Composite filter element and equipment with water purification function

Abstract

The utility model discloses a composite filter element and equipment with a water purification function, the composite filter element comprises a filter bottle cap, a filter element cap and a sealing element, the middle part of the filter bottle cap is provided with a mounting port, and a water channel is arranged in the filter bottle cap; the filter element cover is connected to the filter element, the filter element cover is detachably mounted on the mounting port, the filter element cover is provided with a side surface and a water passing port communicated with the water channel, and the water passing port is one of a front filter element water inlet, a front filter element water outlet and a rear filter element water outlet; the sealing element is arranged at the outer edge of the water passing opening and is partially positioned between the filter element cover and the filter bottle cover. According to the technical scheme, the blocking table is arranged on the upper side of the communicating position of the water passing opening of the filter element cover and the water channel of the filter bottle cover, so that the sealing ring arranged on the outer edge of the water passing opening is prevented from being flushed away by water flow with large pressure, and the situation that a pure water channel filtered by the composite filter element is polluted due to the failure of the sealing ring is prevented; and the sealing ring is prevented from being flushed up to interfere with normal operation of a waterway.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a composite filter element and equipment with water purification function. Background Art

[0002] In order to improve the quality of drinking water, common water purifiers generally use multi-stage filtration to reduce impurities in raw water.

[0003] At present, there is a composite filter element that integrates the pre-filter element, the post-filter element and the reverse osmosis filter element into one filter bottle to reduce the space occupied by the composite filter element. Considering that the service life of the pre-filter element and the post-filter element is shorter than that of the reverse osmosis filter element, the pre-filter element and the post-filter element are detachably arranged from the reverse osmosis filter element, so that the pre-filter element and the post-filter element can be replaced separately, reducing the cost of replacing the filter element.

[0004] In the existing composite filter element structure, since the front filter element and the rear filter element are detachable, a sealing ring is generally provided in the composite filter element to prevent water leakage when the composite filter element is inlet or outlet. When water is inletting or outleting the composite filter element, a large pressure is generally applied, which may flush the sealing ring and make it ineffective, resulting in water leakage in the composite filter element. Utility Model Content

[0005] The main purpose of the utility model is to provide a composite filter element, which is intended to prevent a sealing ring from being flushed away by high-pressure inlet water or high-pressure outlet water in the composite filter element.

[0006] In order to achieve the above-mentioned purpose, the composite filter element proposed by the utility model comprises:

[0007] A filter bottle cover, wherein a mounting opening is provided in the middle of the filter bottle cover, and a water channel is provided in the filter bottle cover;

[0008] A filter element cover, wherein the lower side of the filter element cover is connected to the filter element, the filter element cover is detachably mounted on the mounting port, the filter element cover has a side surface, a water outlet communicating with the water channel is formed on the side surface, and the water outlet is at least one of the pre-filter element water inlet, the pre-filter element water outlet, and the post-filter element water outlet;

[0009] A sealing member, wherein the sealing member is arranged at the outer edge of the water outlet and is located between the filter element cover and the filter bottle cover;

[0010] Wherein, the filter element cover is provided with a baffle protruding from the side surface, and the baffle is located on the upper side of the water outlet.

[0011] In one embodiment, a guide slope is provided on a side of the baffle close to the water outlet.

[0012] In one embodiment, the guide slope extends from the baffle toward the water outlet, and the guide slope is inclined from the baffle toward the side surface.

[0013] In one embodiment, the stop platform further has a stop surface connected to the side surface, the stop surface is connected to the guide slope, the stop surface is closer to the sealing member than the guide slope, and the stop surface is perpendicular to the side surface.

[0014] In one embodiment, the stop platform further has a step surface connected to the guide inclined surface, and the step surface is located on a side of the guide inclined surface away from the stop surface.

[0015] In one embodiment, a receiving groove is provided on the side surface, and the sealing member is partially located in the receiving groove.

[0016] In one embodiment, the sealing member is partially exposed from the receiving groove.

[0017] In one embodiment, a height of the stop relative to the side surface is greater than a height of the sealing member relative to the side surface.

