Water purifying device and filter element structure

Abstract

The utility model discloses a water purifying device and a filter element structure, the filter element structure comprises a filter element and a filter element shell, the filter element shell forms a filter element cavity, and the filter element is located in the filter element cavity; the filter element shell comprises a positioning connector, the positioning connector is a columnar protrusion formed on the end face of the filter element shell, and the columnar protrusion is a non-cylinder. A shell water gap is formed in the columnar bulge and is communicated with fluid of the filter element; a sealing piece is arranged at the shell water gap and located at an opening of the shell water gap or at least partially located in the shell water gap. According to the filter element structure, the non-cylindrical columnar protrusion is arranged on the end face of the filter element shell to serve as the positioning connector, positioning after the filter element structure is installed can be achieved, rotation is avoided, stability is improved, the shell water outlet is formed in the filter element structure, the sealing piece is located at the position of the shell water outlet or at least part of the sealing piece is located in the shell water outlet, and therefore the sealing effect is improved. And the effects of positioning and sealing can be realized.

Description

Technical Field

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

[0002] The water purification device filters the water through the filtering device to achieve water purification.

[0003] The existing filter element structure includes a housing and a filter element located within the housing. The housing includes a columnar portion that houses the filter element and a cylindrical housing water inlet at one end of the columnar portion, through which water enters and exits the housing. This type of filter element structure is prone to rotation when installed in a water connection pipe, resulting in poor stability.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In view of the above problems in the prior art, the present invention proposes a water purification device and a filter element structure to solve the technical problems that the filter element structure is prone to rotation and has poor stability when installed in a waterway.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] A filter element structure, comprising:

[0008] filter element;

[0009] A filter element housing forms a filter element cavity, wherein the filter element is located in the filter element cavity;

[0010] The filter element housing includes a positioning joint, which is a cylindrical protrusion formed on the end surface of the filter element housing, and the cylindrical protrusion is non-cylindrical;

[0011] The cylindrical protrusion is provided with a housing water inlet, and the housing water inlet is in fluid communication with the filter element;

[0012] A sealing member is provided at the shell water inlet, and the sealing member is located at the shell water inlet opening or at least partially located in the shell water inlet.

[0013] In the filter element structure as described above, the columnar protrusion is an elliptical column;

[0014] Alternatively, the columnar protrusion is a polygonal column;

[0015] Alternatively, the cylindrical protrusion includes two parallel cylindrical surfaces and an arc-shaped surface connecting the parallel cylindrical surfaces;

[0016] Alternatively, the cross section of the columnar protrusion is irregular in shape.

[0017] In the filter element structure as described above, at least two shell water inlets are formed on the top of the columnar protrusion, and the columnar protrusion has a shape adapted to the outer contours of the at least two shell water inlets.

[0018] In the filter element structure as described above, the arc-shaped surface protrudes outward.

[0019] In the filter element structure as described above, the water inlets of the shell are arranged in the long axis direction of the end surface of the columnar protrusion;

[0020] Alternatively, the shell nozzles are arranged in the long axis direction and the short axis direction of the end face of the columnar protrusion, and the number of the shell nozzles arranged in the long axis direction is greater than or equal to the number of the shell nozzles arranged in the short axis direction.

[0021] In the filter element structure as described above, the sealing member is a sealing ring, which is arranged on the inner wall of the shell water inlet, and the inner diameter of the opening of the shell water inlet is larger than the inner diameter of the sealing ring and smaller than the outer diameter of the sealing ring.

[0022] In the filter element structure as described above, a pressing piece for pressing the sealing ring is provided at the end of the columnar protrusion, and an opening is provided at a portion of the pressing piece corresponding to the water inlet of the shell.

[0023] In the filter element structure as described above, the shell water inlet includes a shell raw water inlet, a shell pure water outlet and a shell waste water outlet, and the filter element is a reverse osmosis membrane filter element.

[0024] The filter element structure as described above, the filter element comprises:

[0025] A central tube having a pure water cavity, the pure water cavity being in communication with the pure water outlet of the shell;

[0026] The filter element body is sleeved on the central tube;

[0027] An end cap is located at the end of the filter element body, and a filter element raw water inlet is opened on the end cap, and the filter element raw water inlet is connected to the raw water inlet of the shell. A filter element wastewater outlet is formed between the end cap and the filter element shell, and the filter element wastewater outlet is connected to the wastewater outlet of the shell.

