Composite filter element of water purification equipment

Abstract

The invention discloses a composite filter element of water purification equipment, which comprises a filter bottle provided with a filter bottle cap; the central pipe is arranged in the filter bottle; the first filtering assembly is detachably arranged in the central pipe; wherein the filter bottle cover is provided with a filter bottle handle, the first filter assembly is connected with a filter element cover, the filter element cover is provided with a filter element handle, and the filter bottle cover is provided with a clamping groove allowing the filter element cover to be embedded therein. According to the technical scheme, the front filter element and the rear filter element can be independently replaced compared with a reverse osmosis filter element.

Description

Technical Field

[0001] The invention relates to the field of water purification equipment, and in particular to a composite filter element of water purification equipment. Background Art

[0002] Water purification equipment refers to equipment used to produce clean water, which is often used in daily drinking, chemical industry, medical treatment, breeding, planting, food, beverage and other fields.

[0003] In existing water purification equipment, filter elements are often used to filter water, and in order to reduce the overall volume of the water purification equipment, filter elements with different functions are integrated into one, and the composite filter element used is generally a 3-stage or 4-stage filter element; the composite filter element generally includes a pre-filter element for filtering large particles such as flocs, a reverse osmosis filter element for reducing the salt ion concentration in the water and filtering microorganisms, and a post-filter element for improving the taste of purified water.

[0004] The service life of a reverse osmosis filter element is often longer than that of a pre-filter element or a post-filter element, and the service lives of the pre-filter element and the post-filter element are often similar. Therefore, in order to avoid wasting the service life of the reverse osmosis filter element, it is necessary to make the pre-filter element and / or the post-filter element replaceable independently of the reverse osmosis filter element. Summary of the invention

[0005] The main purpose of the present invention is to provide a composite filter element for a water purification device, so that the pre-filter element and / or the post-filter element can be replaced independently compared to the reverse osmosis filter element.

[0006] To achieve the above-mentioned purpose, the composite filter element of the water purification equipment proposed by the present invention comprises:

[0007] A filter bottle, wherein the filter bottle is provided with a filter bottle cover;

[0008] A central tube, the central tube being disposed in the filter bottle;

[0009] a first filter assembly, the first filter assembly being detachably disposed in the central tube;

[0010] Among them, the filter bottle cover is provided with a filter bottle handle, the first filter assembly is connected with a filter element cover, the filter element cover is provided with a filter element handle, and the filter bottle cover is provided with a clamping groove for the filter element cover to be embedded.

[0011] Optionally / in one embodiment, both ends of the filter element handle are provided with adapter posts, and the filter element cover is provided with adapter grooves on two opposite sides, and the adapter posts are rotatably connected in the adapter grooves.

[0012] Optionally / in one embodiment, the adapter groove is a waist-shaped groove, the extension direction of the adapter groove intersects with the height direction of the filter bottle, and the adapter column is slidable in the adapter groove.

[0013] Optionally / in one embodiment, connecting posts are provided on both ends of the filter bottle handle, and a connecting groove for the connecting post to extend into is provided on the filter bottle cover, and the connecting post is rotatably connected in the connecting groove.

[0014] Optionally / in one embodiment, a lug is provided on the side wall of the portion of the connecting column extending into the connecting groove, and a lug groove for inserting the lug is provided on the filter bottle cover.

[0015] Optionally / in one embodiment, a limiting portion is protrudingly formed on the filter bottle cover, and a recessed portion cooperating with the limiting portion is formed on the end of the filter element handle, and the length of the limiting portion is smaller than the length of the adapter groove.

[0016] Optionally / in one embodiment, two limiting portions are symmetrically arranged on the filter bottle cover, and recessed portions are arranged on both ends of the filter element handle.

[0017] Optionally / in one embodiment, an arc-shaped groove is formed in a depression on the top of the filter element cover, and an arc-shaped notch is formed on a side of the arc-shaped groove close to the filter element handle.

[0018] Optionally / in one embodiment, the filter element handle and the filter bottle handle are located on the same side of the filter bottle.

[0019] Optionally / in one embodiment, the filter bottle handle is strip-shaped and the filter bottle handle is U-shaped.