[0018] In one embodiment, the height of the stop relative to the side surface is H, and H satisfies 0.5 mm ≤ H ≤ 3 mm.

[0019] In one embodiment, the filter bottle cover is provided with an avoidance groove for avoiding the baffle, the avoidance groove includes an inclined groove wall, a straight groove wall and a connecting wall, the inclined groove wall and the straight groove wall are connected by the connecting wall, the inclined groove wall and the straight groove wall correspond to the guide inclined surface and the step surface respectively, the connecting wall is perpendicular to the straight groove wall, and the connecting wall corresponds to the connection between the guide inclined surface and the step surface.

[0020] In one embodiment, the number of the water channels is set to be multiple, and the multiple water channels respectively form a first water inlet, a first water outlet, and a second water outlet on the filter bottle cover, and the number of the water outlets is set to be multiple, and the multiple water outlets include a pre-filter cartridge water inlet, a pre-filter cartridge water outlet, and a post-filter cartridge water outlet. The pre-filter cartridge water inlet is connected to the first water inlet, the pre-filter cartridge water outlet is connected to the first water outlet, and the post-filter cartridge water outlet is connected to the second water outlet.

[0021] The utility model also proposes a device with a water purification function, the device with a water purification function comprises a composite filter element, the composite filter element comprises a filter bottle cover, a filter element cover and a sealing member, a mounting port is provided in the middle of the filter bottle cover, a water channel is provided in the filter bottle cover; the lower side of the filter element cover is connected to the filter element, the filter element cover is detachably mounted on the mounting port, the filter element cover has a side surface, a water outlet connected to the water channel is provided on the side surface, the water outlet is at least one of the pre-filter element water inlet, the pre-filter element water outlet and the post-filter element water outlet; the sealing member is arranged on the outer edge of the water outlet, and the sealing member is located between the filter element cover and the filter bottle cover; the filter element cover is provided with a baffle protruding from the side surface, and the baffle is located on the upper side of the water outlet.

[0022] The technical solution of the utility model adopts a baffle arranged on the upper side of the connection point between the water outlet of the filter element cover and the water channel of the filter bottle cover, thereby preventing the sealing ring arranged on the outer edge of the water outlet from being washed away by the water flow with greater pressure, thereby preventing the sealing ring from failing and causing the pure water channel after filtering by the composite filter element to be polluted, and also avoiding the sealing ring from being washed away and interfering with the normal operation of the water channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the composite filter element of the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the composite filter element in a cross-sectional perspective;

[0026] Figure 3 for Figure 2 Schematic diagram of the structure after removing the pre-filter element, post-filter element and reverse osmosis filter element;

[0027] Figure 4 This is an exploded view of the composite filter element;

[0028] Figure 5 An exploded view of the filter cover assembly;

[0029] Figure 6 It is a schematic diagram of the structure of the filter element cover and the filter element handle;

[0030] Figure 7 for Figure 6Schematic diagram of the structure after removing the seal;

[0031] Figure 8 It is a structural schematic diagram of the filter element cover from another viewing angle;

[0032] Fig. 9 It is a schematic diagram of the structure of the filter bottle cover and the filter element cover after they are matched at a certain viewing angle;

[0033] Fig.10 for Fig. 9 The enlarged view of point A in the middle;

[0034] Fig.11 It is a structural schematic diagram of the filter bottle cover;

[0035] Fig.12 It is a schematic diagram of the structure of the front and rear filter components in a cross-sectional perspective;

[0036] Fig.13 It is an exploded view of the front and rear filter components;

[0037] Fig.14 An exploded view of the reverse osmosis filtration assembly.

[0038] Description of Figure Numbers:

[0039]

[0040]

[0041] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. 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 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 utility model.

[0045] The utility model provides a composite filter element 10, which is used to be installed in a device with a water purification function to filter raw water passing through it so that the water quality meets the needs of users before being used by users. The device with a water purification function can be any one of a water purifier, a water purifier, a soft and purifier integrated machine, a purifier and heat integrated machine, and an ice maker.