[0028] As described above, the filter element structure, the shell water inlet includes a front water inlet, a front water outlet, a rear water inlet and a rear water outlet, and the filter element is a composite filter element.

[0029] The filter element structure as described above, the filter element comprises:

[0030] An inner guide portion, wherein a rear water outlet cavity is formed inside the inner guide portion, and the rear water outlet cavity is communicated with the rear water outlet;

[0031] An outer flow guide portion, comprising an outer flow guide tube and a receiving portion, wherein the inner diameter of the receiving portion is larger than the inner diameter of the outer flow guide tube, the outer flow guide tube is sleeved on the outside of the inner flow guide portion, a rear water inlet channel is formed between the inner flow guide portion and the outer flow guide tube, and the rear water inlet channel is connected to the rear water inlet;

[0032] A pre-filter body is mounted on the outer guide tube, a pre-water inlet channel is formed between the pre-filter body and the filter housing, and the pre-water inlet channel is connected to the pre-water inlet; a pre-water outlet cavity is formed between the pre-filter body and the outer guide tube, and the pre-water outlet cavity is connected to the pre-water outlet;

[0033] The rear filter element body is located in the accommodating portion, the outer periphery of the rear filter element body is communicated with the rear water inlet channel, and the interior of the rear filter element body is communicated with the rear water outlet cavity.

[0034] A water purification device includes a shell, characterized in that the above-mentioned filter element structure is arranged in the shell, and a positioning structure adapted to the shape of the positioning joint is arranged in the shell.

[0035] Compared with the prior art, the advantages and positive effects of the present invention are as follows: a filter element structure includes: a filter element and a filter element housing, the filter element housing forms a filter element cavity, and the filter element is located in the filter element cavity; the filter element housing includes a positioning joint, the positioning joint is a columnar protrusion formed on the end face of the filter element housing, and the columnar protrusion is non-cylindrical; the columnar protrusion is provided with a housing water inlet, and the housing water inlet is in communication with the filter element fluid; a sealing member is provided at the housing water inlet, and the sealing member is located at the housing water inlet opening or at least partially located in the housing water inlet. The filter element structure of the present invention provides a non-cylindrical columnar protrusion on the end face of the filter element housing as a positioning joint, which can realize the positioning of the filter element structure after installation, avoid rotation, and improve stability; a housing water outlet is provided on the filter element structure, and the sealing member is located at the housing water outlet or at least partially located in the housing water outlet, which can achieve the effect of positioning and sealing at the same time.

[0036] A positioning structure that matches the shape of the positioning joint is provided in the shell of the water purification device, which can be stably assembled with the filter element structure without relative rotation between the two.

[0037] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0039] Figure 1 It is a schematic diagram of the filter element structure of a specific embodiment of the present utility model.

[0040] Figure 2 for Figure 1 side view.

[0041] Figure 3 The exploded view of the filter element structure.

[0042] Figure 4 for Figure 2 Sectional view along AA direction.

[0043] Figure 5 This is a side view of a filter element structure according to another specific embodiment of the present invention.

[0044] Figure 6 for Figure 5 Cross-sectional view along BB direction.

[0045] Figure 7 for Figure 5 Cross-sectional view along CC direction.

[0046] Figures 8-11 This is a side view of a filter element structure according to another specific embodiment of the present invention.

[0047] Figure 12 This is an exploded view of the filter element structure and water channel components in the water purification device of the utility model.

[0048] Figure 13 A schematic diagram of the waterway components.

[0049] In the picture:

[0050] 1. Filter element housing; 11. Positioning joint; 12. Housing water inlet; 121. Housing raw water inlet; 122. Housing pure water outlet; 123. Housing wastewater outlet; 124. One-way valve; 125. Front water inlet; 126. Front water outlet; 127. Rear water inlet; 128. Rear water outlet; 13. Seal; 14. Press-fit assembly; 141. Opening;

[0051] 2. Filter element; 21. Center tube; 211. Pure water chamber; 22. Filter element body; 23. First end cap; 231. Filter element raw water inlet; 232. Filter element wastewater outlet; 24. Second end cap;

[0052] 201, inner flow guide; 2011, rear water outlet chamber; 202, outer flow guide; 2021, outer flow guide tube; 2022, accommodating portion; 203, front filter element body; 204, rear filter element body; 205, rear water inlet channel; 206, front water inlet channel; 207, front water outlet chamber; 208, end cap;

[0053] 3. Water channel assembly; 31. Positioning structure; 32. Columnar interface. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0055] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the positional relationships shown in the accompanying drawings. The terms 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 on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0056] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, 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.

