Filter

Abstract

The utility model discloses a filter, comprising: a base assembly, which is provided with a water inlet channel, a water outlet channel, an annular inner cavity and an annular outer cavity surrounding the outer side of the annular inner cavity, the water inlet channel is communicated with the annular outer cavity, and the water outlet channel is communicated with the annular inner cavity; a water purification channel is formed in the support, the lower end of the support extends downwards to form a connector part, the connector part is inserted into the annular inner cavity, and the water purification channel is communicated with the water outlet channel; the filter element is sleeved on the bracket; the shell covers the filter element and the bracket and is connected with the base assembly; the hollow hose is placed in the water purification channel, the length of the hollow hose is larger than 1 / 2 of the length of the filter element, and the water passing area of the hollow hose is larger than the water passing area between the outer wall of the hollow hose and the water purification channel. The hollow hose is placed in the water purification channel of the bracket, so that internal stress generated by freezing and swelling of the water body can be effectively resisted, and the filter element and the shell are prevented from being damaged due to frost crack deformation.

Description

Technical Field

[0001] The utility model relates to a filter, in particular to an anti-freeze cracking filter whose water outlet is controlled by a solenoid valve. Background Art

[0002] Because the filter is filled with water, freezing in low temperatures increases its volume. Consequently, once the water freezes, it expands, increasing internal stress in the filter element and housing. Ultimately, excessive internal stress can cause deformation and damage. Furthermore, for filters that control the water output via a solenoid valve, a hose connects the valve to the filter. Due to the high water pressure at the filter outlet, the hose must withstand high pressure, making it susceptible to bursting. Consequently, existing filters are susceptible to freezing damage and hose bursting. Utility Model Content

[0003] The utility model provides a filter that effectively prevents freezing cracking and deformation, overcoming the disadvantage of being easily cracked and damaged by freezing as described in the background art. The technical solution adopted by the utility model to solve the technical problem is:

[0004] The filter includes a base assembly, the upper end of which is open, and is provided with a water inlet channel, a water outlet channel, an annular inner cavity and an annular outer cavity surrounding the outside of the annular inner cavity, the water inlet channel is connected to the annular outer cavity, and the water outlet channel is connected to the annular inner cavity; a bracket, the interior of which is provided with a clean water channel, the lower end of which extends downward to form a joint portion, the joint portion is inserted into the annular inner cavity, and the clean water channel is connected to the water outlet channel; a filter element, which covers the bracket; an outer shell, which is open at the lower end, covers the filter element and the bracket and is connected to the base assembly; during filtering, raw water enters the annular outer cavity from the water inlet channel, is filtered by the filter element and becomes clean water and flows into the clean water channel, and is then discharged from the water outlet channel; a hollow hose, the hollow hose is placed in the clean water channel, the length of the hollow hose is greater than 1 / 2 of the length of the filter element, and the water flow area of ​​the hollow hose is greater than the water flow area between its outer wall and the clean water channel.

[0005] In a preferred embodiment, the hollow hose is a soft silicone tube.

[0006] In a preferred embodiment: the base assembly is provided with a water outlet connector corresponding to its water outlet channel, and further comprises a solenoid valve, wherein the water outlet connector and the water inlet interface of the solenoid valve are detachably adapted and plugged together.

[0007] In a preferred embodiment: a boss is provided on the side wall of the water outlet joint, and a slot is provided on the side wall of the water inlet interface of the solenoid valve. The slot is L-shaped and includes an axial section and a radial section. The boss can enter the radial section along the axial section and be axially engaged with the radial section.

[0008] In a preferred embodiment, the water outlet connector is threadedly connected to the water inlet connector of the solenoid valve.

[0009] In a preferred embodiment: the water outlet channel and the water outlet joint are arranged horizontally.

[0010] In a preferred embodiment: the base assembly includes an integrally formed body and an integrally formed end cover, the water outlet channel, annular inner cavity, annular outer cavity, and water outlet joint are arranged on the body, the water inlet channel is arranged on the end cover, and the end cover is covered on the bottom of the body.

[0011] In a preferred embodiment: a partition is provided in the body to divide the internal space of the body into an upper space and a lower space, the annular inner cavity, the annular outer cavity, and the water outlet channel are provided in the upper space, and a through hole is provided on the partition.

