A stainless steel filter

Abstract

This invention relates to the field of water purification devices and discloses a stainless steel filter, comprising a cover and a cylinder connected to each other. The two ends of the cover are an inlet pipe and an outlet pipe, respectively. A filter assembly is installed inside the cylinder, dividing the cylinder into a pre-filter chamber connected to the inlet pipe and a post-filter chamber connected to the outlet pipe. A drain pipe communicating with the pre-filter chamber is provided at the lower end of the cylinder. A drain cover is detachably installed on the drain pipe. A support member is connected to the drain cover, which passes through the pre-filter chamber and overlaps with the cover. A cleaning part that elastically abuts against the filter assembly is rotatably installed on the support member. A drive part is provided between the upper end of the cleaning part and the cover, which drives the cleaning part to rotate with the water flow from the inlet pipe. The drive part includes several fan blades arranged circumferentially above the cleaning part, with the fan blades forming an oblique angle with the water flow direction.

Description

Technical Field

[0001] This invention relates to the field of water purification devices, and more particularly to a stainless steel filter. Background Technology

[0002] In daily life, when tap water reaches each household through the pipeline network, it passes through many pipes. The pipes contain a lot of impurities such as silt, rust, and floating matter, which can affect the quality of drinking water. Based on the above reasons, Chinese Patent No. CN202526975U discloses a pre-filter, including a cover, a cylinder, and a filter assembly. One side of the cover is a water inlet pipe connector, and the other side is a water outlet pipe connector. The lower end of the cover is connected to the cylinder, and a drain port is set at the lower end of the cylinder. The filter assembly is fixed inside the cylinder. The filter assembly can filter silt, rust, and large particles to improve water quality.

[0003] In the aforementioned patent, opening the drain outlet can only use the flow of tap water to discharge the sediment in the filter assembly. The force between the tap water and the filter assembly is not strong, resulting in a certain amount of sediment remaining in the filter assembly and being unable to be discharged.

[0004] Based on the above problems, Chinese Patent No. CN208230122U discloses a water filter cup purification device. The difference between this device and the aforementioned patent is that a first ball valve is installed at the drain outlet, a second ball valve is installed at the inlet pipe, and a third ball valve is installed at the outlet pipe. The second ball valve can control the inflow and outflow of raw water. When cleaning the receiving chamber, the second ball valve is closed first, so that the raw water entering the receiving chamber has a stronger force, making it easier to clean. The third ball valve is installed at the outlet pipe to control the inflow and outflow of filtered water. When cleaning the receiving chamber, the third ball valve is closed to prevent water backflow.

[0005] The above structure has the following shortcomings: 1. It requires three ball valves, which need to be switched back and forth during cleaning, resulting in inconvenience in operation; 2. Impurities will continuously adhere to the filter components, and these deposited impurities are more difficult to remove. Simply flushing with water is insufficient to remove impurities from the filter components, which will quickly reduce the filtration speed of the filter components, leading to slow water output or even blockage; 3. During normal use, the filter components cannot automatically clean the impurities on them, resulting in a decrease in the filtration speed of the filter components, a reduction in the amount of water output, and ultimately a continuous reduction in the cleaning cycle. Summary of the Invention

[0006] This invention addresses the drawback of existing filter components, where impurities are difficult to remove, leading to a continuous reduction in cleaning cycles. It provides a stainless steel filter that can remove impurities from the filter component during use or cleaning.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0008] A stainless steel filter includes a cover and a cylinder connected to each other. The two ends of the cover are an inlet pipe and an outlet pipe, respectively. A filter assembly is installed inside the cylinder, dividing the cylinder into a pre-filter chamber connected to the inlet pipe and a post-filter chamber connected to the outlet pipe. A drain pipe communicating with the pre-filter chamber is provided at the lower end of the cylinder. A drain cover is detachably installed on the drain pipe. A support member is connected to the drain cover, which passes through the pre-filter chamber and overlaps with the cover. A cleaning part that elastically abuts against the filter assembly is rotatably installed on the support member. A drive part is provided between the upper end of the cleaning part and the cover, which drives the cleaning part to rotate with the water flow from the inlet pipe. The drive part includes several fan blades arranged circumferentially above the cleaning part, with the fan blades forming an oblique angle with the direction of water flow.

