Self-cleaning filter

Abstract

The utility model discloses a self-cleaning filter in the field of filtering devices, which comprises a shell, a filter element and an adjusting mechanism, the outer wall of the shell is provided with a water outlet and a water inlet which are communicated with the inside, and the adjusting mechanism switches the path of water flow entering the shell so as to realize the filtering and self-cleaning functions of the filter; a sewage draining exit is formed in the bottom of the shell and is used for draining sewage when the filter is self-cleaned. According to the self-cleaning filter provided by the utility model, the transverse channel on the piston can be rotated to be communicated with the water outlet or the water inlet, so that the filtering function and the self-cleaning function of the filter are realized.

Description

Technical Field

[0001] This utility model relates to the field of filtration devices, and in particular to a self-cleaning filter. Background Technology

[0002] Currently, industrial water filters using stainless steel filter elements are commonly used in industry. They have the advantage that the filter elements can be disassembled, cleaned, and reused. However, the disassembly and cleaning process requires a lot of manpower and equipment downtime. Improper disassembly or installation during filter element cleaning may lead to water leakage. Moreover, repeated disassembly and assembly increases the wear and tear on the mechanism. Utility Model Content

[0003] The purpose of this invention is to provide a self-cleaning filter, which uses a rotating piston to connect a transverse channel to a water outlet or inlet, thereby achieving the filter's filtration and self-cleaning functions.

[0004] To solve the above technical problems, the following technical solution is adopted:

[0005] This utility model provides a self-cleaning filter including a housing, a filter element, and an adjustment mechanism. The filter element includes a filter element outlet at one end and filter holes on the side wall. The filter element is disposed inside the housing. The outer wall of the housing is provided with an outlet and an inlet communicating with the interior. The adjustment mechanism switches the path of the water flow into the housing to realize the filtration and self-cleaning functions of the filter.

[0006] The adjusting mechanism includes a piston, which is disposed inside a housing. The piston has a vertical channel and a horizontal channel, which are connected to and perpendicular to each other. The vertical channel is located above the filter cartridge outlet and is connected to the filter cartridge outlet. The horizontal channel is connected to the water outlet or the water inlet by rotating the piston.

[0007] The bottom of the housing is provided with a drain port, which is used for draining the filter during self-cleaning.

[0008] Optionally, the transverse channel includes a first channel and a second channel, the first channel being used to communicate with the inlet and the second channel being used to communicate with the outlet, the first channel and the second channel forming a 90-degree angle.

[0009] Optionally, the piston is further provided with a notch on its outer side, the notch being located opposite the second channel, and the size of the notch being such that when the second channel is connected to the outlet, the notch covers the inlet, and when the first channel is connected to the inlet, the piston closes the outlet.

[0010] Optionally, the housing includes a first outer shell and a second outer shell, which are installed by clamps and snap-fits.

[0011] Optionally, a sealing ring is provided at the connection between the first housing and the second housing.

[0012] Optionally, the piston is connected to an external operating handle via a screw, the screw extending from the top of the second housing and connected to the operating handle, and the screw being threadedly connected to the second housing.

[0013] Optionally, the filter outlet at one end of the filter element is aligned with the vertical channel, and a sealing plate is provided at the other end. The sealing plate abuts against one end of the spring, and the other end of the spring abuts against the bottom of the housing. The sealing plate is used to disconnect the upper and lower spaces of the sealing plate during the filtration function and to connect the upper and lower spaces of the sealing plate during the self-cleaning function.

