Pre-filter and water system

Abstract

The utility model discloses a pre-filter and a water system, and relates to the technical field of water purification equipment, the pre-filter comprises a shell, a filter assembly and an outer framework; the shell is provided with a water inlet, a water outlet and a water filtering cavity communicated with the water inlet and the water outlet; the filtering assembly is arranged in the water filtering cavity; the outer framework is rotatably arranged in the water filtering cavity and arranged outside the filtering assembly in a sleeving manner, the outer framework is provided with a water flow driving part, the water flow driving part is provided with a driving surface, and the driving surface is arranged at an included angle relative to the circumferential direction of the outer framework, so that the driving surface can drive the outer framework to rotate after being impacted by water flow. According to the technical scheme, the outer framework is driven to rotate through the water flow driving piece, water flow is stirred, impurity attachment is reduced, and the filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a pre-filter and a water use system. Background Art

[0002] Conventional prefilters include a housing and a filter assembly disposed within the housing. During use, water flows from the water inlet into the filter chamber, is filtered by the filter assembly, and then flows to the water outlet. However, while the prefilter is filtering the water, impurities may accumulate within the filter chamber, particularly on the surface of the filter assembly. Over time, these impurities may clog the filter assembly, reducing its filtering effectiveness. Utility Model Content

[0003] The main purpose of the utility model is to provide a pre-filter and water use system, which aims to drive the outer frame to rotate through a water flow driving member, stir the water flow, reduce impurity adhesion, and improve the filtering effect.

[0004] To achieve the above-mentioned purpose, the pre-filter proposed by the present invention comprises:

[0005] The shell is provided with a water inlet, a water outlet and a water filtering cavity communicating with the water inlet and the water outlet;

[0006] A filter assembly, the filter assembly being disposed in the water filter chamber; and

[0007] The exoskeleton is rotatably disposed in the water filter chamber and is sleeved on the outside of the filter assembly. The exoskeleton is provided with a water flow driving component. The water flow driving component has a driving surface. The driving surface is arranged at an angle relative to the circumference of the exoskeleton, so that the driving surface can drive the exoskeleton to rotate after being impacted by the water flow.

[0008] In one embodiment, the outer frame includes side frames enclosed along the circumferential direction, and the water flow driving member is arranged at an end of the side frame close to the water inlet.

[0009] In one embodiment, the outer frame includes side frames enclosed along the circumferential direction, and the water flow driving member is clamped to the end of the side frame.

[0010] In one embodiment, the water flow driving member includes a hanging portion, which is hung on the end of the side frame and is clamped with the side frame.

[0011] In one embodiment, an escape groove is provided at the end of the side frame, and the hanging portion is hung in the escape groove.

[0012] In one embodiment, the hanging portion includes a first wall body and a second wall body that are radially spaced relative to each other along the side frame, the first wall body and the second wall body are connected at one end close to the water inlet, and the side frame is adapted to be inserted between the first wall body and the second wall body; and / or, the first wall body is adapted to be clamped in the avoidance groove.

[0013] In one embodiment, a groove wall of the avoidance groove is provided with a locking protrusion, the first wall body is provided with a buckle opening, and the locking protrusion is locked in the buckle opening.

[0014] In one embodiment, surfaces on different sides of the first wall are correspondingly arranged flush with the outer peripheral wall and / or end wall of the side frame.

[0015] In one embodiment, the water flow driving component further includes a driving body connected to the hanging portion, the driving body is hung on the inner side of the side frame, the hanging portion is engaged with the outer side of the side frame, and the driving surface is formed on the driving body.

[0016] In one embodiment, an avoidance groove is provided at the end of the side frame, a latching protrusion is provided on the groove wall of the avoidance groove, the latching protrusion is arranged on the outer side of the side frame, the hanging portion is provided with a buckle opening, the hanging portion is hung on the avoidance groove, and the latching protrusion is locked in the buckle opening.

[0017] In one embodiment, the driving surface is parallel to the axial direction of the outer skeleton.

[0018] In one embodiment, the exoskeleton includes a side frame enclosed along the circumferential direction, and the water flow driving component includes a driving body arranged in a conformal manner with the inner circumferential wall of the side frame. The driving body extends in an arc shape along the circumference of the side frame and has a plurality of water baffles distributed at intervals, and the driving surface is formed on the water baffle.

[0019] In one embodiment, the circumferential width of the water baffle on the side frame is between 0.8 mm and 1.2 mm, the radial length of the water baffle on the side frame is between 1.6 mm and 2.4 mm, and the axial length of the water baffle on the side frame is between 5 mm and 7 mm.

[0020] In one embodiment, the pre-filter further comprises a water distributor, which is arranged closer to the water inlet than the water flow driving component, and has a plurality of guide blades distributed circumferentially on the water distributor and inclined relative to the axial direction.

