Composite filter element and water purifier applying same

Abstract

The utility model relates to a composite filter element and a water purifier applying the composite filter element, and the composite filter element comprises a shell provided with a water inlet and a water outlet; the filtering assembly comprises at least two filtering materials which are sequentially arranged in an inner and outer sleeved mode, a raw water channel is formed between the filtering material located at the most upstream and the shell, a flow channel is formed between every two adjacent filtering materials, the filtering assembly is characterized by further comprising a water distribution piece, a first through hole and a second through hole are formed in the shell, the first through hole is communicated with the raw water channel, and the second through hole is communicated with the second through hole. The second through hole is communicated with at least one flow channel; a driving mechanism; and the plugging piece is in driving connection with the driving mechanism and can be driven by the driving mechanism to open and close the first through hole and / or the second through hole, so that the raw water channel is in fluid communication with the corresponding flow channel through the water diversion piece in a state that the first through hole is communicated with the second through hole. The utility model has the advantages of improving the utilization rate of the composite filter element and reducing waste.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a composite filter element and a water purifier using the composite filter element. Background Art

[0002] In order to reduce the internal space of the water purifier, a composite filter element consisting of a multi-stage filter element assembly integrated in a cylindrical shell has appeared in the prior art. For example, Chinese utility model patent No. ZL202322371581.7 (authorization announcement No. CN220376402 U) discloses a composite filter element for water purification equipment. Another Chinese utility model patent No. ZL202321426488.5 (authorization announcement No. CN220116383U) discloses an integrated composite filter element.

[0003] Although the composite filter element has the advantage of small space, it has the following limitations: when the composite filter element is used to filter a water source with poor water quality, raw water enters the filter material of the filter element from the outside, and the water filtered by the filter material is discharged. Since there are many impurities such as rust and sand in the raw water, the outer filter material layer may be blocked, thereby causing the entire filter material to be blocked, and the filter element cannot be used normally, which greatly reduces the service life of the filter element. Therefore, further improvements are needed in the existing technology. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a composite filter element which can continue to be used even when the outermost filter material is blocked, in view of the above-mentioned prior art.

[0005] The second technical problem to be solved by the utility model is to provide a water purifier having the above-mentioned composite filter element.

[0006] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a composite filter element, comprising:

[0007] The shell is hollow inside and is provided with a water inlet and a water outlet;

[0008] A filter assembly is arranged inside the housing, the filter assembly includes at least two filter materials arranged inside and outside in sequence, along the flow path of the fluid, a raw water channel is formed between the filter material located most upstream and the housing, and a flow channel is formed between two adjacent filter materials, the filter assembly is arranged to filter the raw water flowing from the water inlet into the raw water channel, and the purified water filtered by the filter assembly flows out of the housing through the water outlet;

[0009] The invention is characterized in that:

[0010] A water dividing member is arranged inside the shell, and is provided with a first through hole and a second through hole penetrating through the wall thickness of the water dividing member, wherein the first through hole is connected to the raw water channel, and the second through hole is connected to at least one flow channel;

[0011] Driving mechanism;

[0012] The blocking member is connected to the driving mechanism and can open and close the first through hole and / or the second through hole under the drive of the driving mechanism, so that when the first through hole and the second through hole are connected, the raw water channel is connected to the corresponding flow channel fluid through the water dividing member.

[0013] The water distribution member is a pipe extending along the axial direction of the filter material. One of the first through hole and the second through hole is opened at one end of the pipe, and the other is opened on the pipe wall of the pipe.

[0014] Preferably, the second through hole is opened on one end of the pipe, and the blocking member is used to open and close the second through hole.

[0015] There are many kinds of structures of the above-mentioned driving mechanism. Preferably, the driving mechanism includes a motor and a push rod connected to the motor, the push rod is telescopic along the axial direction of the pipe, and the push rod can be driven by the motor to telescopically move in a direction close to or away from the second through hole. The blocking member is connected to the push rod drive, so that the blocking member can close or open the second through hole as the push rod moves.

