Valve head structure of filter core type pre-filter convenient to disassemble and wash and pre-filter

Abstract

The utility model relates to a valve head structure of filter core type prefilter convenient to disassemble and wash and prefilter, including valve shell, the valve shell is equipped with water inlet channel, water outlet channel, the filter bottle assembly port of going down and valve shell cavity: be equipped with flow channel switching spare in the valve shell cavity, flow channel switching spare will valve shell cavity divide into water inlet channel valve shell cavity and water outlet channel valve shell cavity, water inlet channel valve shell cavity is linked together with water inlet channel, water outlet channel valve shell cavity is linked together with water outlet channel, flow channel switching spare still is equipped with assembly cavity, can detachably assemble knob, the knob can detachably assemble filter core. Adopting disposable integration filter core type filter mechanism, through the filter core of regular replacement, realize the maintenance of prefilter. The utility model structure is more optimal, and the replacement is convenient.

Description

Technical Field

[0001] This utility model relates to a valve head structure and a pre-filter of a cartridge type that can be easily disassembled and washed, belonging to the technical field of water purification equipment. Background Technology

[0002] The mainstream pre-filters in the current technology are of the bottom-mounted filter bottle type, including: a head unit, a filter bottle connected to the head unit at the top, and a drain ball valve connected to the bottom of the filter bottle. A filter screen frame is installed inside the filter bottle, and a filter screen is fitted onto the outer wall of the filter screen frame. During use, water flows from the inlet of the head unit into the gap between the filter bottle and the filter screen. After being filtered by the filter screen, water flows into the center of the filter screen frame, and then from the center of the filter screen frame to the outlet of the head unit. When drainage is required, the drain ball valve at the bottom of the filter bottle is opened.

[0003] In addition, during the use of a pre-filter, the filter elements and screens need to be cleaned regularly. This is generally achieved through a backwashing mechanism, and the residue is then discharged through the drain port. However, the backwashing filter screen of the backwashing mechanism itself also needs to be cleaned and drained regularly. Currently, there is a trend in the pre-filter field towards using disposable, integrated cartridge-type filter mechanisms, where maintenance is achieved through periodic cartridge replacement.

[0004] This invention aims to provide a valve head structure for a cartridge-type pre-filter with a more optimized structure, convenient disassembly and replacement, and easy cleaning. This invention also provides a pre-filter with this easily cleanable cartridge-type pre-filter valve head structure. Utility Model Content

[0005] One of the purposes of this utility model is to address the shortcomings of existing pre-filters and provide a valve head structure for a cartridge-type pre-filter that is more optimized in structure, easier to match installation occasions, has multiple sewage discharge channels to meet different application modes, and is easy to disassemble and clean.

[0006] The second objective of this utility model is to provide a pre-filter with a valve head structure that incorporates the easily removable and washable cartridge-type pre-filter.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] The valve head structure of the easily detachable and washable cartridge-type pre-filter includes a valve housing, which has an inlet channel, an outlet channel, a downward-facing filter bottle assembly port, and a valve housing cavity. The valve housing cavity contains a flow channel switching component that divides the valve housing cavity into an inlet channel valve housing cavity and an outlet channel valve housing cavity. The inlet channel valve housing cavity is connected to the inlet channel, and the outlet channel valve housing cavity is connected to the outlet channel. The flow channel switching component also has an assembly cavity with a detachable knob for detachably assembling the filter cartridge.

[0009] This invention features a valve head with an inlet channel, an outlet channel, and a downward-facing filter bottle assembly end. The filter element can be easily replaced through a detachable assembly method.

[0010] Preferably, the flow channel switching component is provided with a water inlet and a circumferentially arranged water outlet cavity. Sealing elements are provided on both sides of the water outlet cavity. Through the cooperation of the sealing elements with the inner wall of the valve body, the flow channel switching component is sealed to the valve body, and the water inlet is sealed to the water inlet channel.

[0011] Preferably, the flow channel switching component includes a valve housing cavity assembly and a knob assembly. The valve housing cavity assembly has a sandwich structure, which is divided into an outer cavity and an inner cavity. The outer cavity is connected to the water inlet channel and the water inlet nozzle, and the inner cavity is connected to the water outlet cavity and the water outlet channel. The knob assembly is provided with a snap-fit ​​structure, and the knob snaps into the knob assembly.

[0012] Preferably, the knob assembly part is provided with a slide groove or slide rail, and the knob is provided with a suitable slide rail or slide groove. Through the cooperation of the slide rail and the slide groove, it is rotated to the snap-fit ​​position and locked.

[0013] Preferably, the water inlet channel and the water outlet channel are located on the same side of the valve body and share a common water outlet channel seat, and the water outlet channel seat is provided with water inlet and outlet diversion components.

