Filter assembly for water inlet end

Abstract

The utility model relates to a filter assembly for a water inlet end, which comprises a filter body, one end of the filter body is provided with a plurality of water inlet connecting grooves, the diameters of the water inlet connecting grooves are different, the water inlet connecting groove with the smallest diameter can allow water to pass through, and the interior of each water inlet connecting groove can be matched with a pipeline fixing joint. A water outlet connecting column capable of allowing water to pass through is arranged at the other end of the filter body, a pipeline assembly is arranged on the surface of the water outlet connecting column, a one-way valve is arranged in the filter body close to the water outlet connecting column, and the one-way valve can limit water from entering the filter body from the water outlet connecting column; the water inlet connecting groove can be matched with pipeline fixing connectors of different sizes, convenience is brought to a user during pipeline installation, when water flows back, the one-way valve can prevent backflow, and the situation that the service life of the whole filter body is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter component used for a water inlet end. Background Art

[0002] With the development of the economy and the continuous improvement of people's living standards, the requirements for the humanized design of washing machines are getting higher and higher. When many consumers' washing machines are used for a long time, the water inlet valve and water inlet pipe of the washing machine are connected to the water supply system pipeline and are in a closed state for a long time. If the water inlet pipeline contains various impurities, it is easy to get blocked. Therefore, it is necessary to connect a filter to the water inlet pipeline to remove impurities at the water inlet end, and replace the filter in time when the filter is about to get blocked, so as to avoid impurities entering the washing machine and affecting normal operation.

[0003] The application announcement number is CN106149307A, which discloses a washing machine water inlet pipe filter. Combined with its specification and drawings, in its scheme, a water inlet and a water outlet connected to the filter chamber are formed on the filter body. Water enters the filter from the water inlet and is discharged from the filter from the water outlet after filtration. The connecting pipe is connected to the filter by a thread, which is convenient for disassembly, replacement and cleaning of the filter. However, with this structure, only a single thread structure is set in the water inlet area of ​​the filter for disassembly and assembly. Therefore, the filter can only be installed with a connecting pipe that is compatible with the water inlet thread diameter. That is to say, the connecting pipe or joint with the diameter that the filter can adapt to is single and fixed, which is not conducive to user installation and use. Moreover, when the entire filter and water inlet pipe are in use, the hot water inside the washing machine has a probability of flowing back into the filter through the hose, thereby affecting the life of the filter. Summary of the invention

[0004] The utility model mainly aims at the problems existing in the use of the filter and invents a filter assembly for the water inlet end. The second threaded inner groove and the third threaded inner groove at one end of the filter body are arranged so as to be adaptable to pipe fixing joints of different sizes, and no matter which one is connected, the second threaded inner groove can allow water to pass through, and will not affect the normal use of the entire filter body; the water backflow will first impact the guide circular plate, and the guide groove will slide upward on the side wall of the guide column, so that there is no gap between the outer side of the guide circular plate and the inner side of the valve column, and water basically cannot pass through the inside of the valve column; the inner side of the external pipeline is plugged outside the second column, and the anti-slip boss causes the inner side of the external pipeline to deform, thereby increasing the friction force, and the pipeline is not easy to fall off.

[0005] The inventive objective of the utility model is achieved through the following technical scheme: a filter assembly for a water inlet end, comprising a filter body, one end of the filter body is provided with a plurality of water inlet connecting grooves, the diameters of each of the water inlet connecting grooves are different, the interior of the water inlet connecting groove with the smallest diameter can allow water to pass through, the interior of each of the water inlet connecting grooves can be adapted to a pipeline fixed joint, the other end of the filter body is provided with a water outlet connecting column allowing water to pass through, the surface of the water outlet connecting column is provided with a pipeline assembly, a one-way valve is provided inside the filter body near the water outlet connecting column, and the one-way valve can limit water from entering the filter body from the inside of the water outlet connecting column.

[0006] Preferably, the filter body includes a filter housing, a filter end cover and a filter screen, a first threaded boss is provided on the outer side of one end of the filter housing, a plurality of water inlet connecting grooves are provided on the outer side of the other end of the filter housing, a first threaded inner groove is provided on the inner side of one end of the filter end cover, and a water outlet connecting column is integrally provided on the outer surface of the end face, the first threaded boss is connected to the inside of the first threaded inner groove, and the filter screen is arranged inside the filter housing.