[0014] Optionally, the inner walls of both the inlet and the outlet are provided with internal threads for connecting pipes.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0016] 1. The self-cleaning filter provided by this utility model can connect the horizontal channel on the rotating piston to the outlet or inlet to achieve the filtration and self-cleaning functions of the filter. When the horizontal channel is connected to the inlet, water enters from the inlet, flows through the vertical channel into the filter element outlet, then exits from the filter holes, and finally exits from the drain outlet, thus achieving the self-cleaning function. When the horizontal channel is connected to the outlet, water enters the housing from the inlet, is filtered through the filter holes on the side wall of the filter element, enters the filter element, then exits from the filter element outlet to the vertical channel, then flows through the horizontal channel and finally exits from the outlet, thus achieving the filtration function. When the horizontal channel is connected to the outlet, water enters the housing from the inlet, is filtered through the filter holes on the side wall of the filter element, enters the filter element, then exits from the filter element outlet to the vertical channel, then flows through the horizontal channel and finally exits from the outlet, thus achieving the filtration function.

[0017] 2. This utility model has a sealing plate at the bottom of the filter element and a drain port at the bottom of the housing. During the self-cleaning process, the upper and lower spaces of the sealing plate are opened, and the water discharged from the filter holes on the side wall of the filter element flows down to the drain port and flows out from the drain port. When the rotating piston switches the channel, the sealing plate moves up and down, thereby realizing the opening and closing of the sealing plate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the self-cleaning filter in an embodiment of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the self-cleaning filter during self-cleaning in an embodiment of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the self-cleaning filter during filtration in an embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the piston structure in an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Housing; 101. First outer shell; 102. Second outer shell; 2. Piston; 201. Vertical channel; 202. First channel; 203. Second channel; 204. Notch; 3. Screw; 4. Operating handle; 5. Inlet; 6. Outlet; 7. Drain; 8. Filter element; 801. Filter element outlet; 9. Sealing plate; 10. Spring; 11. Clamp; 12. Buckle; 13. Sealing ring. Detailed Implementation

[0024] The technical solutions of the present invention 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 invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1

[0027] like Figure 1 , Figure 2As shown, this embodiment provides a self-cleaning filter, including a housing 1 and a filter element 8. The filter element 8 is disposed inside the housing 1. The housing 1 is also provided with an inlet 5 and an outlet 6, which are connected to the interior of the housing 1. A piston 2 is provided above the filter element 8. The piston 2 is provided with a vertical channel 201 and a horizontal channel inside. The horizontal channel is connected to the vertical channel 201 and is perpendicular to each other. The horizontal channel is at the same height as the inlet 5 and outlet 6 on the housing. The vertical channel 201 is aligned with and connected to the filter element outlet 801 on the filter element 8. The opening of the vertical channel 201 is located at one end face of the piston 2. The other end face of the piston 2 is connected to an operating handle 4, which is located outside the housing 1. By rotating the piston 2 through the operating handle 4, the horizontal channel is connected to the inlet 5 or the outlet 6.

[0028] A drain port 7 is also provided at the bottom of the housing 1. The drain port 7 is used to open to drain water when the filter is self-cleaning and to close when the filter is filtering water.

[0029] When the horizontal channel is connected to the inlet 5, water enters from the inlet 5, flows through the horizontal channel and the vertical channel 201, and then enters the filter element 8 from the filter element outlet 801. It then exits from the filter holes on the side wall of the filter element 8 and finally exits from the drain port 7 at the bottom of the housing 1, thereby cleaning the filter holes and realizing the self-cleaning function.

[0030] When the horizontal channel is connected to the outlet 6, water enters the housing 1 from the inlet 5 and then enters the filter element 8 from the filter holes on the side wall of the filter element 8. The filtered water is discharged from the filter element outlet 801, and after passing through the vertical channel 201 and the horizontal channel, it is discharged from the outlet 6, thus realizing the filtration function.

[0031] Example 2

[0032] like Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a self-cleaning filter based on Embodiment 1. The horizontal channel includes a first channel 202 and a second channel 203. The first channel 202 and the second channel 203 form a 90-degree angle. When the self-cleaning function is realized, the first channel 202 is connected to the water inlet 5. When the filtration function is realized, the second channel 203 is connected to the water outlet 6.

