Pre-filter with double-filter bottle and waterway system

Abstract

Embodiments of the present invention provide a pre-filter and water system with internal and external dual filter bottles. The pre-filter of this application employs a dual filter bottle design, ensuring that even in special circumstances such as water hammer effects that could cause leakage or cracking of the internal transparent filter bottle, or low-temperature freezing environments, the external filter bottle remains sealed and provides protection, withstanding pipeline water pressure. This effectively prevents tap water from overflowing and avoids property damage to the user due to pre-filter failure.

Description

Technical Field

[0001] This invention relates to the field of pipeline water purification technology, and more specifically, to a pre-filter and water system with internal and external dual filter bottles. Background Technology

[0002] Traditional pre-filters typically consist of a valve body, a transparent filter bottle connected to the valve body at the top, a drain sealing assembly connected to the bottom of the transparent filter bottle, and a drain ball valve connected to the drain sealing assembly. A filter screen assembly is installed inside the transparent filter bottle. During use, water flows from the inlet of the valve body into the gap between the transparent filter bottle and the filter screen. After being filtered by the filter screen, it flows into the center of the filter screen frame, and then from the center of the filter screen frame to the outlet of the valve body. Users can observe the filtration effect through the transparent filter bottle, making the filtration process visible. However, in special circumstances in household plumbing (such as water hammer, low-temperature freezing, etc.), leaks, cracks, and even bursts can occur at the transparent filter bottle of the pre-filter, leading to water damage to the user's home and causing significant property loss.

[0003] Therefore, this application is hereby submitted. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-filter and water system with internal and external dual filter bottles, which can reduce the impact on users in the event of filter bottle cracking or explosion.

[0005] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a pre-filter with inner and outer dual filter bottles, comprising a valve body, a filter element assembly, an inner filter bottle, an outer filter bottle, a connector, and a drain valve assembly. The valve body includes an inlet chamber, an outlet chamber, and a first connecting ring. The inlet chamber is provided with an inlet and a first connecting port. The outlet chamber is provided with an outlet and a second connecting port. The first connecting port and the second connecting port are both located inside the first connecting ring. The inner surface and the outer surface of the first connecting ring are respectively provided with a first internal thread and a first external thread. The purified water outlet of the filter element assembly is installed on the second communication port, and a first connector is provided at the end of the filter element assembly away from the purified water outlet; The inner filter bottle has a second external thread that mates with the first internal thread at one end and a first sealing inner hole at the other end. A water flow channel is provided between the inner filter bottle and the filter element assembly. The external filter bottle has a second internal thread at one end that matches the first external thread, and a second sealing inner hole at the other end. The connector has a water flow channel in the middle, and the connector passes through the first sealing inner hole and the second sealing inner hole. One end of the connector located inside the inner filter bottle is provided with a second connector that is connected to the first connector. The other end of the connector located outside the inner filter bottle is connected to the drain channel of the drain valve assembly. The first connector is provided with a water passage hole that connects the water flow channel and the drain channel.

[0006] In an optional embodiment, an inner sealing surface is provided on the inner side of the first connecting ring, and a first sealing groove adapted to the inner sealing surface is provided on the second external thread side, and an inner filter bottle seal is provided in the first sealing groove.

[0007] In an optional embodiment, an outer sealing surface is provided on the outer side of the first connecting ring, and a second sealing groove adapted to the outer sealing surface is provided on one side of the second internal thread, and an outer filter bottle seal is provided in the second sealing groove.

[0008] In an optional embodiment, the outer wall of the second connector is provided with a slot, and the inner wall of the first connector is provided with a retaining ring that matches the slot.

[0009] In an optional embodiment, the second connector is further provided with a limiting ring, which is located on the side of the retaining ring near the drain valve assembly, and the limiting ring abuts against the end face of the first sealing inner hole away from the drain valve assembly.

[0010] In an optional embodiment, a third sealing groove is provided on the outer surface of the connector, and a connector seal is provided between the third sealing groove and the second sealing inner hole.