[0007] Preferably, the number of water inlet connecting grooves is two, including a second threaded inner groove and a third threaded inner groove. The water outlet connecting column includes a first column and a second column with different diameters. A valve body mounting groove is provided inside the first column. The one-way valve is arranged inside the valve body mounting groove. A plurality of anti-slip bosses are provided outside the second column.

[0008] Preferably, the one-way valve includes a valve column and a guide circular plate, one end of the guide circular plate is provided with a guide groove, the interior of the valve column is hollow and a column groove is provided on the side wall, the surface of the column groove is provided with a guide column, the guide column is slidably connected to the interior of the guide groove, and limiting bosses are provided on both sides of the end of the guide column, and the limiting bosses can prevent the guide circular plate from sliding off the guide column.

[0009] Preferably, the pipe fixing joint includes a quick-release joint assembly, a universal joint assembly and a threaded joint assembly, the quick-release joint assembly can be threadedly connected to the interior of the second threaded inner groove, and the universal joint assembly and the threaded joint assembly can be threadedly connected to the interior of the third threaded inner groove.

[0010] Preferably, the quick-release joint assembly comprises a quick-release joint cover, a quick-release joint body, a return spring and a steel ball, one end of the quick-release joint body is sleeved with a quick-release joint cover, the other end of the quick-release joint body is provided with a second threaded boss, the quick-release joint body and the quick-release joint cover are directly provided with a return spring, a plurality of trumpet holes are provided inside the side wall of the quick-release joint body, a steel ball is provided inside each of the trumpet holes, the trumpet holes can limit the steel ball from sliding into the inside of the quick-release joint body, and the quick-release joint cover can limit the steel ball from sliding to the outside of the quick-release joint body.

[0011] Preferably, the universal joint assembly comprises a universal joint body, a first support sleeve and a threaded column, the first support sleeve is provided inside the universal joint body, the surface of the side wall of the universal joint body is provided with a threaded column, and a third threaded boss is provided at one end of the universal joint body.

[0012] Preferably, the threaded joint assembly comprises a threaded joint body and a second support sleeve, wherein the second support sleeve is disposed inside the threaded joint body, and a fourth threaded boss is disposed at one end of the threaded joint body and a fourth threaded inner groove is disposed at the other end.

[0013] Preferably, the pipeline assembly includes a first pipe, a second pipe and a pipe connecting cover, one end of the first pipe is connected to the water outlet connecting column, one end of the second pipe is provided with a pipe plug, the second pipe is connected to the inside of the first pipe through the pipe plug, and the other end of the second pipe is provided with a pipe connecting cover, and the pipe connecting cover can be connected to an external water pipe.

[0014] Compared with the prior art, the utility model has the following beneficial effects: 1. The second threaded inner groove and the third threaded inner groove at one end of the filter body are arranged so as to adapt to pipe fixing joints of different sizes. According to different diameters, it can be installed inside the second threaded inner groove or the third threaded inner groove. Moreover, no matter which one is connected, the second threaded inner groove can allow water to pass through, which will not affect the normal use of the entire filter body, bringing convenience to users when installing pipes; 2. Whenever water in the first pipe flows back, the water will first impact the guide circular plate, and the guide chute is on the side of the guide column. The wall slides upward, and there is no gap between the outer side of the guide circular plate and the inner side of the valve column. Water is basically unable to pass through the inside of the valve column, thereby preventing hot water or sewage from flowing back into the inside of the valve column and affecting the service life of the entire filter body. 3. When the external pipeline is installed at the water outlet end of the filter body, it is only necessary to plug the inner side of the external pipeline on the outside of the second column. The anti-slip boss deforms the inner side of the external pipeline, increasing the friction and making it difficult for the external pipeline to fall off. At this time, installing the clamp will save extra effort, which brings convenience to the user when installing the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the filter body and the pipe fixing joint area of ​​the utility model;

[0017] Figure 3 It is a cross-sectional view of the filter body and the pipe fixing joint area of ​​the utility model;

[0018] Figure 4 A stereogram of the present utility model;

[0019] Figure 5 It is a cross-sectional view of the pipe fixed joint area of ​​the utility model;

[0020] Figure 6 It is a cross-sectional view of the pipeline component area of ​​the utility model.