[0046] See also Figures 1 to 4 The composite filter element 10 proposed in the utility model includes a filter bottle 100, a front and rear filter assembly 200, a reverse osmosis filter assembly 300 and a filter cover assembly 400; a receiving chamber 110 is formed inside the filter bottle 100, the front and rear filter assembly 200 and the reverse osmosis filter assembly 300 are arranged in the receiving chamber 110, and the front and rear filter assembly 200 is located inside the reverse osmosis filter assembly 300. It should be noted that the front and rear filter assembly 200 and the reverse osmosis filter assembly 300 are respectively arranged in two independent chambers in the filter bottle 100, and the front and rear filter assembly 200 includes a front filter assembly and a rear filter assembly, and the front filter assembly and the rear filter assembly are integrated into the front and rear filter assembly 200. The filter bottle 100 is arranged in a barrel shape, and its upper end is open, and the filter cover assembly 400 covers the open. The filter cover assembly 400 is provided with at least one water inlet end and at least one water outlet end, and both the at least one water inlet end and the at least one water outlet end are communicated with the accommodating cavity 110 .

[0047] The composite filter element 10 is characterized in that the pre-filter element 210 , the post-filter element 220 and the reverse osmosis filter element 310 are integrated in the same filter bottle 100 to realize an integrated composite filter element 10 .

[0048] Specifically, the filter bottle 100 is used to be installed in a device with a water purification function, and the reverse osmosis filter component 300 and the front and rear filter components 200 are all arranged in the accommodating cavity 110 of the filter bottle 100; the front and rear filter components 200 will filter out impurities contained in the water and / or improve the taste of the water, and the reverse osmosis filter component 300 will filter out various salt ions and other solutes in the water, thereby reducing the concentration of various salt ions and other solutes in the water and reducing the TDS value of the raw water.

[0049] Please continue reading Fig.14 The reverse osmosis filtration component 300 includes a reverse osmosis filter element 310, a central tube 340, a reverse osmosis top cover 320 and a reverse osmosis bottom cover 330. The reverse osmosis filter element 310 is sleeved on the outer wall of the central tube 340, and the reverse osmosis filter element 310 is arranged between the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330. The upper end and the lower end of the reverse osmosis filter element 310 are fixed by the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330. Furthermore, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are also provided with a groove body for the end of the reverse osmosis filter element 310 to be embedded; thus, the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 jointly fix the reverse osmosis filter element 310 in the filter bottle 100.

[0050] like Figure 4 and Figure 5 As shown, the filter cover assembly 400 includes a filter bottle cover 410, a filter bottle handle 420, a filter element cover 430, a filter element handle 440 and a decorative cover 460. The filter bottle handle 420 is rotatably connected to the filter bottle cover 410, and the decorative cover 460 covers the filter bottle cover 410.

[0051] It should be noted that the decorative cover 460 is used to cover the filter element cover 430 and the filter bottle cover 410 to prevent external impurities from contaminating the composite filter element 10, and to cover the outer wall surfaces of multiple water flow channels of the filter bottle cover 410 to ensure the consistency of the appearance of the composite filter element 10.

[0052] Among them, the filter bottle cover 410 is provided with a plurality of water passages arranged side by side, wherein the plurality of water passages include a first water inlet 411, a water outlet, a water inlet filter element of the reverse osmosis filter element 310, a wastewater outlet of the reverse osmosis filter element 310, and a water outlet 431c of the post filter element. Considering that the filter bottle cover 410 is connected to the filter bottle 100, and the filter element cover 430 is connected to the front and rear filter components 200, correspondingly, a pre-filter element water inlet 431a, a pre-filter element water outlet 431b, and a post-filter element water outlet 431c are provided on the filter element cover 430, which are respectively connected to the pre-filter element water inlet 431a, the pre-filter element water outlet 431b, and the post-filter element water outlet 431c.

[0053] In addition, the composite filter element 10 has another major advantage, namely, it is easy to replace the composite filter element 10 and the front and rear filter components 200, wherein the filter bottle handle 420 is rotatably matched with the filter bottle cover 410. When the composite filter element 10 as a whole needs to be replaced, the filter bottle handle 420 that was originally flush with the filter bottle cover 410 is flipped over, and the entire composite filter element 10 is then lifted out of the equipment with water purification function.

