Composite filter element

Abstract

The composite filter element structure comprises a transparent filter bottle and a rotating disc assembly, a transparent sleeve is arranged in the filter bottle, the inner space of the filter bottle is divided into a cylindrical inner cavity and an annular outer cavity which are concentrically arranged in a sleeved mode through the sleeve, a front filter element is arranged in the inner cavity, and an RO filter element is arranged in the outer cavity. The bottom of the sleeve is closed, and the top is provided with a sleeve cover; a groove is formed in the top of the filter bottle, and a tap water inlet, a front filter element water outlet, an RO filter element water inlet, a pure water outlet and a wastewater outlet are respectively formed in the groove; the turntable assembly is provided with waterway interfaces which respectively correspond to the tap water inlet, the front filter element water outlet, the RO filter element water inlet, the pure water outlet and the wastewater outlet; the turntable assembly is fixed in the groove, and when the turntable assembly rotates relative to the filter bottle, the waterway interfaces can be communicated / closed. The composite filter element structure is small in occupied space, simple in structure and easy to disassemble and assemble.

Description

Technical Field

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

[0002] With the continuous improvement of living standards, people's requirements for drinking water are also increasing, and household water purifiers have become a commonly used small appliance. At present, the number of filter cartridges in water purifiers on the market is basically 3-4, and each filter cartridge realizes different functions. However, due to the large number of filter cartridges, a large space is required, which increases the size of the water purifier; at the same time, each filter cartridge needs to be connected to the water circuit board of the water purifier, resulting in multiple water inlets and outlets of the filter cartridge, and multiple interfaces of the water circuit, which makes the production and assembly process complicated and increases the risk of water leakage in the water purifier. Utility Model Content

[0003] The utility model provides a composite filter element to solve the problems in the prior art that the filter element in the water purifier occupies a large space and the water channel interfaces are complicated to assemble and prone to water leakage.

[0004] A composite filter element, comprising a transparent filter bottle and a turntable assembly, wherein a transparent sleeve is arranged in the filter bottle, wherein the sleeve divides the inner space of the filter bottle into a concentric cylindrical inner cavity and an annular outer cavity, wherein the inner cavity is provided with a pre-filter element, and the outer cavity is provided with an RO filter element, wherein the sleeve is closed at the bottom and provided with a sleeve cover at the top;

[0005] The top of the filter bottle is provided with a groove, and the groove is respectively provided with a tap water inlet, a pre-filter element water outlet, an RO filter element water inlet, a pure water outlet and a waste water outlet;

[0006] The turntable assembly is provided with waterway interfaces corresponding to the tap water inlet, the pre-filter outlet, the RO filter inlet, the pure water outlet and the waste water outlet respectively;

[0007] The turntable assembly is fixed in the groove, and when the turntable assembly rotates relative to the filter bottle, the water channel interfaces can be connected / closed.

[0008] Preferably, the pre-filter element includes a pre-filter material arranged in the sleeve, a pre-filter material upper cover arranged on the top of the pre-filter material, and a pre-filter material lower cover arranged on the bottom of the pre-filter material; a certain gap is reserved between the outer periphery of the pre-filter material and the inner periphery of the sleeve to form a circular first water path, and the middle part of the pre-filter material is longitudinally penetrated to form a second water path; tap water enters the first water path through the tap water inlet, and after being filtered by the pre-filter material, flows out through the pre-filter element outlet along the second water path.

[0009] Preferably, the RO filter element comprises an RO membrane arranged in the filter bottle, a central tube sleeved in the RO membrane, a central tube upper cover arranged on the top of the central tube, and an RO membrane upper cover arranged on the top of the RO membrane; a certain gap is reserved between the outer circumference of the RO membrane and the inner circumference of the filter bottle to form an annular third waterway, a certain gap is reserved between the inner circumference of the central tube and the outer circumference of the sleeve to form an annular fourth waterway, a through water hole is provided on the side circumference of the central tube, and a fifth waterway is formed by sealing between the lower end surface of the RO membrane upper cover and the upper end surface of the RO membrane; water filtered by the pre-filter element enters the third waterway through the water inlet of the RO filter element, flows through the water hole after being filtered by the RO membrane, and flows out through the pure water outlet along the fourth waterway, and wastewater flows out through the wastewater outlet along the fifth waterway.

