Pre-filter and water system

Abstract

The utility model discloses a prefilter and water consuming system relates to prefilter technical field, wherein prefilter includes filter flask, valve head, first fastener and second fastener, filter flask is equipped with water filter cavity, valve head is equipped with water inlet and water outlet, the water filter cavity is communicated with water inlet and water outlet; the first fastening piece is fixed on the filter bottle or the valve head, and the filter bottle and the valve head are fixedly connected through the matching of the first fastening piece and the second fastening piece; according to the technical scheme provided by the utility model, the valve head and the filter bottle are reliably assembled, so that the working performance of the pre-filter is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of pre-filters, and in particular to a pre-filter and a water system. Background Technology

[0002] During the production of pre-filters, the valve head and filter bottle need to be reliably assembled to ensure the working performance of the pre-filter. Utility Model Content

[0003] The main purpose of this invention is to provide a pre-filter and water system, which aims to reliably assemble the valve head and filter bottle to ensure the working performance of the pre-filter.

[0004] To achieve the above objectives, the pre-filter proposed in this utility model includes:

[0005] Filter bottle, wherein the filter bottle is provided with a water filtration chamber;

[0006] A valve head, wherein the valve head is provided with an inlet and an outlet, and the filter chamber is connected to the inlet and the outlet; and

[0007] A first fastener and a second fastener, wherein the first fastener is fixed to the filter bottle or the valve head, and the filter bottle and the valve head are fixedly connected by the cooperation of the first fastener and the second fastener.

[0008] In one embodiment, the first fastener is fixed to the valve head.

[0009] In one embodiment, the first fastener is welded and fixed to the valve head; or the first fastener is integrally formed with the valve head.

[0010] In one embodiment, the valve head includes a metal outer shell and a plastic inner liner, the plastic inner liner being fixed inside the metal outer shell, and the first fastener being fixed to the metal outer shell.

[0011] In one embodiment, the metal housing portion is made of the same material as the first fastener; or the metal housing portion is made of a different material than the first fastener.

[0012] In one embodiment, the metal outer shell is made of copper alloy, and the first fastener is made of steel or copper alloy.

[0013] In one embodiment, the first fastener is a stud and the second fastener is a nut.

[0014] In one embodiment, the filter bottle is provided with a first flange, the valve head is provided with a second flange, the first flange is provided with a first through hole, the first fastener is fixed to the second flange and passes through the first through hole, and the first flange and the second flange are fitted and abutted together.

[0015] In one embodiment, the first flange is disposed around the outer periphery of the filter bottle, and the second flange is disposed around the outer periphery of the valve head. Both the first flange and the second flange are polygonal or quasi-polygonal in shape. Multiple first fasteners and multiple first through holes are provided, with one first through hole corresponding to one first fastener. Multiple first through holes are disposed at the corners of the first flange.

[0016] This utility model also proposes a water system, including a pre-filter as described above.

[0017] The pre-filter in this utility model includes a filter bottle, a valve head, a first fastener, and a second fastener. The filter bottle has a water filtration chamber, and the valve head has an inlet and an outlet. The water filtration chamber is connected to the inlet and the outlet. The first fastener is fixed to the filter bottle or the valve head. The filter bottle and the valve head are fixedly connected by the cooperation of the first fastener and the second fastener. Thus, the first fastener and the second fastener achieve reliable assembly of the filter bottle and the valve head, thereby ensuring the working performance of the pre-filter. Attached Figure Description

[0018] 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 the structures shown in these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of an embodiment of the pre-filter provided by this utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the middle filter bottle;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the valve head.

[0022] Explanation of icon numbers:

[0023] 10. Filter bottle; 101. Filter chamber; 11. First flange; 111. First through hole; 20. Valve head; 201. Inlet; 202. Outlet; 21. Second flange; 212. Second through hole; 31. Stud; 32. Nut.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] Water systems, such as whole-house water purification systems, typically include a pre-filter. This pre-filter filters out large particles from tap water, ensuring water safety, extending the lifespan of appliances, preventing pipe blockages, and improving residents' health. The pre-filter is the first stage of coarse filtration in a whole-house water purification system. It usually contains a stainless steel filter screen and is a physical filtration device primarily used to intercept large particles larger than 40 microns, protecting downstream water safety.

[0029] Some pre-filters on the market usually have a flushing function, that is, they can be cleaned regularly to remove large particles that have been intercepted, thereby extending the service life of the pre-filter.

[0030] Please see Figures 1 to 3 In one embodiment of the present invention, the pre-filter includes a filter bottle 10 and a valve head 20 connected to the filter bottle 10. The filter bottle 10 has a water filtration chamber 101, and the valve head 20 has an inlet 201 and an outlet 202 connected to the water filtration chamber 101. The inlet 201 is connected to the water supply end, and the outlet 202 is connected to the water user end.