[0021] Markings in the figure: 1. Filter body; 11. Water inlet connection groove; 12. Water outlet connection column; 13. Filter housing; 14. Filter end cover; 15. Filter screen; 111. Second threaded inner groove; 112. Third threaded inner groove; 121. First column; 122. Second column; 123. Valve body mounting groove; 124. Anti-slip boss; 131. First threaded boss; 141. First threaded inner groove; 2. Pipeline fixed joint; 21. Quick-release joint assembly; 22. Universal joint assembly; 23. Threaded joint assembly; 211. Quick-release joint body; 212. Quick-release joint cover; 213, second threaded boss; 214, return spring; 215, trumpet hole; 216, steel ball; 221, universal joint body; 222, first support sleeve; 223, threaded column; 224, third threaded boss; 231, threaded joint body; 232, second support sleeve; 233, fourth threaded boss; 234, fourth threaded inner groove; 3, pipeline assembly; 31, first pipeline; 32, second pipeline; 33, pipeline connection cover; 4, one-way valve; 41, valve column; 42, guide circular plate; 412, guide column; 413, limit boss; 421, guide chute. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0023] like Figures 1 to 6As shown, a filter assembly for a water inlet end includes a filter body 1, one end of the filter body 1 is provided with a plurality of water inlet connecting grooves 11, the diameters of each of the water inlet connecting grooves 11 are different, and the interior of the water inlet connecting groove 11 with the smallest diameter can allow water to pass through. Specifically, the filter body 1 includes a filter housing 13, a filter end cover 14 and a filter screen 15, one end of the filter housing 13 is provided with a first threaded boss 131 on the outside, and the other end of the filter housing 13 is provided with a plurality of water inlet connecting grooves 11 on the outside, and the water inlet connecting grooves 11 are provided on the outside. The number of water connection grooves 11 is two, including a second threaded inner groove 111 and a third threaded inner groove 112. The inner side of one end of the filter end cover 14 is provided with a first threaded inner groove 141, and the outer surface of the end face is integrally provided with a water outlet connection column 12 that allows water to pass through. The water outlet connection column 12 includes a first column 121 and a second column 122 with different diameters. The interior of the first column 121 is provided with a valve body mounting groove 123, and the one-way valve 4 is arranged inside the valve body mounting groove 123. The one-way valve 4 can limit the water from the inside of the water outlet connection column 12. Entering the interior of the filter body 1, the exterior of the second column 122 is provided with a plurality of anti-slip bosses 124, the first threaded boss 131 is connected to the interior of the first threaded inner groove 141, and the filter screen 15 is arranged inside the filter housing 13. After such arrangement, since the filter housing 13 is connected to the first threaded inner groove 141 inside the filter end cover 14 through the first threaded boss 131, a two-stage detachable design is realized. Whenever the filter screen 15 needs to be taken out, it is only necessary to rotate the filter housing 13 or the filter end cover 14 to open it. The same is true during installation. Since the cross-sectional area of ​​the one-way valve 4 that allows water to pass through is smaller than that of the second column 122, the cross-sectional area of ​​the valve body mounting groove 123 is larger than the cross-sectional area inside the second column 122. The anti-slip boss 124 allows the external pipeline to be installed on the filter body 1 by simply plugging the inner side of the external pipeline onto the outside of the second column 122. In this way, the anti-slip boss 124 causes the inner side of the external pipeline to deform, increasing the friction force, making it difficult for the external pipeline to fall off. If it needs to be completely locked, only a clamp needs to be added to the outside of the pipeline.

[0024] In this embodiment, the one-way valve 4 includes a valve cylinder 41 and a guide circular plate 42, one end of the guide circular plate 42 is provided with a guide groove 421, the interior of the valve cylinder 41 is hollow and a cylinder groove 411 is provided on the side wall, and a guide column 412 is provided on the surface of the cylinder groove 411, and the guide column 412 is slidably connected to the interior of the guide groove 421, and limiting bosses 413 are provided on both sides of the end of the guide column 412, and the limiting bosses 413 can prevent the guide circular plate 42 from sliding off the guide column 412. When the water flows from top to bottom, it will first flow into the interior of the valve cylinder 41. At this time, the guide circular plate 42 will be moved downward by the impact of the water, and the guide circular plate 42 will be moved downward by the impact of the water. A gap is created between the outer side of the plate 42 and the inner side of the valve column 41, that is, the guide groove 421 slides downward on the side wall of the guide column 412. After sliding a certain distance, the limiting boss 413 limits the maximum sliding distance of the guide circular plate 42. At this time, water can flow out freely through the gap. Whenever water refluxes, the water will first impact the guide circular plate 42, causing the guide groove 421 to slide upward on the side wall of the guide column 412. In this way, there is no gap between the outer side of the guide circular plate 42 and the inner side of the valve column 41, and water basically cannot pass through the interior of the valve column 41, preventing water from flowing back into the interior of the valve column 41, and water cannot flow back into the interior of the filter body 1.

