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, and the composite filter element comprises a filter bottle, a filter bottle cover, a filter element cover and a filter element handle, the filter bottle cap is mounted on the filter bottle, a mounting groove is formed in the middle of the filter bottle cap, a mounting opening is formed in the bottom of the mounting groove, a limiting table is arranged on the periphery of the mounting opening, and an insertion hole is formed in the limiting table; the filter element cover is detachably mounted at the mounting opening; a bolt is arranged on one side, facing the filter element cover, of the filter element handle and penetrates through the insertion hole; the filter bottle cover is further provided with a limiting structure, the limiting structure is provided with a reinforcing table connected with the limiting structure, the limiting structure forms a limiting groove, the filter element handle is arranged in the limiting groove in a sliding mode, and the limiting groove limits the filter element handle in the axial direction of the filter bottle. According to the technical scheme, the reinforcing table is arranged on the limiting structure and used for reinforcing the limiting structure, the limiting structure is prevented from being damaged by washing, and the filter element cover is connected in a pressing mode through the plug pin, so that the overall structure of the composite filter element is good in reliability.

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] There are high levels of soluble solids in tap water, so more and more users are choosing water purification equipment to filter the soluble solids in tap water to improve the water quality. Among them, the filter element assembly that mainly plays a filtering role usually includes at least a pre-filter element and a reverse osmosis filter element. The pre-filter element and the reverse osmosis filter element are integrated into a filtering unit. Since the life of the pre-filter element is usually lower than that of the reverse osmosis filter element, the pre-filter element needs to be replaced frequently to ensure the filtering effect of the pre-filter element. In order to facilitate the replacement of the pre-filter element, the existing products design the pre-filter element as a detachable filter element. Therefore, when disassembling the pre-filter element, the pre-filter element can be directly removed from the filter bottle.

[0003] When the composite filter element is in working condition, the water pressure inside the composite filter element is relatively high. Due to the detachable setting of the pre-filter element, the post-filter element and the reverse osmosis filter element, a relatively large impact force is generated inside, causing the structure of the composite filter element to be deformed or even damaged. Utility Model Content

[0004] The main purpose of the utility model is to provide a composite filter element, aiming to make the structure of the composite filter element have better reliability.

[0005] In order to achieve the above-mentioned purpose, the composite filter element proposed by the utility model comprises:

[0006] Filter bottle;

[0007] A filter element cover, the filter element cover is installed on the filter bottle, a mounting groove is provided in the middle of the filter element cover, a mounting opening is provided at the bottom of the mounting groove, a limiting platform is provided on the periphery of the mounting opening, and a plug hole is provided on the limiting platform;

[0008] A filter element cover, the filter element cover is detachably mounted at the mounting opening;

[0009] A filter element handle, wherein a latch is provided on one side of the filter element handle facing the filter element cover, and the latch extends into the insertion hole to limit the position of the filter element cover;

[0010] Among them, the filter element cover is also provided with a limiting structure, and a reinforcing platform connected to the limiting structure is provided on one side of the limiting structure, and the limiting structure forms a limiting groove, and the filter element handle can be slidably arranged in the limiting groove, and the limiting groove limits the filter element handle on the axial direction of the filter bottle.

[0011] In one embodiment, a pressing groove is provided on the filter element cover, and the latch extends into the insertion hole and is at least partially located in the pressing groove.

[0012] In one embodiment, the number of the latch pins is set to at least one, and the number of the pressing grooves is consistent with the number of the latch pins.

[0013] In one embodiment, the insertion hole is formed by penetrating from the outer side of the limiting platform to the inner side of the limiting platform.

[0014] In one embodiment, a reinforcing member is disposed in the limiting structure, the reinforcing member and the limiting structure are injection-molded as one body, and the rigidity of the reinforcing member is greater than the rigidity of the limiting structure.

[0015] A reinforcement member, wherein the reinforcement member and the limiting structure are injection molded as one body, and the rigidity of the reinforcement member is greater than the rigidity of the limiting structure.

