Single-pass filter device

Abstract

The utility model discloses a single-pass filter device. The filter comprises an outer filter assembly and an inner filter assembly arranged in the outer filter assembly, the outer filter assembly comprises an outer filter element, an outer upper cover and an outer lower cover, the outer lower cover is used for blocking the bottom of the outer filter element, the outer upper cover comprises an inner pipe and an outer pipe, the top of the inner pipe is connected with the top of the outer pipe, a connecting pipe is arranged at the connecting position, and the outer pipe is connected with the outer pipe. An external thread is arranged on the outer side wall of the connecting pipe; the inner filter assembly comprises an inner filter element, an inner upper cover and an inner lower cover, the inner upper cover is arranged in the inner pipe, and a plurality of sealing rings are arranged between the inner upper cover and the inner pipe; the outer filter assembly further comprises a top cover, internal threads matched with the external threads are arranged on the inner side wall of the top cover, a through hole is formed in the center of the top cover, a limiting sleeve extending downwards is arranged at the edge of the through hole and matched with the inner upper cover, and the top cover is in threaded connection with the outer upper cover, so that the inner filter assembly in the outer filter assembly is convenient to disassemble and assemble; the device has the characteristics of ingenious structure, convenience and practicability.

Description

Technical Field

[0001] The utility model relates to a filtering device, in particular to a sleeve-type single-pass filtering device for purifying water. Background Art

[0002] Currently, there are some filtering devices in which an outer filter element and an inner filter element are nested together. The outer filter element and the inner filter element need to be disassembled and assembled during maintenance, which requires that the outer filter element and the inner filter element be easy to disassemble and assemble. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a single-pass filtering device, which can effectively solve the problem of convenient disassembly and assembly of the outer filter element and the inner filter element of the sleeve-type design. A downward-extending limit sleeve is provided at the edge of the through hole, and the limit sleeve cooperates with the inner upper cover and is threadedly connected to the outer upper cover through the top cover, so as to facilitate the disassembly and assembly of the inner filter assembly in the outer filter assembly, and has the characteristics of ingenious structure, convenience and practicality.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a single-pass filtering device, comprising an outer filter assembly and an inner filter assembly arranged inside the outer filter assembly, characterized in that: the outer filter assembly comprises a tubular outer filter element, an outer upper cover arranged on the top of the outer filter element, and an outer lower cover arranged on the bottom of the outer filter element, the outer lower cover is used to seal the bottom of the outer filter element, the outer upper cover comprises an inner tube and an outer tube, the tops of the inner tube and the outer tube are connected, the top surface of the connection is provided with a connecting pipe extending upward, and the outer side wall of the connecting pipe is provided with an external thread;

[0005] The inner filter assembly includes a tubular inner filter element, an inner upper cover provided on the top of the inner filter element, and an inner lower cover provided on the bottom of the inner filter element. The inner upper cover is provided in the inner tube, and a plurality of sealing rings are provided between the inner upper cover and the inner tube.

[0006] The outer filter assembly also includes a top cover, the inner side wall of the top cover is provided with an internal thread that matches the external thread, a through hole is provided at the center of the top cover, and a downwardly extending limit sleeve is provided at the edge of the through hole, and the limit sleeve matches the inner upper cover.

[0007] Furthermore, the inner tube is in a tapered shape that is larger at the top and smaller at the bottom.

[0008] Furthermore, a plurality of sealing grooves for accommodating the sealing rings are provided on the outer side wall of the inner upper cover.

[0009] Furthermore, a positioning column extending upward is provided at the center of the outer lower cover.

[0010] Furthermore, the inner lower cover is provided with a positioning tube that matches the positioning column, and the top of the positioning tube is closed.

[0011] Furthermore, the inner diameter of the connecting tube is larger than the outer diameter of the inner tube and smaller than the inner diameter of the outer tube.

[0012] Furthermore, the outer diameter of the limiting sleeve is smaller than the inner diameter of the inner tube, and the inner diameter is smaller than the outer diameter of the inner upper cover.

