Multi-filtering single filter element and multi-filtering device

Abstract

The invention discloses a multi-filtering single filter element and a multi-filtering device, and relates to the field of filtering equipment, the multi-filtering single filter element comprises a filter element main body, a top cover and a filter element mounting cylinder, the top cover is arranged at the top of the filter element main body and is used for sealing the top of the filter element main body, and the filter element mounting cylinder is arranged at the lower part of the filter element main body in a sleeving manner; an opening is formed in the side wall of the filter element mounting cylinder, a first sealing part is arranged at the upper part of the outer side wall of the filter element mounting cylinder, the filter element main body, the top cover and the filter element mounting cylinder are all arranged in the shell, and the bottom of the filter element mounting cylinder corresponds to the position of a water inlet of the shell; one side of the upper part of the filter element main body corresponds to the position of a water outlet of a shell, a gap is formed between the lower part of the filter element mounting cylinder and the shell, and the upper part of the filter element mounting cylinder is hermetically connected with the inner side wall of the shell through a first sealing part. According to the invention, multiple times of filtration can be realized by adopting the single filter element, so that water is repeatedly and fully filtered, and the filtering effect is improved.

Description

Technical Field

[0001] The present invention relates to the field of filtering equipment, and particularly to a multi-stage filtering single filter element and a multi-stage filtering device. Background Art

[0002] In existing filtering shower heads and filtering faucets, single-stage filtering is performed using a single filter element. Under normal circumstances, water enters from the outside of the filter element into the inside of the filter element, and then exits from the inside. This structure can only filter once and cannot repeatedly and fully filter water, resulting in a poor filtering effect. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a multi-stage filtering single filter element and a multi-stage filtering device, which can achieve multiple filtrations using a single filter element, thereby repeatedly and fully filtering water and improving the filtering effect.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides a multi-stage filtering single filter element, including a filter element main body, a top cover, and a filter element installation cylinder. The top cover is arranged on the top of the filter element main body and is used to seal the top of the filter element main body. The top of the filter element installation cylinder is an open structure and the bottom is a closed structure. The filter element installation cylinder is sleeved on the lower part of the filter element main body. The outer side wall of the filter element main body is attached to the inner side wall of the filter element installation cylinder. An opening is provided on the side wall of the filter element installation cylinder. A first sealing component is arranged on the upper part of the outer side wall of the filter element installation cylinder. The filter element main body, the top cover, and the filter element installation cylinder are all used to be arranged in a housing. The bottom of the filter element installation cylinder is used to correspond to the water inlet position of the housing. One side of the upper part of the filter element main body is used to correspond to the water outlet position of the housing. A gap is formed between the lower part of the filter element installation cylinder and the housing. The upper part of the filter element installation cylinder is used to be hermetically connected to the inner side wall of the housing through the first sealing component.

[0006] Preferably, a top annular groove is arranged on the lower part of the top cover, and the top of the filter element main body is clamped in the top annular groove.

[0007] Preferably, a bottom annular groove is arranged at the bottom in the filter element installation cylinder, and the bottom of the filter element main body is clamped in the bottom annular groove.

[0008] Preferably, it further includes a sealing mechanism and an intermediate partition. The intermediate partition is fixedly arranged inside the filter element main body, and is sealingly connected between the outer side wall of the intermediate partition and the inner side wall of the filter element main body; the sealing mechanism is fixedly sleeved outside the filter element installation cylinder and corresponds to the opening position. The inside of the sealing mechanism is sealingly connected to the outer side walls of the filter element installation cylinder and the filter element main body, and the outside of the sealing mechanism is used for sealing connection with the inner side wall of the housing. The first sealing member, the intermediate partition and the sealing mechanism are arranged at intervals in sequence.

[0009] Preferably, the sealing mechanism includes an annular block and a second sealing member. The annular block is fixedly sleeved outside the filter element installation cylinder and corresponds to the opening position. The inside of the annular block is sealingly connected to the outer side walls of the filter element installation cylinder and the filter element main body. A second annular installation groove is arranged outside the annular block, and the second sealing member is arranged in the second annular installation groove. The second sealing member is used for sealing connection with the inner side wall of the housing.