[0025] In this embodiment, the interior of each water inlet connection groove 11 can be adapted to the pipeline fixed joint 2, and the pipeline fixed joint 2 includes a quick-release joint assembly 21, a universal joint assembly 22 and a threaded joint assembly 23.

[0026] The quick-release joint assembly 21 includes a quick-release joint cover 212, a quick-release joint body 211, a return spring 214 and a steel ball 216. One end of the quick-release joint body 211 is sleeved with the quick-release joint cover 212, and the other end of the quick-release joint body 211 is provided with a second threaded boss 213. The quick-release joint body 211 and the quick-release joint cover 212 are directly provided with a return spring 214. A plurality of horn holes 215 are provided inside the side wall of the quick-release joint body 211, and a steel ball 216 is provided inside each of the horn holes 215. The horn holes 215 can limit the steel ball 216. 16 slides into the inside of the quick-release joint body 211, and the quick-release joint cover 212 can limit the steel ball 216 from sliding to the outside of the quick-release joint body 211. After such a setting, first push the quick-release joint cover 212 downward by hand, at this time, the return spring 214 will be deformed, and the steel ball 216 has a certain activity range inside the speaker hole 215, and then the external water inlet pipe can be directly inserted into the inside of the quick-release joint body 211. After releasing the quick-release joint cover 212, the return spring 214 will make it move upward, so that the inner side wall of the quick-release joint cover 212 can limit the steel ball 216. The steel ball 216 is movable, so that the steel ball 216 will be squeezed with the side wall of the water inlet pipe to deform it to increase the friction force, thereby realizing the rapid installation of the water inlet pipe. Similarly, when the quick-release joint assembly 21 is installed on the filter body 1, it is only necessary to thread the second threaded boss 213 into the inside of the second threaded inner groove 111 to realize the disassembly; the universal joint assembly 22 includes a universal joint body 221, a first support sleeve 222 and a threaded column 223, the interior of the universal joint body 221 is provided with a first support sleeve 222, and the surface of the side wall of the universal joint body 221 is provided with a threaded The threaded column 223 is a third threaded boss 224 at one end of the universal joint body 221. After such arrangement, when the external water inlet pipeline needs to be installed, the threaded column 223 is rotated outward until the water inlet pipeline can be inserted into the universal joint body 221 and the first support sleeve 222, and then the threaded column 223 is rotated inward to continuously press the water inlet pipeline to increase the friction force, thereby realizing the rapid installation of the water inlet pipeline. When the universal joint assembly 22 is installed on the filter body 1, it only needs to thread the third threaded boss 224 into the third threaded inner groove 112 to realize disassembly and assembly;The threaded joint assembly 23 includes a threaded joint body 231 and a second support sleeve 232. The threaded joint body 231 is provided with a second support sleeve 232. One end of the threaded joint body 231 is provided with a fourth threaded boss 233, and the other end is provided with a fourth threaded inner groove 234. After such a configuration, only the water inlet pipe with the threaded boss can be installed. The water inlet pipe is installed inside the fourth threaded inner groove 234. The second support sleeve 232 limits the distance allowed for the water inlet pipe to be inserted. When the threaded joint assembly 23 needs to be installed on the filter body 1, only the fourth threaded boss 233 is required. The threaded boss 233 is threadedly connected to the inside of the third threaded inner groove 112, so that disassembly and assembly can be achieved; the second threaded inner groove 111 and the third threaded inner groove 112 are set to adapt to pipe fixing joints 2 of different sizes, and can be inserted into the second threaded inner groove 111 or the third threaded inner groove 112 according to different diameters. Moreover, whether it is connected to the inside of the second threaded inner groove 111 or the third threaded inner groove 112, the second threaded inner groove 111 can allow water to pass through, which will not affect the normal use of the entire filter body 1, bringing convenience to users when installing pipelines. ;

[0027] In this embodiment, a pipe assembly 3 is provided on the surface of the water outlet connecting column 12, and the pipe assembly 3 includes a first pipe 31, a second pipe 32 and a pipe connecting cover 33. One end of the first pipe 31 is connected to the water outlet connecting column 12, one end of the second pipe 32 is provided with a pipe plug 321, and the second pipe 32 is connected to the inside of the first pipe 31 through the pipe plug 321. The other end of the second pipe 32 is provided with a pipe connecting cover 33, and the pipe connecting cover 33 can be connected to the external water outlet pipe by means of threads.

