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 sleeved inside and outside, a raw water channel is formed between the filtering material located at the most upstream and the shell, and a flow channel is formed between every two adjacent filtering materials; the water distribution piece is provided with a water distribution hole communicated with the raw water channel, and the interior of the water distribution piece is communicated with at least one flow channel; the blocking assembly is located in the water distribution piece, and when the pressure difference between the raw water channel and the flow channel is smaller than or equal to a preset value, the blocking assembly blocks the water distribution hole, so that the raw water channel and the water distribution piece are in a blocked state; on the contrary, the plugging assembly opens the water diversion hole under the pressure effect, so that the raw water channel is communicated with the corresponding flow channel fluid through the water diversion piece. The composite filter element has the advantages that the water flow path can be automatically and dynamically adjusted according to the blockage condition of the most upstream filter material.

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 using 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, the water dividing member is provided with a water dividing hole penetrating through the wall thickness, the water dividing hole is connected with the raw water channel, and the interior of the water dividing member is connected with at least one flow channel;

[0011] The plugging component is located inside the water diversion component, and when the pressure difference between the raw water channel and the flow channel is less than or equal to a preset value, the plugging component blocks the water diversion hole, so that the raw water channel and the water diversion component are in a blocked state; and when the pressure difference between the raw water channel and the flow channel is greater than the preset value, the plugging component opens the water diversion hole under the action of pressure, so that the raw water channel is connected with the corresponding flow channel fluid through the water diversion component.

[0012] Preferably, an end cap is provided inside the shell for installing all filter materials at one end away from the water inlet, and a through hole located in the flow channel is opened on the end cap. A pipeline is extended from the outer peripheral wall of the through hole on the end cap toward the direction away from the filter material, and the pipeline constitutes the above-mentioned water diversion component. The interior of the water diversion component is connected with the flow channel through the above-mentioned through hole, and the water diversion hole is opened on the other end of the above-mentioned pipeline.

[0013] In order to achieve stable installation of the filter material, the end cover includes a plurality of annular walls arranged in sequence inside and outside, and two adjacent annular walls are connected by a bottom wall. Each filter material is correspondingly arranged between two adjacent annular walls and one end thereof is against the bottom wall.

[0014] Preferably, the two adjacent annular walls are respectively recorded as an outer annular wall and an inner annular wall, the filter material is arranged close to the outer annular wall, and a gap is left between the filter material and the inner annular wall, and the gap forms the above-mentioned flow channel, and the through hole is opened on the bottom wall where the filter material is located and is located between the filter material and the inner annular wall.

[0015] In order to increase the water flow rate, preferably, there are at least two through holes, which are circumferentially spaced on at least one bottom wall. A pipe is formed on the end cover extending from the outer wall of each through hole in a direction away from the filter material, and a corresponding sealing component is provided in each pipe.

[0016] In order to realize the automatic movement of the plugging component, preferably, the plugging component includes a plugging member and an elastic member both constrained in the pipeline, and when the pressure difference between the raw water channel and the flow channel is less than or equal to a preset value, the plugging member is blocked in the water diversion hole; when the pressure difference between the raw water channel and the flow channel is greater than a preset value, the plugging member is separated from the water diversion hole under the action of pressure; and the elastic member acts on the plugging member so that the plugging member always has a tendency to move toward the water diversion hole. In this way, the position of the plugging member can be dynamically adjusted by using the pressure difference between the raw water channel and the flow channel.

[0017] In order to improve the sealing performance of the plugging piece, the inner wall of the pipeline adjacent to the water diversion hole is tapered with a gradually decreasing diameter, and the head of the plugging piece is a tapered portion adapted to the tapered inner wall of the pipeline.

[0018] In order to achieve installation stability of the elastic member, the tail of the blocking member has a step portion, and a plug-in portion is also provided in the pipe. The elastic member is a spring, and the first end of the spring is sleeved on the step portion, and the second end of the spring is sleeved on the plug-in portion.

[0019] Preferably, the water inlet and the water outlet are both opened at an end of the shell away from the water dividing member.

[0020] The technical solution adopted by the utility model to solve the second technical problem is: a water purifier, characterized in that: the above-mentioned composite filter element is applied.