[0010] Preferably, the filter element installation cylinder includes a bottom plate, a first cylinder, an annular connecting plate and a second cylinder connected in sequence from bottom to top. The opening is arranged on the side wall of the first cylinder. The outer side wall of the filter element main body is attached to the inner side wall of the first cylinder. The outside of the first cylinder is used to form the gap with the housing. The inner and outer sides of the annular connecting plate are respectively connected to the first cylinder and the second cylinder. The outer diameter of the second cylinder is larger than that of the first cylinder. A first annular installation groove is arranged outside the second cylinder, and the first sealing member is arranged in the first annular installation groove. A central cylinder is arranged at the center of the upper part of the bottom plate, and the bottom annular groove is formed between the central cylinder and the first cylinder.

[0011] Preferably, the opening is arranged in two, and the two openings are symmetrically arranged on both sides of the first cylinder; two first annular installation grooves are arranged outside the second cylinder, and one first sealing member is arranged in each first annular installation groove; two second annular installation grooves are arranged outside the annular block, and one second sealing member is arranged in each second annular installation groove.

[0012] The present invention further provides a multi - filter device, which includes a multi - filter single filter element and the housing. The bottom end of the housing is provided with the water inlet, and the top end is a closed structure. One side of the upper part of the housing is provided with the water outlet. The filter element main body, the top cover and the filter element installation cylinder are all arranged in the housing. The top cover can be snap - connected to the top in the housing. The bottom of the filter element installation cylinder corresponds to the position of the water inlet. One side of the upper part of the filter element main body corresponds to the position of the water outlet. A gap is formed between the lower part of the filter element installation cylinder and the housing. The upper part of the filter element installation cylinder is hermetically connected to the inner side wall of the housing through the first sealing member.

[0013] Preferably, the housing is a faucet housing.

[0014] Preferably, the housing is a shower head housing. The shower head housing includes an upper housing, a bottom housing, a water inlet pipe, a water outlet pipe, a connecting ring and a water outlet plate. The top of the upper housing is closed, and an installation opening is provided at the bottom. The bottom housing can be detachably installed in the installation opening. The bottom of the bottom housing is provided with the water inlet, and the water inlet pipe is connected to the water inlet. External threads are provided on the outer side wall of the water inlet pipe. One side of the upper part of the upper housing is provided with the water outlet, and the water outlet pipe is connected to the water outlet. The connecting ring can be detachably installed at one end of the water outlet pipe away from the water outlet. The water outlet plate is provided at one end of the connecting ring away from the water outlet, and a plurality of water outlet holes are provided on the water outlet plate. A plurality of clamping plates are arranged circumferentially at the top in the upper housing, and a clamping groove for clamping the top cover is formed at the lower part of the plurality of clamping plates.

[0015] The present invention has achieved the following technical effects compared with the prior art:

[0016] The filter element main body, the top cover and the filter element installation cylinder of the multi - filter single filter element of the present invention are all used to be arranged in the housing. The bottom of the filter element installation cylinder is used to correspond to the position of the water inlet of the housing. One side of the upper part of the filter element main body is used to correspond to the position of the water outlet of the housing. A gap is formed between the lower part of the filter element installation cylinder and the housing. The upper part of the filter element installation cylinder is used to be hermetically connected to the inner side wall of the housing through the first sealing member. When in use, water enters from the water inlet of the housing, enters the inside of the filter element main body from the outside through the gap between the filter element installation cylinder and the housing and the opening on the filter element installation cylinder, then passes through the filter element main body from the inside to the outside above the first sealing member, and is discharged through the water outlet, so that multiple filtrations can be realized with a single filter element, and thus the water can be filtered repeatedly and sufficiently, improving the filtration effect. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 Structural schematic diagram of the multi-filter single filter element provided by the present invention;

[0019] Figure 2 External structural schematic diagram of the multi-filter single filter element provided by the present invention when installed in the shower head housing;

[0020] Figure 3 Cross-sectional view of the multi-filter single filter element provided by the present invention when installed in the shower head housing and without a sealing mechanism and an intermediate partition;

[0021] Figure 4 Cross-sectional view of the multi-filter single filter element provided by the present invention when installed in the shower head housing and with a sealing mechanism and an intermediate partition;

[0022] Figure 5 Structural schematic diagram of the upper housing and the water outlet pipe in the shower head housing provided by the present invention;

[0023] Figure 6 Structural schematic diagram of the bottom housing and the water inlet pipe in the shower head housing provided by the present invention.