[0020] Optionally / in one embodiment, a reinforcing rib is provided on a side of the filter bottle handle away from the filter bottle.

[0021] Optionally / in one embodiment, a plurality of water inlets are provided on the filter element cover, a plurality of water channels are provided on the filter bottle cover, and the water inlets are connected to the water channels in a one-to-one correspondence.

[0022] Optionally / in one embodiment, the longitudinal cross-sectional area of ​​the water channel is smaller than the longitudinal cross-sectional area of ​​the water outlet.

[0023] Optionally / in one embodiment, a flexible abutment is provided on the water inlet, and the flexible abutment is in abutment with the filter bottle cover.

[0024] The technical solution of the present invention is to dispose a central tube in the filter bottle, and to dispose the first filter component detachably in the central tube, thereby making the first filter component detachable compared to the filter bottle as a whole; and the provision of the filter bottle handle facilitates the lifting of the filter bottle from the water purification equipment; and the provision of the filter element handle facilitates the lifting of the first filter component from the filter bottle, so that the reverse osmosis filter element and the pre-filter element and the post-filter element can be separated and disassembled, thereby ensuring the full use of each filter element, reducing the overall replacement cost of the composite filter element, and further reducing the use cost of the composite filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the composite filter element of the water purification device of the present invention;

[0027] Figure 2 An exploded view of the overall structure of the composite filter element of the water purification device of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of part A;

[0029] Figure 4 It is the overall structural schematic diagram of the filter bottle cover;

[0030] Figure 5 It is an exploded view of the overall structure of the second filter assembly;

[0031] Figure 6 It is a cross-sectional schematic diagram of a composite filter element of a water purification device of the present invention;

[0032] Figure 7 for Figure 6 A magnified view of part B;

[0033] Figure 8 for Figure 6 Enlarged view of part C;

[0034] Fig. 9 It is a schematic diagram of the matching relationship between the filter element cover and the filter bottle cover of the present invention;

[0035] Fig.10 It is a structural explosion diagram of the filter element cover and the filter bottle cover of the present invention;

[0036] Fig.11 This is a structural explosion diagram of the filter element cover and the filter bottle cover from another perspective of the present invention.

[0037] Description of Figure Numbers:

[0038]

[0039]

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

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

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

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only 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 present invention.

[0044] The present invention proposes a composite filter element for a water purification device, in which a central tube 340 is set in a filter bottle 100, and a second filter component 300 for reverse osmosis filtration is installed between the filter bottle 100 and the central tube 340, and then the first filter component 200 is detachably installed in the central tube 340, so that the overall disassembly of the first filter component 200 is independent of the second filter component 300, and then when the pre-filter element 221 and / or the post-filter element 222 reach the end of their service life, only the pre-filter element 221 and / or the post-filter element 222 need to be replaced, and the service life of the reverse osmosis filter element 310 in the second filter component 300 can be fully utilized, thereby reducing the overall use cost of the composite filter element.

[0045] The composite filter element proposed in the present invention includes a filter bottle 100, a first filter component 200, a second filter component 300 and a central tube 340; wherein, the filter bottle 100 is directly installed in the water purification equipment or is arranged outside the water purification equipment and connected to the water purification equipment, and the central tube 340 is arranged in the filter bottle 100, so that an installation space is formed between the inner wall of the filter bottle 100 and the outer wall of the central tube 340, and the second filter component 300 is arranged in the installation space of the filter bottle 100; the second filter component 300 will filter the solutes such as salt ions in the water, thereby reducing the concentration of the solutes such as salt ions in the water; the first filter component 200 is detachably installed in the central tube 340, and will filter out impurities contained in the water and / or improve the taste of the water.

[0046] Specifically, the central tube 340 is coaxially arranged in the filter bottle 100, and a filter bottle cap 410 is arranged on the top of the filter bottle 100. The second filter assembly 300 includes a reverse osmosis filter element 310, and the reverse osmosis filter element 310 is arranged in the installation space formed between the inner wall of the filter bottle 100 and the outer wall of the central tube 340. In order to fix the reverse osmosis filter element 310 in the filter bottle 100, the second filter assembly 300 also includes a reverse osmosis top cover 320 and a reverse osmosis bottom cover 330. The reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are respectively arranged on the top and bottom of the reverse osmosis filter element 310, and the reverse osmosis top cover 320 and the reverse osmosis bottom cover 330 are both provided with a reverse osmosis filter element 310 groove 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; and the filter bottle cover 410 is used to provide a seal for the filter bottle 100, thereby ensuring the normal operation of the reverse osmosis filter element 310.