[0054] The service life of the front and rear filter components 200 is generally shorter than that of the reverse osmosis filter component 300. When the service life of the current rear filter component 200 expires, directly replacing the front and rear filter components 200 is more in line with the user's need to reduce the cost of filter element replacement. Therefore, the filter element handle 440 and the filter element cover 430 are rotated to cooperate, and the front and rear filter components 200 are detachably installed in the reverse osmosis filter component 300, and then the front and rear filter components 200 can be lifted out of the reverse osmosis filter component 300 as a whole through the filter element handle 440, which is convenient for the replacement of the front and rear filter components 200.

[0055] In addition, the structure of the composite filter element 10 further increases the size of the pre-filter element 210, the post-filter element 220 and the reverse osmosis filter element 310, thereby increasing the water inlet flux of the composite filter element 10, and the flux can reach more than 1000G. In view of this, in the process of large-flux water inlet, it is often necessary to increase the pressure through a booster pump, and the filter cover assembly 400 also includes a plurality of adapters 450, and the plurality of adapters 450 are respectively connected to the plurality of waterway openings on the filter bottle cover 410, and the plurality of adapters 450 are configured as metal parts to adapt to a larger water inlet pressure or water outlet pressure.

[0056] See also Fig.12 and Fig.13 The front and rear filter assembly 200 includes a filter cover 430, a front filter 210, a rear filter 220, a water outlet pipe 230, a welding sheet 240, an upper end cover 250, a lower end cover 260 and an inner cylinder 270. The filter cover 430 is sealed with the upper end cover 250, the front filter 210 is arranged between the upper end cover 250 and the inner cylinder 270, and the rear filter 220 is arranged inside the inner cylinder 270. The front filter 210 and the rear filter 220 can be arranged up and down, left and right, or inside and outside, and their specific positions are not limited. The pre-filter element 210 and the post-filter element 220 are separated by the inner cylinder 270, so that when the pre-filter element 200 and the post-filter element 200 are installed in a device with a water purification function for use, the inner cylinder 270 and other structures in the composite filter element 10 are enclosed to form a first filter chamber 710 and a second filter chamber 720 that are independent of each other. The pre-filter element 210 and the post-filter element 220 are respectively arranged in the first filter chamber 710 and the second filter chamber 720, so that the water flow path through the pre-filter element 210 and the water flow path through the post-filter element 220 do not affect each other.

[0057] Since the pre-filter element 210 is used to filter out most of the impurities in the raw water, the overall volume of the pre-filter element 210 needs to be set larger, and the water passing through the post-filter element 220 has been filtered twice by the pre-filter element 210 and the reverse osmosis filter element 310, and the solute content in the water is already very small, so the overall volume of the post-filter element 220 can be set relatively small. Therefore, the pre-filter element 210 and the post-filter element 220 are arranged in the up and down direction, which can ensure that the pre-filter element 210 and the post-filter element 220 have a good filtering effect, while the pre-filter element 210 and the post-filter element 220 further reduce the space occupied in the axial direction. Specifically, the pre-filter element 210 is located above the post-filter element 220, that is, the pre-filter element 210 is arranged close to the filter element cover 430, and the post-filter element 220 is arranged on the side of the pre-filter element 210 away from the filter element cover 430.

