Filter structure, liquid storage box assembly and washing equipment

Abstract

The present invention relates to the field of washing, and specifically provides a filter mesh structure, a liquid storage box assembly, and a washing device, which are intended to solve the problem of foreign matter entering the pipeline and blocking components when adding detergent. To this end, the filter mesh structure includes: a primary filter mesh body and a secondary filter mesh body, the primary filter mesh body is a cylindrical structure, the cylindrical structure has a bottom, a liquid filling port, and an annular side wall, and primary filter holes are formed on the bottom and the annular side wall respectively; the secondary filter mesh body extends between the bottom and the proximal end, and secondary filter holes are formed on the secondary filter mesh body, so that the target liquid injected from the liquid filling port can flow out from the secondary filter mesh body after being filtered by the primary filter mesh body; the invention can effectively filter foreign matter mixed in the detergent to prevent it from entering the pipeline and causing the components to be stuck or blocked.

Description

Technical Field

[0001] The present invention relates to the field of washing, and specifically provides a filter screen structure, a liquid storage box assembly and washing equipment. Background Art

[0002] With the improvement of people's living standards, washing machines have become a common household appliance in people's daily lives. Depending on the washing method, washing machines can be divided into various types, such as drum type, agitator type, and pulsator type. Taking a pulsator type washing machine as an example, this washing machine includes a control system, a drive motor, a pulsator, a washing chamber, a water inlet and drainage system, and a liquid storage box. The liquid storage box is used to store detergent and specifically includes a filling port, a liquid storage chamber, and a liquid feed port. When washing clothes, the user simply places the clothes in the washing chamber and sets the washing program through the control system. The washing machine automatically fills the washing chamber with water and detergent according to the amount of clothes, starts the drive motor to rotate the pulsator, and automatically washes the clothes in the washing chamber. During daily use and maintenance, the user only needs to regularly refill the liquid storage box with detergent. This effectively improves washing efficiency and reduces the burden of housework. However, a major problem with the liquid storage box of current washing machines is that the filling port of the liquid storage box lacks an effective filtering structure. Therefore, when customers add detergent, foreign objects are easily mixed in. Once foreign objects enter the pipeline, they can easily get stuck in internal components (such as valves, pumps, etc.), causing after-sales problems such as overflow, and triggering customer complaints.

[0003] In order to solve the above problems, a liquid storage box with a filtering structure has been developed in the prior art. For example, Chinese invention patent application CN106868799A discloses an automatic detergent dispensing device and a washing machine. The automatic detergent dispensing device includes a dispensing body, a dispensing cavity is provided on the dispensing body, and a detachable filter is arranged on the adding port of the dispensing cavity; the filter is provided with a pressure cover that is engaged with the adding port on the side away from the adding port, and the filter is fixed between the adding port and the pressure cover by the pressure cover. When adding detergent, the liquid flows in from the filling port, passes through the filter, and then flows out from the liquid feeding port; foreign matter mixed in can be effectively filtered; and the foreign matter can be conveniently removed by disassembling the filter. However, the structure of the filter is relatively simple, and the filtering effect needs to be improved. Therefore, there is room for improvement in this technology.

[0004] Accordingly, this field requires a new technical solution to solve the above technical problems. Summary of the Invention

[0005] In order to solve the technical problem in the prior art that the filling port of a liquid storage box lacks an effective filtering structure, which makes it easy for foreign matter to mix in when adding detergent, causing pipeline blockage, the present invention provides a filter mesh structure. The filter mesh structure has opposite distal and proximal ends and includes: a primary filter mesh body, the primary filter mesh body being a cylindrical structure having a bottom, a liquid filling port located at the distal end, and an annular sidewall extending from the bottom to the distal end, with primary filter holes formed in the bottom and the annular sidewall respectively; and a secondary filter mesh body, the secondary filter mesh body extending between the bottom and the proximal end and having secondary filter holes formed in the secondary filter mesh body, so that the target liquid injected from the liquid filling port can flow out of the secondary filter mesh body after being filtered by the primary filter mesh body.