[0009] By adopting the above solution, a support component, a cleaning section, and a drive section are added. The support component supports the cleaning section, allowing it to rotate smoothly relative to the support component. The drive section, configured as a fan blade, rotates as water flows through the inlet, thus driving the cleaning section to rotate and clean the inner wall of the filter assembly. This structure provides a dual cleaning effect: during normal use, as long as water enters the filter assembly through the inlet, the fan blade rotates, driving the cleaning section to clean the inner wall of the filter assembly, preventing fine impurities from continuously adhering to the filter assembly. This significantly slows down the filtration rate reduction of the filter assembly and extends the cleaning cycle. Furthermore, simply opening the drain cover allows the support component and the cleaning section to move up and down. The cleaning section can remove all impurities deposited at the bottom of the filter assembly and also clean the inner wall of the drain pipe, significantly improving cleaning efficiency. Therefore, this filter can significantly extend the cleaning cycle and significantly improve cleaning efficiency.

[0010] Preferably, a horizontal plate is provided inside the cover body and a water pipe with a vertical water inlet protruding from the lower end of the horizontal plate is provided. The support component includes a support pipe that is inserted into the water pipe, a connecting rod that is vertically provided on the inner wall of the support pipe, and a support rod that is fixed at both ends to the connecting rod and the drain cover respectively. The fan blade is rotatably provided inside the support pipe.

[0011] Using the above solution, the water pipe can change the direction of water flow. The support pipe included in the support component serves to accommodate the fan blades. Water flows through the gaps between the fan blades to increase water pressure, thereby boosting the pressure and driving the fan blades to increase their rotation speed to increase the cleaning efficiency of the cleaning section.

[0012] Preferably, the cleaning unit includes a rotating sleeve fitted outside the support rod, a bearing disposed between the rotating sleeve and the support rod, and bristles disposed on the outer wall of the rotating sleeve along its axial direction, with fan blades disposed on the outer ring wall of the rotating sleeve.

[0013] Using the above solution, the rotating sleeve is smoothly mounted on the support rod via a bearing, and the fan blades are mounted on the rotating sleeve. The rotation of the fan blades drives the bristles to rotate around the rotating sleeve, thereby cleaning the entire filter assembly.

[0014] Preferably, a dirt baffle that expands downward into a cone shape and whose lower end face extends beyond the rotating sleeve is provided on the support rod above the fan blade.

[0015] With the above solution, the baffle plate is set as a cone surface, which will not retain water. The baffle plate blocks the rotating sleeve, which can prevent impurities from falling into the gap between the rotating sleeve and the support rod, and avoid the problem of the rotating sleeve getting stuck due to impurities.

[0016] Preferably, the bristles are spaced circumferentially around the rotating sleeve in 1 to 4 groups.

[0017] Using the above method, it is more appropriate to set the number of bristles to 4 or less. Too many bristles will increase the rotational resistance and reduce the space for impurity deposition.

[0018] Preferably, the horizontal plate has a flexible lifting and lowering plug that can open or block the water pipe. An elastic element is provided between the plug and the upper end of the cover to drive the plug to block the water pipe. A top rod is provided at the end of the connecting rod away from the support rod to press the plug and open the water pipe after the drain cover is connected to the drain pipe.