[0028] Working principle and usage of this utility model:

[0029] First, select one from the quick-release joint assembly 21, the universal joint assembly 22 and the threaded joint assembly 23 to be threadedly connected to the water inlet connecting groove 11 of the filter body 1, and then connect the second pipe 32 to the inside of the first pipe 31 through the pipe plug 321. The other end of the second pipe 32 is provided with a pipe connection cover 33, and the pipe connection cover 33 can be connected to the external water outlet pipe through a threaded manner. The inner side of the upper end of the first pipe 31 is plugged on the outside of the second column 122, so that the anti-slip boss 124 causes the inner side of the external first pipe 31 to deform, increasing the friction force, making it difficult for the pipe to fall off. If it needs to be completely locked, only a clamp needs to be added to the outer side of the upper part of the first pipe 31.

[0030] When the quick-release connector assembly 21 is selected, the second threaded boss 213 is threadedly connected to the inside of the second threaded inner groove 111, so that the assembly between the quick-release connector assembly 21 and the filter body 1 can be achieved. Then, when installing the water inlet pipe into the quick-release connector assembly 21, the quick-release connector cover 212 is pushed down by hand, and the reset spring 214 will be deformed. The steel ball 216 has a certain activity range inside the horn hole 215. Then the external water inlet pipe can be directly inserted into the quick-release connector body 211. After releasing the quick-release connector cover 212, the reset spring 214 will make it move upward, so that the inner side wall of the quick-release connector cover 212 can limit the activity of the steel ball 216, so that the steel ball 216 will be squeezed with the side wall of the water inlet pipe to deform it to increase the friction force, thereby realizing the rapid installation of the water inlet pipe. The same is true for disassembly.

[0031] When the universal joint assembly 22 is selected, the third threaded boss 224 is threadedly connected to the inside of the third threaded inner groove 112 to achieve assembly between the universal joint assembly 22 and the filter body 1. When the external water inlet pipe needs to be installed, the threaded column 223 is rotated outward until the water inlet pipe can be inserted into the inside of the universal joint body 221 and the first support sleeve 222, and then the threaded column 223 is rotated inward to continuously press the water inlet pipe to increase the friction force, thereby achieving rapid installation of the water inlet pipe.

[0032] When the threaded joint assembly 23 is selected, the fourth threaded boss 233 is threadedly connected to the inside of the third threaded inner groove 112 to achieve assembly between the threaded joint assembly 23 and the filter body 1. When the external water inlet pipe needs to be installed, the water inlet pipe is installed inside the fourth threaded inner groove 234.

[0033] After selecting a pipe fixing joint 2 for installation, the external water can enter the interior of the filter body 1, wherein the filter screen 15 filters some magazines and floating objects. When the water flows into the water outlet connection column 12, the water flows from top to bottom into the interior of the valve column 41. At this time, the guide circular plate 42 will move downward under the impact of the water, and a gap will be left between the outer side of the guide circular plate 42 and the inner side of the valve column 41. That is to say, the guide chute 421 slides downward on the side wall of the guide column 412. After sliding a certain distance, the limiting boss 413 limits the maximum flow of the guide circular plate 42. Sliding distance, at this time, water can flow out freely through the gap, and whenever water refluxes, the water will first impact the guide plate 42, so that the guide groove 421 slides upward on the side wall of the guide column 412, so that there is no gap between the outer side of the guide plate 42 and the inner side of the valve column 41, and water basically cannot pass through the inside of the valve column 41, preventing water from flowing back into the inside of the valve column 41, and water cannot flow back into the inside of the filter body 1. Whenever the filter screen 15 needs to be removed, it only needs to rotate the filter housing 13 or the filter end cover 14 to open it, and the same applies to installation.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A filter assembly for a water inlet, comprising a filter body (1), characterized in that: A plurality of water inlet connection grooves (11) are provided at one end of the filter body (1), the diameters of each of the water inlet connection grooves (11) being different, the interior of the water inlet connection groove (11) with the smallest diameter being capable of allowing water to pass through, the interior of each of the water inlet connection grooves (11) being capable of being adapted to a pipeline fixed joint (2), a water outlet connection column (12) being capable of allowing water to pass through being provided at the other end of the filter body (1), a pipeline assembly (3) being provided on the surface of the water outlet connection column (12), a one-way valve (4) being provided inside the filter body (1) near the water outlet connection column (12), the one-way valve (4) being capable of limiting water from entering the interior of the water outlet connection column (12) into the interior of the filter body (1).