[0006] The filter mesh structure of the present invention has a relative distal end and a proximal end, and includes a primary filter mesh body and a secondary filter mesh body. The primary filter mesh body is a cylindrical structure. The cylindrical structure has a bottom, a liquid adding port located at the distal end, and an annular side wall extending from the bottom to the distal end, with primary filter holes formed on the bottom and the annular side wall, respectively. Through the above configuration, the target liquid can quickly seep through the primary filter holes after being injected from the liquid adding port, and foreign matter mixed into the target liquid can be filtered for the first time by the bottom and the annular side wall of the primary filter mesh body. The secondary filter mesh body extends between the bottom and the proximal end, and secondary filter holes are formed on the secondary filter mesh body. Through the above configuration, the target liquid can quickly flow out from the secondary filter holes after seeping through the primary filter holes, so foreign matter mixed into the target liquid can be filtered for the second time by the secondary filter mesh body.

[0007] In a preferred embodiment of the filter structure, the filter structure further comprises a plate-shaped colander structure formed at the proximal end. With this configuration, when the target liquid at the bottom of the liquid reservoir becomes viscous, the filter structure of the present invention can be repeatedly lifted and pressed by hand, thereby utilizing the plate-shaped colander structure to disperse the viscous target liquid at the bottom of the liquid reservoir to ensure the flow rate of the target liquid.

[0008] In the preferred technical solution of the above-mentioned filter screen structure, a plurality of connecting plates separated from each other are provided between the bottom and the plate-like colander-like structure so as to form a predetermined space between the connecting plates. The connecting plates can improve the structural strength between the primary filter screen body and the plate-like colander-like structure, and can more stably and effectively transmit the force to the plate-like colander-like structure when the filter screen structure of the present invention is repeatedly lifted and pressed. The target liquid seeping out of the primary filter screen body is collected and fills the above-mentioned predetermined space. When the target liquid flows out of the liquid storage box quickly, the target liquid collected in the predetermined space can be replenished in time to avoid the target liquid from entraining air when it flows out. At the same time, when the filter screen structure of the present invention is repeatedly lifted and pressed, the target liquid that becomes viscous at the bottom of the liquid storage box is separated and can enter the predetermined space to be reused.

[0009] In a preferred embodiment of the filter structure, the filter structure further includes a handle at the distal end, extending outwardly away from the end surface of the liquid filling port. This configuration allows the handle to be elevated above the liquid filling port. Therefore, when injecting the target liquid into the liquid filling port, the target liquid does not directly contact the handle. Furthermore, when removing or placing the filter structure, the user can avoid direct contact of the target liquid with their fingers, effectively protecting their hands. The handle also remains dry, making it easier to remove and place the filter structure by hand.

[0010] In the preferred technical solution of the filter structure, the end of the handle away from the liquid filling port is folded outward to form a grip portion, which facilitates the user to apply force when pulling or pressing.

[0011] In a preferred technical solution of the upper filter structure, a gripping through hole is provided on the handle. When a user pinches the handle with fingers, the gripping through hole can accommodate the pads of the fingers, making it easier for the user to pull it upward.

[0012] In a preferred embodiment of the filter structure, the annular sidewall comprises a multi-step cylindrical wall, the diameter of which gradually decreases from the distal end to the proximal end. With this configuration, the target liquid injected from the liquid inlet flows sequentially from the distal end through the multi-step cylindrical wall and seeps through the primary filtration holes of the multi-step cylindrical wall. As the diameter of the cylindrical wall decreases, the cross-sectional area in the target liquid flow direction gradually decreases, allowing more target liquid to seep through the annular sidewall, thereby achieving rapid seepage of the target liquid.

[0013] In the preferred technical solution of the filter screen structure, the annular side wall has a three-level stepped cylindrical wall. Through the above configuration, the seepage speed of the target liquid from the annular side wall can be guaranteed while ensuring the simplicity and efficiency of the processing technology.

[0014] In a preferred embodiment of the filter structure, the secondary filter body comprises an arcuate wall, and an opening is formed between the arcuate wall and the bottom. With this configuration, when the target liquid rapidly flows out of the liquid storage box, the opening facilitates faster and more efficient replenishment and collection of the target liquid into the predetermined space, thereby ensuring that sufficient target liquid is available for outflow within the predetermined space and preventing the entrainment of air by the target liquid during outflow.

[0015] In the preferred technical solution of the filter screen structure, a hollow liquid level mark is further provided at the distal end. Through the above configuration, after the target liquid is injected, the liquid level after the target liquid is added can be conveniently visually observed from the hollow portion.

