Pre-filter with top-mounted filter bottle

Abstract

The pre-filter comprises a valve casing, a filtering mechanism and the filter bottle, the valve casing is provided with a raw water end, a purified water end, an upward filter bottle assembling end, a downward pollution discharge end and a valve casing cavity, the pollution discharge end is provided with a pollution discharge assembly, the filter bottle and the filter bottle assembling end are fixed in a matched mode, the filtering mechanism is arranged in the filter bottle, and the valve casing cavity is provided with a water inlet and a water outlet. A cavity between the filtering mechanism and the filtering bottle forms a raw water cavity, a purified water cavity is formed in the filtering mechanism, a flow channel switching assembly is arranged in a valve shell cavity, the flow channel switching assembly is provided with a raw water flow channel, a purified water flow channel and a sewage discharge flow channel, and the flow channel switching assembly is in circumferential rotating sealing connection or axial sliding sealing connection with the valve shell cavity. When the flow channel switching assembly rotates in the circumferential direction or slides in the axial direction under the action of the driving part, the raw water flow channel and / or the purified water flow channel can be closed and opened. And the driving part is a driving element which extends to the outside of the filter bottle along the axial direction of the filter bottle and is in rotary sealing connection or axial sliding sealing connection. The structure is optimized, and installation occasions can be easily matched.

Description

Technical Field

[0001] The utility model relates to a filter bottle mounted pre-filter, belonging to the technical field of water purification equipment. Background Art

[0002] The mainstream products of the pre-filter in the prior art are of the filter bottle bottom type, including: a machine head, a filter bottle connected to the machine head at the upper end, and a drainage ball valve connected to the lower end of the filter bottle. A filter screen skeleton is arranged in the filter bottle, and the outer wall of the filter screen skeleton is provided with a filter screen. During use, water flows into the gap between the filter bottle and the filter screen from the water inlet of the machine head, flows into the center of the filter screen skeleton after being filtered by the filter screen, and then flows from the center of the filter screen skeleton to the water outlet of the machine head. When sewage needs to be discharged, the drainage ball valve at the lower end of the filter bottle is opened. In some installation occasions, the installation of the filter bottle bottom type pre-filter is inconvenient. For this reason, the filter bottle top type pre-filter is born in response to market demand. In addition to the water inlet, water outlet and filter bottle installation port, the valve head of the pre-filter also needs to be provided with a sewage outlet, that is, the function of the drainage ball valve originally arranged at the lower end of the filter bottle needs to be transferred to the valve head, so it is necessary to optimize and adjust the traditional valve head structure. The utility model aims to provide a filter bottle top type pre-filter with a more optimized structure and easy to match the installation occasion. Utility Model Content

[0003] One of the purposes of the utility model is to solve the deficiencies of the pre-filter in the prior art and to provide a filter bottle mounted pre-filter which has a more optimized structure and is easy to match the installation occasion.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A filter bottle mounted pre-filter comprises a valve housing, a filter mechanism and a filter bottle, wherein the valve housing is provided with a raw water end, a clean water end, an upward filter bottle assembly end, a downward sewage discharge end and a valve housing cavity, wherein the sewage discharge end is provided with a sewage discharge assembly, the filter bottle is fixedly matched with the filter bottle assembly end, the filter mechanism is arranged in the filter bottle, the cavity between the filter mechanism and the filter bottle constitutes a raw water cavity, the interior of the filter mechanism constitutes a purified water cavity, a flow channel switching assembly is arranged in the valve housing cavity, the flow channel switching assembly is provided with a raw water flow channel, a purified water flow channel and a sewage discharge flow channel, the flow channel switching assembly is circumferentially rotatingly sealed or axially slidingly sealed with the valve housing cavity, and when the flow channel switching assembly rotates circumferentially or slides axially under the action of a driving member, it can close and open the raw water flow channel and / or the purified water flow channel;

[0006] The driving member is a driving element that extends along the axial direction of the filter bottle to the outside of the filter bottle and is connected in a rotational sealing connection or an axial sliding sealing connection.