[0031] It should be noted that the water supply end can be a tap water pipe, a water tower, or a well water source, and the water consumption end can be a faucet, a shower head, or a drinking water outlet. This application does not make any specific restrictions on this.

[0032] This utility model proposes a pre-filter, comprising:

[0033] Filter bottle 10, wherein the filter bottle 10 is provided with a water filtration chamber 101;

[0034] Valve head 20, the valve head 20 having an inlet 201 and an outlet 202, the filter chamber 101 being connected to the inlet 201 and the outlet 202; and

[0035] A first fastener and a second fastener, wherein the first fastener is fixed to the filter bottle 10 or the valve head 20, and the filter bottle 10 and the valve head 20 are fixedly connected by the cooperation of the first fastener and the second fastener.

[0036] The pre-filter in this utility model includes a filter bottle 10, a valve head 20, a first fastener, and a second fastener. The filter bottle 10 has a water filtration chamber, and the valve head 20 has an inlet 201 and an outlet 202. The water filtration chamber is connected to the inlet 201 and the outlet 202. The first fastener is fixed to the filter bottle 10 or the valve head 20. The filter bottle 10 and the valve head 20 are fixedly connected by the cooperation of the first fastener and the second fastener. Thus, the first fastener and the second fastener achieve reliable assembly of the filter bottle 10 and the valve head 20, thereby ensuring the working performance of the pre-filter.

[0037] The existing pre-filters primarily use threaded connections between the valve head 20 and the filter bottle 10. This type of connection requires specific tooling fixtures for assembly, necessitates checking whether the valve head 20 and filter bottle 10 are properly tightened, and demands strict control over the rotational torque. Therefore, this connection method increases the assembly difficulty of the pre-filter, and the use of threaded connections also increases the material cost of the valve head 20.

[0038] Furthermore, the first fastener is fixed to the valve head 20. It is understood that the filter bottle 10 contains a filter element for filtration, making its internal structure relatively complex and costly. In contrast, the valve head 20 only has inlet and outlet structures, making its structure simpler than that of the filter bottle 10. Therefore, fixing the first fastener to the valve head 20 allows for direct replacement of the valve head 20 when the first fastener becomes fatigued or damaged due to prolonged use, thereby reducing the maintenance cost of the pre-filter chamber. Of course, in other embodiments, the first fastener can be fixed to the filter bottle 10.

[0039] Furthermore, in one embodiment, the first fastener is welded and fixed to the valve head 20; the welding process is mature, the cost is low, and the welding method has stable and reliable performance, thereby reducing the processing cost between the first fastener and the valve head 20 and improving the installation efficiency between the first fastener and the valve head 20; and when the first fastener rusts or is damaged after long-term use, the first fastener can be directly cut off and a new first fastener can be welded, so that the connection between the valve head 20 and the filter bottle 10 is always kept within a high strength range.

[0040] In another embodiment, the first fastener is integrally formed with the valve head 20. This integral forming can be achieved through casting or stamping. Both casting and stamping processes are mature, stable, reliable, and cost-effective. Furthermore, the integral forming method eliminates any connection points between the first fastener and the valve head 20, thereby increasing the connection strength between them and ultimately improving the connection strength between the valve head 20 and the filter bottle 10.

[0041] Furthermore, the valve head 20 includes a metal outer shell and a plastic inner liner. The plastic inner liner is fixed inside the metal outer shell, and the first fastener is fixed to the metal outer shell. Understandably, by making the outer shell of the valve head 20 metal, the structural strength and aesthetics of the valve head 20 are increased. However, due to the scouring effect of water flowing in through the inlet 201 and the rusting of the metal material caused by prolonged use, the metal outer shell may leach metal elements, causing heavy metal pollution to the water and thus endangering human health. Therefore, by making the inner liner of the valve head 20 plastic, the water flowing in through the inlet 201 directly contacts the plastic inner liner, thereby reducing the pollution of the water by the metal outer shell. It should also be noted that existing plastic materials have relatively high strength, therefore, they will not reduce the overall structural strength of the valve head 20. Furthermore, the first fastener is fixed to the metal outer shell. Understandably, the first fastener is generally made of metal. The two first fasteners and the metal outer shell, which are both made of metal, not only facilitate the connection and fixation of the first fastener and the metal outer shell, but also reduce the processing cost and efficiency, whether it is welded or cast into one piece.

