Filter capable of automatically detecting blockage and facilitating installation of various filter screens

Abstract

The utility model relates to a filter capable of automatically detecting blockage and convenient to install various filter screens, which comprises a filter shell and a filter end cover, a plurality of limiting grooves are arranged in the filter shell, the diameters of the limiting grooves are different, filter elements with different diameters are arranged in the limiting grooves, and the filter end cover is arranged in the filter shell. A turbine flowmeter can be mounted in the water outlet channel, and a pressure sensor can be mounted in the water inlet channel; according to the utility model, the limiting grooves can be used for conveniently mounting the filter elements with different diameters, so that the filter element is more convenient to disassemble, assemble and clean, and convenience is brought to a user during use.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter which can automatically detect blockage and is convenient for installing various filter screens. Background Art

[0002] In actual use of washing machines, the drainage filter is often clogged and cannot drain water. Once this problem occurs, the user needs to manually remove the filter in the drainage filter for cleaning. Therefore, the drainage filter of existing washing machines requires users to clean it regularly.

[0003] The application publication number is CN107338621A, which discloses a filtering device and a washing machine. Combined with its specification and drawings, the scheme includes a filter mesh bag with a flexible structure. When water flows through the filter mesh bag, filtered materials such as leaves and sand are retained in the filter mesh bag. Since the filter mesh bag is a flexible structure, the filter mesh bag can be turned out when a large amount of filtered materials are gathered. However, this structure only allows one filter mesh bag to be installed inside the entire filter, but the filtering effect of one filter mesh bag is fixed, and it is impossible to filter different water for different water use environments. Summary of the invention

[0004] The utility model mainly aims at the problems existing in the use of filters and invents a filter which can automatically detect blockage and is convenient for installing various filter screens. A plurality of limit chambers with different diameters are arranged inside the filter housing, and a pressing piece is installed inside each limit chamber. A limit groove with different diameters is formed between one end of the pressing piece and one end of the limit chamber, so as to facilitate the installation of filter elements with different diameters. Since the mesh sizes of the first filter screen, the second filter screen and the third filter screen are different, the filtered material on the upper part of the filter screen will be washed to the lower part of the filter screen when water passes through, so as to ensure that the upper part of the filter screen will not be blocked. A turbine flow meter can be installed inside the water outlet channel, and a pressure sensor can be installed in the water inlet channel.

[0005] The invention objective of the utility model is achieved through the following technical scheme: a filter which can automatically detect blockage and is convenient for installing a variety of filter screens, comprising a filter housing and a filter end cover, wherein a plurality of limiting grooves are arranged inside the filter housing, each of the limiting grooves has a different diameter, and a filter element with a different diameter is installed inside each of the limiting grooves.

[0006] Preferably, a water inlet channel is provided on the surface of the filter end cover, a plurality of first fixing bosses are provided on the edge of the filter end cover, a plurality of second fixing bosses matching the first fixing bosses are provided at one end of the filter housing, and fixing screws are provided inside the first fixing bosses and the second fixing bosses.

[0007] Preferably, a number of limiting chambers with different diameters are provided inside the filter housing. A pressing member is installed inside each limiting chamber. A limiting groove with a different diameter is formed between the bottom of the pressing member and the bottom of the limiting chamber. This setting is for installing filter elements with different diameters.

[0008] Preferably, the cross-section of the pressing member is annular, and a number of rectangular grooves are provided on the side surface of the pressing member. This setting is for enabling the pressing member to have a certain toughness or deformation ability.

[0009] Preferably, a water distribution member capable of diverting water in all directions is further provided inside the filter housing. The edge of the water distribution member is pressed by the filter end cover.

[0010] Preferably, the water distribution member includes a water distribution support rod, a conical flow guiding boss, and a first annular member. A number of water distribution support rods are connected to the inside of the first annular member towards the center. The end of the water distribution support rod is connected with a conical flow guiding boss. A sealing ring is provided between the first annular member and the filter end cover.