[0016] In order to improve the blocking effect, the blocking member is a disc-shaped blocking block sleeved on the top of the push rod, and the top of the blocking block can abut against the wall of the end cover where the second through hole is located to close the second through hole.

[0017] In order to improve the sealing performance, a sealing ring is also sleeved on the outer periphery of the sealing block, and the outer peripheral wall of the sealing ring forms a sealing connection with the inner peripheral wall of the pipeline.

[0018] Preferably, the first through hole is opened on the pipe wall of the pipe and is located on the extension and retraction path of the push rod. During the extension and retraction process of the push rod, the first through hole at least partially remains in an open state.

[0019] In order to achieve fluid communication between the raw water channel and the corresponding flow channel through the water diversion piece, preferably, when the raw water channel is connected with the corresponding flow channel through the water diversion piece, the push rod is retracted to drive the blocking piece as a whole below the plane where the first through hole is located, so that the first through hole and the second through hole are connected.

[0020] Preferably, an end cover is provided inside the shell for installing all filter materials at one end away from the water inlet, and a third through hole located in the flow channel is opened on the end cover. The above-mentioned pipeline is formed by extending from the outer peripheral wall of the third through hole on the end cover toward the direction away from the filter material, and the third through hole constitutes the above-mentioned second through hole.

[0021] The technical solution adopted by the utility model to solve the second technical problem is: a water purifier, characterized in that: the composite filter element as mentioned above is applied.

[0022] Compared with the prior art, the utility model has the following advantages: by arranging a water-dividing member, a driving mechanism and a blocking member, when the filter material at the most upstream end is severely clogged, the blocking member is driven by the driving mechanism to open and close the first through hole and / or the second through hole, so that the raw water channel is connected with the corresponding flow channel fluid through the water-dividing member, so that the raw water can intersect with the flow channel without passing through the filter material at the most upstream end, so as to realize the use of filter materials other than the filter material at the most upstream end, improve the utilization rate of the composite filter element, reduce waste, and greatly improve the service life of the composite filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the composite filter element in the embodiment of the utility model;

[0024] Figure 2 for Figure 1 A cross-sectional view of

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 for Figure 1 Exploded diagram of

[0027] Figure 5 It is a schematic diagram of the structure of the end cover in the embodiment of the utility model. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] like Figures 1 to 5 The figure shows a preferred embodiment of a composite filter element and a water purifier using the composite filter element of the utility model. The composite filter element comprises a housing 1, a filter assembly 2, a water distribution element 3, a driving mechanism 4 and a blocking element 5.

[0030] The shell 1 is hollow inside and is provided with a water inlet 1a and a water outlet 1b. In this embodiment, the shell 1 is a tube body closed at the top and bottom, and the water inlet 1a and the water outlet 1b are both provided at the same end of the shell 1 away from the water distribution member 3.

[0031] The filter assembly 2 is arranged inside the housing 1. The filter assembly 2 includes at least two filter materials arranged inside and outside in sequence. Along the flow path of the fluid, a raw water channel 10 is formed between the filter material located at the most upstream and the housing 1, and a flow channel 20 is formed between two adjacent filter materials. The filter assembly 2 is arranged to filter the raw water flowing into the raw water channel 10 from the water inlet 1a, and the purified water filtered by the filter assembly 2 flows out of the housing 1 through the water outlet 1b; Figure 2 As shown, there are two filter materials in this embodiment, which are respectively recorded as the first filter material 21a and the second filter material 21b; Figure 4 As shown, the first filter material 21a and the second filter material 21b are both roll-type membranes with a circular transverse cross section, and the second filter material 21b is located downstream of the first filter material 21a.

[0032] The water distribution member 3 is arranged inside the housing 1, and is provided with a first through hole 31 and a second through hole 32 penetrating the wall thickness thereof. The first through hole 31 is connected to the raw water channel 10, and the second through hole 32 is connected to at least one flow channel 20; the blocking member 5 is drivingly connected to the driving mechanism 4, and can open and close the first through hole 31 and / or the second through hole 32 under the drive of the driving mechanism 4, so that when the first through hole 31 and the second through hole 32 are connected, the raw water channel 10 is fluidically connected to the corresponding flow channel 20 through the water distribution member 3.