[0011] In an optional embodiment, a retaining ring groove is provided on the outer surface of the connecting body. The retaining ring groove is located on the side of the third sealing groove near the drain valve assembly. A retaining ring is provided in the retaining ring groove to cooperate with the limiting ring to fix the inner filter bottle and the outer filter bottle on the side near the drain valve assembly.

[0012] In an optional embodiment, the connector is provided with a third internal thread on the side near the drain valve assembly, and the drain channel of the drain valve assembly is provided with a third external thread that mates with the third internal thread.

[0013] In an optional embodiment, both the inner and outer filter bottles are transparent filter bottles.

[0014] Secondly, the present invention provides a water system including a pre-filter with internal and external dual filter bottles as described in any of the foregoing embodiments.

[0015] The beneficial effects of the pre-filter and water system with internal and external dual filter bottles provided in this embodiment of the invention include: the design of internal and external dual filter bottles in this application allows the external filter bottle to remain sealed and play a protective role in special circumstances such as water hammer effect or low temperature freezing environment that may cause leakage or cracking of the internal transparent filter bottle, and withstand the water pressure of the pipeline, effectively protecting the tap water from overflowing and preventing property damage to users due to the failure of the pre-filter. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional view of the pre-filter with internal and external dual filter bottles in the water filtration state provided in this embodiment; Figure 2 A cross-sectional view of the pre-filter with internal and external dual filter bottles in the sewage discharge state provided in this embodiment; Figure 3 This is an exploded view of the pre-filter with internal and external dual filter bottles provided in this embodiment; Figure 4 This is a schematic diagram of the valve body structure; Figure 5 This is a schematic diagram of the internal filter bottle. Figure 6 This is a schematic diagram of the external filter bottle. Figure 7 This is a schematic diagram of the connector structure; Figure 8 This is a schematic diagram of the drain valve assembly.

[0018] Icons: 1-Valve body; 101-Inlet; 102-Inner sealing surface; 103-First internal thread; 104-First external thread; 105-Outlet; 106-Liquid outlet chamber; 107-Outer sealing surface; 2-Filter element assembly; 3-Inner filter bottle seal; 4-Inner filter bottle; 401-Second external thread; 402-First sealing inner hole; 403-First sealing groove; 5-Outer filter bottle seal; 6-Outer filter bottle; 601-Second internal thread; 602-Second sealing inner hole; 603-Second sealing groove; 7-Connector; 701-Second connector; 702-Limiting ring; 703-Third sealing groove; 704-Snap ring groove; 705-Third internal thread; 8-Connector seal; 9-Snap ring; 10-Drain valve assembly; 1001-Third external thread. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0025] This invention provides a pre-filter with internal and external dual filter bottles, such as... Figure 1-8 As shown, it includes a valve body 1, a filter element assembly 2, an inner filter bottle 4, an outer filter bottle 6, a connector 7, and a drain valve assembly 10. The valve body 1 includes an inlet chamber, an outlet chamber 106 and a first connecting ring. The inlet chamber is provided with an inlet 101 and a first connecting port. The outlet chamber 106 is provided with an outlet 105 and a second connecting port. The first connecting port and the second connecting port are both located inside the first connecting ring. The inner surface and the outer surface of the first connecting ring are respectively provided with a first internal thread 103 and a first external thread 104. The purified water outlet of the filter element assembly 2 is installed on the second communication port, and a first connector is provided at the end of the filter element assembly 2 away from the purified water outlet; The inner filter bottle 4 has a second external thread 401 that mates with the first internal thread 103 at one end and a first sealing inner hole 402 at the other end. A water flow channel is provided between the inner filter bottle 4 and the filter element assembly 2. The external filter bottle 6 has a second internal thread 601 that is adapted to the first external thread 104 at one end and a second sealing inner hole 602 at the other end; The connector 7 has a water flow channel in the middle. The connector 7 passes through the first sealing inner hole 402 and the second sealing inner hole 602. One end of the connector 7 located inside the inner filter bottle 4 is provided with a second connector 701 that is connected to the first connector. The other end of the connector 7 located outside the inner filter bottle 4 is connected to the drain channel of the drain valve assembly 10. The first connector is provided with a water passage hole that connects the water flow channel and the drain channel.