[0014] Preferably, the flow channel switching component is integrally molded from an inert material, which is rubber or plastic, or at least the side in contact with water is coated with an inert material, which is plastic, rubber, or ceramic.

[0015] Preferably, the inlet channel, outlet channel, and filter bottle assembly port are provided with isolation bushings. The isolation bushings are made of inert material and include an inlet channel isolation bushing, an outlet channel isolation bushing, and an assembly port isolation bushing. They are integrally injection molded from plastic or rubber material. Alternatively, at least one side of the isolation bushing in contact with water is coated with an inert material, which is plastic, rubber, or ceramic.

[0016] A pre-filter includes a valve head, a filter bottle, and a filter element, and adopts a valve head structure of a cartridge-type pre-filter that is easy to disassemble and wash.

[0017] Preferably, the filter element is an external pressure filter element, including a filter element frame and a filter element body. The filter element frame has an assembly end that is detachably fixed to the knob, and has a purified water outlet that communicates with the outlet channel valve housing cavity.

[0018] Preferably, the filter element frame and the knob are fixed by a snap-fit ​​structure.

[0019] The beneficial effects of this utility model are: This utility model features an inlet channel, an outlet channel, and a downward-facing filter bottle assembly end on the valve head. It is assembled in a detachable manner, allowing for convenient replacement of the filter element. In other words, it employs a disposable, integrated filter element filtration mechanism, enabling maintenance of the pre-filter through periodic filter element replacement, which is efficient, convenient, and reliable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of this utility model;

[0030] Figure 10 This is a schematic diagram of the structure of this utility model.

[0031] In the diagram: 1. Valve housing; 11. Inlet channel; 12. Outlet channel; 13. Filter bottle assembly port; 14. Valve housing cavity; 14a. Inlet channel valve housing cavity; 14b. Outlet channel valve housing cavity; 2. Flow channel switching component; 21. Inlet nozzle; 22. Outlet cavity; 3. Knob; 4. Filter bottle; 5. Filter element; 51. Purified water outlet; 6. Inlet and outlet water separation components; A. Filter element snap-fit ​​structure; B. Sealing element; C. Knob snap-fit ​​structure; D. Valve housing snap-fit ​​part; E. Flow channel switching component snap-fit ​​part. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Example 1

[0037] like Figure 1-7 As shown, the valve head structure of the easily detachable and washable cartridge-type pre-filter includes a valve housing 1. The valve housing 1 has an inlet channel 11, an outlet channel 12, a downward-facing filter bottle assembly port 13, and a valve housing cavity 14. The valve housing cavity 14 is provided with a flow channel switching component 2, which divides the valve housing cavity 14 into an inlet channel valve housing cavity 14a and an outlet channel valve housing cavity 14b. The inlet channel valve housing cavity 14a is connected to the inlet channel 11, and the outlet channel valve housing cavity 14b is connected to the outlet channel 12. The flow channel switching component 2 is also provided with an assembly cavity, on which a knob 3 is detachably mounted. The knob 3 allows for the detachable mounting and disassembly of the filter cartridge.

[0038] Specifically, the flow channel switching component 2 is provided with an inlet nozzle 21 and a circumferentially arranged outlet cavity 22. Sealing elements B are provided on both sides of the outlet cavity 22. Through the cooperation of the sealing elements B with the inner wall of the valve housing 1, the flow channel switching component 2 is sealed to the valve housing 1, and the inlet nozzle 21 is sealed to the inlet channel 11. The flow channel switching component 2 includes a valve housing cavity assembly part and a knob assembly part. The valve housing cavity assembly part has a sandwich structure, divided into an outer cavity and an inner cavity. The outer cavity communicates with the inlet channel 11 and the inlet nozzle 21, and the inner cavity communicates with the outlet cavity 22 and the outlet channel 12. The knob assembly part is provided with a snap-fit ​​structure (flow channel switching component snap-fit ​​part E). The knob 3 (via the knob snap-fit ​​structure C) snaps into the knob assembly part. The valve housing 1 is provided with a matching valve housing snap-fit ​​part D corresponding to the flow channel switching component snap-fit ​​part E, improving the reliability of the snap-fit. The knob assembly is provided with a groove or slide rail, and the knob 3 is provided with a matching slide rail or groove. Through the cooperation of the slide rail and the groove, it is rotated to the snap-fit ​​position and fixed. The water inlet channel 11 and the water outlet channel 12 are located on the same side of the valve body 1, sharing a single water outlet channel seat. The water outlet channel seat is provided with water inlet / outlet flow components 6. The flow channel switching component 2 is integrally molded from an inert material, which is rubber or plastic, or at least the side in contact with water has an inert material coating, which is plastic, rubber, or ceramic. The water inlet channel 11, the water outlet channel 12, and the filter bottle assembly port 13 are provided with isolation bushings. The isolation bushings are made of an inert material and include an inlet channel isolation bushing, an outlet channel isolation bushing, and an assembly port isolation bushing, integrally injection molded from plastic or rubber material; or the isolation bushing has an inert material coating on at least the side in contact with water, which is plastic, rubber, or ceramic.