[0011] Preferably, the filter element includes a first filter screen, a second filter screen, and a third filter screen. A second annular member is provided at the end of the first filter screen. A third annular member is provided at the end of the second filter screen. A fourth annular member is provided at the end of the third filter screen. The second annular member, the third annular member, and the fourth annular member are pressed by the limiting groove.

[0012] Preferably, a water outlet channel is provided at the bottom of the filter housing. A magnetic ring is provided outside the water outlet channel. A turbine flowmeter is provided inside the water outlet channel. This setting is for monitoring whether the inside of the entire filter is blocked.

[0013] Preferably, a pressure sensor is installed inside the water inlet channel. This setting is for monitoring whether the inside of the entire filter is blocked. It is sufficient to choose either installing a turbine flowmeter inside the water outlet channel or installing a pressure sensor inside the water inlet channel.

[0014] Compared with the prior art, the utility model has the following beneficial effects: 1. Several limiting chambers with different diameters are arranged inside the filter housing. A pressing member is installed inside each limiting chamber, and a limiting groove with a different diameter is formed between one end of the pressing member and one end of the limiting chamber, which can facilitate the installation of filter elements with different diameters. Since the pressing member and the filter housing are not integrally connected, it is also more convenient for disassembly, cleaning, and brings convenience to users during use; 2. Since the mesh numbers of the first filter screen, the second filter screen, and the third filter screen are different, when water passes through, the filter substances on the upper part of the filter screen will be washed to the lower part of the filter screen, ensuring that the upper part of the filter screen will not be blocked, maintaining the continuous filtering function of the filter screen, and improving the filtering effect of the entire filter; 3. When the water discharged from the washing machine enters from the inside of the water inlet channel, the water will impact the conical diversion boss, which will disperse and guide the water around the water net, ensuring that the water is dispersed to the surrounding and flows downward, effectively realizing the control of the water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the utility model;

[0016] Figure 2 is a cross-sectional view of the utility model;

[0017] Figure 3 is a cross-sectional view of the utility model after removing the filter element and the pressing member;

[0018] Figure 4 is a perspective view of the utility model after half-sectioning the filter housing, the filter end cover, and the magnetic ring;

[0019] Figure 5 is an exploded view of the utility model;

[0020] Figure 6 is a schematic diagram of the limiting groove area of the utility model.

[0021] Reference numerals in the drawings: 1. Filter housing; 11. Limiting groove; 12. Second fixing boss; 13. Limiting chamber; 14. Water outlet channel; 15. Magnetic ring; 16. Turbine flowmeter; 17. Sealing ring; 2. Filter end cover; 21. Water inlet channel; 22. First fixing boss; 3. Filter element; 31. First filter screen; 32. Second filter screen; 33. Third filter screen; 311. Second annular member; 321. Third annular member; 331. Fourth annular member; 4. Fixing screw; 5. Pressing member; 51. Rectangular groove; 6. Water dividing member; 61. Water dividing support rod; 62. Conical diversion boss; 63. First annular member; 6. Water dividing member; 61. Water dividing support rod; 62. Conical diversion boss; 63. First annular member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the embodiments shown in the accompanying drawings:

[0023] As Figures 1 to 6 shown, a filter that automatically detects blockages and is convenient for installing multiple filter meshes includes a filter housing 1 and a filter end cap 2. The filter housing 1 and the filter end cap 2 are detachably connected. The surface of the filter end cap 2 is provided with a water inlet passage 21. The edge of the filter end cap 2 is provided with a plurality of first fixing bosses 22. One end of the filter housing 1 is provided with a plurality of second fixing bosses 12 adapted to the first fixing bosses 22. The inside of the first fixing bosses 22 and the second fixing bosses 12 is locked and fixed by fixing screws 4. The bottom of the filter housing 1 is provided with a water outlet passage 14. A magnetic ring 15 is provided outside the water outlet passage 14. A turbine flowmeter 16 is provided inside the water outlet passage 14. After such a setting, the water discharged from the washing machine flows in from the inside of the water inlet passage 21 and flows out from the inside of the water outlet passage 14. Whenever the water flow allowed to pass through the inside of the filter housing 1 gradually becomes smaller, the turbine flowmeter 16 can monitor and alarm in a timely manner, prompting the user that the entire filter is blocked. During disassembly and assembly, just use a screwdriver to remove the fixing screws 4, and the filter housing 1 and the filter end cap 2 can be opened.