[0033] A notch 204 is also provided on one side wall of the piston 2. The notch 204 is located on the opposite side of the second channel 203. When the second channel 203 is connected to the outlet 6, the notch 204 is located at the inlet 5. The water inlet 5 can enter the interior of the housing 1 and then be filtered through the filter holes on the side wall of the filter element 8. The size of the notch 204 is such that when the second channel 203 is connected to the outlet 6, the notch 204 is directly opposite to the inlet 5 and covers the inlet 5. The water in the inlet 5 directly enters the interior of the housing. When the first channel 202 is connected to the inlet 5, the piston 2 completely seals the outlet 6 to prevent water from flowing out of the outlet 6.

[0034] In some embodiments, the inlet 5 and outlet 6 on the housing 1 are located on opposite sides at the same height and aligned with the first channel 202 and the second channel 203 on the internal piston 2. During the rotation of the piston 2, when the first channel 202 is aligned and connected with the inlet 5, the outlet of the second channel 203 is sealed by the inner wall of the housing 1. At the same time, the piston 2 also seals the outlet 6. When the second channel 203 is aligned and connected with the outlet 6, the outlet of the second channel 203 is sealed by the inner wall of the housing 1, and the notch 204 is directly opposite the inlet 5.

[0035] The housing 1 is a cylindrical structure with an internal cavity and tapered arc surfaces at both ends. It includes a first outer shell 101 and a second outer shell 102, which are connected and secured by clamps 11 and snap fasteners 12. A sealing ring 13 is provided at the connection between the first and second outer shells 101 and 102 to prevent water leakage. The drain outlet 7 is located at the bottom of the first outer shell 101. The operating handle 4 is located at the top of the second outer shell 102. The water outlet 6 and the water inlet 5 are located on two opposite side walls of the second outer shell 102.

[0036] In some embodiments, the filter element 8 is disposed within the first housing 101. The filter element 8 has a cylindrical structure and its diameter is smaller than the inner diameter of the first housing 101. A sealing plate 9 is provided at the bottom of the filter element 8. One end of a spring 10 is connected to the bottom of the sealing plate 9, and the other end of the spring 10 abuts against the inner bottom of the first housing 101. The sealing plate 9 has a circular plate structure, and its diameter is slightly smaller than the inner diameter of the cylindrical section of the first housing 101. When the sealing plate 9 is located within the tapered arc structure at the bottom of the first housing 101, the upper and lower spaces of the sealing plate 9 can be disconnected. When the sealing plate 9 is located within the cylindrical section of the first housing 101, the upper and lower spaces of the sealing plate 9 are connected. The piston 2 has the same diameter as the inner diameter of the second housing 102.

[0037] Piston 2 has a boss on one end face, with a vertical channel 201 inside the boss. The boss has a small diameter, allowing the water level entering the housing from the inlet 5 to be higher than the filter element 8, so that the filtered water inside the filter element 8 can be discharged from the outlet 6. The other end face of piston 2 is connected to the operating handle 4 via a screw 3. A through hole for the screw 3 is provided at the end of the second housing 102, and an internal thread that mates with the external thread on the screw 3 is provided in the through hole. The screw 3 is threadedly connected to the second housing 102. When piston 2 is rotated to its final position, it can stabilize the position of piston 2 and prevent piston 2 from moving due to water flow. When piston 2 rotates, piston 2 moves up and down, opening and closing the sealing plate 9 through the up and down movement of piston 2. The up and down stroke of piston 2 is small and does not affect the connection between the first channel 202 and the inlet 5, the alignment of the notch 204 with the inlet 5, the connection between the second channel 203 and the outlet 6, and the sealing of the outlet 6 by piston 2.

[0038] In some embodiments, internal threads are provided on the inner walls of the inlet 5 and the outlet 6, which are connected to the inlet pipe and the outlet pipe respectively. Internal threads can also be provided on the inner wall of the drain outlet 7 to connect to the drain pipe.