[0033] The water distribution member 3 is a pipe extending along the axial direction of the filter material, and one of the first through hole 31 and the second through hole 32 is opened at one end of the pipe, and the other is opened on the pipe wall of the pipe. Figure 2 and Figure 3 As shown, in this embodiment, the second through hole 32 is opened on one end of the pipe, and the blocking member 5 is used to open and close the second through hole 32; an end cover 7 is provided inside the shell for mounting all filter materials at one end away from the water inlet 1a, and a third through hole 71 located in the flow channel 20 is opened on the end cover 7. The above-mentioned pipe is extended from the outer peripheral wall of the third through hole 71 on the end cover 7 toward the direction away from the filter materials 21, 22, and the third through hole 71 constitutes the above-mentioned second through hole 32.

[0034] In this embodiment, the driving mechanism 4 includes a motor 41 and a push rod 42 connected to the motor 41. The push rod 42 is retracted along the axial direction of the pipeline. The push rod 42 can be driven by the motor 41 to move in a direction close to or away from the second through hole 32. The blocking member 5 is connected to the push rod 42, so that the blocking member 5 can close or open the second through hole 32 as the push rod 42 moves. The motor 41 can also be a push rod motor. Figure 3 As shown, the blocking member 5 is a disc-shaped blocking block sleeved on the top of the push rod 42, and the top of the blocking block can abut against the wall of the end cover where the second through hole 32 is located to close the second through hole 32. A sealing ring 6 is also sleeved on the outer periphery of the blocking block, and the outer peripheral wall of the sealing ring 6 forms a sealing connection with the inner peripheral wall of the pipeline.

[0035] The first through hole 31 is formed on the pipe wall of the pipe and is located on the extension path of the push rod 42. During the extension process of the push rod 42, the first through hole 31 is at least partially kept open. When the raw water channel 10 is in fluid communication with the corresponding flow channel 20 through the water diversion member 3, the push rod 42 retracts to drive the blocking member 5 to be lower than the plane where the first through hole 31 is located, so that the first through hole 31 and the second through hole 32 are connected.

[0036] The composite filter element in this embodiment is a composite filter element commonly used in water purifiers. The first filter material 21a is used to intercept large particles of impurities. The working process of the composite filter element in this embodiment is as follows:

[0037] When the first filter material 21a is not blocked or is slightly blocked, the driving mechanism 4 is controlled to operate, so that the motor 41 is extended to drive the top of the blocking block to abut against the wall of the end cover where the second through hole 32 is located to close the second through hole 32. At this time, the raw water flowing from the water inlet 1a into the raw water channel 10 has only one flow path: the raw water flowing from the water inlet 1a into the raw water channel 10 passes through the first filter material 21a and the second filter material 21b in sequence and flows out of the housing 1 from the water outlet 1b;

[0038] When the first filter material 21a is seriously blocked, the driving mechanism 4 is controlled to operate, so as to retract the motor 41 to drive the blocking member 5 to be lower than the plane where the first through hole 31 is located, so that the first through hole 31 and the second through hole 32 are connected, so that the raw water channel 10 is in fluid communication with the corresponding flow channel 20 through the water dividing member 3. At this time, the raw water flowing from the water inlet 1a into the raw water channel 10 has two flow paths:

[0039] The first flow path is: the raw water flowing into the raw water channel 10 from the water inlet 1a passes through the first filter material 21a and the second filter material 21b in sequence and then flows out of the housing 1 from the water outlet 1b;

[0040] The second flow path is: the raw water flowing into the raw water channel 10 from the water inlet 1a does not pass through the first filter material 21a, but directly enters the pipeline through the first through holes 31 in sequence, flows to the upstream of the second filter material 21b through the second through holes 32, and then intersects with the output end of the first filter material 21a in the first flow path and flows to the second filter material 21b, and finally flows out of the shell 1 from the water outlet 1b.