[0039] A pre-filter includes a valve head, a filter bottle 4, and a filter element 5. It adopts the valve head structure of the easily detachable and washable filter element pre-filter. The filter element 5 is an external pressure filter element, including a filter element frame and a filter element body. The filter element frame has an assembly end, which is detachably fixed to a knob 3, and has a purified water outlet 51, which is connected to the water outlet channel valve housing cavity 14b. The filter element frame and the knob 3 are fixed by a snap-fit ​​structure (filter element snap-fit ​​structure A).

[0040] Example 2

[0041] like Figure 8-10 As shown, a pre-filter has the same basic structure as in Embodiment 1, except that the inlet channel 11 and the outlet channel 12 are located on opposite sides of the valve body 1.

[0042] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A valve head structure of a filter cartridge type pre-filter convenient to disassemble and wash, comprising a valve shell (1), the valve shell (1) being provided with a water inlet channel (11), a water outlet channel (12), a downward filter bottle assembling port (13) and a valve shell cavity (14), characterized in that: The valve housing cavity (14) is provided with a flow channel switching component (2), which divides the valve housing cavity (14) into an inlet channel valve housing cavity (14a) and an outlet channel valve housing cavity (14b). The inlet channel valve housing cavity (14a) is connected to the inlet channel (11), and the outlet channel valve housing cavity (14b) is connected to the outlet channel (12). The flow channel switching component (2) is also provided with an assembly cavity, on which a knob (3) is detachably assembled. The knob (3) is capable of detachably assembling a filter element.

2. The valve head structure of the portable and washable prefilter cartridge according to claim 1, wherein: The flow channel switching component (2) is provided with an inlet nozzle (21) and a circumferentially arranged outlet cavity (22). Sealing elements are provided on both sides of the outlet cavity (22). Through the cooperation of the sealing elements with the inner wall of the valve shell (1), the flow channel switching component (2) is sealed to the valve shell (1), and the inlet nozzle (21) is sealed to the inlet channel (11).

3. The valve head structure of the portable and washable prefilter cartridge according to claim 1 or 2, characterized in that: The flow channel switching component (2) includes a valve housing cavity assembly and a knob assembly. The valve housing cavity assembly has a sandwich structure, which is divided into an outer cavity and an inner cavity. The outer cavity is connected to the water inlet channel (11) and the water inlet nozzle (21), and the inner cavity is connected to the water outlet cavity (22) and the water outlet channel (12). The knob assembly is provided with a snap-fit ​​structure, and the knob (3) is snap-fitted to the knob assembly.

4. The valve head structure of the easily removable and washable cartridge-type pre-filter according to claim 3, characterized in that: The knob assembly part is provided with a slide groove or slide rail, and the knob (3) is provided with a suitable slide rail or slide groove. Through the cooperation of the slide rail and the slide groove, it is rotated to the snap-fit ​​position and snapped in place.

5. The valve head structure of the easily removable and washable cartridge-type pre-filter according to claim 1 or 2, characterized in that: The inlet channel (11) and outlet channel (12) are located on the same side of the valve body (1) and share a common outlet channel seat. The outlet channel seat is provided with an inlet / outlet water diversion component (6).

6. The valve head structure of the easily removable and washable cartridge-type pre-filter according to claim 5, characterized in that: The flow channel switching component (2) is integrally molded with an inert material, which is rubber or plastic, or at least the side in contact with water is coated with an inert material, which is plastic, rubber or ceramic.

7. The valve head structure of the easily removable and washable cartridge-type pre-filter according to claim 5, characterized in that: The inlet channel (11), outlet channel (12) and filter bottle assembly port (13) are provided with isolation bushings. The isolation bushings are made of inert materials. The isolation bushings include an inlet channel isolation bushing, an outlet channel isolation bushing and an assembly port isolation bushing. They are integrally injection molded from plastic or rubber materials. Alternatively, the isolation bushings have an inert material coating on at least one side that is in contact with water. The inert material is plastic, rubber or ceramic.

8. A pre-filter, comprising a valve head, a filter bottle (4), and a filter element (5), characterized in that, The valve head structure of the easily removable and washable cartridge-type pre-filter as described in any one of claims 1-7 is adopted.

9. The pre-filter according to claim 8, characterized in that, The filter element is an external pressure filter element, including a filter element frame and a filter element. The filter element frame is provided with an assembly end, which is detachably fixed to the knob (3), and is provided with a purified water outlet, which is connected to the outlet channel valve housing cavity (14b).

10. The pre-filter according to claim 9, characterized in that, The filter element frame and the knob (3) are fixed by a snap-fit ​​structure.

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