Composite filter element and water purification system

Abstract

The composite filter element comprises a first filter unit and a second filter unit, a middle end cover is arranged between the first filter unit and the second filter unit, a trumpet-shaped water distribution cover is arranged in the center of the upper surface of the middle end cover, and the trumpet-shaped water distribution cover is arranged in the middle of the middle end cover. A water inlet communicated with the trumpet-shaped water distribution cover is formed in the center of the lower surface of the middle end cover, the water inlet is communicated with the hollow part of the first filtering unit, and arc-shaped water guide ribs are uniformly arranged on the upper surface of the middle end cover around the trumpet-shaped water distribution cover; a water retaining strip is arranged on one side, close to the arc-shaped water guide rib, of the edge of the upper surface of the middle end cover; the composite filter element is reasonable in design and simple in structure, and the first filter unit and the second filter unit are combined to integrate the composite filter element; therefore, the water purified by the first filtering unit to the maximum extent can completely flow through the second filtering unit, and the filtering efficiency is improved.

Description

Technical Field

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

[0002] As people pay more and more attention to the safety of drinking water, household water dispensers and water purifiers have gradually become essential household appliances for household drinking water, and the water purification filter is the most core component of the water purifier. According to different requirements for filtered water and differences in water quality in different regions, different types and numbers of filter elements can be set in the water purifier to meet users' needs for different drinking water.

[0003] With the development of water purification technology, the miniaturization and integration of water purification devices have become the main development trend. In the industry design, the multi-stage filter elements are integrated together to effectively reduce the size of the water purifier. In addition, the integrated design can reduce the number of filter elements to be replaced in the water purification device and improve the convenience of maintenance.

[0004] For example, the water purification device in the prior art can install two or more filter elements in the same filter bottle, so as to achieve integration and miniaturization. Specifically, one filter element can be sleeved on another filter element, and the two filter elements are completely separated by an isolation sleeve, and then connected together through a flow channel opened inside the filter bottle or through a pipeline at the port of the filter bottle;

[0005] In the above filter element assembly method, the filter elements in the filter bottle are generally independent, but are nested or arranged in parallel in one filter bottle, and are separated from each other by components such as isolation sleeves. Although this has achieved a certain degree of miniaturization and integration, with the continuous development of technology and the increasing requirements of users for miniaturization and integration, the size of the integrated multi-stage filter element still needs to be continuously reduced. Utility Model Content

[0006] The purpose of the utility model is to provide a composite filter element and a water purification system to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a composite filter element, comprising: a first filter unit and a second filter unit, a middle end cover is provided between the first filter unit and the second filter unit, and an upper end cover is fixedly installed on the top of the second filter unit;

[0008] The first filter unit is a hollow tubular filter element, a trumpet-shaped water distribution cover is provided at the center of the upper surface of the middle end cover, a water inlet that is connected to the trumpet-shaped water distribution cover is opened at the center of the lower surface of the middle end cover, the water inlet is connected to the hollow part of the first filter unit, arc-shaped water guide ribs are evenly provided on the upper surface of the middle end cover around the trumpet-shaped water distribution cover, and a water retaining strip is provided on one side of the edge of the upper surface of the middle end cover close to the arc-shaped water guide ribs.

[0009] Wherein, a lower end cover is fixedly mounted on one end of the first filter unit away from the second filter unit, and the lower end cover seals the end of the first filter unit.

[0010] Wherein, a round hole is penetrated and opened on one side of the surface of the trumpet-shaped water distribution cover.

[0011] Wherein, the second filter unit includes an outer cylinder and a filter material located inside the outer cylinder.

[0012] Among them, a clean water outlet is provided at the center of the upper end cover, and the lower surface of the upper end cover is evenly provided with guide water distribution ribs, and a water guide cavity is formed between two adjacent guide water distribution ribs, and the water guide cavity is connected with the clean water outlet.