[0016] In one embodiment, the reinforcement is arranged in a C shape.

[0017] In one embodiment, the limiting structure is made of plastic, and the reinforcement is made of metal.

[0018] In one embodiment, the limiting structure has a first connection portion extending in the up-down direction, and a second connection portion extending in the horizontal direction from one end of the first connection portion, and the limiting groove is formed between the first connection portion and the second connection portion.

[0019] In one embodiment, the reinforcement member includes a first supporting portion and a second supporting portion connected to each other, the first supporting portion is arranged at the first connecting portion, and the second supporting portion is arranged at the second connecting portion.

[0020] In one embodiment, the reinforcing platform is arranged as an inclined platform.

[0021] In one embodiment, the reinforcing platform extends from the middle of the limiting structure toward a side away from the limiting structure.

[0022] The utility model also proposes a device with a water purification function, wherein the device with a water purification function comprises a composite filter element, wherein the composite filter element comprises a filter bottle, a filter bottle cover, a filter element cover and a filter element handle; the filter element cover is installed in the filter bottle, a mounting groove is provided in the middle part of the filter element cover, a mounting opening is provided at the bottom of the mounting groove, a limiting platform is provided on the outer periphery of the mounting opening, and a plug hole is provided on the limiting platform; the filter element cover is detachably installed at the mounting opening, a latch is provided on the side of the filter element handle facing the filter element cover, the latch extends into the plug hole and is used to limit the filter element cover; wherein the filter element cover is also provided with a limiting structure, a reinforcing platform connected to the limiting structure is provided on one side of the limiting structure, the limiting structure forms a limiting groove, the filter element handle is slidably provided in the limiting groove, and the limiting groove limits the filter element handle in the axial direction of the filter bottle.

[0023] The technical solution of the utility model adopts a reinforcing platform provided on the limiting structure to strengthen the limiting structure, and presses the filter element cover with a latch to prevent the limiting structure from being washed away, thereby making the structure of the composite filter element have better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1 It is a schematic diagram of the structure of the filter bottle cover, the adapter and the filter bottle handle;

[0026] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the filter cover assembly after removing the decorative cover;

[0028] Figure 4 An exploded view of the filter cover assembly;

[0029] Figure 5 A schematic diagram of the structure of the filter cover assembly after removing the filter element cover from a cross-sectional perspective;

[0030] Figure 6 This is a schematic diagram of the structure of the composite filter element of the utility model;

[0031] Figure 7 It is a schematic diagram of the structure of the composite filter element in a cross-sectional perspective;

[0032] Figure 8 for Figure 5 Schematic diagram of the structure after removing the pre-filter element, post-filter element and reverse osmosis filter element;

[0033] Fig. 9 This is an exploded view of the composite filter element;

[0034] Fig.10 An exploded view of the filter cover assembly;

[0035] Fig.11 It is a schematic diagram of the structure of the filter element cover and the filter element handle;

[0036] Fig.12 It is a structural schematic diagram of the filter bottle cover;

[0037] Fig.13 It is a schematic diagram of the structure of the front and rear filter components in a cross-sectional perspective;

[0038] Fig.14 It is an exploded view of the front and rear filter components;

[0039] Fig.15 An exploded view of the reverse osmosis filtration assembly.

[0040] Description of Figure Numbers:

[0041]

[0042]

[0043] 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

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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 the composite filter element so that the water quality meets the needs of the user and is then provided for use by the user.

[0048] See also Figures 4 to 6 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 .

[0049] 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 .

[0050] Specifically, the filter bottle 100 is used to be installed in a device with a water purification function, and the reverse osmosis filter assembly 300 and the front and rear filter assembly 200 are both arranged in the accommodating chamber 110 of the filter bottle 100; the front and rear filter assembly 200 will filter out impurities contained in the water and / or improve the taste of the water, and the reverse osmosis filter assembly 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. The device with a water purification function can be any one of a water purifier, a water purifier, a soft and clean machine, a clean and hot machine, and an ice maker.

[0051] Please continue reading Fig.12 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.