[0057] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0058] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0059] like Figures 1-11 As shown, a filter element structure includes a filter element housing 1 and a filter element 2 located in the filter element housing 1.

[0060] The filter element housing 1 forms a filter element cavity, and the filter element 2 is located in the filter element cavity.

[0061] The filter element housing 1 includes a positioning joint 11 , which is a columnar protrusion formed on the end surface of the filter element housing 1 , and the columnar protrusion is non-cylindrical.

[0062] The positioning joint 11 is used to assemble with the filter element structure mounting piece when installing the filter element structure. The filter element structure mounting piece is provided with a positioning groove that matches its shape. The positioning joint 11 cooperates with the positioning groove to achieve the positioning of the filter element housing 1 and ensure the stability of the installation of the filter element housing 1.

[0063] The columnar protrusion is provided with a shell water inlet 12 , and the shell water inlet 12 is in fluid communication with the filter element 2 .

[0064] A sealing member 13 is provided at the shell water inlet 12 . The sealing member 13 is located at the opening of the shell water inlet 12 or at least partially located inside the shell water inlet 12 .

[0065] The sealing member 13 is used to achieve a sealed connection between the shell water inlet 12 and the filter element structure mounting member.

[0066] A one-way valve 124 is provided in the water inlet 12 of the shell.

[0067] like Figure 1 、 Figure 2 、 Figure 5 As shown, the cylindrical protrusion includes two parallel cylindrical surfaces and an arc-shaped surface connecting the parallel cylindrical surfaces.

[0068] The arc-shaped surface protrudes outward to maximize the end surface of the columnar protrusion, so that the shell water inlet 12 can be arranged reasonably.

[0069] In some embodiments, the cylindrical protrusion is an elliptical column, such as Figure 9 shown.

[0070] exist Figure 1 、 Figure 2 、 Figure 9 In the example, the shell water inlet 12 is arranged in the long axis direction of the end surface of the columnar protrusion.

[0071] exist Figure 5 In the example, the shell nozzles 12 are arranged in the long axis direction and the short axis direction of the end face of the columnar protrusion, and the number of the shell nozzles 12 arranged in the long axis direction is greater than or equal to the number of the shell nozzles 12 arranged in the short axis direction.

[0072] exist Figure 8 In the example, at least two shell nozzles 12 are opened on the top of the columnar protrusion, and the columnar protrusion has a shape adapted to the outer contours of the at least two shell nozzles 12.

[0073] exist Figure 10 In the example, the cross section of the columnar protrusion is an irregular shape.

[0074] exist Figure 11 In the example, the columnar protrusions are polygonal columns.

[0075] The sealing member 13 is a sealing ring, which is arranged on the inner wall of the shell nozzle 12. The inner diameter of the opening of the shell nozzle 12 is larger than the inner diameter of the sealing ring and smaller than the outer diameter of the sealing ring.

[0076] In order to prevent the sealing ring from falling off, a pressing piece 14 for pressing the sealing ring is provided at the end of the columnar protrusion, and an opening 141 is provided at a position of the pressing piece 14 corresponding to the water inlet 12 of the shell.

[0077] The press-fitting piece 14 is assembled with the columnar protrusion.

[0078] A groove for mounting a press-fitting part 14 is provided on the columnar protrusion, and the sealing part 13 is in sealing contact with the press-fitting part 14 .

[0079] exist Figure 1-Figure 4 In the example, the shell water inlet 12 includes a shell raw water inlet 121, a shell pure water outlet 122 and a shell waste water outlet 123, and the filter element 2 is a reverse osmosis membrane filter element.

[0080] The filter element 2 includes a central tube 21 , a filter element body 22 , a first end cover 23 and a second end cover 24 .

[0081] The central tube 21 has a pure water cavity 211 , which is in communication with the pure water outlet 122 of the housing.

[0082] The filter element body 22 is sleeved on the central tube 21. The central tube 21 has a through hole for connecting the pure water cavity 211 and the filter element body 22.

[0083] The first end cap 23 is located at the end of the filter element body 22 close to the positioning joint 11 .