[0026] This application adopts a dual-filter bottle design, which ensures that even in special circumstances such as water hammer effect or low-temperature freezing environment that may cause leakage or cracking of the inner transparent filter bottle, the outer filter bottle 6 can still remain sealed and play a protective role, and withstand the water pressure of the pipeline, effectively protecting the tap water from overflowing and preventing property damage to users due to the failure of the pre-filter.

[0027] In an optional embodiment, an inner sealing surface 102 is provided on the inner side of the first connecting ring, and a first sealing groove 403 adapted to the inner sealing surface 102 is provided on one side of the second external thread 401, and an inner filter bottle seal 3 is provided in the first sealing groove 403.

[0028] In an optional embodiment, an outer sealing surface 107 is provided on the outer side of the first connecting ring, and a second sealing groove 603 adapted to the outer sealing surface 107 is provided on one side of the second internal thread 601, and an outer filter bottle seal 5 is provided in the second sealing groove 603.

[0029] In an optional embodiment, the outer wall of the second connector 701 is provided with a slot, and the inner wall of the first connector is provided with a retaining ring that matches the slot.

[0030] In an optional embodiment, the second connector 701 is further provided with a limiting ring 702, the limiting ring 702 being located on the side of the retaining ring closer to the drain valve assembly 10, and the limiting ring 702 abutting against the end face of the first sealing inner hole 402 away from the drain valve assembly 10.

[0031] In an optional embodiment, a third sealing groove 703 is provided on the outer surface of the connector 7, and a connector seal 8 is provided between the third sealing groove 703 and the second sealing inner hole 602.

[0032] In an optional embodiment, the outer surface of the connector 7 is provided with a snap ring groove 704, the snap ring groove 704 is located on the side of the third sealing groove 703 near the drain valve assembly 10, and a snap ring 9 is provided in the snap ring groove 704 to cooperate with the limiting ring 702 to fix the inner filter bottle 4 and the outer filter bottle 6 on the side near the drain valve assembly 10.

[0033] In an optional embodiment, the connector 7 is provided with a third internal thread 705 on the side near the drain valve assembly 10, and the drain channel of the drain valve assembly 10 is provided with a third external thread 1001 that mates with the third internal thread 705.

[0034] In an optional embodiment, both the inner filter bottle 4 and the outer filter bottle 6 are transparent filter bottles, and the double transparent filter bottle design can also achieve a visual display of the filtration process.

[0035] In this application, a pre-filter with internal and external dual filter bottles is provided with an inlet 101 and an outlet 105 on the valve body 1, which are sealed to the household pipeline. The valve body 1 is provided with a first internal thread 103 and a first external thread 104, which are threaded to the internal filter bottle 4 and the external filter bottle 6 respectively. At the same time, the internal filter bottle seal 3 and the external filter bottle seal 5 play a sealing role. The valve body 1 is provided with a second connecting port. The filtered water enters the outlet chamber 106 through the second connecting port and then enters the end of the household pipeline. The internal filter bottle 4 is provided with a first sealing groove 403, which is sealed and connected with the internal filter bottle seal 3. The lower end of the internal transparent filter bottle 4 is provided with a first sealing inner hole 402, which is sealed and connected with the third sealing groove 703 on the connecting body seal 8 and the connecting body 7. The external filter bottle 6 is provided with a second sealing groove 603, which is sealed and connected with the external filter bottle seal 5. The lower end of the external filter bottle 6 is provided with a first sealing inner hole 402, which is sealed and connected with the third sealing groove 703 on the connecting body seal 8 and the connecting body 7. The second sealing inner hole 602 is sealed and connected with the sealing part 8 and the third sealing groove 703 on the connecting body 7. The connecting body 7 is provided with a second connecting part 701, which is connected to the filter element assembly 2. The second connecting part 701 is provided with a limiting ring 702, such as a flange, which is matched with the upper end face of the first sealing inner hole 402. A snap ring groove 704 is provided at the lower end of the connecting body 7. The snap ring 9 and the snap ring groove 704 lock the inner filter bottle 4 and the outer filter bottle 6 into a whole. The lower end of the connecting body 7 is also provided with a third internal thread 705, which is sealed and connected with the third external thread 1001 on the drain valve assembly 10. When the household pipeline encounters special circumstances (such as water hammer effect, low temperature freezing, etc.), it may cause leakage, cracking and bursting of the inner filter bottle 4 at the pre-filter, resulting in tap water flooding the user's house and causing significant property damage to the user. At this point, the external filter bottle 6 in this application can both prevent tap water from overflowing and protect the pre-filter from leakage.