[0021] In one embodiment, the outer frame is provided with a plurality of the water flow driving members, and the plurality of the water flow driving members are distributed at intervals along the circumference of the outer frame.

[0022] The present invention also provides a water use system, which includes the pre-filter as described above.

[0023] The technical solution of the present invention is to arrange an exoskeleton in the water filter chamber, the exoskeleton is provided with a water flow driving member, and the exoskeleton is sleeved on the filter assembly, wherein a driving surface is provided on the water flow driving member, and the driving surface is relative to or inclined relative to the flow direction of the water flow in the water filter chamber. At the same time, the driving surface can also be inclined relative to the circumference of the exoskeleton. When the driving surface is driven by the driving force of the water flow, the water flow driving member can generate a driving force on the exoskeleton in the circumference of the exoskeleton, thereby prompting the exoskeleton to rotate around its axial direction, that is, around the axial direction of the filter assembly, so that the kinetic energy of the water flow can be converted into the kinetic energy of the rotation of the exoskeleton through the driving surface, realizing the rotation of the exoskeleton, thereby disturbing the water flow in the water filter chamber, avoiding impurities from being deposited and adhering to the filter assembly, the exoskeleton and the side wall of the water filter chamber, reducing the possibility of clogging of the filter assembly, and thus improving the filtering effect of the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A cross-sectional schematic diagram of an embodiment of a pre-filter provided by the present utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure of the middle and outer skeleton lacking some water flow drive components;

[0027] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0028] Figure 4 for Figure 1 Schematic diagram of the structure of the coordination between the inner and outer skeletons and the water distributor;

[0029] Figure 5 for Figure 1 Schematic diagram of the structure of the water flow driving component;

[0030] Figure 6 for Figure 1 A schematic structural diagram of the water flow driving component from another perspective;

[0031] Figure 7 for Figure 1 A partial enlarged view of point B in the middle.

[0032] Description of Figure Numbers:

[0033] 100, housing;

[0034] 10. Filter bottle; 101. Water filter chamber; 102. Sewage outlet;

[0035] 20, valve head; 201, water inlet; 202, water outlet;

[0036] 30. Filter component;

[0037] 50. Exoskeleton; 502. Water flow driving member; 503. Connecting portion; 504. First wall; 505. Second wall; 506. Buckle; 507. Driving body; 508. Water baffle; 509. Driving surface;

[0038] 512, side frame; 516, avoidance groove; 517, clamping protrusion; 519, guide slope;

[0039] 60. Water distributor; 601. Guide vane.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] In the prior art, the housing 100 of the pre-filter generally includes a valve head 20 and a filter bottle 10. The valve head 20 is provided with a water inlet 201 and a water outlet 202. The valve head 20 and the filter bottle 10 enclose a water filter chamber 101. A filter assembly 30 is provided in the water filter chamber 101. A cylindrical exoskeleton 50 is formed between the filter assembly 30 and the wall of the water filter chamber 101. The exoskeleton 50 guides the flow of water to ensure the filtration efficiency of water during the filtration process. At the same time, it also ensures that the flushing effect of the water filter chamber 101, especially the filter assembly 30, is improved during the flushing process. However, during the filtration process, impurities are easily attached to the exoskeleton 50, the filter assembly 30, and the wall of the water filter chamber 101, resulting in excessive impurities in the water filter chamber 101, which easily causes clogging of the filter assembly 30, thereby affecting the filtration effect. During the flushing process of the pre-filter, the water flow does not flush the exoskeleton 50 and the filter assembly 30 sufficiently, resulting in incomplete flushing, which also reduces the filtration effect.

[0045] Before introducing the technical solution of the present invention, the water filtering process of the pre-filter is first introduced. During the use of the pre-filter, tap water first enters the water filter chamber 101 of the shell 100 from the water inlet 201, and is filtered by the filter component 30 in the water filter chamber 101. Then, under the action of pressure, the filtered tap water flows out from the water outlet 202 to the water-using equipment. After a period of use, a certain amount of impurities will be deposited in the filter component 30 and the water filter chamber 101. At this time, the water outlet 202 can be closed, and the sewage outlet 102 of the shell 100 can be opened to guide the tap water coming in from the water inlet 201 to flush the filter component 30, the exoskeleton 50 and the water filter chamber 101 to improve the filtering capacity of the filter component 30. Some pre-filters on the market usually have a flushing function, that is, they can be cleaned regularly to discharge the large particulate matter previously intercepted, thereby increasing the service life of the pre-filter.

[0046] Pre-filters are used in water systems. For example, whole-house water purification systems typically feature a pre-filter, which filters large particles from tap water. This not only ensures water safety for residents but also extends the lifespan of home appliances, prevents clogged household water pipes, and improves residents' health. The pre-filter is the first coarse filtration device in a whole-house water purification system. It typically contains a stainless steel filter, a physical filtration device that primarily intercepts large particles larger than 40 microns to protect back-end water safety.