[0012] In a preferred embodiment: the base assembly also includes a fixed diaphragm and a movable diaphragm stacked together and arranged in the lower part space of the main body, the fixed diaphragm is provided with a water hole one, and the movable diaphragm is provided with a water hole two; the base assembly also includes a rotating rod and a spring, the elastic force of the spring drives the stacked movable diaphragm and the fixed diaphragm to press against the partition, the lower end of the rotating rod is clamped with the movable diaphragm, the rotating rod passes through the partition, and the upper end of the rotating rod is clamped with the bracket; the outer shell and the main body are detachably screwed together, and the water hole two is aligned with the water hole one when in use to realize the connection between the water inlet channel and the annular outer cavity. In the process of rotating the outer shell to release the connection with the base, the outer shell drives the bracket, the rotating rod, and the movable diaphragm to rotate together until the water hole two and the water hole one are staggered to cut off the water inlet channel.

[0013] In a preferred embodiment, the movable diaphragm is located below the fixed diaphragm, and the fixed diaphragm is sleeved on the rotating rod.

[0014] Compared with the background technology, this technical solution has the following advantages:

[0015] 1. Placing a hollow hose in the bracket's clean water channel can effectively absorb the internal stress generated by the expansion of frozen water, thereby preventing the filter element and housing from cracking, deformation, and damage due to freezing. At the same time, because the water flow area of ​​the hollow hose is larger than the water flow area between its outer wall and the clean water channel, on the one hand, the stress generated by the excess liquid in the hollow hose is large, and the hollow hose can absorb more of the stress. On the other hand, the freezing of the water inside the hollow hose generates an outward expansion force, while the freezing of the water between the outer wall of the hollow hose and the clean water channel generates an inward and outward expansion force. The inward expansion force can offset the outward expansion force generated by the freezing of the water inside the hollow hose, thereby further reducing the stress inside the filter.

[0016] 2. The water outlet connector of the base assembly is directly plugged into the water inlet connector of the solenoid valve, eliminating the need for an additional hose connection, thereby avoiding the hose bursting problem and overcoming the drawback of the hose being prone to bursting as stated in the background art.

[0017] 3. The body and end cap are integrally formed, and the strength of the pipe wall of the water inlet channel and the water outlet channel is effectively guaranteed to avoid cracking and leakage in a high-pressure water environment.

[0018] 4. When replacing the filter element, the operator rotates the outer shell to loosen it from the main body. As the outer shell rotates, it simultaneously drives the bracket, rotating rod, and movable diaphragm to rotate together, causing the originally connected water hole 2 and water hole 1 to be misaligned and opened. In this way, the water inlet channel is simultaneously cut off. The operator can then directly remove the outer shell, replace the new filter element, and re-tighten the outer shell and the main body. During the tightening of the outer shell, the bracket, rotating rod, and movable diaphragm rotate in the opposite direction, once again aligning water hole 2 with water hole 1, thereby opening the water inlet channel. Therefore, when replacing the filter element of the filter of the utility model, tightening the outer shell can simultaneously open the water inlet channel, and loosening the outer shell can simultaneously cut off the water inlet channel. No additional water channel opening and closing is required, which has the advantage of simple filter element replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 A three-dimensional schematic diagram of the filter of the present invention is depicted.

[0021] Figure 2 Draws Figure 1 Schematic cross-section of the filter shown.

[0022] Figure 3 Draws Figure 1 Schematic diagram of the three-dimensional exploded view of the filter shown.

[0023] Figure 4 A schematic diagram of the assembly of the housing, bracket and filter element is drawn.

[0024] Figure 5 An exploded diagram of the housing, bracket, and filter element is shown.

[0025] Figure 6 A three-dimensional schematic diagram of the base assembly is depicted.

[0026] Figure 7 An exploded view of the base assembly is shown. DETAILED DESCRIPTION