[0010] Preferably, a concentrically sleeved annular limit plate is provided on the inner top surface of the filter bottle, and the limit plate interference seals the pre-filter material cover, the sleeve cover, the center tube cover, and the RO membrane cover in sequence from the inside to the outside; the tap water inlet, the pre-filter element outlet, the RO filter element inlet, the pure water outlet and the waste water outlet are respectively distributed in the limit space formed by the limit plate.

[0011] Preferably, the turntable assembly comprises a turntable, a turntable cover, and a pressure ring; the turntable is fixedly connected to the turntable cover, and the turntable assembly is fixed in the groove by the pressure ring screw.

[0012] Preferably, a positioning column is provided on the lower end surface of the turntable, and a waist-shaped positioning groove is provided in the groove, and the positioning column cooperates with the positioning groove to realize the rotational positioning of the turntable assembly and the filter bottle.

[0013] Preferably, a filter bottle cover fixedly connected to the filter bottle is provided at the bottom of the filter bottle, and an end surface of the filter bottle cover is provided with an integrally formed handle.

[0014] Preferably, the pre-filter element comprises hollow cylindrical activated carbon and PP origami wrapped around the outer circumference of the activated carbon.

[0015] Preferably, the tap water inlet, the pre-filter outlet, the RO filter inlet, the pure water outlet and the waste water outlet are respectively provided with sealing rings.

[0016] Preferably, a hanging ear is provided on the outer periphery of the top of the filter bottle to position the composite filter element.

[0017] The utility model has the following beneficial effects:

[0018] (1) The composite filter element of the utility model realizes multiple filtrations while saving the space occupied by the composite filter element by sleeve-mounting the pre-filter element inside the RO filter element.

[0019] (2) The composite filter element of the utility model concentrates the water channel interfaces on the turntable assembly, and the turntable assembly rotates relative to the filter bottle to realize the connection / closure of the water channel interfaces. The structure is simple and easy to disassemble and assemble.

[0020] (3) The composite filter element of the present invention adopts a transparent filter bottle and a transparent sleeve, so that the user can directly see the filtering effect in the composite filter element, and the user can also be reminded to replace the composite filter element in time.

[0021] (4) The composite filter element of the utility model is provided with sealing rings at the tap water inlet, the pre-filter outlet, the RO filter inlet, the pure water outlet and the waste water outlet to prevent water from leaking into the water channel interfaces between the turntable assembly and the filter bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, in the drawings, the same parts are marked with the same reference numerals, and the drawings are not drawn according to the actual scale.

[0023] Figure 1 This is a structural diagram of a composite filter element according to a specific embodiment of the utility model;

[0024] Figure 2 This is a structural diagram of a turntable in a specific embodiment of the utility model;

[0025] Figure 3 This is a longitudinal cross-sectional structural diagram of a composite filter element according to a specific embodiment of the utility model;

[0026] Figure 4 This is a longitudinal cross-sectional structural diagram of a pre-filter element of a specific embodiment of the utility model;

[0027] Figure 5 It is a longitudinal cross-sectional structural diagram of the RO filter element according to a specific embodiment of the utility model.

[0028] Description of Figure Numbers

[0029] S-composite filter element;

[0030] 10- filter bottle;

[0031] 11- casing; 111- casing cover;

[0032] 12-pre-filter element; 121-pre-filter material; 122-pre-filter material upper cover; 123-pre-filter material lower cover; 124-first water channel; 125-second water channel;

[0033] 13-RO filter element; 131-RO membrane; 132-RO membrane cover; 133-center tube; 134-center tube cover; 135-third water channel; 136-fourth water channel; 137-fifth water channel; 1331-water hole;

[0034] 14-groove; 141-tap water inlet; 142-pre-filter outlet; 143-RO filter inlet; 144-pure water outlet; 145-waste water outlet; 146-positioning groove; 147-sealing ring;

[0035] 15-limiting plate;

[0036] 16- filter bottle cover; 161- handle;

[0037] 17- hanging ear;

[0038] 20-turntable assembly;

[0039] 21-turntable; 211-waterway interface; 212-positioning column;