[0047] The utility model provides a pre-filter.

[0048] Please refer to Figures 1 to 3 In one embodiment of the present invention, the pre-filter comprises:

[0049] The housing 100 is provided with a water inlet 201, a water outlet 202 and a water filter chamber 101 communicating with the water inlet 201 and the water outlet 202;

[0050] The filter assembly 30 is disposed in the water filter chamber 101; and

[0051] The exoskeleton 50 is rotatably disposed in the water filter chamber 101 and is sleeved on the outside of the filter assembly 30. The exoskeleton 50 is provided with a water flow driving component 502. The water flow driving component 502 has a driving surface 509. The driving surface 509 is set at an angle relative to the circumference of the exoskeleton 50, so that after the driving surface 509 is subjected to the impact of the water flow, it can drive the exoskeleton 50 to rotate.

[0052] The technical solution of the present invention is to set an exoskeleton 50 in the water filter chamber 101, and the exoskeleton 50 is provided with a water flow driving member 502, and the exoskeleton 50 is sleeved on the filter assembly 30, wherein a driving surface 509 is provided on the water flow driving member 502, and the driving surface 509 is opposite to or inclined to the flow direction of the water flow in the water filter chamber 101. At the same time, the driving surface 509 can also be inclined relative to the circumference of the exoskeleton 50. When the driving surface 509 is driven by the water flow, the water flow driving member 502 can be 0 generates a driving force on the exoskeleton 50 in the circumferential direction, thereby prompting the exoskeleton 50 to rotate around its axis, that is, around the axial direction of the filter component 30, so that the kinetic energy of the water flow can be converted into the kinetic energy of the rotation of the exoskeleton 50 through the driving surface 509, thereby realizing the rotation of the exoskeleton 50, thereby disturbing the water flow in the water filter chamber 101, avoiding impurities from being deposited and adhering to the side walls of the filter component 30, the exoskeleton 50 and the water filter chamber 101, reducing the possibility of clogging of the filter component 30, and thus improving the filtering effect of the filter component 30.

[0053] It should be noted that the side of the exoskeleton 50 facing the filter assembly 30 is also provided with bristles. During the rotation of the exoskeleton 50, the bristles can scrub the surface of the filter assembly 30, preventing impurities from accumulating on the surface of the filter assembly 30 and affecting the filtration effect. At the same time, the bristles also improve the cleaning efficiency of the filter assembly 30 during the cleaning process. Specifically, the extension direction and length of the bristles are adapted to the distribution of the filter screen on the filter assembly 30 and the maximum distance between the exoskeleton 50 and the filter assembly 30, avoiding interference with the filtration of the filter assembly 30 while ensuring a good flushing effect. In addition, the lower portion of the housing 100 is provided with a sewage outlet 102 connected to the water filter chamber 101. The pre-filter has a filtering mode for normal use and a cleaning mode for occasional use. In the filtering mode, only the water inlet 201 and the water outlet 202 are connected to the pre-filter, realizing the pre-filtration of water by the filter assembly 30. In the cleaning mode, water flows into the water filter chamber 101 from one of the water inlet 201 and the water outlet 202. Generally speaking, it flows into the water inlet 201 and flows out of the water filter chamber 101 from the sewage outlet 102. Regardless of the filtering mode or the cleaning mode, the water flow in the water filter chamber 101 can impact the driving surface 509. Under the guidance of the driving surface 509, the circumference of the outer skeleton 50 is pushed, thereby realizing the rotation of the outer skeleton 50 itself, so as to prevent impurities from adhering to the filter assembly 30, prevent the filter assembly 30 from being blocked, and improve the filtering effect. Among them, the directional indications such as the upper part, the lower part, and the top part referred to in this scheme are the general use status of the pre-filter, that is, Figure 2 For reference, similarly, for the axial, circumferential and radial directions referred to in this solution, Figure 1 The outer skeleton 50 in the cylindrical shape is used as a reference, wherein the upper and lower directions are parallel to the axial direction. If the specific posture changes, the directional indication will also change accordingly.

[0054] In one embodiment, please refer to Figure 2 、 Figure 3 and Figure 5The exoskeleton 50 includes a circumferentially enclosed side frame 512, and the water flow driving member 502 is arranged at the end of the side frame 512 near the water inlet 201. It can be understood that the water flows into the water filter chamber 101 from the water inlet 201, flows through the filter assembly 30 in the water filter chamber 101, and then flows out from the water outlet 202. The water flow driving member 502 is arranged near the water inlet 201. At this time, the kinetic energy of the water flow is relatively large, and the kinetic energy obtained by the water flow driving member 502 is relatively large, so it can better drive the exoskeleton 50 to rotate, ensuring the stability of the rotation of the exoskeleton 50. It should be noted that, with the axial direction of the exoskeleton 50 as a reference, the end of the side frame 512 is the axial end of the exoskeleton 50. Based on this, the side frame 512 is cylindrical, and the cross section is the cross section of the side frame 512 along the radial direction. In other embodiments, the water flow driving member 502 may also be disposed at the end of the side frame 512 away from the water inlet 201 , or at the middle of the side frame 512 to balance the force rotation at both ends of the outer frame 50 .