[0058] The pre-filter element 210 and the post-filter element 220 are both hollow cylindrical, wherein one end of the pre-filter element 210 is connected to the upper end cap 250, and the other end is connected to the upper surface of the inner cylinder 270. The pre-filter element 210 is connected to the upper end cap 250 and the inner cylinder 270 by gluing to prevent the water from flowing out directly through the connection between the pre-filter element 210, the upper end cap 250 and the inner cylinder 270 without filtering through the pre-filter element 210. Of course, the pre-filter element 210, the upper end cap 250 and the inner cylinder 270 can also be connected in other ways, which is not specifically limited. The inner cylinder 270 can be cylindrical, and the post-filter element 220 is arranged in the cylindrical inner cylinder 270, and the pre-filter element 210 and the post-filter element 220 are separated by the inner cylinder 270. The bottom of the cylindrical inner cylinder 270 is open, and the open is used for the post-filter element 220 to be placed in the inner cylinder 270, and the open is sealed by the lower end cover 260. The post-filter element 220 disposed inside the cylindrical inner cylinder 270 is respectively glued to the top inside the inner cylinder 270 and the lower end cover 260 to prevent the water from flowing out directly through the connection between the post-filter element 220 and the top inside the inner cylinder 270 and the lower end cover 260 without being filtered by the post-filter element 220. Of course, the post-filter element 220 and the top inside the inner cylinder 270 and the lower end cover 260 can also be connected in other ways, and there is no specific limitation on this.

[0059] The length of the pre-filter element 210 is greater than the length of the post-filter element 220 to ensure the filtering effect of the pre-filter element 210 and the post-filter element 220. Furthermore, the length of the pre-filter element 210 is 2-3 times the length of the post-filter element 220.

[0060] It should be noted that in order to ensure the compactness and miniaturization of the structure of the front and rear filter components 200, since the front filter element 210 is arranged in a hollow cylindrical shape and the rear filter element 220 is arranged below the front filter element 210, an outlet pipe 230 can be arranged inside the front filter element 210, and one end of the outlet pipe 230 is connected to the water outlet side of the rear filter element 220, and the other end is connected to the outlet channel on the filter element cover 430, so that the water inlet channel and the outlet channel of the front and rear filter components 200 can be integrated on the filter element cover 430, thereby ensuring the compactness of the structure of the front and rear filter components 200 and realizing the miniaturization of the front and rear filter components 200 and the composite filter element 10 installed with the front and rear filter components 200. In order to ensure the independence of the water outlet flow path of the post-filter element 220 and the water outlet flow path of the pre-filter element 210, the sealing of the two ends of the water outlet pipe 230 can also be ensured by setting a corresponding sealing structure, for example, by two welding plates 240, which are respectively connected to the filter element cover 430 and the inner cylinder 270 to form a sealing member 500 groove of the sealing member 500, and the sealing member 500 is installed in the sealing member 500 groove to limit the position of the sealing member 500. At the same time, the two ends of the water outlet pipe 230 are sealed by the sealing effect of the sealing member 500.

[0061] The composite filter element 10 proposed in the present invention has a flow path as follows:

[0062] The raw water flows into the first water gap 610 through the pre-filter inlet 431a, and after being filtered by the pre-filter 210, flows out from the outlet channel between the inner wall of the pre-filter 210 and the outer wall of the outlet pipe 230, and flows out from the pre-filter outlet 431b. The water flowing out from the pre-filter outlet 431b flows into the second water gap 620 from the inlet of the reverse osmosis filter 310 after being pressurized by the booster pump, and enters from the side of the reverse osmosis filter 310 (here, it means that the reverse osmosis filter 310 adopts a 3D water-saving membrane. If the reverse osmosis filter 310 adopts an ordinary filter membrane, the water enters from the bottom of the reverse osmosis filter 310). After being filtered by the reverse osmosis filter 310, the water flow is divided into two paths: a pure water path and a waste water path. The pure water flows to the post-filter 220 for re-filtration, and the waste water flows out of the composite filter 10 from the waste water outlet 415. Among them, the pure water first flows through the first water hole 341 on the central tube 340 to the third water gap 630, and then flows through the second water hole 271 on the partition to the rear filter element 220 for filtration. The pure water filtered by the rear filter element 220 flows from the inside of the rear filter element 220 to the outlet pipe 230, and finally flows out from the water outlet 431c of the rear filter element for use by users.

[0063] On the basis of the above-mentioned composite filter element 10, considering that the front and rear filter components 200 are detachably installed in the reverse osmosis filter component 300, and further, there is an installation gap between the filter element cover 430 and the filter bottle cover 410. This installation gap causes the sealing ring between the filter element cover 430 and the filter bottle cover 410 to be washed away by the water flow around the sealing ring, or the sealing ring is washed up and stuck in the installation gap between the filter bottle cover 410 and the filter element cover 430, thereby interfering with the water flow.