[0027] Please refer to Figures 1 to 7The filter comprises: a base assembly 10, the upper end of which is open and is provided with a water inlet channel 11, a water outlet channel 12, an annular inner cavity 13, and an annular outer cavity 14 surrounding the outer side of the annular inner cavity. The water inlet channel 11 is connected to the annular outer cavity 14, and the water outlet channel 12 is connected to the annular inner cavity 13; a bracket 20, the interior of which is provided with a clean water channel 22, the lower end of which extends downward to form a joint portion 24, the joint portion 24 is inserted into the annular inner cavity 13, and the clean water channel 22 is connected to the water outlet channel 12; a filter element 30, which is enclosed by the bracket 20; and a housing 40, the lower end of which is open, which covers the filter element 30 and the bracket 20 and is connected to the base assembly 10. During filtration, raw water enters the annular outer cavity 14 from the water inlet channel 11, is filtered by the filter element 30, becomes clean water, and flows into the clean water channel 22. The clean water is discharged into the annular inner cavity 13 and finally discharged from the water outlet channel 12. The filter also includes a hollow hose 50, which is placed within the clean water channel 22. The length of the hollow hose 50 is greater than half the length of the filter element 30. The water flow area of ​​the hollow hose 50 is greater than the water flow area between its outer wall and the clean water channel 22, or in other words, the inner diameter of the hollow hose is greater than the sum of the distances between its outer wall and the inner wall of the clean water channel. Those skilled in the art will understand that the water flow area between the outer wall of the hollow hose 50 and the clean water channel 22 indicates that water can also flow between the outer wall of the hollow hose 50 and the clean water channel 22. In other words, this eliminates the situation where the outer diameter of the hollow hose 50 is so large that its outer wall abuts the inner wall of the clean water channel 22. The hollow hose 50 can absorb most of the stress generated by the solidification of water in the clean water channel 22, protecting the filter element from deformation and damage due to excessive stress.

[0028] Preferably, the hollow hose 50 is a soft silicone tube. It is understandable that the hollow hose 50 can be arranged along the clean water channel 22 as long as possible.

[0029] The base assembly 10 preferably has a water outlet connector 15 corresponding to its water outlet channel 12. The water outlet connector 15 is located at the end of the water outlet channel 12 for convenient water connection. The water outlet connector 15 is a connector, unlike a hose, and is inherently rigid. The base assembly 10 also includes a solenoid valve 60. The water outlet connector 15 is removably adapted to plug into the water inlet port 62 of the solenoid valve 60. Therefore, the water outlet connector 15 and the water inlet port 62 can be quickly connected. Neither is a soft structure, but rather a rigid connection.

[0030] Preferably, a boss 152 is provided on the side wall of the water outlet connector 15, and a slot 64 is provided on the side wall of the water inlet interface 62 of the solenoid valve. The slot is L-shaped, comprising an axial section and a radial section. The boss can enter the radial section along the axial section and axially engage with the radial section. It is understood that if the water outlet connector 15 and the water inlet interface 62 of the solenoid valve are screwed together, quick plug-in connection can also be achieved.

[0031] Preferably, the water outlet channel 12 and the water outlet connector 15 are arranged horizontally. In this embodiment, the water inlet channel 11 is arranged vertically.

[0032] Preferably, the base assembly 10 includes an integrally formed body 10-1 and an integrally formed end cover 10-2, the water outlet channel 12, the annular inner cavity 13, the annular outer cavity 14, and the water outlet joint 15 are arranged on the body 10-1, and the water outlet joint 15 extends laterally from the side of the body, the water inlet channel 11 is arranged on the end cover 10-2, and the end cover 10-2 covers the bottom of the body 10-1.

[0033] Preferably, a partition 16 is provided in the main body 10-1 to divide the internal space of the main body into an upper space and a lower space, the annular inner cavity 13, the annular outer cavity 14, and the water outlet channel 12 are arranged in the upper space, and a through hole is provided on the partition, which connects the annular outer cavity 14 and the lower space.

[0034] Preferably, the base assembly 10 further comprises a fixed diaphragm 10-3 and a movable diaphragm 10-4 stacked together and arranged in the lower space of the body, the fixed diaphragm is provided with a water hole 17, and the movable diaphragm is provided with a water hole 2 18; the base assembly 10 further comprises a rotating rod 10-5 and a spring 10-6, the elastic force of the spring drives the stacked movable diaphragm and the fixed diaphragm to press against the partition 16, the lower end of the rotating rod 10-5 is engaged with the movable diaphragm 10-4, the rotating rod passes through the partition, and the rotating rod is rotated. The upper end of the rotating rod is engaged with the bracket 20; the housing 40 is detachably screwed to the body 10-1. When in use, the second water hole 18 is aligned with the first water hole 17 to achieve communication between the water inlet channel 11 and the annular outer cavity 14. When the housing 40 is rotated to release the connection with the body 10-1, the housing 40 drives the bracket 20, the rotating rod 10-5, and the movable diaphragm 10-4 to rotate until the second water hole 18 and the first water hole 17 are offset, thereby cutting off the water inlet channel 11. In other words, when the filter is in use, water enters the body 10-1 through the water inlet channel 11. Since the second water hole 18 is aligned with the first water hole 17, the water enters the annular outer cavity 14 through the second water hole 18, the first water hole 17, and the through-holes in the partition 16, and is then filtered by the filter element 30. If the shell 40 is opened, the shell 40 rotates to drive the bracket 20 to rotate, and the bracket 20 drives the rotating rod 10-5 to rotate. The rotating rod finally drives the movable diaphragm 10-4 to rotate, and the water hole 2 18 is staggered with the water hole 1 17. The fixed diaphragm 10-3 blocks the water hole 2 of the movable diaphragm, cutting off the water path.