[0047] The first filter assembly 200 is arranged in the central tube 340; specifically, the central tube 340 is used to provide a storage space for the first filter assembly 200; the central tube 340 will separate the second filter assembly 300 from the first filter assembly 200, so that the two do not interfere with each other; and the central tube 340 will block the direct contact between the first filter assembly 200 and the reverse osmosis filter element 310, thereby blocking the direct impact of the water flow on the first filter assembly 200, and ensuring the overall service life of the first filter assembly 200. Accordingly, when filtering water, the water flow will flow from the inner wall of the filter bottle 100 to the outer wall of the central tube 340, so that the water flow will flow through the reverse osmosis filter element 310, thereby reducing the concentration of solutes such as salt ions in the water.

[0048] It should be noted that a reverse osmosis wastewater cavity is provided on the filter bottle cover 410, and the reverse osmosis wastewater cavity is communicated with the installation space between the filter bottle 100 and the central tube 340; the reverse osmosis filter element 310 fits tightly with the central tube 340, so that after the water flow enters the reverse osmosis filter element 310, only a part of the water will pass through the reverse osmosis filter element 310 under the action of pressure, while the remaining part of the water flow cannot pass through the reverse osmosis filter element 310 but passes through the reverse osmosis top cover 320 and then is discharged from the filter bottle 100 through the reverse osmosis wastewater cavity; reverse osmosis filtration separates solutes in water based on the different rates at which solutes such as salt ions and water molecules pass through the reverse osmosis filter membrane, so that the water that does not pass through the reverse osmosis filter element 310 and enters the reverse osmosis wastewater cavity will take away most of the impurity solutes such as salt ions, thereby ensuring the overall filtering effect of the second filter component 300.

[0049] In this embodiment, the first filter assembly 200 includes a pre-filter element 221 and a post-filter element 222. The top of the pre-filter element 221 is connected with a filter element cover 210. The filter bottle cover 410 is provided with a clamping groove 418 for the filter element cover 210 to be inserted. The setting of the clamping groove 418 enables the first filter assembly 200 as a whole to be directly inserted into the central tube 340 or directly removed from the central tube 340. Thus, the disassembly of the first filter assembly 200 is convenient. The filter bottle cover 410 is provided with a reverse osmosis water inlet cavity, the filter element cover 210 is provided with a second water outlet 213, and the central tube 340 is provided with a plurality of first water holes 340a. The water flows into the filter bottle 100 through the reverse osmosis water inlet cavity, and then enters the post-filter element 222 through the first water holes 340a after being filtered by the second filter assembly 300, and then is discharged through the second water outlet 213.

[0050] Accordingly, in order to match the detachability of the first filter assembly 200 , a through hole 321 is provided on the reverse osmosis top cover 320 for the central tube 340 to extend out, so that the first filter assembly 200 can be directly taken out of the central tube 340 when the first filter assembly 200 is disassembled.

[0051] It should be noted in the present embodiment that the first filter assembly 200 further includes an upper end cover 250 and a lower end cover 260, the front filter element 221 and the rear filter element 222 are arranged in the central tube 340, the upper end cover 250 is connected to the top end of the front filter element 221, and the lower end cover 260 is arranged on the bottom end of the rear filter element 222; and the filter element cover 210 is connected to the upper end cover 250, and a filter element handle 270 is arranged on the filter element cover 210; therefore, when the first filter assembly 200 needs to be replaced, the user can lift the filter element handle 270 and bring up the filter element cover 210, and the filter element cover 210 will bring up the upper end cover 250, the rear filter element 222 and the lower end cover 260, thereby lifting the first filter assembly 200 as a whole; thereby completing the replacement of the first filter assembly 200.