[0016] The present invention also provides a liquid storage box assembly, comprising: a liquid storage box, the liquid storage box being provided with a target liquid filling port and a liquid inlet connected to the target liquid filling port; and a filter screen structure according to any of the above, the filter screen structure being configured to be inserted into the target liquid filling port, and the secondary filter screen body being matched with the liquid inlet, so that the target liquid enters the liquid inlet after being filtered by the primary filter screen body and the secondary filter screen body. This configuration ensures that the target liquid injected from the liquid inlet is filtered twice by the primary filter screen body and the secondary filter screen body, and foreign matter mixed in the target liquid can be effectively filtered.

[0017] The present invention also provides a washing machine comprising the aforementioned liquid storage box assembly. This configuration effectively filters foreign matter that enters the washing liquid during injection; when foreign matter is present, it can be easily removed by removing and placing the filter, effectively preventing after-sales problems such as water overflow caused by foreign matter entering the pipeline and blocking internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a rear perspective schematic diagram of an embodiment of the filter screen structure of the present invention;

[0020] Figure 2 yes Figure 1 A front perspective schematic diagram of an embodiment of a filter screen structure of the present invention is shown;

[0021] Figure 3 yes Figure 1 A top perspective schematic diagram of an embodiment of a filter screen structure of the present invention is shown;

[0022] Figure 4 1 is a perspective schematic diagram of a liquid storage box in one embodiment of a liquid storage box assembly of the present invention;

[0023] Figure 5 yes Figure 4 The schematic cross-sectional view of a liquid storage box in one embodiment of the liquid storage box assembly of the present invention is shown;

[0024] Figure 6 yes Figure 4 The bottom view of the lower cover of the liquid storage box in one embodiment of the liquid storage box assembly of the present invention is shown;

[0025] Figure 7 In one embodiment of the liquid storage box assembly of the present invention, after the liquid storage box lower cover and the filter screen structure are combined, Figure 6 Schematic diagram of the cross section obtained by half sectioning along the AA section line;

[0026] Figure 8 yes Figure 7 Enlarged schematic diagram of point B in the middle.

[0027] List of reference numerals:

[0028] 1. Filter structure; 1a. Primary filter body; 1b. Distal end; 1c. Proximal end; 11. Liquid filling port; 111. Limiting ring; 112. Hollow liquid level mark; 12. Annular sidewall; 121. First stepped cylindrical wall; 122. Second stepped cylindrical wall; 123. Third stepped cylindrical wall; 124. Primary filter hole; 125. Horizontal divider; 125', bottom horizontal divider; 126. Vertical divider; 127. Reinforcement rib; 127', bottom reinforcement rib; 13. Bottom; 2 a. Secondary filter mesh body; 21. Arc-shaped wall; 22. Secondary filter hole; 3a. Plate-shaped colander-type structure; 31. Base plate; 32. Drain trough; 4a. Handle; 41. Upper end surface; 42. Grip portion; 43. Grip through hole; 51. First liquid replenishing port; 52. Second liquid replenishing port; 6. Connecting plate; 61. Middle plate; 62. Side plate; 7. Liquid storage box assembly; 7a. Liquid storage box; 71. Upper cover; 711. Detergent filling port; 72. Lower cover; 721. Inner bottom of liquid storage chamber; 722. Liquid feeding port. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] It should be noted that in the description of the present invention, terms such as "upper," "lower," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for ease of description and are not intended to indicate or imply that the device or component described must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "assemble," "dispose," and "connect" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] To address the technical problem in the prior art that the filling port of a liquid storage box lacks an effective filtering structure, which results in foreign matter easily being mixed in when adding detergent, causing pipe obstruction, the present invention provides a filter mesh structure 1. The filter mesh structure 1 has a distal end 1b and a proximal end 1c opposite each other, and includes: a primary filter mesh body 1a, which is a cylindrical structure having a bottom 13, a liquid filling port 11 located at the distal end 1b, and an annular sidewall 12 extending from the bottom 13 to the distal end 1b, with primary filter holes 124 formed in each of the bottom 13 and the annular sidewall 12; and a secondary filter mesh body 2a, which extends between the bottom 13 and the proximal end 1c and has secondary filter holes 22 formed in the secondary filter mesh body 2a. The target liquid injected from the liquid filling port 11 is filtered by the primary filter mesh body 1a and then flows out of the secondary filter mesh body 2a. The filter mesh structure 1 of the present invention can cause the target liquid to be filtered twice: after the target liquid is injected from the liquid filling port 11, it can quickly seep out from the primary filter hole 124, and the foreign matter mixed in the target liquid can undergo the first filtration when flowing through the bottom 13 of the primary filter mesh body 1a and the primary filter hole 124 on the annular side wall 12; after the target liquid seeps out from the primary filter hole 124, it quickly flows out from the secondary filter hole 22, and the foreign matter mixed in the target liquid therefore undergoes the second filtration of the secondary filter hole 22 of the secondary filter mesh body 2a.