[0024] In this embodiment, several limiting chambers 13 with different diameters are provided inside the filter housing 1. A pressing member 5 is installed inside each limiting chamber 13. Limiting grooves 11 with different diameters are formed between the bottom of the pressing member 5 and the bottom of the limiting chamber 13. Filter elements 3 with different diameters are installed inside each limiting groove 11. Specifically, the filter element 3 includes a first filter screen 31, a second filter screen 32, and a third filter screen 33. A second annular member 311 is provided at the end of the first filter screen 31. A third annular member 321 is provided at the end of the second filter screen 32. A fourth annular member 331 is provided at the end of the third filter screen 33. The second annular member 311, the third annular member 321, and the fourth annular member 331 are pressed by the limiting groove 11. The cross-section of the pressing member 5 is annular. Several rectangular grooves 51 are provided on the side surface of the pressing member 5. After such a setting, when installing each filter element 3, first open the filter end cover 2, and then insert the third filter screen 33 downward. Since the third filter screen 33 and the fourth annular member 331 are integrated and its diameter is larger than the diameter of the bottom limiting chamber 13, the fourth annular member 331 will be stuck at the top of the bottom limiting chamber 13. Then continue to insert the pressing member 5 inward. In this way, the bottom of the pressing member 5 will press the surface of the fourth annular member 331 to prevent it from moving randomly and limit its position. Then continue to insert the second filter screen 32 inward. Since the second filter screen 32 and the third annular member 321 are integrated and its diameter is larger than the diameter of the pressing member 5, the third annular member 321 will be stuck inside the limiting groove 11. Similarly, the first filter screen 31 will be stuck inside the limiting groove 11. It should be noted that since the water flowing from top to bottom has a certain kinetic energy, in order to wash the filter substances on the upper part of the filter screen to the lower part of the filter screen when passing through the first filter screen 31, the second filter screen 32, and the third filter screen 33, ensure that the upper part of the filter screen will not be blocked, and maintain the continuous filtering function of the filter screen. The mesh numbers of the first filter screen 31, the second filter screen 32, and the third filter screen 33 are different. The materials of the first filter screen 31 and the second filter screen 32 are nylon, and the material of the third filter screen 33 is stainless steel for collecting impurities. The mesh number of the first filter screen 31 is 60 meshes, the mesh number of the second filter screen 32 is 120 meshes, and the mesh number of the third filter screen 33 is 200 meshes. The filter elements 3 with different mesh numbers ensure that the upper part of the filter screen will not be blocked and maintain the continuous filtering of the filter screen. When the filter substances accumulate on the upper part, the filter substances need to be manually cleaned.

[0025] In this embodiment, a water distributor 6 capable of diverting water in all directions is further provided inside the filter housing 1. The edge of the water distributor 6 is pressed by the filter end cover 2. Specifically, the water distributor 6 includes a water distribution support rod 61, a conical diversion boss 62, and a first annular member 63. A plurality of water distribution support rods 61 are connected to the inside of the first annular member 63 towards the center. The end of the water distribution support rod 61 is connected to a conical diversion boss 62. A sealing ring 17 is provided between the first annular member 63 and the filter end cover 2. The first annular member 63 is pressed by the bottom of the filter end cover 2. After such a setting, whenever the water discharged from the washing machine enters from the inside of the water inlet channel 21, since the water will impact the conical diversion boss 62, the conical diversion boss 62 will disperse and divert the water in all directions, ensuring that the water is dispersed to all around and flows downward.

[0026] Working principle and usage method of the utility model:

[0027] First, the entire filter can be installed near the water outlet of the washing machine. When the washing machine is a bottom drain type: it can be installed on the floor drain. Whenever the water discharged from the washing machine flows into from the inside of the water inlet channel 21, the water will impact the conical diversion boss 62, and the conical diversion boss 62 will disperse and divert the water in all directions, ensuring that the water is dispersed to all around and flows downward. Then the water will pass through the first filter screen 31, the second filter screen 32, and the third filter screen 33 in sequence. Since the mesh numbers of the three are different, the upper parts of the filter screens of each filtering element 3 will not be blocked, maintaining continuous filtering of the filter screens. Finally, it flows out through the inside of the water outlet channel 14.