2. The filter assembly for the water inlet according to claim 1, characterized in that: The filter body (1) comprises a filter housing (13), a filter end cover (14) and a filter screen (15); a first threaded boss (131) is provided on the outside of one end of the filter housing (13); a plurality of water inlet connection grooves (11) are provided on the outside of the other end of the filter housing (13); a first threaded inner groove (141) is provided on the inside of one end of the filter end cover (14); and a water outlet connection column (12) is integrally provided on the outer surface of the end face of the filter end cover (14); the first threaded boss (131) is connected to the inside of the first threaded inner groove (141); and the filter screen (15) is arranged inside the filter housing (13).

3. The filter assembly for the water inlet according to claim 2, characterized in that: The water inlet connection groove (11) comprises a second threaded inner groove (111) and a third threaded inner groove (112); the water outlet connection column (12) comprises a first column (121) and a second column (122) having different diameters; a valve body installation groove (123) is provided inside the first column (121); the one-way valve (4) is arranged inside the valve body installation groove (123); and a plurality of anti-slip bosses (124) are provided outside the second column (122).

4. The filter assembly for the water inlet according to claim 3, characterized in that: The one-way valve (4) comprises a valve column (41) and a guide circular plate (42); one end of the guide circular plate (42) is provided with a guide groove (421); the interior of the valve column (41) is hollow and a column groove (411) is provided on the side wall; a guide column (412) is provided on the surface of the column groove (411); the guide column (412) is slidably connected to the interior of the guide groove (421); and limiting bosses (413) are provided on both sides of the end of the guide column (412); the limiting bosses (413) can prevent the guide circular plate (42) from sliding off the guide column (412).

5. The filter assembly for the water inlet according to claim 3, characterized in that: The pipe fixed joint (2) comprises a quick-release joint assembly (21), a universal joint assembly (22) and a threaded joint assembly (23); the quick-release joint assembly (21) can be threadedly connected to the interior of the second threaded inner groove (111); and the universal joint assembly (22) and the threaded joint assembly (23) can be threadedly connected to the interior of the third threaded inner groove (112).

6. The filter assembly for the water inlet according to claim 5, characterized in that: The quick-release joint assembly (21) comprises a quick-release joint cover (212), a quick-release joint body (211), a return spring (214) and a steel ball (216); one end of the quick-release joint body (211) is sleeved with the quick-release joint cover (212); the other end of the quick-release joint body (211) is provided with a second threaded boss (213); the quick-release joint body (211) and the quick-release joint cover (212) are directly provided with a return spring (214); a plurality of trumpet holes (215) are provided inside a side wall of the quick-release joint body (211); a steel ball (216) is provided inside each trumpet hole (215); the trumpet holes (215) can limit the steel ball (216) from sliding into the inside of the quick-release joint body (211); and the quick-release joint cover (212) can limit the steel ball (216) from sliding outside the quick-release joint body (211).

7. The filter assembly for the water inlet according to claim 5, characterized in that: The universal joint assembly (22) comprises a universal joint body (221), a first support sleeve (222) and a threaded column (223); the first support sleeve (222) is provided inside the universal joint body (221); the threaded column (223) is provided on the surface of the side wall of the universal joint body (221); and a third threaded boss (224) is provided at one end of the universal joint body (221).

8. The filter assembly for the water inlet according to claim 5, characterized in that: The threaded joint assembly (23) comprises a threaded joint body (231) and a second support sleeve (232); the second support sleeve (232) is provided inside the threaded joint body (231); one end of the threaded joint body (231) is provided with a fourth threaded boss (233), and the other end is provided with a fourth threaded inner groove (234).

9. The filter assembly for the water inlet according to claim 5, characterized in that: The pipeline assembly (3) comprises a first pipeline (31), a second pipeline (32) and a pipeline connection cover (33); one end of the first pipeline (31) is connected to a water outlet connection column (12); one end of the second pipeline (32) is provided with a pipeline plug (321); the second pipeline (32) is connected to the inside of the first pipeline (31) via the pipeline plug (321); the other end of the second pipeline (32) is provided with a pipeline connection cover (33); the pipeline connection cover (33) can be connected to an external water pipe.

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