[0024] Explanation of reference numerals: 1, filter element main body; 2, top cover; 3, filter element installation cylinder; 301, bottom plate; 302, first cylinder; 303, second cylinder; 304, central cylinder; 4, opening; 5, first sealing member; 6, upper housing; 7, bottom housing; 8, water inlet pipe; 9, water outlet pipe; 10, water outlet plate; 11, water outlet hole; 12, intermediate partition; 13, annular block; 14, second sealing member; 15, horizontal plate; 16, vertical plate; 17, vertical groove; 18, horizontal groove; 19, elastic convex block; 20, third annular installation groove; 21, third sealing member; 22, installation block; 23, positioning groove; 24, connecting ring; 25, end plate; 26, dispersion cylinder; 27, partition cylinder; 28, through hole; 29, fourth sealing member. Detailed implementation manners

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The object of the present invention is to provide a multi-filter single filter element and a multi-filter device, which can achieve multiple filtrations by using a single filter element, thereby repeatedly and fully filtering water and improving the filtering effect.

[0027] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] As Figures 1 - 6 shown, in this embodiment, a multi-filter single filter element is provided, which includes a filter element main body 1, a top cover 2 and a filter element installation cylinder 3. The filter element main body 1 is a cylindrical structure with open upper and lower ends. The top cover 2 is arranged at the top of the filter element main body 1 and is used to seal the top of the filter element main body 1. The top of the filter element installation cylinder 3 is an open structure and the bottom is a closed structure. The filter element installation cylinder 3 is sleeved on the lower part of the filter element main body 1. The outer side wall of the filter element main body 1 is attached to the inner side wall of the filter element installation cylinder 3. An opening 4 is provided on the side wall of the filter element installation cylinder 3. A first sealing member 5 is arranged on the upper part of the outer side wall of the filter element installation cylinder 3. The filter element main body 1, the top cover 2 and the filter element installation cylinder 3 are all used to be arranged in a housing. The bottom of the filter element installation cylinder 3 is used to correspond to the water inlet position of the housing. One side of the upper part of the filter element main body 1 is used to correspond to the water outlet position of the housing. A gap is formed between the lower part of the filter element installation cylinder 3 and the housing. The gap in this embodiment is an annular gap. The upper part of the filter element installation cylinder 3 is used to be hermetically connected to the inner side wall of the housing through the first sealing member 5.

[0029] During use, water enters from the water inlet of the housing, enters the inside of the filter element main body 1 from the outside to the inside through the gap between the filter element installation cylinder 3 and the housing and the opening 4 on the filter element installation cylinder 3, and then passes through the filter element main body 1 from the inside to the outside above the first sealing member 5 and is discharged through the water outlet, so that multiple filtrations can be achieved by using a single filter element, thereby repeatedly and fully filtering water and improving the filtering effect.

[0030] Specifically, a top annular groove is provided at the lower part of the top cover 2, and the top of the filter element main body 1 is clamped in the top annular groove.

[0031] Specifically, a bottom annular groove is provided at the bottom of the filter element installation cylinder 3, and the bottom of the filter element main body 1 is clamped in the bottom annular groove.

[0032] As Figure 4As shown in the figure, the present embodiment further includes a sealing mechanism and an intermediate partition 12. The intermediate partition 12 is fixedly arranged inside the filter element main body 1, and is sealingly connected between the outer side wall of the intermediate partition 12 and the inner side wall of the filter element main body 1; the sealing mechanism is fixedly sleeved outside the filter element installation cylinder 3 and corresponds to the position of the opening 4. The inside of the sealing mechanism is sealingly connected to the filter element installation cylinder 3 and the outer side wall of the filter element main body 1. The outside of the sealing mechanism is used for sealing connection with the inner side wall of the housing. The first sealing member 5, the intermediate partition 12 and the sealing mechanism are arranged at intervals in sequence.

[0033] After the sealing mechanism and the intermediate partition 12 are arranged, the section between the water inlet and the sealing mechanism is the first filtration section, the section between the sealing mechanism and the intermediate partition 12 is the second filtration section, the section between the intermediate partition 12 and the first sealing member 5 is the third filtration section, and the section between the first sealing member 5 and the water outlet is the fourth filtration section.

[0034] During use, water enters from the water inlet of the housing, and enters the inside of the filter element main body 1 from the outside to the inside through the gap and the opening 4 on the filter element installation cylinder 3 in the first filtration section, realizing the first filtration. Then, in the second filtration section, it enters the gap from the inside to the outside through the filter element main body 1, realizing the second filtration. In the third filtration section, it enters the inside of the filter element main body 1 from the outside to the inside, realizing the third filtration. In the fourth filtration section, it passes through the filter element main body 1 from the inside to the outside, realizing the fourth filtration, and is discharged through the water outlet, so that four filtrations can be realized with a single filter element. By setting the sealing mechanism and the intermediate partition 12, the filtration effect is further improved.