[0019] Using the above solution, the sealing device can open or close the water pipe, changing the flow rate of water entering the water pipe. After removing the drain cover or the entire cylinder, the top cover detaches from the seal, and the seal blocks the water pipe under the action of the elastic element, which can reduce water waste. At this time, if the removed part is the drain cover, the inner wall of the cylinder and the drain pipe can be cleaned using the cleaning unit; if the removed part is the entire cylinder, the entire cylinder can be thoroughly cleaned; after the drain cover is completely sealed, the distance between the seal and the drain pipe is the largest, and the water flow through the water pipe is the smoothest.

[0020] Preferably, the lower end of the seal has a recessed slot for inserting a push rod.

[0021] Using the above solution, the slot is used to position the push rod and prevent it from slipping.

[0022] Preferably, an installation tube with an inner diameter larger than that of the seal is provided on the upper end face of the cover, and an installation cap is detachably provided on the installation tube. The two ends of the elastic element are fixedly connected to the seal and the installation cap, respectively.

[0023] By adopting the above scheme, the installation tube and the installation cover can reduce the difficulty of installing the sealing and elastic components. After installing the elastic components and the sealing and the installation cover, and then matching the installation cover with the installation tube, the sealing can be installed inside the cover body.

[0024] Preferably, the support rod is detachably connected to the drain cover.

[0025] The advantage of using the above solution, which allows for a detachable connection between the support rod and the drain cover, is that it facilitates production and also makes it easier to thoroughly clean both components.

[0026] Preferably, the filter assembly is a rigid filter cartridge, with one end of the drain pipe extending into the cartridge body and the end folded outward to form a cap that is sealed and inserted into the bottom of the filter cartridge, and the other end of the drain pipe extending out of the cartridge body and detachably connected to the drain cap.

[0027] Using the above solution, a cap is installed at one end of the drain pipe to block the filter cartridge and divide the inside and outside of the filter cartridge into a pre-filter chamber and a post-filter chamber. The advantage of this design is that after removing the cartridge body and pulling out the filter cartridge, it is easy to clean the filter cartridge and the cartridge body.

[0028] This invention, by adopting the above technical solutions, has significant technical effects:

[0029] 1. The filter incorporates a support component, a cleaning section, and a drive section. The support component supports the cleaning section, allowing it to rotate smoothly relative to the support. The drive section, configured as a fan blade, rotates with the flow of water from the inlet, thus driving the cleaning section to rotate and clean the inner wall of the filter assembly. This structure provides a dual cleaning effect: during normal use, as long as water enters the filter assembly through the inlet, the fan blade rotates, driving the cleaning section to clean the inner wall of the filter assembly, preventing fine impurities from adhering to it and significantly slowing down the filtration rate reduction, thus extending the cleaning cycle. Furthermore, simply opening the drain cover allows the support component and cleaning section to move up and down. The cleaning section can remove all impurities deposited at the bottom of the filter assembly and also clean the inner wall of the drain pipe, significantly improving cleaning efficiency. Therefore, this filter can significantly extend the cleaning cycle and significantly improve cleaning efficiency.

[0030] 2. A plug is added to the water pipe. The plug can open or close the water pipe, changing the flow rate of water entering the water pipe. After removing the drain cover or the entire cylinder, the top cover detaches from the plug. The plug, under the action of the elastic element, blocks the water pipe, which can reduce water waste. At this time, if the removed part is the drain cover, the inner wall of the cylinder and the drain pipe can be cleaned using the cleaning section; if the removed part is the entire cylinder, the entire cylinder can be thoroughly cleaned; after the drain cover is completely sealed, the distance between the plug and the drain pipe is the largest, and the water flow through the water pipe is the smoothest. Attached Figure Description

[0031] Figure 1 This is a front view of a stainless steel filter according to Example 1;

[0032] Figure 2 yes Figure 1 A sectional view of AA;

[0033] Figure 3 This is an isometric view of the support member and the drain cover in Embodiment 1 when they are connected;

[0034] Figure 4This is an isometric view of the drive unit and cleaning unit of Embodiment 1;

[0035] Figure 5 This is a cross-sectional view of a stainless steel filter according to Example 2;

[0036] Figure 6 This is a cross-sectional view of a stainless steel filter in Embodiment 2 when the drain cover, support, drive unit, and cleaning unit are removed;

[0037] Figure 7 This is an isometric view of the connection between the support and the drain cover in Example 2.