[0007] The utility model realizes that in addition to the water inlet, water outlet and filter bottle installation port of the valve head, a sewage outlet is also provided, that is, the function of the drainage ball valve originally provided at the lower end of the filter bottle is transferred to the valve head, and the traditional valve head structure is effectively optimized and adjusted. Specifically, during filtration, the flow channel switching component is rotated to realize the connection between the raw water end, the raw water flow channel and the raw water cavity, and the connection between the purified water flow channel and the purified water cavity and the clean water end; when sewage needs to be discharged, the flow channel switching component is rotated to close the raw water flow channel and / or the purified water flow channel, and the sewage valve is opened.

[0008] Preferably, the driving member is a driving element extending upward along the axial direction of the filter bottle, including a driving handle and a driving rod, one end of the driving rod is fixed to the flow channel switching assembly, and the other end is fixed to the driving handle; or the driving element includes a driving handle and a driving skeleton, and the two ends of the driving skeleton are directly or indirectly fixed to the flow channel switching assembly and the driving handle respectively; or the driving element includes a driving handle, and the skeleton of the filtering mechanism serves as the driving skeleton, and the two ends of the skeleton of the filtering mechanism are respectively fixed to the driving handle and the flow channel switching assembly.

[0009] Preferably, the filter bottle assembly end is provided with a quick-install structure assembled with the filter bottle, and the quick-install structure adopts a detachable structure, including a screw connection structure and a clamping structure. This quick-install structure is convenient for users to install, and is also convenient for replacement and maintenance of the filter bottle, or when the valve head is blocked by impurities, it is easy to disassemble and clean.

[0010] Preferably, at least one limiting portion A is provided in the valve housing cavity, and the flow channel switching assembly is provided with at least one matching limiting portion B, and the circumferential limiting or circumferential and axial synchronous limiting of the flow channel switching assembly is achieved through the cooperation of the limiting portion A and the limiting portion B. The circumferential limiting or circumferential and axial synchronous limiting is achieved through the simple cooperation of the limiting portions A\B, thereby avoiding axial misalignment of the flow channel switching assembly during circumferential rotation, and being able to conveniently determine the target position of the circumferential rotation.

[0011] More preferably, a limit portion A is provided at the upper and lower parts of the valve housing cavity, respectively, and the flow channel switching assembly is provided with two matching limit portions B, and the double limit of the flow channel switching assembly is achieved through the double cooperation of the upper and lower limit portions A and the limit portions B. The double limit is achieved through the simple cooperation of the double limit portions A\B, which avoids axial misalignment of the flow channel switching assembly during circumferential rotation, and can conveniently determine the target position of the circumferential rotation, further improving the reliability of the valve head flow channel switching.

[0012] Preferably, the limiting part A is a groove or a convex block structure, and the limiting part B is a convex block or a groove structure. This type of limiting structure is convenient for mold processing, easy to demould, and has high limiting reliability.

[0013] Preferably, the driving handle is manually driven and / or electrically driven to realize manual, automatic or manual-automatic driving and rotation of the flow channel switching component, thereby improving the application scenarios of the product.

[0014] Preferably, a sealing element is provided between the flow channel switching assembly and the valve housing cavity, and a rotating sealing connection is achieved through the cooperation of the sealing element.

[0015] Preferably, a scraping mechanism is further provided outside the filtering mechanism, and the scraping mechanism can rotate relative to the filtering mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter screen.

[0016] Preferably, the scraping mechanism is provided with a scraping knob, which is coaxially arranged with the driving handle and rotatably sealed with the filter bottle, the end of the scraping knob is fixed to the scraping mechanism, and the scraping knob is manually driven or electrically driven.

[0017] Preferably, the scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush.