[0033] Unless otherwise expressly indicated, the "distal end" of a filter structure as referred to herein refers to the end closest to the user during use; conversely, the "proximal end" of a filter structure as referred to herein refers to the end inserted into the fluid reservoir during use. Unless otherwise expressly indicated, a "colander-like structure" as referred to herein refers to a structure having a plurality of through-holes or slots that allow fluid to pass from one side of the structure to the opposite side through these through-holes or slots. Unless otherwise expressly indicated, the "longitudinal" as referred to herein refers to the direction extending between the distal and proximal ends of the filter structure, and the "transverse" as referred to herein refers to a direction perpendicular to the longitudinal direction.

[0034] Figure 1 It is a rear perspective schematic diagram of an embodiment of the filter screen structure of the present invention; Figure 2 yes Figure 1 A front perspective schematic diagram of an embodiment of a filter screen structure of the present invention is shown; Figure 3 yes Figure 1 FIG. 1 is a top perspective schematic diagram of an embodiment of a filter screen structure of the present invention.

[0035] like Figure 1 and Figure 2 As shown, in one or more embodiments, the filter screen structure 1 of the present invention has a distal end 1b and a proximal end 1c, and includes: a primary filter screen body 1a, a secondary filter screen body 2a, a plate-shaped colander-like structure 3a, and a handle 4a. In one or more embodiments, the filter screen structure 1 is formed from polypropylene (PP plastic) by a single injection molding process. Alternatively, the filter screen structure 1 may be made from other suitable thermoplastic resins, including but not limited to polyethylene, polyvinyl chloride, polypropylene, or polystyrene. The primary filter screen body 1a extends from the distal end 1b toward the proximal end 1c. The plate-shaped colander-like structure 3a is located at the proximal end 1c, while the handle 4a is located at the distal end 1b. The handle 4a is directly connected to the primary filter screen body 1a and is integrally formed with the primary filter screen body 1a. Alternatively, the handle 4a may be manufactured separately from the primary filter screen body 1a and then joined together by a suitable method such as welding. The secondary filter screen body 2a is positioned between the primary filter screen body 1a and the plate-shaped colander-like structure 3a and is connected to both. Along the longitudinal direction of the filter mesh structure 1 , the secondary filter mesh body 2 a separates the primary filter mesh body 1 a from the plate-shaped colander structure 3 a.

[0036] In one or more embodiments, spaced-apart connecting plates 6 are provided between the plate-shaped colander structure 3a and the primary filter body 1a, thereby forming a predetermined space between the connecting plates 6. Herein, the predetermined space may also be referred to as a refill space. On the one hand, this predetermined space can be used to collect and store detergent that seeps out of the primary filter body 1a. When the detergent is pumped out of the liquid reservoir, the predetermined space provides sufficient detergent, thereby preventing air from being entrained during the rapid outflow of the detergent. On the other hand, the predetermined space can store the separated, viscous detergent for reuse. In one or more embodiments, the connecting plates 6 may be parallel to each other and spaced the same distance apart. Alternatively, the connecting plates 6 may be non-parallel or spaced at different distances apart. In one or more embodiments, there are three connecting plates 6: a middle plate 61 and two side plates 62 located on either side of the middle plate 61. Alternatively, the connecting plates 6 may be of any other suitable number, such as one or two.

[0037] like Figure 1 and Figure 2 As shown, the primary filter body 1a is a cylindrical structure. In one or more embodiments, the primary filter body 1a is a straight cylindrical structure. Alternatively, the primary filter body 1a can also be a truncated cone or a conical cylindrical structure.