[0021] Compared with the prior art, the utility model has the following advantages: by arranging a water-dividing piece in the shell and a plugging assembly in the water-dividing piece, when the filter material at the most upstream is seriously clogged, the plugging assembly opens the water-dividing hole under the action of pressure, so that the raw water channel is connected with the corresponding flow channel fluid through the water-dividing piece, so that the raw water can intersect with the flow channel without passing through the filter material at the most upstream, so as to realize the use of filter materials other than the filter material at the most upstream, improve the utilization rate of the composite filter element, and reduce waste; and the composite filter element can automatically and dynamically adjust the path of the water flow according to the blockage of the filter material at the most upstream, without human intervention, thereby greatly improving the service life of the composite filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the composite filter element in the embodiment of the utility model;

[0023] Figure 2 for Figure 1 A cross-sectional view of

[0024] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0025] Figure 4 for Figure 1 Exploded diagram of

[0026] Figure 5 It is a schematic diagram of the structure of the end cover in the embodiment of the utility model. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] like Figures 1 to 5The 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 component 3 and a plugging assembly 4.

[0029] 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.

[0030] 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.

[0031] The water dividing member 3 is arranged inside the shell 1, and is provided with a water dividing hole 31 penetrating the wall thickness thereof, the water dividing hole 31 is communicated with the raw water channel 10, and the interior of the water dividing member 3 is communicated with at least one flow channel 20; the blocking component 4 is located inside the water dividing member 3, and when the pressure difference between the raw water channel 10 and the flow channel 20 is less than or equal to a preset value, the blocking component 4 blocks the water dividing hole 31, so that the raw water channel 10 and the water dividing member 3 are in a blocked state; and when the pressure difference between the raw water channel 10 and the flow channel 20 is greater than a preset value, the blocking component 4 opens the water dividing hole 31 under the action of pressure, so that the raw water channel 10 is in fluid communication with the corresponding flow channel 20 through the water dividing member 3.

[0032] like Figure 3 As shown, in this embodiment, the blocking component 4 includes a blocking member 41 and an elastic member 42 both constrained in the pipeline, and when the pressure difference between the raw water channel 10 and the flow channel 20 is less than or equal to a preset value, the blocking member 41 is blocked in the water diversion hole 31; when the pressure difference between the raw water channel 10 and the flow channel 20 is greater than the preset value, the blocking member 41 is separated from the water diversion hole 31 under the action of pressure; and the elastic member 42 acts on the blocking member 41 so that the blocking member 41 always has a tendency to move toward the water diversion hole 31.

[0033] like Figure 3As shown, the shell 1 is provided with an end cap 5 for installing all filter materials at one end away from the water inlet 1a. The end cap 5 is provided with a through hole 51 located in the flow channel 20. The end cap 5 extends from the outer peripheral wall of the through hole 51 toward the direction away from the filter materials to form a pipeline. The pipeline constitutes the above-mentioned water distribution component 3. The interior of the water distribution component 3 is connected to the flow channel 20 through the above-mentioned through hole 51. The water distribution hole 31 is provided on the other end of the above-mentioned pipeline. In addition, the end cap 5 includes a plurality of annular walls arranged in sequence inside and outside, and two adjacent annular walls are connected by a bottom wall 54. Each filter material is correspondingly arranged between two adjacent annular walls and one end thereof abuts against the bottom wall 54. As shown Figure 2 As shown, in this embodiment, there are two annular walls, namely an outer annular wall 52 and an inner annular wall 53. The first filter material 21a is arranged close to the outer annular wall 52. A gap 60 is left between the first filter material 21a and the inner annular wall 53. The gap 60 forms the above-mentioned flow channel 20. The through hole 51 is opened on the bottom wall 54 where the first filter material 21a is located and is located between the first filter material 21a and the inner annular wall 53.

[0034] In order to increase the water flow rate, there are at least two through holes 51, which are circumferentially spaced on at least one bottom wall 54. The end cover 5 has a pipeline extending from the outer peripheral wall of each through hole 51 in a direction away from the filter material, and each pipeline is provided with a corresponding plugging component 4. Figure 5 As shown, there are two through holes 51 in this embodiment.

[0035] The inner wall of the pipeline adjacent to the water diversion hole 31 is tapered with a gradually decreasing diameter, and the head of the plugging member 41 is a tapered portion 411 adapted to the tapered inner wall of the pipeline. This can improve the plugging effect of the plugging member 41 and improve the sealing performance. In addition, the tail of the plugging member 41 has a step portion 412, and a plug-in portion 55 is also provided in the pipeline. The elastic member 42 is a spring, and the first end of the spring is sleeved on the step portion 412, and the second end of the spring is sleeved on the plug-in portion 55.

[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 slightly blocked, the pressure difference between the raw water channel 10 and the flow channel 20 is very small (less than or equal to the preset value), so the blocking member 41 is blocked in the water diversion hole 31 under the action of the elastic member 42. At this time, 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 flows out of the housing 1 from the water outlet 1b.