[0084] A filter element raw water inlet 231 is provided on the first end cover 23 , which is communicated with the shell raw water inlet 121 , and a filter element waste water outlet 232 is formed between the first end cover 23 and the filter element shell 1 , which is communicated with the shell waste water outlet 123 .

[0085] The second end cap 24 is located at the other end of the filter element body 22 and the central tube 21 and is used to seal the filter element body 22 and the central tube 21 .

[0086] During filtration, raw water enters from the raw water inlet 121 of the shell, enters the filter element body 22 through the filter element raw water inlet 231 of the first end cover 23, and through the filtering effect of the filter element body 22, the pure water produced by the filter element body 22 enters the pure water cavity 211 through the through hole on the central tube 21, and is discharged through the shell pure water outlet 122; the waste water produced by the filter element body 22 enters the waste water cavity between the outer periphery of the filter element body 22 and the filter element shell 1, enters the shell waste water outlet 123 through the filter element waste water outlet 232, and is discharged through the shell waste water outlet 123.

[0087] exist Figure 5-Figure 7 In the example, the shell water inlet 12 includes a front water inlet 125, a front water outlet 126, a rear water inlet 127 and a rear water outlet 128, and the filter element 2 is a composite filter element.

[0088] The filter element 2 includes an inner flow guide portion 201 , an outer flow guide portion 202 , a front filter element body 203 and a rear filter element body 204 .

[0089] A rear water outlet cavity 2011 is formed inside the inner guide portion 201 , and the rear water outlet cavity 2011 is communicated with the rear water outlet 128 .

[0090] The outer flow guiding portion 202 includes an outer flow guiding tube 2021 and a receiving portion 2022 . The inner diameter of the receiving portion 2022 is larger than the inner diameter of the outer flow guiding tube 2021 .

[0091] The outer flow guide tube 2021 is sleeved on the outside of the inner flow guide part 201, and a rear water inlet channel 205 is formed between the inner flow guide part 201 and the outer flow guide tube 2021. The rear water inlet channel 205 is connected to the rear water inlet 127;

[0092] The pre-filter body 203 is mounted on the outer guide tube 2021, and a pre-water inlet channel 206 is formed between the pre-filter body 203 and the filter housing 1, and the pre-water inlet channel 206 is connected to the pre-water inlet 125; a pre-water outlet chamber 207 is formed between the pre-filter body 203 and the outer guide tube 2021, and the pre-water outlet chamber 207 is connected to the pre-water outlet 126.

[0093] The rear filter element body 204 is located within the housing portion 2022. The open end of the housing portion 2022 is sealed by an end cap 208. The periphery of the rear filter element body 204 is connected to the rear water inlet channel 205, and the interior of the rear filter element body 204 is connected to the rear water outlet chamber 2011. The rear filter element body 204 is isolated from the front filter element body 203.

[0094] When the pre-filter body 203 is filtering, raw water enters the pre-water inlet channel 206 from the pre-water inlet 125 , and after being filtered by the pre-filter body 203 , the filtered water enters the pre-water outlet chamber 207 and is discharged through the pre-water outlet 126 .

[0095] When the rear filter element body 204 is filtering, water enters the rear water inlet channel 205 from the rear water inlet 127 and enters the periphery of the rear filter element body 204. After the filtering effect of the rear filter element body 204, the filtered water enters the space enclosed by the rear filter element body 204 and then enters the rear water outlet cavity 2011, and is discharged through the rear water outlet 128.

[0096] like Figure 9 、 Figure 10 As shown, a water purification device includes a shell, the filter element structure mentioned above is arranged in the shell, and a positioning structure 31 that is adapted to the shape of the positioning joint 11 is arranged in the shell.

[0097] Specifically, a water channel assembly 3 is provided in the shell, a groove is provided on the water channel assembly 3 as a positioning structure 31, the shape of the positioning joint 11 is adapted to the shape of the groove, a cylindrical interface 32 is provided in the groove, and the cylindrical interface 32 is sealed and connected to the seal 13 of the positioning joint 11.

[0098] When the filter element structure is installed on the water channel assembly 3 in the shell, the positioning joint 11 is inserted into the positioning structure 31, and the two are assembled stably. At the same time, the cylindrical interface 32 is sealed and connected with the sealing member 13 in the shell water inlet 12 to ensure the sealing effect.