[0052] It should be noted that the first filter component 200 may include only the pre-filter element 221, only the post-filter element 222, or both the pre-filter element 221 and the post-filter element 222; specifically, the pre-filter element 221 may be disposed between the upper end cover 250 and the post-filter element 222, the pre-filter element 221 may also be disposed between the lower end cover 260 and the post-filter element 222, the pre-filter element 221 may also be disposed in parallel with the post-filter element 222 between the upper end cover 250 and the lower end cover 260, or the post-filter element 222 may be replaced as a whole with the pre-filter element 221, the specific positions of the pre-filter element 221 and the post-filter element 222 may be designed according to actual usage requirements, and this is not limited in this embodiment.

[0053] However, it needs to be further explained that when there is only a pre-filter element 221, the upper end cover 250 and the lower end cover 260 are directly arranged at the top and bottom ends of the pre-filter element 221; when there is only a post-filter element 222, the upper end cover 250 and the lower end cover 260 are arranged at the top and bottom ends of the post-filter element 222.

[0054] When the front filter element 221 and the rear filter element 222 exist at the same time, the front filter element 221 is placed on top and the rear filter element 222 is placed on the bottom. The front filter element 221 is hollow, and a partition 280 is connected to the bottom of the front filter element 221. The rear filter element 222 is arranged in the partition 280. A water outlet pipe 230 for discharging pure water is arranged at the top of the partition 280. The partition 280 is connected to the upper end cover 250 through the water outlet pipe 230. A plurality of second water holes 280a are provided on the partition 280. When the water is filtered by the reverse osmosis filter element 310, it can pass through the first water hole 340a and the second water hole 280a. After entering the partition 280, the water will flow through the post-filter element 222 and be filtered. Before the water flows through the reverse osmosis filter element 310, that is, after the water flows through the pre-filter element 221, it will be pressurized by the booster pump to increase the water pressure to pass through the reverse osmosis filter element 310. After passing through the reverse osmosis filter element 310, the water still has a high pressure, and the central tube 340 will block part of the water pressure. However, the post-filter element 222 may still be damaged due to excessive water pressure. Therefore, the setting of the partition 280 will further reduce the impact of the water flow on the post-filter element 222, and further improve the structural stability and service life of the post-filter element 222.

[0055] It should be noted that the bottom end of the partition 280 is the opening of the partition 280, and the lower end cover 260 is arranged on the bottom end of the partition 280, so that the lower end cover 260 can limit the position of the post-filter element 222; and during installation, the post-filter element 222 can be placed in the partition 280 first, and then the partition 280 can be closed by the lower end cover 260; specifically, the lower end cover 260 protrudes toward the inside of the partition 280 to form a limiting protrusion 261, and the limiting protrusion 261 and the inner wall of the partition 280 jointly limit the post-filter element 222. Limiting; the top of the partition 280 also protrudes into the cylinder to form a limiting tube 283, the limiting tube 283 is connected to the water outlet pipe 230, and the limiting tube 283 and the inner wall of the partition 280 jointly limit the rear filter element 222, so that the limiting protrusion 261, the limiting tube 283 and the inner wall of the partition 280 will jointly limit the rear filter element 222, reducing the movable range of the rear filter element 222, thereby improving the structural strength of the rear filter element 222, and reducing the possibility of the rear filter element 222 being damaged by the impact of water flow.

[0056] Based on the above description, the filter element cover 210 is also provided with a plurality of water inlets, including a second water outlet 213, and the second water outlet 213 is connected to the water outlet pipe 230; the filter bottle cover 410 is provided with a plurality of water channels, two of which are respectively connected to the reverse osmosis water inlet chamber and the reverse osmosis waste water chamber, and the water inlets correspond to the water channels one by one, that is, the number of water channels is greater than or equal to the number of water inlets; and the longitudinal cross-sectional area of ​​the water channel is smaller than the longitudinal cross-sectional area of ​​the water inlet, so that a certain height difference is allowed between the water inlet and the water channel when the first filter component 200 is disassembled or installed; a flexible resistance member 500 is also provided on the water inlet, and the flexible resistance member 500 will conflict with the filter bottle cover 410; specifically, since the first filter component 200 is relative to the filter bottle 100 is detachable as a whole, and the water path between the filter bottle cover 410 and the filter element cover 210 needs to be connected, so it is necessary to open a water inlet and a water channel to facilitate the integration of the composite filter element as a whole; and there is a certain range of movement between the filter bottle cover 410 and the filter element cover 210, so a flexible resistance member 500 is required to provide a seal between the water inlet and the water channel, and the longitudinal cross-sectional area of ​​the water channel is continuously smaller than the water inlet, so that when the filter element cover 210 moves within a certain range, the water inlet and the water channel can still correspond, and when the filter element cover 210 is embedded in the snap-in groove 418, the flexible resistance member 500 will be deformed, and the deformation of the flexible resistance member 500 can match the height difference between the water channel and the water inlet, and the flexible resistance member 500 can also provide a seal between the water inlet and the water channel when deformed.