[0013] The utility model adopts the above-mentioned technical solution, overcomes the shortcomings of the background technology, and provides a single-pass filtering device, which can effectively solve the problem of convenient disassembly and assembly of the outer filter element and the inner filter element of the sleeve design. A downward extending limit sleeve is provided at the edge of the through hole, and the limit sleeve cooperates with the inner upper cover and is threadedly connected to the outer upper cover through the top cover, so as to facilitate the disassembly and assembly of the inner filter assembly in the outer filter assembly, and has the characteristics of ingenious structure, convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attachment Figure 1 It is a structural diagram of the present utility model.

[0015] Attachment Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0016] Attachment Figure 3 This is a schematic diagram of the split structure of the utility model.

[0017] In the figure: outer filter assembly 1, outer filter element 101, outer upper cover 102, outer lower cover 103, inner tube 104, outer tube 105, connecting tube 106, external thread 107, top cover 108, internal thread 109, through hole 1010, limiting sleeve 1011, positioning column 1012, inner filter assembly 2, inner filter element 201, inner upper cover 202, inner lower cover 203, sealing groove 204, positioning tube 205, water outlet joint 206, sealing ring 3. DETAILED DESCRIPTION

[0018] The following descriptions of the embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. Directional terms used herein, such as up, down, front, back, left, right, inside, outside, and side, are used solely with reference to the accompanying drawings. Therefore, these directional terms are intended to illustrate and facilitate understanding of the present invention and are not intended to limit the present invention. In the drawings, similar structural elements are denoted by the same reference numerals.

[0019] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings to make the technical solutions and beneficial effects of the present invention clearer and more specific.

[0020] See attached Figures 1 to 3The utility model includes an outer filter assembly 1 and an inner filter assembly 2 arranged inside the outer filter assembly 1, characterized in that: the outer filter assembly 1 includes a tubular outer filter element 101, an outer upper cover 102 arranged on the top of the outer filter element 101, and an outer lower cover 103 arranged at the bottom of the outer filter element 101, the outer upper cover 102 includes an inner tube 104 and an outer tube 105, the tops of the inner tube 104 and the outer tube 105 are connected, and the top surface of the connection is provided with a connecting pipe 106 extending upward, and the outer side wall of the connecting pipe 106 is provided with an external thread 107;

[0021] The inner filter assembly 2 includes a tubular inner filter element 201, an inner upper cover 202 provided on the top of the inner filter element 201, and an inner lower cover 203 provided on the bottom of the inner filter element 201. The inner upper cover 202 is provided in the inner tube 104, and a plurality of sealing rings 3 are provided between the inner upper cover 202 and the inner tube 104.

[0022] The outer filter assembly 1 also includes a top cover 108, the inner side wall of the top cover 108 is provided with an internal thread 109 that cooperates with the external thread 107, a through hole 1010 is provided at the center of the top cover 108, and a downwardly extending limit sleeve 1011 is provided at the edge of the through hole 1010, and the limit sleeve 1011 cooperates with the inner upper cover 202.

[0023] Furthermore, the inner tube 104 is in a tapered shape that is larger at the top and smaller at the bottom.

[0024] Furthermore, a plurality of sealing grooves 204 for accommodating the sealing rings 3 are provided on the outer side wall of the inner upper cover 202 .

[0025] Furthermore, a positioning column 1012 extending upward is provided at the center of the outer lower cover 103 .

[0026] Furthermore, a positioning tube 205 that cooperates with the positioning column 1012 is provided on the inner lower cover 203 , and the top of the positioning tube 205 is closed.

[0027] Furthermore, the inner diameter of the connecting tube 106 is larger than the outer diameter of the inner tube 104 and smaller than the inner diameter of the outer tube 105 .

[0028] Furthermore, the outer diameter of the limiting sleeve 1011 is smaller than the inner diameter of the inner tube 104 , and the inner diameter is smaller than the outer diameter of the inner upper cover 202 .