[0055] In one embodiment, please continue to refer to Figure 2 、 Figure 3 and Figure 5 The exoskeleton 50 includes circumferentially enclosed side frames 512, and the water flow drive member 502 is snap-fitted to the ends of the side frames 512. The water flow drive member 502 is snap-fitted to the ends of the side frames 512, enabling separate molding of the side frames 512 and the water flow drive member 502, thereby improving molding probability and convenience. The side frames 512 and the water flow drive member 502 are snap-fitted together, making the connection operation convenient. At the same time, the water flow drive member 502 can also be maintained stable at the ends of the side frames 512, thereby improving production efficiency. Of course, in other embodiments, the water flow drive member 502 can also be connected to the side frames 512 by screwing, melting, or integral molding, or the water flow drive member 502 can be snap-fitted to the axial center of the side frames 512.

[0056] Specifically, in this embodiment, please refer to Figure 2 、 Figure 3 and Figure 5The exoskeleton 50 is provided with a plurality of water flow driving members 502, and the plurality of water flow driving members 502 are spaced apart along the circumference of the exoskeleton 50. It can be understood that the plurality of water flow driving members are spaced apart at the ends of the side frames 512 around the circumference of the exoskeleton 50. In this way, the plurality of driving surfaces 509 distributed circumferentially of the exoskeleton 50 tend to be uniform, thereby balancing the driving force exerted on the exoskeleton 50 in the circumferential direction, so that the exoskeleton 50 can rotate at a uniform speed, ensuring the cleaning effect on the filter assembly 30. Without loss of generality, in this embodiment, the water flow driving member 502 is provided with a plurality of driving surfaces 509, and the plurality of driving surfaces 509 are evenly distributed on the water flow driving member 502 along the circumference of the exoskeleton 50. The plurality of water flow driving members 502 are evenly distributed circumferentially on the side frames 512, thereby ensuring that the driving surfaces 509 are evenly distributed circumferentially on the side frames 512, so as to ensure the rotational stability of the exoskeleton 50. Of course, in other embodiments, the plurality of water flow driving members 502 may also be distributed along the axial direction of the side frame 512 to balance the rotational stability of the exoskeleton 50 in the axial direction.

[0057] In one embodiment, please refer to Figure 1 and Figure 4 、 Figure 7The pre-filter also includes a water distributor 60. The water distributor 60 is arranged closer to the water inlet 201 than the water flow driving member 502. The water distributor 60 has a plurality of guide blades 601 distributed circumferentially and tilted relative to the axial direction. It can be understood that the water distributor 60 is between the water flow driving member 502 and the water inlet 201, and the water flow from the water inlet 201 must first pass through the water distributor 60 and then flow to the water flow driving member 502. The water distributor 60 has a plurality of guide blades 601 distributed circumferentially around the filter assembly 30. The guide blades 601 extend axially tilted relative to the filter assembly 30, and a relatively axially tilted flow channel is formed between two adjacent guide blades 601. There are a plurality of such flow channels in the circumferential direction of the filter assembly 30. In addition, the guide blades The inclination direction of the blade 601 is opposite to or inclined opposite to the driving surface 509. In this way, under the drainage action of the guide blade 601, the flow direction of the water flowing through the above-mentioned flow channel can impact the driving surface 509 vertically or nearly vertically, which not only ensures the size of the driving force for driving the exoskeleton 50 to rotate so that the exoskeleton 50 can rotate stably, but also, while ensuring that the driving surface 509 can drive the exoskeleton 50 to rotate in the circumferential direction of the side frame 512, the inclination degree of the driving surface 509 can also be flexibly adjusted to adapt to various water flow environments. It should be noted that, on the side of the water distributor 60 close to the water inlet 201, the water flow can fully cover the water distributor 60, so that any guide blade 601 can adjust the direction of the water flow, and the water distributor 60 is fixedly connected to the shell 100. Correspondingly, there is a gap between the water distributor 60 and the water drive member 502 to ensure that the water flow guided by the guide blade 601 can impact the corresponding drive surface 509. The water drive member 502, like the side frame 512, can rotate relative to the shell 100 in the water filter chamber 101. Specifically, the water distributor 60 causes the water flow to flow in a circumferential vortex along the axial direction of the filter assembly 30, and the drive surface 509 extends along the axial direction of the filter assembly 30, thereby generating a maximized circumferential driving force on the exoskeleton 50, thereby improving the rotation rate of the exoskeleton 50 and the effect of cleaning the filter assembly 30.