[0035] The sealing mechanism includes an annular block 13 and a second sealing member 14. The annular block 13 is fixedly sleeved outside the filter element installation cylinder 3 and corresponds to the position of the opening 4. The inside of the annular block 13 is sealingly connected to the filter element installation cylinder 3 and the outer side wall of the filter element main body 1. A second annular installation groove is arranged outside the annular block 13, and the second sealing member 14 is arranged in the second annular installation groove. The second sealing member 14 is used for sealing connection with the inner side wall of the housing.

[0036] As Figure 3As shown, the filter element installation cylinder 3 includes a bottom plate 301, a first cylinder 302, an annular connecting plate, and a second cylinder 303 that are connected in sequence from bottom to top. An opening 4 is provided on the side wall of the first cylinder 302. The outer side wall of the filter element main body 1 is fitted with the inner side wall of the first cylinder 302. A gap is formed between the outside of the first cylinder 302 and the housing. The inner and outer sides of the annular connecting plate are respectively connected to the first cylinder 302 and the second cylinder 303. The inner diameter of the second cylinder 303 is larger than the inner diameter of the first cylinder 302, and the outer diameter of the second cylinder 303 is larger than the outer diameter of the first cylinder 302. A first annular installation groove is provided on the outside of the second cylinder 303, and a first sealing member 5 is arranged in the first annular installation groove. A central cylinder 304 is provided at the upper center of the bottom plate 301, and a bottom annular groove is formed between the central cylinder 304 and the first cylinder 302.

[0037] In this embodiment, the filter element main body 1 is a cylindrical structure with open upper and lower ends. The top annular groove is a top circular annular groove, the bottom annular groove is a bottom circular annular groove, the middle partition 12 is a circular plate, and the annular connecting plate is a circular ring plate.

[0038] In this specific embodiment, two openings 4 are provided, and the two openings 4 are symmetrically arranged on both sides of the first cylinder 302.

[0039] Specifically, two first annular installation grooves are provided on the outside of the second cylinder 303, and a first sealing member 5 is arranged in each first annular installation groove; two second annular installation grooves are provided on the outside of the annular block 13, and a second sealing member 14 is arranged in each second annular installation groove.

[0040] In this specific embodiment, the first sealing member 5 is a first sealing ring, and the second sealing member 14 is a second sealing ring.

[0041] This embodiment also provides a multi - stage filtration device, which includes a multi - stage filtration single filter element and a housing. The bottom end of the housing is provided with a water inlet, and the top end is a closed structure. One side of the upper part of the housing is provided with a water outlet. The filter element main body 1, the top cover 2, and the filter element installation cylinder 3 are all arranged in the housing. The top cover 2 can be snap - connected to the top in the housing. In this embodiment, a clamping groove for snap - connecting to the top cover 2 is provided at the top in the housing. The bottom of the filter element installation cylinder 3 corresponds to the position of the water inlet, one side of the upper part of the filter element main body 1 corresponds to the position of the water outlet, a gap is formed between the lower part of the filter element installation cylinder 3 and the housing, the upper part of the filter element installation cylinder 3 is hermetically connected to the inner side wall of the housing through the first sealing member 5, and the setting position of the water outlet is higher than the setting position of the first sealing member 5.

[0042] The multi - stage filtration single filter element in this embodiment can be applied to faucets and shower heads. The housing is a faucet housing or a shower head housing.

[0043] In this specific embodiment, the housing is a shower head housing, which includes an upper housing 6, a bottom housing 7, a water inlet pipe 8, a water outlet pipe 9, a connecting ring 24, and a water outlet plate 10. The top of the upper housing 6 is closed, and an installation opening is provided at the bottom. The bottom housing 7 is detachably installed in the installation opening. An inlet is provided at the bottom of the bottom housing 7, and a water inlet pipe 8 is connected to the inlet. An external thread is provided on the outer sidewall of the water inlet pipe 8 to facilitate connection with other components. An outlet is provided on one side of the upper part of the upper housing 6, and a water outlet pipe 9 is connected to the outlet. The connecting ring 24 is detachably installed at one end of the water outlet pipe 9 away from the outlet. A water outlet plate 10 is provided at one end of the connecting ring 24 away from the outlet. A plurality of water outlet holes 11 are provided on the water outlet plate 10; the water outlet holes 11 in this embodiment are tapered holes, and the cross-sectional area of the water outlet holes 11 decreases sequentially from the inside to the outside.