[0042] In one embodiment, the metal housing portion is made of the same material as the first fastener. Connecting two materials of the same metal has lower costs. For example, injection molding two different materials may require two-color injection molding, which can increase mold costs. However, using the same material only requires ordinary injection molding. Furthermore, injection molding or casting of the same material into a single unit results in higher structural strength, thereby reducing the processing costs between the valve head 20 and the first fastener.

[0043] In another embodiment, the metal housing is made of a different material than the first fastener. Understandably, the metal housing serves both to ensure the structural strength of the valve head 20 and to enhance the product's appearance; while the first fastener primarily connects the valve head 20 and the filter bottle 10. Therefore, by using different materials, the first fastener and the metal housing each leverage their respective advantages, thereby improving the overall service life of the valve head 20.

[0044] Specifically, the metal outer shell is made of copper alloy, and the first fastener is made of steel or copper alloy. Understandably, copper alloy has a strong metallic feel, making the valve head 20 appear more upscale and textured, thus improving the product's aesthetics. At the same time, copper alloy has high structural strength, and compared to common metals such as iron, its performance is more stable and reliable, thereby reducing problems such as heavy metal contamination caused by rust on the metal outer shell.

[0045] Therefore, in one embodiment, the first fastener is a stud 31, and the second fastener is a nut 32. Compared to the method of setting a threaded structure on the filter bottle 10 or valve head 20, the present application provides a stud 31 on the filter bottle 10 or valve head 20, and then the filter bottle 10 and valve head 20 are fixedly connected by the cooperation of the stud 31 and the nut 32. Compared to the prior art method of using tooling fixtures to drive the valve head 20 to rotate, the present application only requires ordinary tools such as wrenches to install and fix the valve head 20 and the filter bottle 10, thereby simplifying the installation process of the valve head 20 and the filter bottle 10 and improving the installation efficiency of the pre-filter. Moreover, the stud 31 has a low cost and stable and reliable performance, thereby reducing the production and manufacturing cost of the pre-filter.

[0046] In one embodiment, the filter bottle 10 is provided with a first flange 11, and the valve head 20 is provided with a second flange 21. The first flange 11 is provided with a first through hole 111. The first fastener is fixed to the second flange 21 and passes through the first through hole 111, and the first flange 11 and the second flange 21 are in close contact. By adding the first flange 11 and the second flange 21 under the action of the first fastener and the second fastener, the contact area between the valve head 20 and the filter bottle 10 is increased, thereby reducing the possibility of shaking between the valve head 20 and the filter bottle 10, and thus reducing the loosening between the first fastener and the second fastener caused by vibration or shaking between the valve head 20 and the filter bottle 10, thereby improving the connection strength between the valve head 20 and the filter bottle 10. At the same time, the close contact between the first flange 11 and the second flange 21 also increases the airtightness between the valve head 20 and the filter bottle 10. Of course, in other embodiments, the filter bottle 10 and the valve head 20 can be joined at other locations. For example, in embodiments where the first flange 11 and the second flange 21 are not provided, the connecting port of the valve head 20 and the edge of the bottle mouth of the filter bottle 10 abut against each other.

[0047] In one embodiment, the first flange 11 is arranged around the outer periphery of the filter bottle 10, and the second flange 21 is arranged around the outer periphery of the valve head 20. Both the first flange 11 and the second flange 21 are polygonal or near-polygonal in shape. Multiple first fasteners and first through holes 111 are provided, with one first through hole 111 corresponding to one first fastener. Multiple first through holes 111 are located at the corners of the first flange 11. Understandably, the annular first flange 11 and second flange 21 cooperate with each other to further increase the contact area between the valve head 20 and the filter bottle 10, thereby further improving the structural stability and airtightness of the pre-filter. At the same time, the corners of the first flange 11 and second flange 21 have a larger free space. Therefore, placing the first fastener and the first through hole 111 at the corners facilitates the manufacturing of the pre-filter. The larger free space also facilitates the installation and mating of the first and second fasteners, thereby improving the installation efficiency between the valve head 20 and the filter bottle 10. Of course, in other embodiments, only the first flange 11 may be arranged around the opening of the filter chamber 101, or only the second flange 21 may be arranged around the valve head 20.

[0048] For example, Figure 2 and Figure 3 The outer periphery of both the first flange 11 and the second flange 21 shown is approximately square, thus having four corners. Four positioning protrusions are provided corresponding to these four corners, one-to-one. In this way, multiple corners of the second flange 21 have conformal positioning protrusions for positioning and engagement, which not only improves the positioning reliability of the valve head 20 and the filter bottle 10, but also creates multiple clearance notches for selection, facilitating the operation of prying the valve head 20. Of course, in other embodiments, the positioning protrusions may extend along the outer periphery of the first flange 11 and be connected end-to-end.