[0064] In view of this, the utility model improves the structure of the filter cover assembly 400 to form a filter bottle cover 410, such as Figures 6 to 11 As shown, first, a water channel 416 is opened in the filter bottle cover 410, and the filter element cover 430 is detachably installed in the installation port 418 of the filter bottle cover 410. The filter element cover 430 has a side surface 432, and a water outlet 431 connected to the water channel 416 is opened on the side surface 432. The water outlet 431 is at least one of the pre-filter element water inlet 431a, the pre-filter element water outlet 431b and the post-filter element water outlet 431c. Therefore, the filter element connected to the filter element cover 430 can be the pre-filter element 210 or the post-filter element 220, and the pre-filter element 210 and the post-filter element 220 can also be connected together. The number of water channels 416 can be only one or more, and the water outlet 431 can be at least one of the pre-filter water inlet 431a, the pre-filter water outlet 431b and the post-filter water outlet 431c, or it can be any two of the three, or it can be all three. There is no specific restriction on the number and type of water channels 416 and water outlets 431, and it is only necessary that the number of water channels 416 is relative to the number of water outlets 431.

[0065] Specifically, the sealing member 500 is arranged at the outer edge of the water outlet 431, so as to prevent the water flowing from the water outlet 431 from flowing to other parts of the composite filter element 10, thereby contaminating the pure water. The sealing member 500 in this embodiment is arranged in a ring shape, which is arranged around the outer edge of the water outlet 431. The sealing member 500 is located between the filter element cover 430 and the filter bottle cover 410, so that the connection between the water channel 416 and the water outlet 431 can be exactly sealed. Of course, the sealing member 500 can be partially arranged between the filter element cover 430 and the filter bottle cover 410, or the sealing member 500 can be completely arranged between the filter element cover 430 and the filter bottle cover 410, which is not specifically limited here.

[0066] The filter element cover 430 is provided with a stopper 433 protruding from the side surface 432 , and the stopper 433 is located at the upper side of the water outlet 431 .

[0067] It should be noted that a stopper 433 protruding from the side surface 432 is provided on the side surface 432, and the stopper 433 can limit the sealing ring to prevent the sealing ring from being washed away. It should be noted that the stopper 433 can be a straight platform, an inclined platform, or a platform of any other shape, which is not specifically limited here.

[0068] The technical solution of the utility model adopts a baffle 433 provided on the upper side of the connection point between the water outlet 431 of the filter element cover 430 and the water channel 416 of the filter bottle cover 410, thereby preventing the sealing ring provided on the outer edge of the water outlet 431 from being washed away by the water flow with a relatively large pressure, thereby preventing the sealing ring from failing and causing the pure water channel after filtering by the composite filter element 10 to be polluted, and also avoiding the sealing ring from being washed away and interfering with the normal operation of the water channel.

[0069] For further information, see Figures 6 to 10 A guide slope 433a is provided on one side of the baffle 433 close to the water outlet 431. Considering that when the composite filter element 10 takes in water, the filter element cover 430 and the filter bottle cover 410 are separately provided, the filter element cover 430 will shake, thereby generating a greater pressure on the filter bottle cover 410. In this way, the provision of this guide slope 433a can better disperse the structural pressure and prevent the filter bottle cover 410 from being subjected to excessive pressure from the filter element cover 430, thereby causing structural deformation.

[0070] Specifically, see Figure 6 and Figure 8 In one embodiment, the guide slope 433a extends from the baffle 433 toward the water outlet 431, and the guide slope 433a is inclined from the baffle 433 toward the side surface 432, so that the guide slope 433a can prevent the sealing ring from being washed away, thereby preventing the sealing ring from failing and causing the pure water waterway after filtering by the composite filter element 10 to be contaminated.

