverse osmosis membrane (23) and the outer wall of the central cylinder (24). The body (24) is provided with a water inlet hole M that communicates with the cavity V, and the water inlet hole M is used as the pure water outlet of the reverse osmosis membrane (23) to communicate with the water inlet hole L of the rear filter element unit (4). A cavity W is provided between the top of the reverse osmosis membrane (23) and the filter element head (1) as the waste water outlet and the waste water outlet U to communicate. 6 . The pre-pressurized multi-stage integrated composite filter element according to claim 4 , wherein a high-pressure pure water cavity is provided between the inner wall of the casing ( 21 ) and the outer wall of the outer sleeve ( 22 ). 7 . F, the water inlet M and the high-pressure pure water chamber F are communicated through a one-way valve X installed on the central cylinder (24). 7 . The pre-pressurized multi-stage integrated composite filter element according to claim 5 , wherein a waste water hole N1, a waste water valve, or a waste water outlet is also provided between the cavity W and the waste water outlet U. 8 . plug, or waste water proportional valve. 8 . The pre-pressurized multi-stage integrated composite filter element according to claim 4 , wherein the filter element head ( 1 ) is further provided with a filter for connecting to the upstream of the booster pump connected to the raw water inlet A . Waste water hole N2, or waste water plug, or waste water proportional valve, the waste water hole N2, or waste water valve, or waste water plug, or waste water proportional valve communicates with the cavity W.

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