[0029] During installation, insert the inner filter assembly 2 from the outer cover 102 into the outer filter element 101. Insert the positioning tube 205 onto the positioning post 1012. Position the inner cover 202 within the inner tube 104. Screw the top cover 108 onto the connecting tube 106. The stopper 1011 presses the inner cover 202 downward, and the sealing ring 3 seals the gap between the inner cover 202 and the inner tube 104. Because the inner tube 104 is tapered, the further the stopper 1011 presses the inner cover 202 downward, the better the sealing effect of the sealing ring 3. The water to be filtered enters the outer filter element 101 from outside, undergoes a primary filtration on the outer filter element 101, and then undergoes a secondary filtration on the inner filter element 201. The resulting clean water flows out of the water outlet connector 206.

[0030] During disassembly, the inner filter assembly 2 can be directly taken out by simply unscrewing the top cover 108. Generally speaking, the outer filter element 101 is made of ultra-microporous ceramic material. The pore size of this material reaches 10nm or even smaller, and even viruses and bacteria can be filtered out; moreover, the dirt filtered out by the outer filter element 101 made of this ultra-microporous ceramic material is generally attached to its outer surface, and these dirt attached to the surface of the outer filter element 101 can be cleaned by scraping and high-pressure water washing. After cleaning, it can be reused. However, the inner filter element 201 is generally made of activated carbon material, and the inner filter element 201 made of activated carbon material cannot be reused. Therefore, the inner filter element 201 needs to be replaced regularly. The two filter elements have different service cycles. The design of this application that is convenient for disassembly and assembly can facilitate the subsequent replacement of the inner filter assembly 2 to ensure the filtering effect and extend the service life of the water purification equipment.

[0031] Through the description of the above structure and principle, technical personnel in the relevant technical field should understand that the present invention is not limited to the above specific implementation methods. Improvements and substitutions based on the present invention using the well-known technology in the field should fall within the scope of protection of the present invention and should be defined by the claims.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features being referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means more than two, unless otherwise specifically defined.

[0034] In this utility model, unless otherwise expressly specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0036] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A single-pass filtration device comprising an outer filter assembly and an inner filter assembly disposed within the outer filter assembly, characterized in that: The outer filter assembly includes a tubular outer filter element, an outer upper cover provided on the top of the outer filter element, and an outer lower cover provided on the bottom of the outer filter element, wherein the outer lower cover is used to seal the bottom of the outer filter element, and the outer upper cover includes an inner tube and an outer tube, wherein the inner tube and the outer tube are connected at the top, and a connecting tube extending upward is provided on the top surface of the connection, and an outer side wall of the connecting tube is provided with an external thread; The inner filter assembly includes a tubular inner filter element, an inner upper cover provided on the top of the inner filter element, and an inner lower cover provided on the bottom of the inner filter element. The inner upper cover is provided in the inner tube, and a plurality of sealing rings are provided between the inner upper cover and the inner tube. The outer filter assembly also includes a top cover, the inner side wall of the top cover is provided with an internal thread that matches the external thread, a through hole is provided at the center of the top cover, and a downwardly extending limit sleeve is provided at the edge of the through hole, and the limit sleeve matches the inner upper cover.

2. A single-pass filtration device according to claim 1, characterized in that: The inner tube is in a tapered shape with a larger upper portion and a smaller lower portion.

3. A single-pass filtration device according to claim 1, characterized in that: A plurality of sealing grooves for accommodating the sealing rings are provided on the outer side wall of the inner upper cover.

4. A single-pass filtration device according to claim 1, characterized in that: A positioning column extending upward is provided at the center of the outer lower cover.

5. A single-pass filtration device according to claim 4, characterized in that: The inner lower cover is provided with a positioning tube matched with the positioning column, and the top of the positioning tube is closed.

6. A single-pass filtration device according to claim 1, characterized in that: The inner diameter of the connecting tube is larger than the outer diameter of the inner tube and smaller than the inner diameter of the outer tube.

7. The single-pass filtration device according to claim 1, characterized in that: The outer diameter of the limiting sleeve is smaller than the inner diameter of the inner tube, and the inner diameter is smaller than the outer diameter of the inner upper cover.

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