[0052] like Figure 7 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.

[0053] 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.

[0054] 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 first water outlet 412, a second water inlet 413, a waste water outlet 415 and a second water outlet 414. 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, the filter element cover 430 is provided with a front filter element water inlet 431, a front filter element water outlet 432 and a rear filter element water outlet 433, which are connected to the first water inlet 411, the first water outlet 412 and the second water outlet 414 respectively.

[0055] 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.

[0056] Specifically, the filter element cover 430 is installed in cooperation with the filter bottle cover 410. A mounting groove 416 is opened in the middle of the filter bottle cover 410, and a mounting port 416a is opened at the bottom of the mounting groove 416. The mounting port 416a is arranged in a circular shape. The filter element cover 430 can be detachably installed in the mounting port 416a, and the filter element cover 430 is limited in the mounting groove 416.

[0057] 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.

[0058] Please note that Figure 8 The filter element handle 440 includes an integrally formed hand grip 441 and a slide bar 442. When the front and rear filter components 200 need to be replaced, the hand grip 441 is held with fingers or palms to lift out the front and rear filter components 200 for replacement. In order to make the composite filter element 10 further meet the requirements of miniaturization design, the filter element handle 440 is folded when not in use. Therefore, a slide groove 434 is provided on the filter element cover 430, so that the slide bar 442 is slidably connected with the slide groove 434. When the front and rear filter components 200 need to be replaced, the hand grip 441 is first held to slide the filter element handle 440 out, and then the filter element handle 440 is rotated to lift it out.

[0059] 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.

[0060] See also Fig.10and Fig.11 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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, through two welding plates 240, which are respectively connected to the filter element cover 430 and the inner cylinder 270 to form a sealing groove of the seal, and a seal is installed in the sealing groove to limit the position of the seal. At the same time, the two ends of the water outlet pipe 230 are sealed by the sealing effect of the seal.

[0065] The composite filter element 10 proposed in the present invention has a flow path as follows:

[0066] The raw water flows into the first water gap 610 through the pre-filter inlet 431, 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 432. The water flowing out from the pre-filter outlet 432 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 inner tube 270 to the post filter element 220 for filtration. The pure water filtered by the post filter element 220 flows from the inside of the post filter element 220 to the water outlet pipe 230, and finally flows out from the water outlet 433 of the post filter element for use by users.

[0067] Based on the above composite filter element 10, please refer to Fig.10The utility model also provides slide grooves 434 on the opposite sides of the filter element cover 430 relative to the filter element cover 430, so that the filter element handle 440 can be rotatably connected to the slide groove 434, wherein the filter element handle 440 can be connected to it through a transfer shaft 442c, or it can be connected to it through other structures, which is not specifically limited here.

[0068] Two limiting grooves 417 are provided on the filter bottle cover 410, and the filter element handle 440 can slide along the extension direction of the limiting grooves 417. The two limiting grooves 417 are used to limit the filter element handle 440 to prevent the filter element handle 440 from being subjected to a large pressure from the filter element cover 430 on the lower side and thus being deformed, broken or even damaged. Therefore, the limiting grooves 417 are provided to press the filter element handle 440 in the axial direction of the installation port 416a, giving it a reverse force to keep the force on the filter element handle 440 relatively balanced.

[0069] Specifically, the filter element cover 430 includes a main body 435 and lugs 436 located on both sides of the main body 435. When the composite filter element 10 is in operation, the filter element handle 440 is used to press on the upper side of the lug 436. The mounting groove 416 is formed with a clamping groove 416b that cooperates with the lug 436. The clamping groove 416b is used to limit the rotation of the lug 436 along its circumferential direction. In this way, the lug 436 is limited by the filter element handle 440, and the filter element handle 440 is limited by the limiting structure 418. The limiting structure 418 is reinforced by the reinforcing platform 419, so that the limiting structure 418 can withstand a large pressure and prevent the limiting structure 418 from being destroyed and deformed by the large pressure brought by the filter element handle 440.