[0013] A water purification system comprises the composite filter element mentioned above.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model has reasonable design and simple structure. It integrates a composite filter element by combining a first filter unit and a second filter unit. When the composite filter element filters water, water flows from the first filter unit, and is filtered from the outside to the inside. Then, it is gathered from the hollow part of the first filter unit and flows to the water inlet of the middle end cover. After the water flows encounter the trumpet-shaped water distribution cover on the upper surface of the middle end cover, it is diverted and dispersed to the surroundings, and flows through the arc-shaped water guide ribs and water retaining bars. The water forms a vortex, stirs the water, and distributes the water more evenly. The water flows through the arc-shaped water guide ribs and the water retaining bars and is evenly distributed to the second filter unit to ensure that the water purified by the first filter unit to the greatest extent can all flow through the second filter unit to improve the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall axonometric structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the water flow of the utility model;

[0019] Figure 4 This is a schematic diagram of the axonometric structure of the end cover in the first direction of the utility model;

[0020] Figure 5 This is a schematic diagram of the axonometric structure of the end cover in the second direction of the utility model;

[0021] Figure 6 This is a schematic diagram of the vortex water discharge of water flowing through the middle end cover of the utility model;

[0022] Figure 7 This is a schematic diagram of the axonometric structure of the upper end cover of the utility model in the first direction;

[0023] Figure 8 It is a schematic diagram of the axonometric structure of the upper end cover of the utility model in the second direction.

[0024] In the figure: 1. lower end cover; 2. first filter unit; 3. middle end cover; 31. water inlet; 32. trumpet-shaped water distribution cover; 33. circular hole; 34. arc-shaped water guide rib; 35. water retaining bar; 4. second filter unit; 41. outer cylinder; 42. filter material; 5. upper end cover; 51. purified water outlet; 52. water guide rib. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] See also Figure 1-8 The utility model provides a technical solution: a composite filter element, comprising: a first filter unit 2 and a second filter unit 4, a middle end cover 3 is provided between the first filter unit 2 and the second filter unit 4, and an upper end cover 5 is fixedly installed on the top of the second filter unit 4;

[0028] The first filter unit 2 is a hollow tubular filter element, and a lower end cap 1 is fixedly mounted on one end of the first filter unit 2 away from the second filter unit 4, and the lower end cap 1 closes the end of the first filter unit 2;

[0029] Wherein, the first filter unit 2 is one or more of activated carbon rods, activated carbon fibers and PP cotton.

[0030] A trumpet-shaped water distribution cover 32 is provided at the center of the upper surface of the middle end cover 3, and a water inlet 31 intersecting the trumpet-shaped water distribution cover 32 is provided at the center of the lower surface of the middle end cover 3. The water inlet 31 is connected to the hollow part of the first filter unit 2. Water flows from the outside to the inside into the hollow part of the first filter unit 2, and then flows to the trumpet-shaped water distribution cover 32 through the water inlet 31, and then flows out through the water openings distributed along the circumference on the surface of the trumpet-shaped water distribution cover 32, and the water is diverted to diffuse around.

[0031] The trumpet-shaped water distribution cover 32 is a cylindrical structure, and the cylindrical trumpet-shaped water distribution cover 32 has water openings evenly distributed along the circumferential direction;

[0032] Among them, the upper surface of the middle end cover 3 is evenly provided with arc-shaped water-guiding ribs 34 around the trumpet-shaped water-distributing cover 32, and a water retaining bar 35 is provided on the side of the upper edge of the middle end cover 3 close to the arc-shaped water-guiding ribs 34. After the water flow encounters the trumpet-shaped water-distributing cover 32 on the upper surface of the middle end cover 3, it is diverted and dispersed to the surroundings, flows through the arc-shaped water-guiding ribs 34 and the water retaining bar 35, and the water forms a vortex, stirs the water, and distributes the water more evenly;

[0033] The height of the water retaining strip 35 is lower than the height of the arc-shaped water guiding rib 34 .