[0018] The beneficial effects of the utility model are as follows: 1) In addition to the water inlet, the water outlet and the filter bottle installation port, the utility model also sets a sewage outlet on the valve head, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional valve head structure is effectively optimized and adjusted. Specifically, during filtration, the raw water end, the raw water cavity and the raw water flow channel are connected through the rotation of the flow channel switching component, and the connection between the purified water flow channel, the purified water cavity and the clean water end is realized; when sewage needs to be discharged, the flow channel switching component is rotated to close the raw water flow channel and / or the purified water flow channel, and the sewage valve is opened; 2) Circumferential limiting or circumferential and axial synchronous limiting is realized through the cooperation of simple limiting parts A\B, so as to avoid axial dislocation when the flow channel switching component rotates circumferentially, and the target position of circumferential rotation can be conveniently determined; 3) The utility model designs a rotating drive member to realize the drive from the top of the filter bottle, better realize the flow channel switching function of the valve head, and has excellent practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 yes Figure 1 A cross-sectional view of

[0022] Figure 3 yes Figure 1 A cross-sectional view of

[0023] Figure 4 yes Figure 1 Cross-sectional view (opening the raw water flow channel and the purified water flow channel);

[0024] Figure 5 yes Figure 1 Cross-sectional view (raw water flow channel and purified water flow channel closed).

[0025] In the figure: 1. valve housing, 11. water inlet end, 12. water outlet end, 13. filter bottle assembly end, 14. sewage discharge end, 15. valve housing cavity, 2. flow channel switching assembly, 21. raw water flow channel, 22. clean water flow channel, 23. sewage discharge flow channel, 3. limiting part A, 4. limiting part B, 5. sewage discharge seal, 6. sewage discharge valve, 7. driving handle. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships 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 operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] like Figure 1-5As shown, the filter bottle top-mounted pre-filter comprises a valve housing 1, a filter mechanism and a filter bottle, wherein the filter mechanism is arranged in the filter bottle, the cavity between the filter mechanism and the filter bottle constitutes a raw water cavity, and the interior of the filter mechanism constitutes a purified water cavity; the valve housing 1 is provided with a raw water end 11, a purified water end 12, an upward filter bottle assembly end 13, a downward sewage discharge end 14 and a valve housing cavity 15, the filter bottle is fixedly matched with the filter bottle assembly end, the sewage discharge end 14 is provided with a sewage discharge component, the valve housing cavity 15 is provided with a flow channel switching component 2, and the flow channel switching component 2 is provided in the valve housing cavity 15. The switching component 2 is provided with a raw water flow channel 21 corresponding to the raw water end 11, a purified water flow channel 22 corresponding to the filter bottle assembly end 13 and the clean water end 12, and a sewage flow channel corresponding to the sewage end 14. The flow channel switching component 2 is rotatably sealed and connected to the valve shell cavity 15. When the flow channel switching component 2 rotates under the action of the driving member, it can close and open the raw water flow channel 21 and / or the purified water flow channel 22. The driving member is a driving element that extends axially along the filter bottle to the outside of the filter bottle and is rotatably sealed or axially slidingly sealed.

[0031] The utility model realizes that in addition to the water inlet, water outlet and filter bottle installation port of the valve head, a sewage outlet is also set, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional valve head structure is effectively optimized and adjusted. Specifically, during filtering, the flow channel switching component 2 is rotated to realize the connection between the raw water end 11 and the raw water flow channel 21, and the connection between the purified water flow channel 22 and the clean water end 12; when sewage needs to be discharged, the flow channel switching component 2 is rotated to close the raw water flow channel 21 and / or the purified water flow channel 22, and the sewage valve is opened.

[0032] Specifically, the driving member is a driving element extending upward along the axial direction of the filter bottle, including a driving handle 7 and a driving rod, one end of the driving rod is fixed to the flow channel switching component 2, and the other end is fixed to the driving handle 7; or the driving element includes the driving handle 7 and a driving skeleton, and the two ends of the driving skeleton are directly or indirectly fixed to the flow channel switching component 2 and the driving handle 7 respectively; or the driving element includes the driving handle 7, and the skeleton of the filtering mechanism serves as the driving skeleton, and the two ends of the skeleton of the filtering mechanism are respectively fixed to the driving handle 7 and the flow channel switching component. This embodiment selects the third implementation scheme, that is, the skeleton of the filtering mechanism serves as the driving skeleton.