[0036] The present invention also provides a water system including a pre-filter with internal and external dual filter bottles as described in any of the foregoing embodiments.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A pre-filter with inner and outer dual filter bottles, characterized in that, Includes valve body, filter element assembly, inner filter bottle, outer filter bottle, connector, and drain valve assembly. The valve body includes an inlet chamber, an outlet chamber, and a first connecting ring. The inlet chamber is provided with an inlet and a first connecting port. The outlet chamber is provided with an outlet and a second connecting port. The first connecting port and the second connecting port are both located inside the first connecting ring. The inner surface and the outer surface of the first connecting ring are respectively provided with a first internal thread and a first external thread. The purified water outlet of the filter element assembly is installed on the second communication port, and a first connector is provided at the end of the filter element assembly away from the purified water outlet; The inner filter bottle has a second external thread that mates with the first internal thread at one end and a first sealing inner hole at the other end. A water flow channel is provided between the inner filter bottle and the filter element assembly. The external filter bottle has a second internal thread at one end that matches the first external thread, and a second sealing inner hole at the other end. The connector has a water flow channel in the middle, and the connector passes through the first sealing inner hole and the second sealing inner hole. One end of the connector located inside the inner filter bottle is provided with a second connector that is connected to the first connector. The other end of the connector located outside the inner filter bottle is connected to the drain channel of the drain valve assembly. The first connector is provided with a water passage hole that connects the water flow channel and the drain channel.

2. The pre-filter with inner and outer dual filter bottles according to claim 1, characterized in that, The first connecting ring has an inner sealing surface on its inner side, and the second external thread has a first sealing groove that is adapted to the inner sealing surface. An inner filter bottle seal is provided in the first sealing groove.

3. The pre-filter with inner and outer dual filter bottles according to claim 1, characterized in that, The first connecting ring has an outer sealing surface on its outer side, and the second internal thread side has a second sealing groove that is adapted to the outer sealing surface. An external filter bottle seal is provided in the second sealing groove.

4. The pre-filter with inner and outer dual filter bottles according to claim 1, characterized in that, The outer wall of the second connector is provided with a slot, and the inner wall of the first connector is provided with a retaining ring that matches the slot.

5. The pre-filter with inner and outer dual filter bottles according to claim 4, characterized in that, The second connector is also provided with a limiting ring, which is located on the side of the retaining ring near the drain valve assembly. The limiting ring abuts against the end face of the first sealing inner hole on the side away from the drain valve assembly.

6. The pre-filter with inner and outer dual filter bottles according to claim 5, characterized in that, A third sealing groove is provided on the outer surface of the connector, and a connector sealing element is provided between the third sealing groove and the second sealing inner hole.

7. The pre-filter with inner and outer dual filter bottles according to claim 6, characterized in that, The outer surface of the connector is provided with a snap ring groove, which is located on the side of the third sealing groove near the drain valve assembly. The snap ring groove is provided with a snap ring that can cooperate with the limiting ring to fix the inner filter bottle and the outer filter bottle on the side near the drain valve assembly.

8. The pre-filter with inner and outer dual filter bottles according to claim 1, characterized in that, The connector has a third internal thread on the side near the drain valve assembly, and the drain channel of the drain valve assembly has a third external thread that mates with the third internal thread.

9. The pre-filter with inner and outer dual filter bottles according to claim 1, characterized in that, Both the inner and outer filter bottles are transparent.

10. A waterway system, characterized in that, Includes the pre-filter with internal and external dual filter bottles as described in any one of claims 1-9.

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