[0071] In one embodiment, see Figure 8 and Fig.10 The stopper 433 also has a stopper surface 433b connected to the side surface 432, the stopper surface 433b is connected to the guide slope 433a, the stopper surface 433b is closer to the sealing member 500 than the guide slope 433a, and the stopper surface 433b is perpendicular to the side surface 432. The stopper surface 433b can further effectively prevent the sealing ring from being washed away, and prevent the sealing ring from failing, thereby causing the pure water channel after the composite filter element 10 is filtered to be polluted.

[0072] In one embodiment, see Figure 8 and Fig.10The stopper 433 also has a step surface 433c connected to the guide inclined surface 433a, and the step surface 433c is located on a side of the guide inclined surface 433a away from the stop surface 433b.

[0073] It should be noted that the formation of the step surface 433 c allows the stopper 433 to have a certain thickness so that the stopper 433 can withstand greater pressure. If the thickness of the stopper 433 is too thin, it may be destroyed by greater pressure, causing the structure of the stopper 433 to deform.

[0074] In one embodiment, see Figure 6 and Figure 7 A receiving groove 432a is formed on the side surface 432, and a portion of the sealing member 500 is located in the receiving groove 432a.

[0075] Specifically, by partially arranging the sealing member 500 in the receiving groove 432a, the sealing member 500 can be further limited. It should be further explained that the portion of the sealing member 500 exceeding half of its volume is arranged in the receiving groove 432a, and only the portion less than half of its volume is located between the filter bottle cover 410 and the filter element cover 430. In this way, the limiting effect of the receiving groove 432a on the sealing member 500 can be enhanced, and the sealing ring can be further effectively prevented from being washed away, so as to prevent the sealing ring from failing, thereby preventing the pure water path after the composite filter element 10 is filtered from being polluted.

[0076] In one embodiment, see Figure 7 The filter bottle cover 410 is provided with an avoidance groove 417 for avoiding the baffle 433, and the avoidance groove 417 includes an inclined groove wall 417a, a straight groove wall 417b and a connecting wall 417c, the inclined groove wall 417a and the straight groove wall 417b are connected by the connecting wall 417c, the inclined groove wall 417a and the straight groove wall 417b correspond to the guide inclined surface 433a and the step surface 433c respectively, the connecting wall 417c is perpendicular to the straight groove wall 417b, and the connecting wall 417c corresponds to the connection between the guide inclined surface 433a and the step surface 433c.

[0077] It should be noted that, in order to make the structure of the filter bottle cover 410 and the filter element cover 430 fit as closely as possible and reduce the space occupied by the composite filter element 10, a bypass groove 417 for bypassing the stopper 433 is provided on the filter bottle cover 410, and the bypass groove 417 mainly includes three wall surfaces, wherein the inclined groove wall 417a matches the guide inclined surface 433a, and the straight groove wall 417b matches the above-mentioned step surface 433c. Considering that if the bypass groove 417 is only provided with the straight groove wall 417b and the inclined groove wall 417a matching the stopper 433, the filter element cover 430 will cause a large extrusion force on the filter bottle cover 410 when subjected to a large water flow pressure, thereby easily causing the filter element cover 430 or the filter bottle cover 410 structure to be deformed or washed away, a connecting wall 417c perpendicular to the straight groove wall 417b is also provided to reduce the extrusion force between the stopper 433 and the bypass groove 417.

[0078] In one embodiment, see Figure 8 , a height of the stopper 433 relative to the side surface 432 is greater than a height of the sealing member 500 relative to the side surface 432 .

[0079] It should be noted that the baffle 433 has a height relative to the side surface 432, specifically, the height of the step surface 433c relative to the side surface 432, and this height is greater than the height of the sealing ring relative to the side surface 432, so that the baffle 433 has a good blocking effect on the sealing ring, effectively preventing the sealing ring from being washed away, and preventing the sealing ring from failing, thereby preventing the pure water waterway after filtration of the composite filter element 10 from being contaminated.

[0080] In one embodiment, see Figure 8 The height of the stopper 433 relative to the side surface 432 is H, and H satisfies 0.5mm≤H≤3mm.

[0081] Specifically, the height of the stopper 433 relative to the side surface 432 is H, and this H must not be less than 0.5 mm, otherwise it cannot play a blocking role on the sealing ring. H must not be greater than 3 mm, otherwise it will cause the structural strength of the stopper 433 to decrease and be easily destroyed by greater pressure.