[0038] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Cover; 101. External thread section; 2. Cylinder; 3. Connecting ring; 4. Drain cover; 5. Inlet pipe; 6. Outlet pipe; 7. Horizontal plate; 8. Water passage pipe; 9. Filter cylinder; 10. Pre-filter chamber; 11. Post-filter chamber; 12. Drain pipe; 13. Cover; 14. Support component; 141. Support pipe; 142. Connecting rod; 143. Support rod; 15. Rotating sleeve; 16. Brush bristles; 17. Fan blade; 18. Blotting plate; 19. Mounting pipe; 20. Mounting cover; 21. Seal; 22. Elastic component; 23. Top rod; 24. Slot; 25. Bearing; 26. Connecting block; 27. Threaded connecting pipe. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0040] Example 1

[0041] A stainless steel filter, reference Figures 1-2 As shown, it includes a cover 1 and a cylinder 2. The two ends of the cover 1 are respectively provided with an inlet pipe 5 and an outlet pipe 6. A horizontal plate 7 is provided inside the cover 1. The upper chamber of the horizontal plate 7 is connected to a metal pipe, and the lower chamber of the horizontal plate 7 is connected to the outlet pipe 6. A water pipe 8 is provided with a downward protrusion at the center of the horizontal plate 7. An external threaded section 101 extends from the lower end of the cover 1 outside the water pipe 8. A connecting ring 3 with an internal thread is provided at the upper end of the cylinder. After the connecting pipe is connected to the external threaded section 101, the two are sealed together by a sealing ring.

[0042] A filter assembly is fixed inside the cylinder 2. The filter assembly is a rigid filter cylinder 9. Filter holes are evenly distributed on the cylinder wall of the filter cylinder 9. The upper end of the filter cylinder 9 is sealed and fitted outside the water pipe 8. A drain pipe 12 is provided at the lower end of the cylinder 2. The end of the drain pipe 12 inside the cylinder 2 extends outward to form a cover 13 that can be sealed and inserted into the bottom of the filter cylinder 9. The end of the drain pipe 12 outside the cylinder 2 extends to form a threaded connecting pipe 27. A drain cover 4 is threadedly connected to the threaded connecting pipe 27. After the filter cylinder 9 is installed, the inside of the cylinder 2 is divided into a pre-filter chamber 10 inside the filter cylinder 9 and a post-filter chamber 11 between the cylinder 2 and the filter cylinder 9. The pre-filter chamber 10 is connected to the water inlet pipe 5, and the post-filter chamber 11 is connected to the water outlet pipe 6.

[0043] A support member 14 is connected to the drain cover 4 and overlaps with the water pipe 8. A cleaning part that elastically abuts against the filter assembly is rotatably mounted on the support member 14. Figure 3 As shown, the support member 14 includes a support tube 141, a connecting rod 142, and a support rod 143. The connecting rod 142 is arranged in a cross shape inside the support tube 141, and its ends are integrally connected to the inner wall of the support tube 141. The support tube 141 is sealed around the flow pipe until the end of the flow pipe abuts against the connecting rod 142. Both ends of the support rod 143 are fixedly connected to the center of the connecting rod 142 and the drain cover 4, respectively. Figure 4 As shown, the cleaning unit includes a rotating sleeve 15 rotatably mounted outside the support rod 143. A bearing 25 is provided between the rotating sleeve 15 and the support rod 143 to improve the smoothness and stability of the rotation of the rotating sleeve 15. Brush bristles 16 are arranged axially on the outer ring wall of the rotating sleeve 15. The brush bristles 16 are arranged in 1 to 4 sets around the circumference of the rotating sleeve 15. In this embodiment, one set is provided. The brush bristles 16 extend into the support tube 141 at the end of the rotating sleeve 15 away from the drain cover 4. The brush bristles 16 are located outside the support tube 141. The rotating sleeve 15 is provided inside the support tube 141. The drive unit that drives the rotating sleeve 15 to rotate consists of several fan blades 17 arranged circumferentially on the outer wall of the rotating sleeve 15 at an angle to the direction of water flow from the water pipe 8. When the water from the drain pipe passes through the water pipe 8, it directly impacts the fan blades 17, causing them to rotate. The rotation of the fan blades 17 drives the rotating sleeve 15 to rotate, thereby causing the bristles 16 to act on the inner wall of the filter cartridge 9, sweeping away impurities on the inner wall of the filter cartridge 9. The above arrangement can clean the filter cartridge 9 throughout the entire working cycle of the filter, delaying the cleaning cycle of filter cartridge 9 clogging.