[0034] A circular hole 33 is formed on one side of the surface of the trumpet-shaped water distribution cover 32. The diameter of the circular hole 33 is 2-5 mm, which ensures that the incoming water diffuses from the trumpet-shaped water distribution cover 32 to the surroundings while the center can also flow water to avoid water blockage in the center.

[0035] The second filter unit 4 includes an outer cylinder 41 and a filter material 42 located inside the outer cylinder 41;

[0036] The filter material 42 is one or more of anti-scaling particles, granular activated carbon, ion exchange resin and antibacterial particles, and the outer tube 41 is made of a water-impermeable material, which is one of ABS, PP and PC.

[0037] Among them, a clean water outlet 51 is provided at the center of the upper end cover 5, and diversion and water distribution ribs 52 are evenly provided on the lower surface of the upper end cover 5. A water guide cavity is formed between two adjacent diversion and water distribution ribs 52, and the water guide cavity is connected with the clean water outlet 51.

[0038] Example 2

[0039] Based on Example 1, the present application also includes a water purification system, which includes the composite filter element of Example 1 above.

[0040] Working principle: when in use, the first filter unit 2 and the second filter unit 4 are combined to form an integrated composite filter element; when the composite filter element filters water, the water flows from the first filter unit 2, and is filtered from the outside to the inside, and then converges from the hollow part of the first filter unit 2 to the water inlet 31 of the middle end cover 3. After the water flows encounter the trumpet-shaped water distribution cover 32 on the upper surface of the middle end cover 3, it is diverted and dispersed to the surroundings, and flows through the arc-shaped water-guiding ribs 34 and the water retaining bars 35. The water forms a vortex, stirs the water, and distributes the water more evenly; the water flows through the arc-shaped water-guiding ribs 34 and the water retaining bars 35 and is evenly distributed to the filter material 42 of the second filter unit 4, so as to ensure that the water purified by the first filter unit 2 to the greatest extent can all flow through the filter material 42 of the second unit 4, so as to improve the filtering efficiency; the water filtered by the second filter unit 4 passes through the guide water distribution ribs 52 of the upper end cover 5 and then converges and flows out from the clean water outlet 51.

[0041] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

Claims

1. A composite filter element, characterized in that: include: A first filter unit (2) and a second filter unit (4), wherein a middle end cover (3) is provided between the first filter unit (2) and the second filter unit (4), and an upper end cover (5) is fixedly mounted on the top of the second filter unit (4); The first filter unit (2) is a hollow tubular filter element; a trumpet-shaped water distribution cover (32) is provided at the center of the upper surface of the middle end cover (3); a water inlet (31) which is in communication with the trumpet-shaped water distribution cover (32) is provided at the center of the lower surface of the middle end cover (3); the water inlet (31) is in communication with the hollow part of the first filter unit (2); arc-shaped water guide ribs (34) are evenly provided on the upper surface of the middle end cover (3) around the trumpet-shaped water distribution cover (32); and a water retaining strip (35) is provided on one side of the upper surface edge of the middle end cover (3) close to the arc-shaped water guide rib (34).

2. A composite filter element according to claim 1, characterized in that: A lower end cover (1) is fixedly mounted on one end of the first filter unit (2) away from the second filter unit (4), and the lower end cover (1) closes the end of the first filter unit (2).

3. A composite filter element according to claim 1, characterized in that: A circular hole (33) is formed through one side of the surface of the trumpet-shaped water distribution cover (32).

4. A composite filter element according to claim 1, characterized in that: The second filter unit (4) comprises an outer cylinder (41) and a filter material (42) located inside the outer cylinder (41).

5. A composite filter element according to claim 1, characterized in that: A clean water outlet (51) is provided at the center of the upper end cover (5), and flow-guiding water distribution ribs (52) are evenly provided on the lower surface of the upper end cover (5), and a water-guiding cavity is formed between two adjacent flow-guiding water distribution ribs (52), and the water-guiding cavity is connected to the clean water outlet (51).

6. A water purification system, characterized in that: The water purification system comprises the composite filter element as described in any one of claims 1 to 5.

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