[0082] In one embodiment, see Figure 7 and Fig.11, further illustrate the water channel 416 and the water outlet 431, the number of the water channel 416 is set to be multiple, the multiple water channel channels 416 respectively form a first water inlet 411, a first water outlet 412 and a second water outlet 414 on the filter bottle cover 410, the number of the water outlet 431 is set to be multiple, the multiple water outlets 431 include a pre-filter element water inlet 431a, a pre-filter element water outlet 431b and a post-filter element water outlet 431c, the pre-filter element water inlet 431a is connected to the first water inlet 411, the pre-filter element water outlet 431b is connected to the first water outlet 412, and the post-filter element water outlet 431c is connected to the second water outlet 414.

[0083] The utility model also proposes a device with a water purification function, which includes a composite filter element 10. The specific structure of the composite filter element 10 refers to the above embodiment. Since the device with a water purification function adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0084] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A composite filter element, characterized in that: include: A filter bottle cover, wherein a mounting opening is provided in the middle of the filter bottle cover, and a water channel is provided in the filter bottle cover; A filter element cover, the lower side of which is connected to the filter element, the filter element cover is detachably mounted on the mounting opening, the filter element cover has a side surface, and a water outlet communicating with the water channel is formed on the side surface; A sealing member, wherein the sealing member is arranged at the outer edge of the water outlet and is located between the filter element cover and the filter bottle cover; Wherein, the filter element cover is provided with a baffle protruding from the side surface, and the baffle is located on the upper side of the water outlet.

2. The composite filter element according to claim 1, characterized in that: A guide slope is arranged on one side of the baffle close to the water outlet.

3. The composite filter element according to claim 2, characterized in that: The guide slope extends from the baffle toward the water outlet, and the guide slope is inclined from the baffle toward the side surface.

4. The composite filter element according to claim 2, characterized in that: The stop platform also has a stop surface connected to the side surface, the stop surface is connected to the guide inclined surface, the stop surface is closer to the sealing member than the guide inclined surface, and the stop surface is perpendicular to the side surface.

5. The composite filter element according to claim 4, characterized in that: The stop platform also has a step surface connected to the guide inclined surface, and the step surface is located on a side of the guide inclined surface away from the stop surface.

6. The composite filter element according to claim 1, characterized in that: The side surface is provided with a receiving groove, and the sealing member is located in the receiving groove.

7. The composite filter element according to claim 6, characterized in that: The sealing member is partially exposed from the accommodating groove.

8. The composite filter element according to claim 7, characterized in that: A height of the stop relative to the side surface is greater than a height of the sealing member relative to the side surface.

9. The composite filter element according to claim 8, characterized in that: The height of the stop relative to the side surface is H, and H satisfies 0.5 mm ≤ H ≤ 3 mm.

10. The composite filter element according to claim 5, characterized in that: The filter bottle cover is provided with an avoidance groove for avoiding the baffle, and the avoidance groove includes an inclined groove wall, a straight groove wall and a connecting wall. The inclined groove wall and the straight groove wall are connected by the connecting wall. The inclined groove wall and the straight groove wall correspond to the guide inclined surface and the step surface respectively. The connecting wall is perpendicular to the straight groove wall, and the connecting wall corresponds to the connection between the guide inclined surface and the step surface.

11. The composite filter element according to claim 2, characterized in that: The number of the water channels is set to be multiple, and the multiple water channels respectively form a first water inlet, a first water outlet, and a second water outlet on the filter bottle cover. The number of the water outlets is set to be multiple, and the multiple water outlets include a pre-filter cartridge water inlet, a pre-filter cartridge water outlet, and a post-filter cartridge water outlet. The pre-filter cartridge water inlet is connected to the first water inlet, the pre-filter cartridge water outlet is connected to the first water outlet, and the post-filter cartridge water outlet is connected to the second water outlet.

12. A device with water purification function, characterized in that: Comprising the composite filter element as described in any one of claims 1 to 11.

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