[0044] As Figure 5 shown, a plurality of clamping plates are provided along the circumference at the top of the upper housing 6, and a clamping groove for clamping the top cover 2 is formed at the lower part of the plurality of clamping plates. The clamping plates in this embodiment include a horizontal plate 15 and a vertical plate 16 provided at the lower part of the outer end of the horizontal plate 15. The plurality of horizontal plates 15 are sequentially and evenly arranged along the circumference on the top surface of the upper housing 6, and the plurality of vertical plates 16 are sequentially arranged along the circumference on the side surface of the upper housing 6. The plurality of horizontal plates 15 and the plurality of vertical plates 16 form a clamping groove for clamping the top cover 2.

[0045] As Figure 6 shown, two installation grooves are provided at the upper part of the outer side of the bottom housing 7. The installation groove includes a vertical groove 17 and a horizontal groove 18 provided at one side of the lower part of the vertical groove 17. The vertical groove 17 penetrates the top end of the bottom housing 7. An elastic convex block 19 is provided at one end of the horizontal groove 18 away from the vertical groove 17. Two installation blocks 22 are symmetrically provided at the lower part of the inner side of the upper housing 6. A positioning groove 23 matching the structure of the elastic convex block 19 is provided on the inner side of each installation block 22. Each installation block 22 is used to enter a vertical groove 17 from top to bottom and enter one side of the horizontal groove 18, so that the upper housing 6 rotates relative to the bottom housing 7, and then each installation block 22 enters a horizontal groove 18, and each positioning groove 23 is clamped on an elastic convex block 19, thereby realizing the fixed connection between the upper housing 6 and the bottom housing 7.

[0046] Two third annular installation grooves 20 are provided on the outer side of the bottom housing 7. Both of the two third annular installation grooves 20 are provided at the lower part of the horizontal groove 18. A third sealing component 21 is provided in each third annular installation groove 20. The third sealing component 21 is provided between the bottom housing 7 and the upper housing 6. By providing the third sealing component 21, the connection between the bottom housing 7 and the upper housing 6 is sealed. The third sealing component 21 in this embodiment is a third sealing ring.

[0047] It should be noted that, in addition to the above connection method, the bottom shell 7 and the upper shell 6 can also be connected by a threaded connection. Specifically, an external thread is provided on the upper part of the outer side of the bottom shell 7, and an internal thread is provided on the inner side of the installation opening of the upper shell 6.

[0048] As Figure 3 shown, one end of the connecting ring 24 is threadedly installed inside the water outlet pipe 9. A dispersing component is provided in the water outlet pipe 9 and the connecting ring 24. The dispersing component includes a dispersing cylinder 26, a separating cylinder 27 and two end plates 25. The two end plates 25 are respectively arranged at both ends of the dispersing cylinder 26. The separating cylinder 27 is sleeved inside the dispersing cylinder 26, and both ends of the separating cylinder 27 are respectively connected to the two end plates 25. An annular channel is formed between the dispersing cylinder 26 and the separating cylinder 27. A plurality of through holes 28 communicating with the annular channel are arranged on each end plate 25 in the circumferential direction. The water at the water outlet enters the annular channel through the plurality of through holes 28 of one end plate 25, and then is discharged through the plurality of through holes 28 of the other end plate 25, and finally is sprayed to the outside through the plurality of water outlet holes 11 on the water outlet plate 10.

[0049] Two fourth annular mounting grooves are provided on the outer part of the dispersing cylinder 26. A fourth sealing component 29 is arranged in each fourth annular mounting groove. One fourth sealing component 29 is located between the dispersing cylinder 26 and the water outlet pipe 9, and the other fourth sealing component 29 is arranged between the dispersing cylinder 26 and the connecting ring 24, thereby realizing the sealing between the dispersing cylinder 26 and the water outlet pipe 9 and the connecting ring 24. The fourth sealing component 29 in this embodiment is a fourth sealing ring.

[0050] In this specification, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A multi-filtration single filter element, characterized in that: The filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention, wherein the filter element of the embodiment of the present invention is a filter element of the embodiment of the present invention 2. The multi-filtration single filter element according to claim 1, characterized in that: A top annular groove is provided at the lower part of the top cover, and the top of the filter element body is clamped in the top annular groove.