[0070] For further information, see Figure 3 and Fig.10 A limiting platform 419a is also provided on the outer periphery of the mounting opening 416a, and a plug hole 419b is provided on the limiting platform 419a. When the filter element handle 440 slides from the second position to the first position, the latch 441a extends into the plug hole 419b, and the latch 441a is at least partially located above the filter element cover 430, so that the filter element cover 430 is limited in the up and down directions by the latch 441a, so as to prevent the flow channel opening where the filter element cover 430 and the filter bottle cover 410 are docked from being misaligned, and to ensure that the docking point between the filter bottle cover 410 and the filter element cover 430 will not cause water leakage.

[0071] It should be noted that the number of the pins 441a can be one or more, the number of the holes 419b and the pressing grooves 437 can be set to only one, or can be set to multiple corresponding to the number of the pins 441a. Preferably, the number of the pins 441a, the holes 419b and the pressing grooves 437 are kept consistent to improve the limiting effect of the pin 441a.

[0072] For further information, please refer to Fig.10The filter element cover 430 is provided with a pressing groove 437, and the latch 441a extends into the insertion hole 419b and is at least partially located in the pressing groove 437. With such a configuration, the filter element cover 430 can be limited in the up and down directions.

[0073] For further information, please refer to Fig.10 The installation opening 416a is circularly arranged, and the limiting platform 419a has a relative inner side and outer side. The inner side contour of the limiting platform 419a is similar to the contour of the installation opening 416a, and the outer side contour of the limiting platform 419a is similar to the inner side contour of the filter element handle 440.

[0074] See also Fig.10 In one embodiment, the jack 419b is formed by penetrating from the outer side of the limiting platform 419a to the inner side of the limiting platform 419a. Furthermore, the height of the jack 419b is not greater than half of the height of the limiting platform 419a. Specifically, since the latch 441a extends into the jack 419b to limit the filter element cover 430, when the filter element cover 430 is subjected to an upward force, the force will be transmitted to the limiting platform 419a. In order to ensure the structural strength of the limiting platform 419a, the height of the jack 419b is set to be no greater than half of the height of the limiting platform 419a, that is, the height of the jack 419b is equal to or less than half of the height of the limiting platform 419a. Of course, in order to prevent the latch 441a from being easily broken due to insufficient strength, the thickness of the latch 441a is set to be no less than one-third of the height of the limiting platform 419a. The thickness of the latch pin 441a is consistent with the height of the insertion hole 419b, that is, the height of the insertion hole 419b is not less than one third of the height of the limiting platform 419a.

[0075] In one embodiment, see Figure 8 A sliding space 900 is formed between the filter element cover 430 and the filter bottle cover 410 for the sliding rod 442 to slide. The sliding space 900 is connected to the notch 417a, and the sliding rod 442 is partially slidably disposed in the limiting groove 417. It should be noted that the sliding rod 442 is partially limited in the limiting groove 417, and the other part of the sliding rod 442 is disposed in the sliding space 900, and the sliding space 900 is connected to the notch 417a, so that the consistency of the structure of the sliding rod 442 can be maintained.

[0076] In one embodiment, see Figure 7 and 8 , the length of the sliding rod 442 is consistent with the length of the lug portion 436 .

[0077] Based on the above-mentioned embodiments, the portion of the filter element handle 440 that applies pressure is the slide bar 442, so the length of the slide bar 442 is consistent with the length of the lug 436, and further, the portion of the lug 436 that applies pressure to the filter element handle 440 and the portion of the filter element handle 440 that applies pressure to the limiting structure 418 correspond to each other, so that the force-bearing parts of the filter element handle 440 and the limiting structure 418 are relatively consistent.

[0078] Also, see Figure 1 The utility model also provides a reinforcing platform 419 on one side of the limiting structure 418, wherein the reinforcing platform 419 is connected to the limiting structure 418, and the reinforcing platform 419 enables the limiting structure 418 to reinforce the limiting structure 418, so that the limiting structure 418 can withstand greater pressure without being destroyed.