[0049] Furthermore, the diameter of the first through hole 111 is 5mm to 7mm, where 5mm to 7mm can include both 5mm and 7mm, meaning the diameter of the first through hole 111 is greater than or equal to 5mm and less than or equal to 7mm. The size of commonly used studs 31 is also roughly between 5mm and 7mm, thereby increasing the substitutability of studs 31 and reducing the daily use and maintenance costs of studs 31.

[0050] Furthermore, the shortest distance between the first through hole 111 and the outer peripheral surface of the filter bottle 10 is s, where 4mm ≤ s ≤ 7mm. This provides sufficient installation space for the wrench during the installation of the nut 32, thereby improving the user's installation and disassembly efficiency and enhancing the user experience.

[0051] Furthermore, the pre-filter also includes a filter element disposed within the filtration chamber 101. Raw water (e.g., tap water or well water) flows into the inlet 201 from an external water source and, as it flows through the filtration chamber 101, is filtered by the filter element to remove large particles. The filtered water then flows out of the pre-filter from the outlet 202 and flows to the point of use. Thus, through this process, coarse filtration of the raw water is achieved.

[0052] The filter element contains a purified water chamber. The filter element filters the water in the filtration chamber 101 and then the water flows into the purified water chamber. The valve head 20 is also provided with an annular partition plate. The annular partition plate extends along the axial direction of the filter bottle 10 and divides the valve head 20 into an inlet chamber and an outlet chamber. The inlet 201 is connected to the inlet chamber, and the outlet 202 is connected to the outlet chamber. The valve head 20 is sealed to the filter bottle 10, and the annular partition plate is sealed to the filter element. This allows the inlet chamber to be connected to the filtration chamber 101, and the purified water chamber to be connected to the outlet chamber. The water entering from the inlet 201 flows out sequentially through the inlet chamber, the filtration chamber 101, the purified water chamber, the outlet chamber, and the outlet 202.

[0053] This utility model also proposes a water system, which includes the aforementioned pre-filter. The specific structure of the pre-filter is as described in the above embodiments. Since this water system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0054] The water system includes at least the components from the pre-filter to the water outlet. For example, the water system may include household appliances such as water heaters, dishwashers, and water dispensers, as well as auxiliary components such as water pipes for domestic water use throughout the house.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pre-filter, characterized in that, include: Filter bottle, wherein the filter bottle is provided with a water filtration chamber; A valve head, wherein the valve head is provided with an inlet and an outlet, and the filter chamber is connected to the inlet and the outlet; as well as A first fastener and a second fastener, wherein the first fastener is fixed to the filter bottle or the valve head, and the filter bottle and the valve head are fixedly connected by the cooperation of the first fastener and the second fastener.

2. The pre-filter as described in claim 1, characterized in that, The first fastener is fixed to the valve head.

3. The pre-filter as described in claim 1, characterized in that, The first fastener is welded to the valve head; or The first fastener is integrally formed with the valve head.

4. The pre-filter as described in claim 1, characterized in that, The valve head includes a metal outer shell and a plastic inner liner. The plastic inner liner is fixed inside the metal outer shell, and the first fastener is fixed to the metal outer shell.

5. The pre-filter as described in claim 4, characterized in that, The metal outer casing is made of the same material as the first fastener; or The metal outer casing is made of a different material than the first fastener.

6. The pre-filter as described in claim 4, characterized in that, The metal outer shell is made of copper alloy, and the first fastener is made of steel or copper alloy.

7. The pre-filter as described in any one of claims 1 to 6, characterized in that, The first fastener is a stud, and the second fastener is a nut.

8. The pre-filter as described in claim 1, characterized in that, The filter bottle is provided with a first flange, and the valve head is provided with a second flange. The first flange is provided with a first through hole. The first fastener is fixed to the second flange and passes through the first through hole, and the first flange and the second flange are fitted together and abut against each other.

9. The pre-filter as described in claim 8, characterized in that, The first flange is disposed around the outer periphery of the filter bottle, and the second flange is disposed around the outer periphery of the valve head. Both the first flange and the second flange are polygonal or quasi-polygonal in shape. Multiple first fasteners and multiple first through holes are provided, with one first through hole corresponding to one first fastener. Multiple first through holes are located at the corners of the first flange.

10. The pre-filter as described in claim 8, characterized in that, The diameter of the first through hole is 5 mm to 7 mm; and / or The shortest distance between the first through hole and the outer peripheral surface of the filter bottle is s, where 4mm≤s≤7mm.

11. A water supply system, characterized in that, Includes the pre-filter as described in any one of claims 1 to 10.

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