[0044] To prevent the rotating sleeve 15 from getting stuck, a baffle plate 18 that expands downward into a cone shape and whose lower end face exceeds the rotating sleeve 15 is provided on the support rod 143 above the fan blade 17. The inclined surface of the baffle plate 18 can quickly direct all the water to the fan blade 17 and prevent the risk of impurities in the water falling into the rotating sleeve 15.

[0045] For ease of production and cleaning, the support rod 143 is detachably mounted on the drain cover 4. A connecting block 26 protrudes from the bottom of the drain cover 4, and the end of the support rod 143 is press-fitted into or threadedly connected to the connecting block 26.

[0046] During normal use, as long as water enters the filter assembly through the inlet, the fan blade 17 will rotate to drive the cleaning unit to clean the inner wall of the filter assembly, preventing fine impurities from adhering to the filter assembly. This significantly slows down the filtration rate reduction of the filter assembly and extends the cleaning cycle. In addition, simply opening the drain cover 4 allows the support 14 and the cleaning unit to move up and down, and the cleaning unit can clean out all the impurities deposited at the bottom of the filter assembly.

[0047] Example 2

[0048] This embodiment is based on Embodiment 1, and refers to... Figures 5-7 As shown, a T-shaped elastic seal 21 that can be opened or blocked on the water pipe 8 is elastically raised and lowered on the horizontal plate 7. For easy installation, a threaded mounting tube 19 with an inner diameter larger than the seal 21 protrudes from the upper end of the cover 1. A mounting cover 20 is threaded onto the mounting tube 19. A sealing ring is provided inside the mounting cover 20. An elastic element 22 is provided at both ends and fixed to both. The elastic element 22 is a tension spring or spring. During installation, the mounting cover 20, the elastic element 22 and the sealing plug 21 are connected as one unit. Then, the elastic element 22 is placed into the cover body 1 and the mounting cover 20 is screwed together with the mounting cover 20. At the end of the connecting rod 142 away from the support rod 143, there is a top rod 23 that pushes against the sealing plug 21 to open the water pipe 8 after the drain cover 4 is screwed with the drain pipe 12. In order to prevent the top rod 23 from slipping, there is a slot 24 at the bottom of the sealing plug 21 for the top rod 23 to be inserted. The slot 24 is greater than or equal to the top rod 23.

[0049] A plug 21 is added to the water pipe 8. The plug 21 can open or close the water pipe 8, changing the flow rate of water entering the water pipe 8. After removing the drain cover 4, refer to... Figure 6 As shown, the top cover detaches from the seal 21, and the seal 21 blocks the water pipe 8 under the action of the elastic element 22, which can reduce water waste during the cleaning process. When cleaning, pulling or rotating the support rod 143 can use the brush bristles to clean the inner wall of the cylinder 2 and the drain pipe 12. If the removed cylinder 2 is the whole cylinder, the whole cylinder 2 can be thoroughly cleaned. After the drain cover 4 is installed, the top rod presses the seal to the maximum distance between the seal 21 and the drain pipe 12, and the water flows through the water pipe 8 most smoothly.