[0079] In one embodiment, please continue to refer to Figure 1 The reinforcing platform 419 is arranged as an inclined platform, which extends from the middle of the limiting structure 418 toward a side away from the limiting structure 418. Compared with the square platform, the inclined platform can further reinforce the limiting structure 418 to prevent the limiting structure 418 from being destroyed by a large pressure.

[0080] In one embodiment, see Figure 5 The reinforcing member 800 and the limiting structure 418 are integrally molded by injection molding, and the rigidity of the reinforcing member 800 is greater than the rigidity of the limiting structure 418. The reinforcing member 800 and the limiting structure 418 can be both made of plastic or metal, but in this embodiment, the limiting structure 418 is made of plastic and the reinforcing member 800 is made of metal.

[0081] It should be noted that stiffness refers to the ability of a material or structure to resist elastic deformation when subjected to force. If the stiffness of a material or structure is large, it means that the material or structure is not easily deformed when subjected to force. On the contrary, if the stiffness of a material or structure is small, it means that the material or structure is easily deformed when subjected to force.

[0082] In one embodiment, please continue to refer to Figure 5 The reinforcement member 800 may be arranged in an L-shape. In this embodiment, the reinforcement member 800 is arranged in a C-shape. The C-shaped reinforcement member 800 has a better fixing effect.

[0083] In one embodiment, see Figure 5 The limiting structure 418 has a first connecting portion 4181 extending in the up-down direction, and a second connecting portion 4182 extending from one end of the first connecting portion 4181 in the horizontal direction, and the limiting groove 417 is formed between the first connecting portion 4181 and the second connecting portion 4182.

[0084] See also Figure 5 In one embodiment, the limiting structure 418 has a first connection portion 4181 extending in the up-down direction, and a second connection portion 4182 extending in the horizontal direction from one end of the first connection portion 4181, and the track groove 417a is formed between the first connection portion 4181 and the second connection portion 4182. Specifically, the limiting structure 418 is generally designed in an inverted "L" shape.

[0085] Please continue reading Figure 5 , further, the reinforcing member 800 includes a first supporting portion 810 and a second supporting portion 820 connected to each other, wherein the first supporting portion 810 is arranged at the first connecting portion 4181, and the second supporting portion 820 is arranged at the second connecting portion 4182. Specifically, the first supporting portion 810 and the second supporting portion 820 are connected together, and are arranged corresponding to the first connecting portion 4181 and the second connecting portion 4182, respectively, that is, the shape of the first supporting portion 810 and the second supporting portion 820 after being connected together is also roughly in an inverted "L" shape. The structural strength of the first connecting portion 4181 and the second connecting portion 4182 is strengthened by the first supporting portion 810 and the second supporting portion 820, and the structural strength of the connection between the first connecting portion 4181 and the second connecting portion 4182 is further strengthened to prevent the first connecting portion 4181 and the second connecting portion 4182 from being deformed when the filter element cover 430 is subjected to a large upward force, thereby causing the composite filter element 10 to leak.

[0086] In one embodiment, see Figure 8 The sliding rod 442 includes a first stage 442a and a second stage 442b connected to each other. The first stage 442a is at least partially slidably disposed in the sliding space 900, and the second stage 442b is slidably disposed in the limiting groove 417.

[0087] It should be noted that in order to make the sliding rod 442 more compatible, a portion is set in the limiting groove 417, and the other portion is set in the sliding space 900, so as to form a first stage 442a and a second stage 442b, and the height of the first stage 442a is greater than the height of the second stage 442b, so that the second stage 442b matches the shape of the limiting groove 417.

[0088] For further information, please refer to Figure 8 , the width of the first stage 442a is consistent with the width of the second stage 442b.

[0089] Specifically, the widths of the first stage 442a and the second stage 442b are the same. It should be noted that the widths of the first stage 442a and the second stage 442b are the widths in the radial direction of the filter element cover 430. Considering that the second stage 442b will be subjected to pressure and transmit the pressure to the limiting structure 418, if the width of the second stage 442b is relative to the first stage 442a, it cannot be too small, otherwise the force on the limiting structure 418 will be too concentrated and easy to deform, and the second stage 442b itself will also be easy to deform. If the pressure on the second stage 442b is small, it will also be easy to deform. Therefore, the widths of the first stage 442a and the second stage 442b are set to be basically the same, so that the overall force on the filter element handle 440 is more uniform.