[0040] 22-turntable cover;

[0041] 23-Pressure ring. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments disclosed in the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present utility model.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Specific embodiments

[0045] Please refer to Figure 1-Figure 5The present embodiment provides a composite filter element (S), comprising a transparent filter bottle (10) and a turntable assembly (20), wherein a transparent sleeve (11) is provided in the filter bottle (10), and the sleeve (11) divides the internal space of the filter bottle (10) into a cylindrical inner cavity and an annular outer cavity which are concentrically arranged, wherein the inner cavity is provided with a pre-filter element (12), and the outer cavity is provided with an RO filter element (13), and the sleeve (11) is closed at the bottom and provided with a sleeve cover (111) at the top; a groove (14) is provided at the top of the filter bottle (10), and a tap water inlet (141) is provided in the groove (14), and a pre-filter element (12) is provided in the pre-filter element (13). The rotary disk assembly (20) is provided with water channel interfaces (211) corresponding to the tap water inlet (141), the pre-filter water outlet (142), the RO filter water inlet (143), the pure water outlet (144) and the waste water outlet (145); the rotary disk assembly (20) is provided with water channel interfaces (211) corresponding to the tap water inlet (141), the pre-filter water outlet (142), the RO filter water inlet (143), the pure water outlet (144) and the waste water outlet (145) respectively; the rotary disk assembly (20) is fixed in the groove (14); when the rotary disk assembly (20) rotates relative to the filter bottle (10), the water channel interfaces (211) can be connected / closed.

[0046] In the present embodiment, by sleeve-arranging the pre-filter element (12) inside the RO filter element (13), the tap water enters the pre-filter element (12) along the water channel interface (211) for primary filtration, and then passes through the RO filter element (13) for secondary filtration. On the one hand, the multiple filtering effects of the composite filter element (S) are ensured, and on the other hand, the pre-filter element (12) does not need to occupy additional space, thus meeting the user's miniaturization requirements. Moreover, the filter bottle (10) and the sleeve (11) are both made of transparent visual materials, so that the user can directly see the filtering effect inside the composite filter element (S), and the user can also be reminded to replace the composite filter element (S) in time.

[0047] In a more preferred embodiment, the pre-filter element (12) comprises a pre-filter material (121) arranged in the sleeve (11), a pre-filter material upper cover (122) arranged on the top of the pre-filter material (121), and a pre-filter material lower cover (123) arranged on the bottom of the pre-filter material (121); a certain gap is reserved between the outer periphery of the pre-filter material (121) and the inner periphery of the sleeve (11) to form an annular first water path (124), and the middle of the pre-filter material (121) is longitudinally penetrated to form a second water path (125); tap water enters the first water path (124) through the tap water inlet (141), and after being filtered by the pre-filter material (121), flows out through the pre-filter element water outlet (142) along the second water path (125).

[0048] In a more preferred embodiment, the RO filter element (13) comprises an RO membrane (131) disposed in the filter bottle (10), a central tube (133) sleeved in the RO membrane (131), a central tube upper cover (134) disposed on the top of the central tube (133), and an RO membrane upper cover (132) disposed on the top of the RO membrane (131); a certain gap is reserved between the outer periphery of the RO membrane (131) and the inner periphery of the filter bottle (10) to form an annular third waterway (135), and a certain gap is reserved between the inner periphery of the central tube (133) and the outer periphery of the sleeve (11) to form an annular fourth waterway (136). A water passage (1331) is formed on the side of the central tube (133); a lower end surface of the RO membrane upper cover (132) and an upper end surface of the RO membrane (131) are sealed to form a fifth water passage (137); water filtered by the pre-filter element (12) enters the third water passage (135) through the RO filter element water inlet (143), flows through the water passage hole (1331) after being filtered by the RO membrane (131), flows out through the fourth water passage (136) through the pure water outlet (144), and waste water flows out through the fifth water passage (137) through the waste water outlet (145).

[0049] In a more preferred embodiment, the inner top surface of the filter bottle (10) is provided with a concentrically sleeved annular limiting plate (15), and the limiting plate (15) sequentially interference seals the pre-filter material cover (122), the sleeve cover (111), the center tube cover (134), and the RO membrane cover (132) from the inside to the outside; the tap water inlet (141), the pre-filter element water outlet (142), the RO filter element water inlet (143), the pure water outlet (144) and the waste water outlet (145) are respectively spaced apart in the limiting space formed by the limiting plate (15).