[0058] Regarding the connection between the water flow driving member 502 and the side frame 512, in this embodiment, please refer to Figure 2 、 Figure 3 and Figure 5The water flow driving member 502 includes a hooking portion 503, which is hooked to the end of the side frame 512 and is engaged with the side frame 512. It is understood that the water flow driving member 502 is hooked axially from the end of the side frame 512 toward the side frame 512, which facilitates the connection operation and is stable. After the hooking portion 503 is hooked to the side frame 512, the water flow driving member 502 and the side frame 512 are engaged. Here, the hooking portion 503 can be engaged with the side frame 512, or other parts of the water flow driving member 502 can be engaged with the side frame 512. This hooking connection provides a positioning reference for the connection between the water flow driving member 502 and the side frame 512, simplifying the connection between the water flow driving member 502 and the side frame 512. In addition, after the hooking portion 503 is engaged with the side wall, it forms a radial limit for the water flow driving member 502, preventing the water flow driving member 502 from moving radially relative to the side frame 512. Of course, in other embodiments, the water flow driving member 502 can also be connected to the side wall by plugging, or by turning a knob.

[0059] Further, in this embodiment, please refer to Figure 2 、 Figure 3 and Figure 5 The end of the side frame 512 is provided with an avoidance groove 516, and the hanging portion 503 is hung in the avoidance groove 516. The hanging portion 503 is aligned with the avoidance groove 516, and the avoidance groove 516 provides a positioning reference for the hanging portion 503 to facilitate the connection between the water flow driving member 502 and the side wall. At the same time, during the rotation of the exoskeleton 50, the avoidance groove 516 can also limit the hanging portion 503 in the circumferential direction, preventing the water flow driving member 502 from sliding in the circumferential direction, so that the driving surface 509 can promptly and stably drive the exoskeleton 50 to rotate after being impacted by the water flow. Without loss of generality, the avoidance groove 516 can be formed on the outer wall of the side frame 512 and pass through the end of the side frame 512, or the avoidance groove 516 can be formed on the outer wall and end wall of the side frame 512, forming a virtual L-shape, or the avoidance groove 516 can be formed on the inner wall of the side frame 512 but not pass through the end of the side frame 512, and the hooking portion 503 can be provided with a locking protrusion corresponding to the avoidance groove 516, and the locking protrusion can be adapted to be locked in the avoidance groove 516. Of course, in other embodiments, a protrusion can also be provided on the end of the side frame 512, and the hooking portion 503 can be provided with a sliding groove, so that when the hooking portion 503 is hooked to the end of the side frame 512, the protrusion slides into the sliding groove.

[0060] Specifically, in this embodiment, please refer to Figure 3 and Figure 5The hanging portion 503 includes a first wall body 504 and a second wall body 505 that are radially spaced relative to each other along the side frame 512. The first wall body 504 and the second wall body 505 are connected to one end close to the water inlet 201. The end of the side frame 512 is adapted to be inserted between the first wall body 504 and the second wall body 505, or the first wall body 504 is adapted to be clamped in the avoidance groove 516, or the end of the side frame 512 is adapted to be inserted between the first wall body 504 and the second wall body 505, and the first wall body 504 is also adapted to be clamped in the avoidance groove 516. It can be understood that the gap between the first wall body 504 and the second wall body 505 is circumferentially continuous so that the end of the side frame 512 is inserted between the first wall body 504 and the second wall body 505, wherein the first wall body 504 can be adapted to be inserted into the avoidance groove 516, and the second wall body 505 abuts against the inner side of the side frame 512, so that the side frame 512 is clamped between the first wall body 504 and the second wall body 505, or the first wall body 504 can be adapted to be snap-fitted into the avoidance groove 516, and the second wall body 505 does not abut against the inner side of the side frame 512. Furthermore, in the direction near the water inlet 201, the first wall 504 and the second wall 505 are connected. This connection is part of the first wall 504 and is adapted to be mounted in the avoidance groove 516 in the axial direction of the side frame 512. Accordingly, the avoidance groove 516 includes both a portion recessed on the outer periphery of the side frame 512 and a portion recessed at the end of the side frame 512, and the two portions are connected, that is, the avoidance groove 516 is L-shaped, and the first wall 504 is also L-shaped. In this way, the hanging portion 503 is stably connected to the end of the side frame 512, thereby ensuring the stability and convenience of the connection between the water flow driving member 502 and the side wall 512.