[0038] like Figure 1-Figure 3 As shown, the cylindrical structure of the primary filter body 1a has a bottom 13, a liquid filling port 11 located at the distal end 1b, and an annular side wall 12 extending from the bottom 13 to the distal end 1b. In one or more embodiments, the annular side wall 12 has three stepped cylindrical walls connected in sequence, which are a first stepped cylindrical wall 121, a second stepped cylindrical wall 122, and a third stepped cylindrical wall 123 in the direction from the distal end 1b toward the proximal end 1c. The diameters of these three stepped cylindrical walls gradually decrease in the direction from the distal end 1b to the proximal end 1c. Alternatively, the annular side wall 12 is an annular wall without steps, or an annular wall with one step, or an annular wall with two steps, or an annular wall with more than three steps. The liquid filling port 11 is located on the side of the first stepped cylindrical wall 121 located at the distal end 1b, and is used to inject, for example, detergent. In one or more embodiments, an outwardly protruding stop ring 111 is provided at the location of the liquid filling port 11. In one or more embodiments, a hollowed-out liquid level mark 112, such as a hollowed-out MAX mark, is provided at the bottom of the liquid filling port 11 to facilitate visual inspection of the target liquid level after injection. The third stepped cylindrical wall 123 is directly connected to the bottom 13, and the bottom 13 extends transversely to the annular side wall 12.

[0039] like Figure 1-Figure 3As shown, a plurality of primary filter holes 124 are formed on the annular side wall 12 and the bottom 13, respectively. On the annular side wall 12, the primary filter holes 124 are formed by a plurality of transverse partition bars 125 that are parallel to each other and extend laterally, and longitudinal partition bars 126 that extend longitudinally and are spaced from each other. Therefore, the primary filter holes on the annular side wall 12 form a filter grid for achieving a primary filtration of the detergent. In one or more embodiments, a portion of the longitudinal partition bars 126 protrude toward the longitudinal center of the filter structure 1 on the inner wall of the annular side wall 12, forming a reinforcing rib 127. This enhances the structural strength of the filter grid. Similarly, a plurality of primary filter holes 124 are also formed on the bottom 13, which are separated by the bottom transverse partition bars 125' and the bottom reinforcing ribs 127' and constitute a filter grid. In one or more embodiments, 128 primary filter holes 124 are formed on the first stepped cylindrical wall 121, 90 primary filter holes 124 are formed on the second stepped cylindrical wall 122, and 80 primary filter holes 124 are formed on the third stepped cylindrical wall 123; 24 primary filter holes 124 are formed on the bottom 13. Therefore, the primary filter mesh body 1a has all 322 primary filter holes, so that rapid leakage and rapid exhaust of detergent can be achieved, and accumulation and overflow of laundry liquid can be avoided. Alternatively, the primary filter mesh body 1a may have more or less than 322 primary filter holes 124. In one or more embodiments, the diameter of the primary filter hole 124 is in the range of 1.8mm-2mm, so it can effectively block foreign matter with a diameter of more than 1.8mm.

[0040] like Figure 3 As shown, in one or more embodiments, the secondary filter mesh body 2a is an arcuate wall 21 extending from the outer edge of the plate-like colander structure 3a toward the bottom 13. Alternatively, the secondary filter mesh body 2a is formed as a straight wall or a wall of other suitable shapes. A plurality of secondary filter holes 22 are formed on the arcuate wall 21. In one or more embodiments, the secondary filter holes 22 are arranged in two rows along the longitudinal direction. Optionally, one or more reinforcing ribs (not shown) can be formed on the inner side of the arcuate wall 21. In one or more embodiments, the connecting plate 6 extending between the bottom 13 of the primary filter mesh body 1a and the plate-like colander structure 3a extends to the secondary filter mesh body 2a in the transverse direction, wherein the two side plates 62 extend to the sides of the arcuate wall 21 respectively, and the middle plate 61 extends to the middle of the two rows of secondary filter holes 22. Therefore, the connecting plate 6 also plays a supporting role for the secondary filter mesh body 2a. In one or more embodiments, a first liquid replenishing port 51 is formed between the upper edge of the arc-shaped wall 21 and the outer edge of the bottom 13. The first liquid replenishing port 51 is connected to the liquid replenishing space between the connecting plates 6 to facilitate rapid passage of detergent.