[0050] In a more preferred embodiment, the turntable assembly (20) includes a turntable (21), a turntable cover (22), and a pressure ring (23); the turntable (21) and the turntable cover (22) are fixedly connected, and the turntable assembly (20) is fixed in the groove (14) by screws through the pressure ring (23).

[0051] In a more preferred embodiment, a positioning column (212) is provided on the lower end surface of the turntable (21), and a waist-shaped positioning groove (146) is provided in the groove (14). The positioning column (212) and the positioning groove (146) cooperate to realize the rotational positioning of the turntable assembly (20) and the filter bottle (10). Specifically, the limiting column can be inserted into the limiting groove, so that the rotation angle of the turntable assembly (20) in the groove (14) can be limited. More specifically, the rotation angle of the turntable assembly (20) in the groove (14) is 0-90°. When the tap water inlet (141), the pre-filter outlet (142), the RO filter inlet (143), the pure water outlet (144) and the waste water outlet (145) are aligned with the water channel interface (211) one by one, the water channel is connected; when the tap water inlet (141), the pre-filter outlet (142), the RO filter inlet (143), the pure water outlet (144) and the waste water outlet (145) are staggered with the water channel interface (211), the water channel is closed. In this embodiment, each water channel interface (211) is concentrated on the turntable assembly (20), and the turntable assembly (20) rotates relative to the filter bottle (10) to realize the connection / closure of each water channel interface (211), and the structure is simple and easy to disassemble and assemble.

[0052] In a more preferred embodiment, a filter bottle cover (16) fixedly connected to the filter bottle (10) is provided at the bottom of the filter bottle (10), and an integrally formed handle (161) is provided on the end surface of the filter bottle cover (16). Specifically, the filter bottle cover (16) and the filter bottle (10) are welded as a whole, and the filter bottle (10) can be driven to rotate by rotating the handle (161), thereby realizing the connection / closure of each water channel interface (211) between the filter bottle (10) and the turntable assembly (20); and the filter bottle (10) can be taken out from the machine body by pulling the handle (161), and the operation is simple and convenient.

[0053] In a more preferred embodiment, the pre-filter (12) includes a hollow cylindrical activated carbon and a PP origami wrapped around the outer circumference of the activated carbon. After the tap water enters the pre-filter (12), it is filtered by the PP origami and the activated carbon in turn, and then enters the RO filter (13) for secondary filtration. Optionally, the inner wall of the activated carbon is also covered with a hollow cylindrical PP cotton to achieve triple filtration of the pre-filter (12) and ensure the primary filtration effect.

[0054] In a more preferred embodiment, the tap water inlet (141), the pre-filter outlet (142), the RO filter inlet (143), the pure water outlet (144) and the waste water outlet (145) are respectively provided with sealing rings (147) to prevent water from leaking into the water channel interfaces (211) between the turntable assembly (20) and the filter bottle (10).

[0055] In a more preferred embodiment, a hanging ear (17) is provided on the outer periphery of the top of the filter bottle (10) for positioning the composite filter element (S). Specifically, when the composite filter element (S) needs to be disassembled, the hanging ear (17) is screwed into the hanging ear (17) groove in the body, thereby fixing the composite filter element (S).

[0056] The above are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite filter element, characterized in that: The invention comprises a transparent filter bottle (10) and a turntable assembly (20), wherein a transparent sleeve (11) is arranged inside the filter bottle (10), and the sleeve (11) divides the internal space of the filter bottle (10) into a cylindrical inner cavity and an annular outer cavity which are arranged concentrically, wherein the inner cavity is provided with a pre-filter element (12), and the outer cavity is provided with an RO filter element (13), and the sleeve (11) is closed at the bottom and provided with a sleeve cover (111) at the top; The top of the filter bottle (10) is provided with a groove (14), and the groove (14) is respectively provided with a tap water inlet (141), a pre-filter element water outlet (142), an RO filter element water inlet (143), a pure water outlet (144) and a waste water outlet (145); The turntable assembly (20) is provided with waterway interfaces (211) corresponding to the tap water inlet (141), the pre-filter outlet (142), the RO filter inlet (143), the pure water outlet (144) and the waste water outlet (145). The turntable assembly (20) is fixed in the groove (14); when the turntable assembly (20) rotates relative to the filter bottle (10), the water channel interfaces (211) can be connected / closed.