Claims

1. A composite filter element, comprising: The shell (1) is hollow inside and is provided with a water inlet (1a) and a water outlet (1b); A filter assembly (2) is arranged inside the housing (1), the filter assembly (2) comprising at least two filter materials (21, 22) arranged inside and outside each other in sequence, along the flow path of the fluid, a raw water channel (10) is formed between the filter material located most upstream and the housing (1), and a flow channel (20) is formed between two adjacent filter materials (21, 22), the filter assembly (2) is arranged to filter raw water flowing from the water inlet (1a) into the raw water channel (10), and the purified water filtered by the filter assembly (2) flows out of the housing (1) through the water outlet (1b); The invention is characterized in that it also includes: A water distribution member (3) is arranged inside the shell (1), and the water distribution member (3) is provided with a first through hole (31) and a second through hole (32) penetrating the wall thickness thereof, the first through hole (31) being connected to the raw water channel (10), and the second through hole (32) being connected to at least one flow channel (20); A driving mechanism (4); The blocking member (5) is connected to the driving mechanism (4) and can open and close the first through hole (31) and / or the second through hole (32) under the drive of the driving mechanism (4), so that when the first through hole (31) and the second through hole (32) are connected, the raw water channel (10) is in fluid communication with the corresponding flow channel (20) through the water distribution member (3).

2. The composite filter element according to claim 1, characterized in that: The water distribution element (3) is a pipe extending along the axial direction of the filter material (21, 22); one of the first through hole (31) and the second through hole (32) is opened at one end of the pipe, and the other is opened on the pipe wall of the pipe.

3. The composite filter element according to claim 2, characterized in that: The second through hole (32) is opened on one end of the pipeline, and the blocking member (5) is used to open and close the second through hole (32).

4. The composite filter element according to claim 3, characterized in that: The driving mechanism (4) comprises a motor (41) and a push rod (42) drivingly connected to the motor (41); the push rod (42) is retractable along the axial direction of the pipeline; the push rod (42) can be driven by the motor (41) to move in a direction close to or away from the second through hole (32); the blocking member (5) is drivingly connected to the push rod (42), so that the blocking member (5) can close or open the second through hole (32) as the push rod (42) moves.

5. The composite filter element according to claim 4, characterized in that: The blocking member (5) is a disc-shaped blocking block sleeved on the top of the push rod (42); the top of the blocking block can abut against the wall surface of the end cover where the second through hole (32) is located to close the second through hole (32).

6. The composite filter element according to claim 5, characterized in that: A sealing ring (6) is also sleeved on the outer circumference of the blocking block, and the outer circumferential wall of the sealing ring (6) forms a sealing connection with the inner circumferential wall of the pipeline.

7. The composite filter element according to claim 4, characterized in that: The first through hole (31) is opened on the wall of the pipe and is located on the telescopic path of the push rod (42); during the telescopic process of the push rod (42), the first through hole (31) at least partially remains in an open state.

8. The composite filter element according to claim 7, characterized in that: When the raw water channel (10) is in fluid communication with the corresponding flow channel (20) through the water distribution member (3), the push rod (42) is retracted to drive the blocking member (5) as a whole to be lower than the plane where the first through hole (31) is located, so that the first through hole (31) and the second through hole (32) are connected.

9. The composite filter element according to any one of claims 2 to 8, characterized in that: An end cover (7) is provided inside the shell for mounting all filter materials (21, 22) at one end away from the water inlet (1a), and a third through hole (71) located in the flow channel (20) is opened on the end cover (7). The end cover (7) extends from the outer peripheral wall of the third through hole (71) toward a direction away from the filter materials (21, 22) to form the above-mentioned pipeline, and the third through hole (71) constitutes the above-mentioned second through hole (32).

10. A water purifier, characterized in that: The composite filter element is applied as described in any one of claims 1 to 9.

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