[0041] like Figure 2As shown, in one or more embodiments, the plate-shaped colander-like structure 3a located at the proximal end 1c has a roughly disc-shaped base plate 31 and a plurality of drain grooves 32 formed on the base plate 31. The drain grooves 32 are formed by a plurality of partition bars parallel to each other, and the drain grooves 32 pass through the base plate 31, so that these drain grooves 32 together form a distribution grid. Alternatively, the base plate 31 may also adopt other shapes that match the liquid storage box. In one or more embodiments, one or more reinforcing ribs (not shown in the figure) are provided on the upper surface of the base plate 31 (i.e., the surface facing the bottom 13). These reinforcing ribs may be perpendicular to the partition bars to enhance the structural strength of the distribution grid. As shown Figure 1 As shown, in one or more embodiments, a second liquid replenishing port 52 is formed above the plate-shaped colander structure 3a and between each side plate 62 and the corresponding side edge of the secondary filter body 2a to facilitate rapid passage of detergent.

[0042] like Figure 1-Figure 3 As shown, the handle 4a at the distal end 1b extends outward away from the end surface of the liquid filling port 11, so that the upper end surface 41 of the handle 4a is higher than the liquid filling port 11. In one or more embodiments, the end of the handle 4a away from the liquid filling port 11 is folded outward 90 degrees to form a grip portion 42, which facilitates the user to apply force when lifting or pressing. In one or more embodiments, an elliptical gripping hole 43 is provided on the handle 4a. When the user pinches the handle 4a with their fingers, the gripping hole 43 can accommodate the pads of the fingers, making it easier for the user to pull upward.

[0043] During use of the above-mentioned filter mesh structure 1, detergent is injected from the liquid filling port 11 and quickly seeps out from the primary filter hole 124. Foreign matter is filtered for the first time when passing through the annular side wall 12 and bottom 13 of the primary filter mesh body 1a; the detergent that seeps through then seeps out from the secondary filter hole 22, and foreign matter is filtered for the second time when passing through the secondary filter mesh body 2a.

[0044] In an alternative embodiment, the filter structure 1 of the present invention includes a primary filter body 1a, a plate-shaped colander structure 3a, and a handle 4a, but omits the secondary filter body 2a. In this embodiment, the configurations of the primary filter body 1a, the plate-shaped colander structure 3a, and the handle 4a may be the same or similar to those of the previous embodiment.

[0045] Figure 4 1 is a perspective schematic diagram of a liquid storage box in one embodiment of a liquid storage box assembly of the present invention; Figure 5 yes Figure 4 The schematic cross-sectional view of a liquid storage box in one embodiment of the liquid storage box assembly of the present invention is shown;

[0046] Figure 6 yes Figure 4 The bottom view of the lower cover of the liquid storage box in one embodiment of the liquid storage box assembly of the present invention is shown; Figure 7 In one embodiment of the liquid storage box assembly of the present invention, after the liquid storage box lower cover and the filter screen structure are combined, Figure 6 Schematic diagram of the cross section obtained by half sectioning along the AA section line; Figure 8 yes Figure 7 Enlarged schematic diagram of point B in the middle.

[0047] like Figure 4-8 As shown, the present invention further provides a liquid storage box assembly 7, which includes a liquid storage box 7a and a filter screen structure 1 according to any of the above embodiments.

[0048] like Figure 4-Figure 6 As shown, the liquid storage box 7a includes an upper cover 71 and a lower cover 72. After the upper cover 71 and the lower cover 72 are assembled relative to each other, a liquid storage cavity is formed between the upper cover 71 and the lower cover 72. A detergent filling port 711 is provided on the upper cover 71. Figure 5 As shown, a liquid storage chamber bottom 721 is provided on the lower cover 72. A liquid inlet 722 is provided on the sidewall of the liquid storage chamber bottom 721. The detergent filling port 711 is connected to the liquid inlet 722. In one or more embodiments, the liquid inlet 722 is oriented perpendicular to the axial direction of the liquid storage chamber.

[0049] like Figure 7 and Figure 8 As shown, the filter structure 1 is configured to be inserted into the detergent filling port 711. The secondary filter mesh 2a matches the liquid inlet 722, ensuring that the detergent flowing into the liquid inlet 722 must first flow through the secondary filter mesh 2a, so that the detergent enters the liquid inlet 722 after being filtered by the primary filter mesh 1a and the secondary filter mesh 2a. Figure 7 As shown by the dotted arrow, after detergent is injected through detergent filling port 711, it seeps through the annular sidewall 12 and bottom 13 of primary filter mesh 1a through primary filter holes 124. After being filtered by primary filter mesh 1a, the detergent rapidly flows through primary filter holes 124, first and second refill ports 51, 52, and collects in the predetermined space. It is then filtered through secondary filter mesh 2a before flowing out of liquid inlet 722. This double filtration effectively prevents foreign matter from entering the pipeline and blocking internal components. The predetermined space allows sufficient detergent to accumulate in a timely manner, preventing air from being entrained during the rapid outflow of detergent.