Claims

1. A stainless steel filter, comprising a cover (1) and a cylinder (2) connected to each other, wherein the two ends of the cover (1) are an inlet pipe (5) and an outlet pipe (6) respectively, and a filter assembly is disposed inside the cylinder (2), characterized in that: The filter assembly divides the interior of the cylinder (2) into a pre-filter chamber (10) connected to the inlet pipe (5) and a post-filter chamber (11) connected to the outlet pipe (6). A drain pipe (12) connected to the pre-filter chamber (10) is provided at the lower end of the cylinder. A drain cover (4) is detachably provided on the drain pipe (12). A support member (14) is connected to the drain cover (4) and passes through the pre-filter chamber (10) and overlaps with the cover (1). A cleaning part that elastically abuts against the filter assembly is rotatably provided on the support member (14). A drive part that drives the cleaning part to rotate with the water flow from the inlet pipe (5) is provided between the upper end of the cleaning part and the cover (1). The drive part includes several fan blades (17) arranged circumferentially above the cleaning part. The fan blades (17) form an angle with the direction of water flow. A horizontal plate (7) is provided inside the cover (1) and a horizontal plate (7) is provided at the lower end of the horizontal plate (7). A water pipe (8) with a vertical water inlet pipe (5) protrudes from it. The support member (14) includes a support pipe (141) that is inserted into the water pipe (8), a connecting rod (142) that is vertically arranged on the inner wall of the support pipe (141), and a support rod (143) that is fixed at both ends to the connecting rod (142) and the drain cover (4) respectively. The fan blade (17) is rotatably arranged inside the support pipe (141). A plug (21) that can open or block the water pipe (8) is elastically raised and lowered on the horizontal plate (7). An elastic member (22) that drives the plug (21) to block the water pipe (8) is provided between the plug (21) and the upper end of the cover (1). A top rod (23) protrudes from the end of the connecting rod (142) away from the support rod (143) to press the plug (21) to open the water pipe (8) after the drain cover (4) is connected to the drain pipe (12).

2. A stainless steel filter according to claim 1, characterized in that: The cleaning unit includes a rotating sleeve (15) sleeved outside the support rod (143), a bearing (25) disposed between the rotating sleeve (15) and the support rod (143), and bristles (16) disposed on the outer wall of the rotating sleeve (15) along its axial direction. The fan blade (17) is disposed on the outer ring wall of the rotating sleeve (15).

3. A stainless steel filter according to claim 2, characterized in that: A dirt baffle (18) is provided on the support rod (143) above the fan blade (17), which expands downward into a cone shape and whose lower end face exceeds the rotating sleeve (15).

4. A stainless steel filter according to claim 1, characterized in that: The bristles (16) are arranged in 1 to 4 groups around the rotating sleeve (15) in a circumferential interval.

5. A stainless steel filter according to claim 1, characterized in that: The lower end of the plug (21) has a recessed slot (24) for inserting the push rod (23).

6. A stainless steel filter according to claim 5, characterized in that: An installation tube (19) with an inner diameter larger than that of the plug (21) is provided on the upper end face of the cover (1). An installation cover (20) is detachably provided on the installation tube (19). The two ends of the elastic member (22) are fixedly connected to the plug (21) and the installation cover (20) respectively.

7. A stainless steel filter according to claim 1, characterized in that: The support rod (143) is detachably connected to the drain cover (4).

8. A stainless steel filter according to claim 1, characterized in that: The filter assembly is a rigid filter cylinder (9). One end of the drain pipe (12) extends into the cylinder (2) and the end is folded outward to form a cover (13) that is sealed and inserted into the bottom of the filter cylinder (9). The other end of the drain pipe (12) extends out of the cylinder (2) and is detachably connected to the drain cover (4).

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