[0057] The multiple water outlets include a first water inlet 211, a first water outlet 212 and a second water outlet 213. The first water inlet 211 and the first water outlet 212 respectively introduce raw water (water to be filtered) through the pre-filter 221 and export water filtered by the pre-filter 221, and the second water outlet 213 exports water filtered by the post-filter 222, that is, exports purified water. Among the multiple water channels, there is one that is connected to the first water inlet 211, the first water outlet 212, the second water outlet 213, the reverse osmosis water inlet chamber and the reverse osmosis water outlet chamber to form an overall flow path.

[0058] It should be noted that the first filter component 200 provided in this embodiment may include a pre-filter element 221 or may not include the pre-filter element 221; when the pre-filter element 221 is included, the pre-filter element 221 is hollow, and the outlet pipe 230 passes through the pre-filter element 221 and is connected to the second water outlet 213, and a sealing groove 284 is opened on the outer peripheral wall of the top end of the partition 280, and a plurality of sealing rings 285 are arranged in the sealing groove 284 to isolate the water path between the pre-filter element 221 and the post-filter element 222; and when the pre-filter element 221 is not included, the pre-filter element 221 can be directly removed, that is, this embodiment can contain the installation position of the pre-filter element 221.

[0059] Based on the above description, if the pre-filter element 221 is installed, the bottom end of the pre-filter element 221 is arranged on the top end of the partition 280, and the top end of the pre-filter element 221 is connected to the upper end cover 250; specifically, a limiting ring 281a for limiting the pre-filter element 221 is arranged on the top end of the partition 280, and a mounting groove for installing the pre-filter element 221 is formed on the upper end cover 250, and the cooperation of the limiting ring 281a and the mounting groove will limit the pre-filter element 221. The pre-filter element 221 is in the hollow position, and the outlet pipe 230 will pass through the pre-filter element 221; if the pre-filter element 221 is not set, the pre-filter element 221 can be directly removed, or the length of the partition 280 and the post-filter element 222 can be extended so that the partition 280 is connected to the upper end cover 250; the above is only an example, and the installation relationship and matching relationship between the pre-filter element 221 and the post-filter element 222 in the first filter component 200 can be changed according to actual usage requirements.

[0060] It should be noted that when the pre-filter element 221 and the post-filter element 222 are installed at the same time, the partition 280 will separate the pre-filter element 221 and the post-filter element 222 in the central tube 340 to ensure that the water paths of the two are not mixed; specifically, the raw water will enter from the first water inlet 211, be filtered by the pre-filter element 221, pass through the hollow part of the pre-filter element 221, and then be discharged from the first water outlet 212 to form the first purified water, and the first purified water will then enter the filter bottle 100 through the reverse osmosis water inlet cavity. The second filter assembly 300 filters the water, which is the second purified water. The second purified water then passes through the first water hole 340a, i.e., the second water hole 280a, and enters the partition 280. The second purified water is then filtered by the post-filter element 222 to form pure water. The pure water then passes through the hollow portion of the post-filter element 222, and then through the limiting tube 283 and the outlet pipe 230 to the second outlet port 213 and is discharged from the filter bottle 100. The pure water discharged from the filter bottle 100 is provided to the user.

[0061] When only the pre-filter 221 is installed, the raw water will also be filtered through the pre-filter 221 to form the first clean water, and then the first clean water will be filtered through the second filter assembly 300 to form the second clean water, and the second clean water will directly enter the partition 280 and then be discharged through the outlet pipe 230 and the second outlet port 213; or the pre-filter 221 is installed as a whole in the central tube 340, the installation position of the post-filter 222 is cancelled, and an additional second clean water outlet is opened to discharge the second clean water.