[0050] The upper surface of the liquid storage chamber inner bottom 721 is in contact with the lower surface of the base plate 31 of the plate-like colander structure 3a, so that when the filter screen structure 1 is assembled in the liquid storage box 7a, there is no gap or a very small gap between the upper surface of the liquid storage chamber inner bottom 721 and the lower surface of the base plate 31 of the plate-like colander structure 3a. When the upper surface of the liquid storage chamber inner bottom 721 is a flat surface, the lower surface of the base plate 31 is also a flat surface. When the upper surface of the liquid storage chamber inner bottom 721 is an arc-shaped surface, the lower surface of the base plate 31 is also a matching arc-shaped surface. When the detergent on the liquid storage chamber inner bottom 721 becomes viscous, by holding the filter screen structure 1 of the present invention and repeatedly lifting and pressing it, the plate-like colander structure 3a can be used to separate the viscous detergent on the liquid storage chamber inner bottom 721 to ensure the flow rate of the target liquid. The separated detergent is reduced in size and can flow into the predetermined space, or enter the liquid feeding port 722 along with the detergent in the predetermined space to participate in washing again, or be blocked and filtered by the secondary filter mesh 2a to avoid clogging the pipeline.

[0051] In one or more embodiments, the detergent filling port 711 on the liquid storage box 7a is provided with a limiting mechanism (not shown). This limiting mechanism can mate with the limiting ring 111 at the liquid filling port 11. When the filter structure 1 is assembled on the liquid storage box 7a, the limiting ring 111 also helps support and secure the filter structure 1 at the detergent filling port 711.

[0052] The present invention further provides a washing device (not shown in the drawings), which includes the above-mentioned liquid storage box assembly 7. In one or more embodiments, the liquid storage box assembly 7 can be detachably assembled on the washing device. Alternatively, the liquid storage box assembly 7 can also be integrated and assembled on the washing device.

[0053] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A filter screen structure, characterized in that: The filter structure has opposing distal and proximal ends and includes: a primary filter mesh body, the primary filter mesh body being a cylindrical structure having a bottom, a liquid filling port at the distal end, and an annular sidewall extending from the bottom to the distal end, primary filter holes being formed on the bottom and the annular sidewall respectively; and a secondary filter mesh body extending between the bottom and the proximal end and having secondary filter holes formed thereon, so that the target liquid injected from the liquid filling port can flow out of the secondary filter mesh body after being filtered by the primary filter mesh body; Wherein, the filter screen structure further includes a plate-shaped colander structure formed at the proximal end.

2. The filter screen structure according to claim 1, characterized in that: A plurality of connecting plates spaced apart from each other are provided between the bottom and the plate-shaped colander structure so as to form a predetermined space between the connecting plates.

3. The filter screen structure according to claim 1 or 2, characterized in that: The filter structure further includes a handle located at the distal end, wherein the handle extends outwardly away from the end surface of the liquid filling port.

4. The filter screen structure according to claim 1 or 2, characterized in that: The annular side wall has a multi-step cylindrical wall, and the diameter of the multi-step cylindrical wall gradually decreases along the direction from the distal end to the proximal end.

5. The filter screen structure according to claim 4, characterized in that: The annular side wall has a three-step cylindrical wall.

6. The filter screen structure according to claim 1 or 2, characterized in that: The secondary filter body is an arc-shaped wall, and an opening is formed between the arc-shaped wall and the bottom.

7. The filter screen structure according to claim 1 or 2, characterized in that: A hollow liquid level mark is also provided at the distal end.

8. A liquid storage box assembly, characterized in that: The liquid storage box assembly includes: a liquid storage box, provided with a target liquid filling port and a liquid feeding port communicating with the target liquid filling port; and According to the filter screen structure according to any one of claims 1 to 7, the filter screen structure is configured to be inserted into the target liquid filling port, and the secondary filter screen body matches the liquid feeding port, so that the target liquid enters the liquid feeding port after being filtered by the primary filter screen body and the secondary filter screen body.

9. A washing device, characterized in that: The washing device comprises the liquid storage box assembly according to claim 8.

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