[0039] When in use, rotate the operating handle 4 to the filtration mode. The second channel 203 on the piston 2 connects to the outlet 6, and the notch 204 aligns with the inlet 5. The sealing plate 9 at the bottom of the filter element 8 seals its upper and lower spaces. The spring 10 is in a compressed state. Water in the inlet pipe enters the housing 1 through the inlet 5 and then enters through the filter holes on the side wall of the filter element 8 for filtration. When the water level is higher than the filter element 8, the water inside the filter element 8 enters the vertical channel 201 and then exits through the second channel 203, finally exiting through the outlet 6, thus achieving the water filtration function. When the filter element 8 needs cleaning, rotate the operating handle 4 counterclockwise by 90 degrees. The piston 2 moves upward, and the spring 10 at the bottom of the sealing plate 9 exerts an upward force on the sealing plate 9 and the filter element 8. The filter element 8 and the sealing plate 9 move upward, and the upper and lower spaces of the sealing plate 9 are connected. Meanwhile, the first channel 202 is connected to the inlet 5, and the outlet 6 is sealed by the piston 2. After water enters from the inlet 5, it passes through the first channel 202, and then enters the filter element 8 from the filter element outlet 801 through the vertical channel 201. Then, the water is discharged from the filter holes on the side wall of the filter element 8 to the outside of the filter element 8, flows to the bottom of the housing 1 and flows to the bottom of the sealing plate 9, and finally is discharged from the drain outlet 7, thus realizing the self-cleaning function.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A self-cleaning filter, characterized in that, The filter includes a housing, a filter element, and an adjustment mechanism. The filter element includes a filter outlet at one end and filter holes on the side wall. The filter element is disposed inside the housing. The outer wall of the housing is provided with an outlet and an inlet that communicate with the interior. The adjustment mechanism switches the path of the water flow into the housing to achieve the filtration and self-cleaning functions of the filter. The adjusting mechanism includes a piston, which is disposed inside a housing. The piston has a vertical channel and a horizontal channel, which are connected to and perpendicular to each other. The vertical channel is located above the filter cartridge outlet and is connected to the filter cartridge outlet. The horizontal channel is connected to the water outlet or the water inlet by rotating the piston. The bottom of the housing is provided with a drain port, which is used for draining the filter during self-cleaning.

2. The self-cleaning filter according to claim 1, characterized in that, The transverse channel includes a first channel and a second channel. The first channel is used to communicate with the inlet, and the second channel is used to communicate with the outlet. The first channel and the second channel form a 90-degree angle.

3. The self-cleaning filter according to claim 2, characterized in that, The piston is also provided with a notch on its outer side, which is located opposite the second channel. The size of the notch is such that when the second channel is connected to the outlet, the notch covers the inlet, and when the first channel is connected to the inlet, the piston closes the outlet.

4. The self-cleaning filter according to claim 1, characterized in that, The housing includes a first outer shell and a second outer shell, which are installed by means of clamps and snap fasteners.

5. The self-cleaning filter according to claim 4, characterized in that, A sealing ring is provided at the connection between the first outer shell and the second outer shell.

6. The self-cleaning filter according to claim 4, characterized in that, The piston is connected to an external operating handle via a screw. The screw extends from the top of the second housing and is connected to the operating handle. The screw is threadedly connected to the second housing.

7. The self-cleaning filter according to claim 1, characterized in that, The filter cartridge outlet at one end is aligned with the vertical channel, and a sealing plate is provided at the other end. The sealing plate abuts against one end of a spring, and the other end of the spring abuts against the bottom of the housing. The sealing plate is used to disconnect the upper and lower spaces during the filtration function and to connect the upper and lower spaces during the self-cleaning function.

8. The self-cleaning filter according to claim 1, characterized in that, Both the inlet and outlet have internal threads on their inner walls for connecting pipes.

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