[0090] In one embodiment, see Figure 7 The sliding rod 442 is provided with a transfer shaft 442 c toward the filter element cover 430 , and the transfer shaft 442 c is rotationally matched with the slide groove 434 , and the transfer shaft 442 c is slidingly matched with the slide groove 434 .

[0091] It should be noted that the slide bar 442 is provided with a transfer shaft 442c toward the filter cover 430, and the transfer shaft 442c is rotatably matched with the slide groove 434, so that the filter handle 440 can be flipped relative to the filter cover 430, and because the rotating shaft is set to be cylindrical, the rotating shaft can also slide on the slide groove 434. The filter handle 440 is formed by an integral molding process in the mold, which reduces the processing cost of the filter handle 440.

[0092] The technical solution of the utility model adopts a reinforcing platform 419 provided on the limiting structure to reinforce the limiting structure 418 to prevent the limiting structure 418 from being washed away, and the filter element cover is crimped by the pin 441a to improve the sealing of the composite filter element 10, thereby solving the technical problem that the composite filter element 10 is prone to water leakage.

[0093] 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 refers to the above embodiment. Since the device with a water purification function adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0094] 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: Filter bottle; A filter element cover, the filter element cover is installed on the filter bottle, a mounting groove is provided in the middle of the filter element cover, a mounting opening is provided at the bottom of the mounting groove, a limiting platform is provided on the periphery of the mounting opening, and a plug hole is provided on the limiting platform; A filter element cover, the filter element cover is detachably mounted at the mounting opening; A filter element handle, wherein a latch is provided on one side of the filter element handle facing the filter element cover, and the latch extends into the insertion hole to limit the position of the filter element cover; Among them, the filter element cover is also provided with a limiting structure, and a reinforcing platform connected to the limiting structure is provided on one side of the limiting structure, and the limiting structure forms a limiting groove, and the filter element handle can be slidably arranged in the limiting groove, and the limiting groove limits the filter element handle on the axial direction of the filter bottle.

2. The composite filter element according to claim 1, characterized in that: The filter element cover is provided with a pressing groove, and the latch extends into the insertion hole and is at least partially located in the pressing groove.

3. The composite filter element according to claim 2, characterized in that: The number of the latch pins is set to be at least one, and the number of the pressing grooves is consistent with the number of the latch pins.

4. The composite filter element according to claim 3, characterized in that: The insertion hole is formed by penetrating from the outer side of the limiting platform to the inner side of the limiting platform.

5. The composite filter element according to claim 1, characterized in that: A reinforcing member is arranged in the limiting structure. The reinforcing member and the limiting structure are injection-molded as one body. The rigidity of the reinforcing member is greater than the rigidity of the limiting structure.

6. The composite filter element according to claim 5, characterized in that: The reinforcement is arranged in a C shape.

7. The composite filter element according to claim 5, characterized in that: The material of the limiting structure is plastic, and the material of the reinforcement is metal.

8. The composite filter element according to claim 5, characterized in that: The limiting structure comprises a first connection portion extending in the up-down direction, and a second connection portion extending in the horizontal direction from one end of the first connection portion, and the limiting groove is formed between the first connection portion and the second connection portion.

9. The composite filter element according to claim 8, characterized in that: The reinforcement member includes a first supporting portion and a second supporting portion connected to each other, wherein the first supporting portion is disposed at the first connecting portion, and the second supporting portion is disposed at the second connecting portion.

10. The composite filter element according to claim 1, characterized in that: The reinforcing platform is arranged as an inclined platform.

11. The composite filter element according to claim 2, characterized in that: The reinforcing platform extends from the middle of the limiting structure toward a side away from the limiting structure.

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.

Images