[0099] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A filter element structure, comprising: filter element; A filter element housing forms a filter element cavity, wherein the filter element is located in the filter element cavity; It is characterized in that the filter element housing includes a positioning joint, which is a columnar protrusion formed on the end surface of the filter element housing, and the columnar protrusion is non-cylindrical; The cylindrical protrusion is provided with a housing water inlet, and the housing water inlet is in fluid communication with the filter element; A sealing member is provided at the shell water inlet, and the sealing member is located at the shell water inlet opening or at least partially located in the shell water inlet.

2. The filter element structure according to claim 1, characterized in that: The cylindrical protrusion is an elliptical cylinder; Alternatively, the columnar protrusion is a polygonal column; Alternatively, the cylindrical protrusion includes two parallel cylindrical surfaces and an arc-shaped surface connecting the parallel cylindrical surfaces; Alternatively, the cross section of the columnar protrusion is irregular in shape.

3. The filter element structure according to claim 1, characterized in that: At least two shell nozzles are formed on the top of the columnar protrusion, and the columnar protrusion has a shape adapted to the outer contours of the at least two shell nozzles.

4. The filter element structure according to claim 2, characterized in that: The arc-shaped surface bulges outward.

5. The filter element structure according to claim 2, characterized in that: The shell water inlets are arranged in the long axis direction of the end surface of the columnar protrusion; Alternatively, the shell nozzles are arranged in the long axis direction and the short axis direction of the end face of the columnar protrusion, and the number of the shell nozzles arranged in the long axis direction is greater than or equal to the number of the shell nozzles arranged in the short axis direction.

6. The filter element structure according to claim 1, characterized in that: The sealing member is a sealing ring, which is arranged on the inner wall of the shell water inlet. The inner diameter of the opening of the shell water inlet is larger than the inner diameter of the sealing ring and smaller than the outer diameter of the sealing ring.

7. The filter element structure according to claim 6, characterized in that: The end of the columnar protrusion is provided with a pressing piece for pressing the sealing ring, and an opening is provided at a position of the pressing piece corresponding to the water outlet of the shell.

8. The filter element structure according to any one of claims 1 to 7, characterized in that: The shell water inlet includes a shell raw water inlet, a shell pure water outlet and a shell waste water outlet, and the filter element is a reverse osmosis membrane filter element.

9. The filter element structure according to claim 8, characterized in that: The filter element comprises: A central tube having a pure water cavity, the pure water cavity being in communication with the pure water outlet of the shell; The filter element body is sleeved on the central tube; An end cap is located at the end of the filter element body, and a filter element raw water inlet is opened on the end cap, and the filter element raw water inlet is connected to the raw water inlet of the shell. A filter element wastewater outlet is formed between the end cap and the filter element shell, and the filter element wastewater outlet is connected to the wastewater outlet of the shell.

10. The filter element structure according to any one of claims 1 to 7, characterized in that: The shell water inlet includes a front water inlet, a front water outlet, a rear water inlet and a rear water outlet, and the filter element is a composite filter element.

11. The filter element structure according to claim 10, characterized in that: The filter element comprises: An inner guide portion, wherein a rear water outlet cavity is formed inside the inner guide portion, and the rear water outlet cavity is communicated with the rear water outlet; An outer flow guide portion, comprising an outer flow guide tube and a receiving portion, wherein the inner diameter of the receiving portion is larger than the inner diameter of the outer flow guide tube, the outer flow guide tube is sleeved on the outside of the inner flow guide portion, a rear water inlet channel is formed between the inner flow guide portion and the outer flow guide tube, and the rear water inlet channel is connected to the rear water inlet; A pre-filter body is mounted on the outer guide tube, a pre-water inlet channel is formed between the pre-filter body and the filter housing, and the pre-water inlet channel is connected to the pre-water inlet; a pre-water outlet cavity is formed between the pre-filter body and the outer guide tube, and the pre-water outlet cavity is connected to the pre-water outlet; The rear filter element body is located in the accommodating portion, the outer periphery of the rear filter element body is communicated with the rear water inlet channel, and the interior of the rear filter element body is communicated with the rear water outlet cavity.

12. A water purification device, comprising a housing, characterized in that: The filter element structure according to any one of claims 1 to 11 is arranged in the shell, and a positioning structure that is adapted to the shape of the positioning joint is arranged in the shell.

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