[0038] When the first filter material 21a is seriously clogged, the booster pump behind the pre-filter in the water purifier will generate a large suction force, and the pressure difference cannot be quickly eliminated by relying solely on the outer filter. Therefore, the pressure difference between the raw water channel 10 and the flow channel 20 is large (greater than the preset value), so the blocking member 41 is pushed away from the water diversion hole 31 under the action of the pressure difference, so that the blocking member 41 is separated from the water diversion hole 31; 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 shell 1 from the water outlet 1b; 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 water diversion holes 31 in sequence, flows to the upstream of the second filter material 21b through the through hole 51, 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: A water distribution member (3) is arranged inside the shell (1), the water distribution member (3) is provided with a water distribution hole (31) penetrating the wall thickness thereof, the water distribution hole (31) is connected to the raw water channel (10), and the interior of the water distribution member (3) is connected to at least one flow channel (20); The plugging component (4) is located inside the water distribution member (3), and when the pressure difference between the raw water channel (10) and the flow channel (20) is less than or equal to a preset value, the plugging component (4) plugs the water distribution hole (31), so that the raw water channel (10) and the water distribution member (3) are in a blocked state; and when the pressure difference between the raw water channel (10) and the flow channel (20) is greater than the preset value, the plugging component (4) opens the water distribution hole (31) under the action of pressure, so that 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: An end cap (5) is provided inside the housing (1) for mounting all filter materials (21, 22) at one end away from the water inlet (1a); a through hole (51) located in the flow channel (20) is provided on the end cap (5); a pipe is extended from the outer peripheral wall of the through hole (51) on the end cap (5) in a direction away from the filter materials (21, 22); the pipe constitutes the water distribution element (3); the interior of the water distribution element (3) is connected to the flow channel (20) through the through hole (51); and the water distribution hole (31) is provided on the other end of the pipe.

3. The composite filter element according to claim 2, characterized in that: The end cover (5) comprises a plurality of annular walls (52, 53) arranged in sequence inside and outside with intervals, two adjacent annular walls (52, 53) are connected via a bottom wall (54), and each filter material (21, 22) is correspondingly arranged between two adjacent annular walls (52, 53) and one end thereof abuts against the bottom wall (54).

4. The composite filter element according to claim 3, characterized in that: The two adjacent annular walls are respectively recorded as an outer annular wall (52) and an inner annular wall (53); the filter material (21, 22) is arranged close to the outer annular wall (52); a gap (60) is left between the filter material (21, 22) and the inner annular wall (53); the gap (60) forms the above-mentioned flow channel (20); the through hole (51) is opened on the bottom wall where the filter material (21, 22) is located and is located between the filter material (21, 22) and the inner annular wall (53).

5. The composite filter element according to claim 4, characterized in that: There are at least two through holes (51) which are circumferentially spaced apart on at least one bottom wall (54); a pipeline is formed on the end cover (5) extending from the outer peripheral wall of each through hole (51) in a direction away from the filter material (21, 22), and a corresponding blocking component (4) is provided in each pipeline.

6. The composite filter element according to any one of claims 2 to 5, characterized in that: The blocking component (4) comprises a blocking member (41) and an elastic member (42) both of which are constrained in the pipeline, and when the pressure difference between the raw water channel (10) and the flow channel (20) is less than or equal to a preset value, the blocking member (41) is blocked in the water diversion hole (31); when the pressure difference between the raw water channel (10) and the flow channel (20) is greater than the preset value, the blocking member (41) is separated from the water diversion hole (31) under the action of pressure; and the elastic member (42) acts on the blocking member (41) so that the blocking member (41) always has a tendency to move toward the water diversion hole (31).

7. The composite filter element according to claim 6, characterized in that: The inner wall of the pipe adjacent to the water diversion hole (31) is in a tapered shape with a gradually decreasing diameter, and the head of the blocking member (41) is a tapered portion (411) adapted to the tapered inner wall of the pipe.

8. The composite filter element according to claim 7, characterized in that: The tail of the blocking member (41) has a step portion (412), and a plug-in portion (55) is also provided in the pipe. The elastic member (42) is a spring, and the first end of the spring is sleeved on the step portion (412), and the second end of the spring is sleeved on the plug-in portion (55).

9. The composite filter element according to any one of claims 1 to 5, characterized in that: The water inlet (1a) and the water outlet (1b) are both disposed on an end of the housing (1) away from the water distribution member (3).

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

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