[0062] When only the post-filter element 222 is installed, the water entering the second filter assembly 300 still needs to be filtered by the pre-filter element 221 first; the post-filter element 222 can also be installed as a whole in the central tube 340, and the installation position of the pre-filter element 221 can be cancelled. If the installation position of the pre-filter element 221 is cancelled, the setting of the partition 280 can also be cancelled. After the setting of the partition 280 is cancelled, the setting of the water outlet pipe 230 can be cancelled, and the second water outlet 213 and the first water outlet 212 can be combined; and the second clean water filtered by the second filter assembly 300 still passes through the first water hole 340a or the first water hole 340a and the second water hole 280a and then is filtered through the post-filter element 222, and then discharged from the filter bottle 100.

[0063] The above is an example of the first filter component 200 being detachably arranged in the central tube 340, and the reverse osmosis filter element 310 has a longer service life than the pre-filter element 221 and the post-filter element 222. Therefore, based on the above description, the pre-filter element 221 and / or the post-filter element 222 can be replaced compared to the reverse osmosis filter element 310, and the reverse osmosis filter element 310 can also be replaced compared to the water purification equipment.

[0064] In order to facilitate the user to replace the filter bottle 100 equipped with the reverse osmosis filter element 310 or the first filter component 200 including the pre-filter element 221 and / or the post-filter element 222 respectively, a filter bottle 100 handle is provided on the filter bottle cover 410, and a filter element handle 270 is provided on the first filter component 200; therefore, when the user needs to replace the filter bottle 100 or the first filter component 200 respectively, the first filter component 200 can be taken out of the filter bottle 100, and the filter bottle 100 can also be taken out of the water purification equipment, thereby facilitating the user to replace the reverse osmosis filter element 310 and the pre-filter element 221 and / or the post-filter element 222.

[0065] Specifically, the shape of the filter element handle 270 is similar to a U-shape, and adapter posts 270a are provided at both ends of the filter element handle 270, and adapter grooves 214 are opened on the opposite sides of the filter element cover 210, and the adapter posts 270a are rotatably connected in the adapter grooves 214; thus, the filter element handle 270 can be rotated up and down, so that the filter element handle 270 can be placed on the filter element cover 210 for storage when not in use, thereby reducing the overall space occupied by the filter element cover 210; it should be noted that in order to ensure the structural strength of the filter element handle 270, the filter element handle 270 can be manufactured using an integrated molding process.

[0066] The adapter groove 214 is a waist-shaped groove, that is, the two ends of the adapter groove 214 are arc-shaped, and the extension direction of the adapter groove 214 intersects with the height direction of the filter bottle 100; further, the length of the adapter groove 214 is greater than twice the diameter of the bottom surface of the adapter column 270a, and the extension direction of the adapter groove 214 is perpendicular to the axial direction of the composite filter element; further, the extension direction of the adapter groove 214 can be parallel to the horizontal plane; the setting of the adapter groove 214 allows the adapter column 270a to slide in the adapter groove 214, so that when the user places the first filter component 200 in the central tube 340, the filter element handle 270 can be rotated to be parallel to a certain cross-section of the filter element cover 210 and then slide to reduce the gap between the filter element handle 270 and the filter element cover 210 , thereby reducing the space occupied by the filter element handle 270; and when the first filter component 200 needs to be lifted out of the central tube 340, the filter element handle 270 can be slid first to increase the gap between the filter element handle 270 and the filter element cover 210, and then the filter element handle 270 can be rotated to a position suitable for the user to exert force to lift the first filter component 200; in summary, the rotating and slidable setting of the filter element handle 270 makes the space occupied by the filter element handle 270 when the first filter component 200 is installed in the central tube 340 smaller, which facilitates the overall integration and compounding of the filter element; and when the first filter component 200 needs to be lifted out of the central tube 340, the filter element handle 270 can facilitate the user to lift out the first filter component 200, thereby improving the convenience during use.