2. The composite filter element according to claim 1, characterized in that: The pre-filter element (12) comprises a pre-filter material (121) arranged in the sleeve (11), a pre-filter material upper cover (122) arranged on the top of the pre-filter material (121), and a pre-filter material lower cover (123) arranged on the bottom of the pre-filter material (121); a certain gap is reserved between the outer periphery of the pre-filter material (121) and the inner periphery of the sleeve (11) to form an annular first water path (124), and the middle of the pre-filter material (121) is longitudinally penetrated to form a second water path (125); tap water enters the first water path (124) through the tap water inlet (141), and after being filtered by the pre-filter material (121), flows out along the second water path (125) through the pre-filter element water outlet (142).

3. The composite filter element according to claim 2, characterized in that: The RO filter element (13) comprises an RO membrane (131) arranged in the filter bottle (10), a central tube (133) sleeved in the RO membrane (131), a central tube upper cover (134) arranged on the top of the central tube (133), and an RO membrane upper cover (132) arranged on the top of the RO membrane (131); a certain gap is reserved between the outer periphery of the RO membrane (131) and the inner periphery of the filter bottle (10) to form an annular third waterway (135); a certain gap is reserved between the inner periphery of the central tube (133) and the outer periphery of the sleeve (11) to form an annular fourth waterway (136); The central tube (133) is provided with a through water hole (1331) on the side thereof; the lower end surface of the RO membrane upper cover (132) and the upper end surface of the RO membrane (131) are sealed to form a fifth water path (137); water filtered by the pre-filter element (12) enters the third water path (135) through the RO filter element water inlet (143), and after being filtered by the RO membrane (131), flows through the water hole (1331), flows out through the fourth water path (136) through the pure water outlet (144), and waste water flows out through the waste water outlet (145) along the fifth water path (137).

4. The composite filter element according to claim 3, characterized in that: The inner top surface of the filter bottle (10) is provided with a concentrically sleeved annular limiting plate (15), and the limiting plate (15) sequentially interference seals the pre-filter material upper cover (122), the sleeve cover (111), the center tube upper cover (134), and the RO membrane upper cover (132) from the inside to the outside; the tap water inlet (141), the pre-filter element water outlet (142), the RO filter element water inlet (143), the pure water outlet (144) and the waste water outlet (145) are respectively distributed in a limited space formed by the limiting plate (15).

5. The composite filter element according to claim 1, characterized in that: The turntable assembly (20) comprises a turntable (21), a turntable cover (22), and a pressure ring (23); the turntable (21) is fixedly connected to the turntable cover (22), and the turntable assembly (20) is screwed into the groove (14) via the pressure ring (23).

6. The composite filter element according to claim 5, characterized in that: The lower end surface of the turntable (21) is provided with a positioning column (212), and the groove (14) is provided with a waist-shaped positioning groove (146). The positioning column (212) and the positioning groove (146) cooperate to achieve rotational positioning of the turntable assembly (20) and the filter bottle (10).

7. The composite filter element according to claim 1, characterized in that: The bottom of the filter bottle (10) is provided with a filter bottle cover (16) fixedly connected to the filter bottle (10), and the end surface of the filter bottle cover (16) is provided with an integrally formed handle (161).

8. The composite filter element according to claim 1, characterized in that: The pre-filter element (12) comprises hollow cylindrical activated carbon and PP origami paper wrapped around the outer circumference of the activated carbon.

9. The composite filter element according to claim 1, characterized in that: The tap water inlet (141), the pre-filter outlet (142), the RO filter inlet (143), the pure water outlet (144) and the waste water outlet (145) are respectively provided with sealing rings (147).

10. The composite filter element according to claim 1, characterized in that: The top outer periphery of the filter bottle (10) is provided with a hanging ear (17) for positioning the composite filter element (S).

Images