3. The multi-filtration single filter element according to claim 1, characterized in that: A bottom annular groove is provided at the bottom of the filter element installation cylinder, and the bottom of the filter element main body is clamped in the bottom annular groove.

4. The multi-filtration single filter element according to claim 2, characterized in that: It also includes a sealing mechanism and a middle partition, wherein the middle partition is fixedly arranged inside the filter element main body, and the outer side wall of the middle partition is sealedly connected to the inner side wall of the filter element main body; the sealing mechanism is fixedly sleeved on the outside of the filter element mounting tube and corresponds to the opening position, the interior of the sealing mechanism is sealedly connected to the filter element mounting tube and the outer side wall of the filter element main body, and the exterior of the sealing mechanism is used for sealing connection with the inner side wall of the outer shell, and the first sealing component, the middle partition and the sealing mechanism are arranged in sequence.

5. The multi-filtration single filter element according to claim 4, characterized in that: The sealing mechanism includes an annular block and a second sealing component. The annular block is fixedly sleeved on the outside of the filter element mounting cylinder and corresponds to the opening position. The inside of the annular block is sealedly connected to the filter element mounting cylinder and the outer side wall of the filter element body. A second annular mounting groove is provided on the outside of the annular block. The second sealing component is provided in the second annular mounting groove. The second sealing component is used for sealing connection with the inner side wall of the outer shell.

6. The multi-filtration single filter element according to claim 5, characterized in that: The filter element mounting cylinder includes a bottom plate, a first cylinder, an annular connecting plate and a second cylinder which are sequentially connected from bottom to top, the opening being arranged on the side wall of the first cylinder, the outer side wall of the filter element body being fitted with the inner side wall of the first cylinder, the outside of the first cylinder being used to form the gap with the outer shell, the inner and outer sides of the annular connecting plate being respectively connected with the first cylinder and the second cylinder, the outer diameter of the second cylinder being larger than the outer diameter of the first cylinder, the outside of the second cylinder being provided with a first annular mounting groove, the first sealing component being provided in the first annular mounting groove, a center cylinder being provided at the upper center of the bottom plate, the bottom annular groove being formed between the center cylinder and the first cylinder.

7. The multi-filtration single filter element according to claim 6, characterized in that: The number of the openings is two, and the two openings are symmetrically arranged on both sides of the first cylinder; the outside of the second cylinder is provided with two first annular mounting grooves, and each of the first annular mounting grooves is provided with a first sealing component; the outside of the annular block is provided with two second annular mounting grooves, and each of the second annular mounting grooves is provided with a second sealing component.

8. A multiple filtering device, characterized in that: It comprises a multi-filtration single filter element as described in any one of claims 1 to 7 and the shell, the water inlet is provided at the bottom end of the shell, the top end is a closed structure, the water outlet is provided on one side of the upper part of the shell, the filter element body, the top cover and the filter element mounting cylinder are all arranged in the shell, the top cover can be snapped into the top of the shell, the bottom of the filter element mounting cylinder corresponds to the position of the water inlet, one side of the upper part of the filter element body corresponds to the position of the water outlet, the gap is formed between the lower part of the filter element mounting cylinder and the shell, and the upper part of the filter element mounting cylinder is sealed and connected to the inner wall of the shell through the first sealing component.

9. The multi-filtration device according to claim 8, characterized in that: The shell is a faucet shell.

10. The multi-filtration device according to claim 8, characterized in that: The shell is a shower shell, and the shower shell includes an upper shell, a bottom shell, a water inlet pipe, a water outlet pipe, a connecting ring and a water outlet plate. The top of the upper shell is closed, and a mounting port is provided at the bottom. The bottom shell can be detachably installed in the mounting port. The bottom of the bottom shell is provided with the water inlet, and the water inlet pipe is connected to the water inlet. The outer side wall of the water inlet pipe is provided with an external thread. The water outlet is provided at one side of the upper part of the upper shell, and the water outlet pipe is connected to the water outlet. The connecting ring can be detachably installed on the end of the water outlet pipe away from the water outlet, and the water outlet plate is provided at the end of the connecting ring away from the water outlet, and a plurality of water outlet holes are provided on the water outlet plate; a plurality of clamping plates are circumferentially provided on the top of the upper shell, and a plurality of clamping grooves for clamping the top cover are formed at the lower parts of the plurality of clamping plates.

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