[0061] In one embodiment, please refer to Figure 3 and Figure 5 , surfaces on different sides of the first wall 504 are correspondingly flush with the outer peripheral wall and / or end wall of the side frame 512. It should be noted that the outer peripheral wall of the side frame 512 is a cylindrical circular side wall, and the end wall of the side frame 512 is an end face parallel to the cross section of the side frame 512. In this way, the first wall body 504 is perpendicular to the radial direction of the side frame 512 and parallel to the outer wall of the circumference of the side frame 512 and is arranged flush with the outer peripheral wall of the side frame 512, so that the outer periphery of the exoskeleton 50 at the connection between the water flow driving member 502 and the side frame 512 is flush, avoiding the interference of the rotation process of the exoskeleton 50 with the shell 100. Similarly, the outer wall of the first wall body 504 parallel to the cross section of the side frame 512 is arranged flush with the end wall of the side frame 512, so that the wall surface of the exoskeleton 50 facing the water distributor 60 or the water inlet 201 is flush, avoiding the interference of the rotation process of the exoskeleton 50 with the shell 100 or the water distributor 60, thereby ensuring the rotation stability of the exoskeleton 50 and the compactness of the pre-filter. Of course, in other embodiments, the outer wall of the first wall 504 may also be convex or concave relative to the outer peripheral wall or end wall of the side frame 512 .

[0062] Regarding the clamping structure of the water flow driving member 502 and the side frame 512, in this embodiment, please refer to Figure 2 and Figure 3 The groove wall of the avoidance groove 516 is provided with a latching protrusion 517, and the first wall body 504 is provided with a latching opening 506, and the latching protrusion 517 is latched in the latching opening 506. It is understood that the latching protrusion 517 can be provided on the groove bottom wall of the avoidance groove 516 or on the groove side wall of the avoidance groove 516, and the latching opening 506 is opened radially or circumferentially from the wall body. In this way, when the first wall body 504 is adapted to be installed in the avoidance groove 516, the latching protrusion 517 is also latched in the corresponding latching opening 506, so that the hanging portion 503 is latched to the side frame 512, realizing the latching connection between the water flow driving member 502 and the side frame 512, and ensuring the connection stability of the water flow driving member 502 and the side frame 512. Without loss of generality, a corner of the latching protrusion 517 is provided as a guide slope 519, which is provided near the water inlet 201. That is, during the hooking process of the hooking portion 503, the guide slope 519 can guide the first wall 504 to deform. After the latching protrusion 517 corresponds to the buckle opening 506, the first wall 504 elastically recovers and fits into the avoidance groove 516, thereby improving the ease of hooking the hooking portion 503 to the side wall. Alternatively, the corner of the latching protrusion 517 can remain square, and the guide slope 519 can be provided on the first wall 504, and on the side of the buckle opening 506 away from the water inlet 201, to guide the deformation of the first wall 504 and ensure smooth hooking of the latching protrusion 517 and the buckle opening 506. Of course, in other embodiments, a groove may be formed on the first wall 504, and the latch 517 may be locked in the groove, or the latch 517 may be set on the first wall 504, and the groove or buckle 506 may be set on the groove wall of the avoidance groove 516, or the latching structure between the water flow driving component 502 and the side frame 512 may be set at a position of the water flow driving component 502 other than the hanging part 503.

[0063] In one embodiment, please refer to Figures 2 to 5The water flow driving member 502 further includes a driving body 507 connected to the attachment portion 503. The driving body 507 is mounted on the inner side of the side frame 512. The attachment portion 503 engages the outer side of the side frame 512, and a driving surface 509 is formed on the driving body 507. Without loss of generality, the gap between the exoskeleton 50 and the housing 100 is relatively small, while the gap between the exoskeleton 50 and the filter assembly 30 is relatively large to ensure efficient filtration of water through the filter assembly 30. Thus, the driving body 507 with the driving surface 509 is positioned on the inner side of the side frame 512 to prevent the tension between the sidewall of the water filter chamber 101 and the water flow from affecting the impact force of the water flow on the driving surface 509, thereby ensuring the rotational stability and reliability of the exoskeleton 50. Furthermore, since the drive surface 509 is disposed on the drive body 507, the drive body 507 inevitably maintains good flatness around the circumference of the side frame 512. Positioning the drive body 507 inside the side frame 512 ensures the flatness of the outer side of the exoskeleton 50, prevents the housing 100 from interfering with the rotation of the exoskeleton 50, and ensures that the drive surface 509 receives sufficient water flow impact. Simultaneously, the attachment portion 503 is positioned outside the side frame 512, and the drive body 507 is positioned inside the side frame 512. This balances the forces acting on the water flow drive element 502 in the inward and outward directions of the side frame 512, thereby ensuring a stable connection between the water flow drive element 502 and the side frame 512. Of course, in other embodiments, if the gap between the side frame 512 and the wall of the water filter chamber 101 is large, the drive body 507 may also be positioned outside the side frame 512.