[0033] In addition, the flow channel switching assembly 2 and the valve housing cavity 15 can also be axially slidably sealed in connection, and those skilled in the art can make a choice as needed.

[0034] In this embodiment, the filter bottle assembly end 13 is provided with a quick-install structure assembled with the filter bottle, and the quick-install structure adopts a detachable structure, including a screw connection structure and a clamping structure. This quick-install structure is convenient for users to install, and is also convenient for replacement and maintenance of the filter bottle, or when the valve head is blocked by impurities, it is easy to disassemble and clean.

[0035] Specifically, at least one limiting portion A3 is provided in the valve housing cavity 15, and at least one matching limiting portion B4 is provided in the flow channel switching assembly 2. The limiting portion A3 cooperates with the limiting portion B4 to achieve circumferential limiting or circumferential and axial synchronous limiting of the flow channel switching assembly 2. The circumferential limiting or circumferential and axial synchronous limiting is achieved by simply cooperating with the limiting portions A\B, thereby avoiding axial misalignment when the flow channel switching assembly 2 rotates circumferentially, and being able to conveniently determine the target position of the circumferential rotation.

[0036] More specifically, as a better alternative, a limit portion A3 is provided at the upper and lower parts of the valve housing cavity 15, and two matching limit portions B4 are provided at the flow channel switching component 2. The double limit of the flow channel switching component 2 is achieved through the double cooperation of the upper and lower limit portions A3 and the limit portions B4. The double limit is achieved through the simple cooperation of the double limit portions A\B, which avoids axial misalignment of the flow channel switching component 2 during circumferential rotation, and can conveniently determine the target position of the circumferential rotation, further improving the reliability of the valve head flow channel switching.

[0037] In this embodiment, the position limiting portion A3 is a groove or a convex block structure, and the position limiting portion B4 is a convex block or a groove structure. This type of position limiting structure is easy to process and demould, and has high position limiting reliability.

[0038] In this embodiment, the driving element is a manual driving element and / or an electric driving element. The flow channel switching component 2 is driven to rotate manually, automatically or manually and automatically, and the application scenario of the product is improved. A sealing element is provided between the flow channel switching component 2 and the valve housing cavity 15, and a rotating sealing connection is achieved through the cooperation of the sealing element.

[0039] In this embodiment, a scraping mechanism is further provided outside the filtering mechanism. The scraping mechanism can rotate relative to the filtering mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter screen. The scraping mechanism is provided with a scraping knob 8. The scraping knob 8 is coaxially arranged with the driving handle 7 and is rotatably sealed with the filter bottle. The end of the scraping knob 8 is fixed to the scraping mechanism. The scraping knob 8 is manually driven or electrically driven. The scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush.

[0040] The beneficial effects of the utility model are as follows: 1) In addition to the water inlet, the water outlet and the filter bottle installation port, the utility model also sets a sewage outlet on the valve head, that is, the function of the drainage ball valve originally set at the lower end of the filter bottle is transferred to the valve head, and the traditional valve head structure is effectively optimized and adjusted. Specifically, during filtration, the raw water end, the raw water cavity and the raw water flow channel are connected through the rotation of the flow channel switching component, and the connection between the purified water flow channel, the purified water cavity and the clean water end is realized; when sewage needs to be discharged, the flow channel switching component is rotated to close the raw water flow channel and / or the purified water flow channel, and the sewage valve is opened; 2) Circumferential limiting or circumferential and axial synchronous limiting is realized through the cooperation of simple limiting parts A\B, so as to avoid axial dislocation when the flow channel switching component rotates circumferentially, and the target position of circumferential rotation can be conveniently determined; 3) The utility model designs a rotating drive member to realize the drive from the top of the filter bottle, better realize the flow channel switching function of the valve head, and has excellent practical performance.