[0035] Preferably, the movable diaphragm 10-4 is located below the fixed diaphragm 10-3, and the fixed diaphragm is sleeved on the rotating rod 10-5.

Claims

1. Filters, including The base assembly has an open upper end and is provided with a water inlet channel, a water outlet channel, an annular inner cavity, and an annular outer cavity surrounding the outer side of the annular inner cavity, wherein the water inlet channel is connected to the annular outer cavity, and the water outlet channel is connected to the annular inner cavity; The bracket has a water purification channel inside, and the lower end extends downward to form a joint portion, the joint portion is inserted into the annular inner cavity, and the water purification channel is connected to the water outlet channel; A filter element, covering the bracket; A housing with an open lower end, covering the filter element and the bracket and connected to the base assembly; During filtration, raw water enters the annular outer cavity from the water inlet channel, is filtered by the filter element and becomes purified water and flows into the purified water channel, and is then discharged from the water outlet channel; It is characterized by: also including A hollow hose is placed in the clean water channel, the length of the hollow hose is greater than 1 / 2 of the length of the filter element, and the water flow area of ​​the hollow hose is greater than the water flow area between its outer wall and the clean water channel.

2. The filter according to claim 1, characterized in that: The hollow hose is a soft silicone tube.

3. The filter according to claim 1, characterized in that: The base assembly is provided with a water outlet joint corresponding to its water outlet channel, and also includes a solenoid valve. The water outlet joint and the water inlet interface of the solenoid valve are detachably adapted and plugged together.

4. The filter according to claim 3, characterized in that: A boss is provided on the side wall of the water outlet joint, and a slot is provided on the side wall of the water inlet interface of the solenoid valve. The slot is L-shaped and includes an axial section and a radial section. The boss can enter the radial section along the axial section and be axially engaged with the radial section.

5. The filter according to claim 3, characterized in that: The water outlet connector is threadedly connected to the water inlet connector of the solenoid valve.

6. The filter according to claim 3, characterized in that: The water outlet channel and the water outlet joint are arranged transversely.

7. The filter according to claim 3, characterized in that: The base assembly includes an integrally formed body and an integrally formed end cover. The water outlet channel, annular inner cavity, annular outer cavity, and water outlet joint are arranged on the body. The water inlet channel is arranged on the end cover. The end cover is covered on the bottom of the body.

8. The filter according to claim 7, characterized in that: A partition is provided in the body to divide the internal space of the body into an upper space and a lower space. The annular inner cavity, the annular outer cavity and the water outlet channel are arranged in the upper space. A through hole is provided on the partition.

9. The filter according to claim 8, characterized in that: The base assembly also includes a fixed diaphragm and a movable diaphragm stacked together and arranged in the lower part space of the main body, the fixed diaphragm is provided with a water hole 1, and the movable diaphragm is provided with a water hole 2; the base assembly also includes a rotating rod and a spring, the elastic force of the spring drives the stacked movable diaphragm and the fixed diaphragm to press against the partition, the lower end of the rotating rod is clamped with the movable diaphragm, the rotating rod passes through the partition, and the upper end of the rotating rod is clamped with the bracket; the outer shell and the main body are detachably screwed together, and the water hole 2 is aligned with the water hole 1 when in use to realize the connection between the water inlet channel and the annular outer cavity. In the process of rotating the outer shell to release the connection with the main body, the outer shell drives the bracket, the rotating rod, and the movable diaphragm to rotate together until the water hole 2 and the water hole 1 are staggered to cut off the water inlet channel.

10. The filter according to claim 9, characterized in that: The movable diaphragm is located below the fixed diaphragm, and the fixed diaphragm is sleeved on the rotating rod.

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