[0064] For details, please refer to Figures 2 to 5 The end of the side frame 512 is provided with an escape groove 516, and the groove wall of the escape groove 516 is provided with a locking protrusion 517. The locking protrusion 517 is provided on the outer side of the side frame 512. The hanging portion 503 is provided with a buckle 506. The hanging portion 503 is hung in the escape groove 516, and the locking protrusion 517 is locked in the buckle 506. It can be understood that the locking protrusion 517 is provided on the outer bottom wall of the escape groove 516 on the side frame 512. Under the premise that the escape groove 516 limits the hanging portion 503 in the circumferential and radial directions, the locking protrusion 517 is integrated into the escape groove 516 to ensure the stability of the hanging portion 503 in the axial direction within the escape groove 516, thereby facilitating the installation of the water flow driving component 502 on the end of the side wall 512.

[0065] In one embodiment, please refer to Figures 2 to 5, the driving surface 509 is parallel to the axial direction of the outer frame 50. It is understood that the driving surface 509 is distributed circumferentially on the side frame 512, and can refer to the above-mentioned arrangement of the water distributor 60, with the guide vane 601 guiding the water flow to guide the water flow to impact the driving surface 509. Alternatively, a drainage structure can be provided on the channel wall between the water inlet 201 and the water flow driving member 502 to divert the water flow in a vortex shape along the axial direction of the filter assembly 30, thereby directly impacting the driving surface 509 parallel to the axial direction of the outer frame 50, thereby allowing the water flow driving member 502 to obtain a greater water flow impact force, thereby increasing the rotation speed or rotation efficiency of the outer frame 50, preventing impurities from adhering to the filter assembly 30, ensuring the cleanliness of the filter assembly 30, and improving the filtration efficiency of the filter assembly 30 for the water flow. Of course, in other embodiments, the driving surface 509 can also be inclined relative to the axial direction of the outer frame 50, or radially inclined relative to the side frame 512.

[0066] In one embodiment, please refer to Figures 3 to 5 The exoskeleton 50 includes a circumferentially enclosed side frame 512. The water flow drive member 502 includes a drive body 507 configured to conform to the inner circumferential wall of the side frame 512. The drive body 507 extends in an arc shape along the circumference of the side frame 512 and is provided with a plurality of water baffles 508 spaced apart at intervals. A drive surface 509 is formed on the water baffles 508. Without loss of generality, the water baffles 508 protrude from the drive body 507. The drive surface 509 is formed on the side wall of the water baffle 508 along the circumference of the side frame 512, so that the drive surface 509 has a certain radial dimension, ensuring that the drive surface 509 is stably impacted by the water flow. At the same time, the drive body 507 extends in an arc shape along the inner circumference of the side frame 512. The plurality of water baffles 508 are spaced apart in the extension direction of the drive body 507 to evenly distribute the driving force along the circumference of the side frame 512, thereby ensuring the stability of the rotation of the exoskeleton 500. Furthermore, the drive body 507 is conformally arranged on the inner circumferential wall of the side frame 512, and the two fit closely together. When the drive body 507 is subjected to force, the inner wall of the side frame 512 can provide sufficient stable support for the drive body 507, thereby effectively pulling the side frame 512 to rotate, avoiding shaking between the water flow driving member 502 and the side frame 512, which would cause energy waste, ensuring the rotation efficiency of the exoskeleton 50, and improving the cleaning effect of the filter assembly 30. Of course, in other embodiments, the drive body 507 can also be provided with a recessed drive groove, with the side groove wall of the drive groove configured as the drive surface 509.

[0067] Specifically, in this embodiment, please refer to Figures 3 to 5The circumferential width of the water baffle 508 on the side frame 512 is between 0.8 mm and 1.2 mm, the radial length of the water baffle 508 on the side frame 512 is between 1.6 mm and 2.4 mm, and the axial length of the water baffle 508 on the side frame 512 is between 5 mm and 7 mm. It can be understood that the minimum circumferential width of the water baffle 508 on the side frame 512 is 0.8 mm and the maximum circumferential width is 1.2 mm, i.e., the circumferential width of the water baffle 508 is greater than or equal to 0.8 mm and less than or equal to 1.2 mm. Similarly, the minimum radial width of the water baffle 508 on the side frame 512 is 1.6 mm and the maximum radial width is 2.4 mm, i.e., the radial length is greater than or equal to 1.6 mm and less than or equal to 2.4 mm. Similarly, the minimum axial width of the water baffle 508 on the side frame 512 is 5 mm and the maximum axial length is 7 mm, i.e., the axial length is greater than or equal to 5 mm and less than or equal to 7 mm. In this way, the axial distribution rate of the impact force of the water flow on the side frame 512 can be increased, so as to balance the rotational stability of the exoskeleton 50 in the axial direction of the exoskeleton 50 and avoid eccentric rotation of the exoskeleton 50. At the same time, the number of water flow driving components 502 distributed in the circumferential direction of the side frame 512 can also be increased to achieve uniformity of force in the circumferential direction, thereby ensuring the rotational stability and speed uniformity of the exoskeleton 50. In addition, the radial protrusion size of the water baffle 508 along the side frame 512 is limited. While ensuring that the force on the driving surface 509 is stable and reliable, it also avoids interference between the exoskeleton 50 and the filter component 30 during rotation. Specifically, in this embodiment, the circumferential width of the water baffle 508 on the side frame 512 can be 0.8 mm, 1 mm, or 1.2 mm; the radial length of the water baffle 508 on the side frame 512 can be 1.6 mm, 1.8 mm, 2.0 mm, 2.2 mm, or 2.4 mm; and the axial length of the water baffle 508 on the side frame 512 can be 5 mm, 5.5 mm, 6 mm, 6.5 mm, or 7 mm.