[0028] When too much filtered impurities accumulate, when the water flow allowed to pass through inside the filter housing 1 gradually becomes smaller, the turbine flowmeter 16 can monitor and alarm in time, prompting the user that the entire filter is blocked inside and manual cleaning of the filter is required. During the disassembly and assembly process, only by using a screwdriver to remove the fixing screws 4, the filter housing 1 and the filter end cover 2 can be opened, and then each filtering element 3 and the pressing member 5 can be taken off in sequence for manual cleaning.

[0029] The specific embodiments described in the text are only examples to illustrate the spirit of the utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A filter that automatically detects blockages and is convenient for installing various filter meshes, comprising a filter housing (1) and a filter end cap (2), characterized in that, The interior of the filter housing (1) is provided with a number of limiting grooves (11), each of the limiting grooves (11) having a different diameter, and filter elements (3) with different diameters are installed inside each of the limiting grooves (11).

2. The filter according to claim 1, which is capable of automatically detecting blockages and facilitating the installation of various filter meshes, is characterized in that The surface of the filter end cap (2) is provided with a water inlet channel (21), and a number of first fixing bosses (22) are provided at the edge of the filter end cap (2). One end of the filter housing (1) is provided with a number of second fixing bosses (12) adapted to the first fixing bosses (22), and fixing screws (4) are provided inside the first fixing bosses (22) and the second fixing bosses (12).

3. The filter according to claim 2, which is capable of automatically detecting blockages and facilitating the installation of various filter meshes, is characterized in that, The interior of the filter housing (1) is provided with a number of limiting chambers (13) with different diameters, and pressing members (5) are installed inside each of the limiting chambers (13). Limiting grooves (11) with different diameters are formed between the bottom of the pressing member (5) and the bottom of the limiting chamber (13).

4. The filter according to claim 3, which is capable of automatically detecting blockages and facilitating the installation of multiple filter meshes, is characterized in that, The cross-section of the pressing member (5) is annular, and a number of rectangular grooves (51) are provided on the side surface of the pressing member (5).

5. The filter according to claim 4, which is capable of automatically detecting blockage and facilitating the installation of various filter meshes, is characterized in that, The interior of the filter housing (1) is further provided with a water distribution member (6) capable of diverting water in all directions, and the edge of the water distribution member (6) is pressed by the filter end cap (2).

6. The filter according to claim 5, which is capable of automatically detecting blockage and facilitating the installation of a variety of filter meshes, is characterized in that, The water distribution member (6) includes a water distribution support rod (61), a conical flow guiding boss (62) and a first annular member (63). A number of water distribution support rods (61) are connected towards the center on the inner side of the first annular member (63), the end of the water distribution support rod (61) is connected with a conical flow guiding boss (62), and a sealing ring (17) is provided between the first annular member (63) and the filter end cap (2).

7. The filter according to claim 6, which is capable of automatically detecting blockage and facilitating the installation of a variety of filter meshes, is characterized in that, The filter element (3) includes a first filter screen (31), a second filter screen (32) and a third filter screen (33). A second annular member (311) is provided at the end of the first filter screen (31), a third annular member (321) is provided at the end of the second filter screen (32), and a fourth annular member (331) is provided at the end of the third filter screen (33). The second annular member (311), the third annular member (321) and the fourth annular member (331) are pressed by the limiting groove (11).

8. The filter according to claim 7, which is capable of automatically detecting blockage and facilitating the installation of a variety of filter meshes, is characterized in that, The bottom of the filter housing (1) is provided with a water outlet channel (14), a magnetic ring (15) is installed outside the water outlet channel (14), and a turbine flowmeter (16) is installed inside the water outlet channel (14).

9. The filter according to claim 7, which is capable of automatically detecting blockages and facilitating the installation of various filter meshes, is characterized in that, A pressure sensor is installed inside the water inlet channel (21).

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