[0041] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A filter bottle mounted pre-filter, comprising a valve housing (1), a filter mechanism and a filter bottle, wherein the valve housing (1) is provided with a raw water end (11), a purified water end (12), an upward filter bottle assembly end (13), a downward sewage discharge end (14) and a valve housing cavity (15), wherein the sewage discharge end (14) is provided with a sewage discharge assembly, the filter bottle is fixedly matched with the filter bottle assembly end (13), the filter mechanism is arranged in the filter bottle, the cavity between the filter mechanism and the filter bottle constitutes a raw water cavity, and the interior of the filter mechanism constitutes a purified water cavity, and the characteristics are as follows: A flow channel switching assembly (2) is provided in the valve housing cavity (15), the flow channel switching assembly (2) being provided with a raw water flow channel (21), a purified water flow channel (22) and a sewage discharge flow channel (23); the flow channel switching assembly (2) is circumferentially rotatingly sealed or axially slidingly sealed to the valve housing cavity (15); when the flow channel switching assembly (2) rotates circumferentially or slides axially under the action of a driving member, it can close and open the raw water flow channel (21) and / or the purified water flow channel (22); The driving member is a driving element that extends along the axial direction of the filter bottle to the outside of the filter bottle and is connected in a rotational sealing connection or an axial sliding sealing connection.

2. The filter bottle mounted pre-filter according to claim 1, characterized in that: The driving member is a driving element extending upward along the axial direction of the filter bottle, comprising a driving handle and a driving rod, one end of the driving rod being fixed to the flow channel switching component (2), and the other end being fixed to the driving handle; or the driving element comprises a driving handle and a driving frame, the two ends of the driving frame being respectively directly or indirectly fixed to the flow channel switching component (2) and the driving handle; or the driving element comprises a driving handle, the frame of the filtering mechanism serves as the driving frame, and the two ends of the frame of the filtering mechanism are respectively fixed to the driving handle and the flow channel switching component (2).

3. The filter bottle mounted pre-filter according to claim 1 or 2, characterized in that: At least one limiting portion A (3) is provided in the valve housing cavity (15), and the flow channel switching assembly (2) is provided with at least one matching limiting portion B (4), and through the cooperation of the limiting portion A (3) and the limiting portion B (4), circumferential limiting or synchronous circumferential and axial limiting of the flow channel switching assembly (2) is achieved.

4. The filter bottle mounted pre-filter according to claim 3, characterized in that: A limiting portion A (3) is provided at the upper and lower parts of the valve housing cavity (15), respectively, and the flow channel switching assembly (2) is correspondingly provided with two matching limiting portions B (4). Through the dual cooperation of the upper and lower limiting portions A (3) and the limiting portions B (4), dual limiting of the flow channel switching assembly (2) is achieved.

5. The filter bottle mounted pre-filter according to claim 4, characterized in that: The limiting portion A (3) is a groove or a convex block structure, and the limiting portion B (4) is a convex block or a groove structure.

6. The filter bottle mounted pre-filter according to claim 2, characterized in that: The driving handle is driven manually and / or electrically.

7. The filter bottle mounted pre-filter according to claim 1 or 2, characterized in that: A sealing element is provided between the flow channel switching assembly (2) and the valve housing cavity (15), and a rotating sealing connection is achieved through the cooperation of the sealing element.

8. The filter bottle mounted pre-filter according to claim 1 or 2, characterized in that: A scraping mechanism is also provided outside the filtering mechanism, and the scraping mechanism can rotate relative to the filtering mechanism to scrape the inner wall of the filter bottle and / or the outer wall of the filter screen.

9. The filter bottle mounted pre-filter according to claim 8, characterized in that: The scraping mechanism is provided with a scraping knob, which is coaxially arranged with the driving handle and rotatably sealed with the filter bottle. The end of the scraping knob is fixed to the scraping mechanism, and the scraping knob is manually driven or electrically driven.

10. The filter bottle mounted pre-filter according to claim 8, characterized in that: The scraping part of the scraping mechanism adopts any one or more of a plastic scraper, a silicone scraper or a brush.

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