[0068] The present invention also proposes a water use system, which includes the aforementioned pre-filter. The specific structure of the pre-filter refers to the above-mentioned embodiment. Since the present water use system adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0069] Among them, the water use system at least includes relevant components from the pre-filter to the water use end. For example, the water use system may include household appliances such as water heaters, dishwashers, and water dispensers, and may also include accessories such as water pipes for domestic water use throughout the house.

[0070] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pre-filter, characterized in that: include: The shell is provided with a water inlet, a water outlet and a water filtering cavity communicating with the water inlet and the water outlet; A filter assembly, the filter assembly being arranged in the water filter cavity; as well as The exoskeleton is rotatably disposed in the water filter chamber and is sleeved on the outside of the filter assembly. The exoskeleton is provided with a water flow driving component. The water flow driving component has a driving surface. The driving surface is arranged at an angle relative to the circumference of the exoskeleton, so that the driving surface can drive the exoskeleton to rotate after being impacted by the water flow.

2. The prefilter according to claim 1, wherein The outer frame includes side frames enclosed along the circumferential direction, and the water flow driving component is arranged at the end of the side frame close to the water inlet.

3. The prefilter according to claim 1, wherein: The outer frame includes side frames surrounded along the circumferential direction, and the water flow driving member is clamped at the end of the side frame.

4. The prefilter according to claim 3, characterized in that The water flow driving member includes a hanging portion, which is hung on the end of the side frame and is clamped with the side frame.

5. The pre-filter according to claim 4, characterized in that An avoidance groove is provided at the end of the side frame, and the hanging portion is hung on the avoidance groove.

6. The prefilter according to claim 5, characterized in that The hanging portion includes a first wall and a second wall spaced apart from each other along the radial direction of the side frame, wherein the first wall and the second wall are connected at one end close to the water inlet; The end portion of the side frame is adapted to be inserted between the first wall body and the second wall body; and / or the first wall body is adapted to be clamped in the avoidance groove.

7. The prefilter according to claim 6, characterized in that The groove wall of the avoidance groove is provided with a locking protrusion, the first wall body is provided with a buckle opening, and the locking protrusion is locked in the buckle opening; And / or, surfaces on different sides of the first wall body are correspondingly arranged flush with the outer peripheral wall and / or end wall of the side frame.

8. The pre-filter according to claim 4, characterized in that The water flow driving member further includes a driving body connected to the hanging portion, the driving body is hung on the inner side of the side frame, the hanging portion is engaged with the outer side of the side frame, and the driving surface is formed on the driving body.

9. The prefilter according to claim 8, characterized in that An avoidance groove is provided at the end of the side frame, a groove wall of the avoidance groove is provided with a clamping protrusion, the clamping protrusion is arranged on the outer side of the side frame, the hanging part is provided with a buckle opening, the hanging part is hung on the avoidance groove, and the clamping protrusion is clamped in the buckle opening.

10. The pre-filter according to claim 1, wherein: The driving surface is parallel to the axial direction of the outer skeleton.

11. The prefilter according to claim 10, wherein: The exoskeleton includes side frames enclosed along the circumferential direction, and the water flow driving component includes a driving body arranged in a conformal manner with the inner circumferential wall of the side frame. The driving body extends in an arc shape along the circumference of the side frame and is provided with a plurality of water baffles distributed at intervals, and the driving surface is formed on the water baffles.

12. The pre-filter according to claim 11, characterized in that The circumferential width of the water baffle on the side frame is between 0.8 mm and 1.2 mm, the radial length of the water baffle on the side frame is between 1.6 mm and 2.4 mm, and the axial length of the water baffle on the side frame is between 5 mm and 7 mm.

13. The prefilter according to any one of claims 1 to 12, characterized in that The pre-filter further comprises a water distributor, which is arranged closer to the water inlet than the water flow driving member, and has a plurality of guide blades distributed circumferentially and tilted relative to the axial direction. And / or, the exoskeleton is provided with a plurality of the water flow driving members, and the plurality of the water flow driving members are distributed at intervals along the circumference of the exoskeleton.

14. A water system, characterized in that: The method comprises the pre-filter according to any one of claims 1 to 13.

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