[0067] Specifically, in order to limit the rotation of the filter element handle 270 when it is stored, a limiting structure 410b is provided on the filter bottle cover 410. In this embodiment, the limiting structure 410b is specifically a limiting portion 410b1 protruding from the clamping groove 418, and a sliding portion 270b is provided on both ends of the filter element handle 270. The length direction of the sliding portion 270b is parallel to the length direction of the adapter groove 214, and the adapter column 270a is provided on the sliding portion 270b; in addition, a recessed portion 410b is formed on the sliding portion 270b to be parallel to the length direction of the adapter groove 214. The limit portion 410b1 is matched with the recessed portion 270b1, and the length of the limiting portion 410b1 is less than the length of the adapter groove 214; the limiting portion 410b1 will limit the rotation of the filter element handle 270 in the storage state, and the filter element handle 270 can release the restriction of its rotation state by the limiting portion 410b1 through sliding; the sliding portion 270b will cooperate with the filter element cover 210 to further limit the sliding direction of the filter element handle 270 and reduce the distance between the filter element handle 270 and the filter element cover 210, so that the filter element handle 270 is not easy to shake left and right.

[0068] Furthermore, two limiting portions 410b1 are symmetrically arranged on the filter bottle cover 410, and recessed portions 270b1 are arranged on both ends of the filter element handle 270; more specifically, the limiting portion 410b1 is an L-shaped plate 410b2, and the recessed portion 270b1 is an L-shaped groove 270b2. The L-shaped plate 410b2 as a whole is matched with the L-shaped groove 270b2, and the filter element handle 270 can release the matching between the L-shaped plate 410b2 and the L-shaped groove 270b2 by sliding; similarly, the filter element handle 270 can also make the L-shaped plate 410b2 and the L-shaped groove 270b2 match by sliding; one end of the L-shaped plate 410b2 extends toward the top of the clamping groove 418, so that when the L-shaped plate 410b2 and the L-shaped groove 270b2 are matched, the rotation of the filter element handle 270 will be limited.

[0069] It should be noted that the limiting portion 410b1 and the recessed portion 270b1 may adopt other shapes that can limit the filter element handle 270 from rotating upward in the storage state. This embodiment is only used as an example.

[0070] In order to facilitate the user to slide the filter cartridge handle 270 when it is in the storage state to release the rotation restriction, an arc-shaped groove 270c is formed on the top of the filter cartridge cover 210, and an arc-shaped notch 270d is opened on the side wall of the arc-shaped groove 270c close to the filter cartridge handle 270; the setting of the arc-shaped groove 270c and the arc-shaped notch 270d allows the user to insert his finger into the arc-shaped groove 270c, and then apply force to the filter cartridge handle 270 through the arc-shaped notch 270d, thereby facilitating the user to slide the filter cartridge handle 270 to release its rotation restriction, and further facilitating the user to take out the first filter component 200.

[0071] Correspondingly, in order to facilitate the user to lift the filter bottle 100 from the water purification equipment, a filter bottle 100 handle is provided on the filter bottle cover 410; the filter bottle 100 handle is rotatably connected to the filter bottle cover 410; specifically, connecting columns 420a are provided on both ends of the filter bottle 100 handle, and the filter bottle cover 410 is provided with a connecting groove 417 into which the connecting column 420a extends, and the connecting column 420a is rotatably connected in the connecting groove 417; the provision of the filter bottle 100 handle will facilitate the user to lift the filter bottle 100 from the water purification equipment, thereby facilitating the user to replace the reverse osmosis filter element 310.

[0072] Specifically, since the filter bottle 100 is heavy, in order to improve the stability between the handle of the filter bottle 100 and the filter bottle cover 410 when the filter bottle 100 is lifted up and improve the user experience, a lug 420a1 is provided on the side wall of the portion of the connecting column 420a that extends into the connecting groove 417, and a lug 420a1 groove 417a is provided on the filter bottle cover 410 for the lug 420a1 to be inserted into. When the handle of the filter bottle 100 is rotated to lift the filter bottle 100, the lug 420a1 will be inserted into the lug 420a1 groove 417a, so that the cooperation of the lug 420a1 and the lug 420a1 groove 417a reduces the possibility of the filter bottle 100 shaking when it is lifted up, making it easier to use. The lifting process of the filter bottle 100 is more stable, which is convenient for the user to exert force, thereby improving the user experience; it should be noted that the lug 420a1 groove 417a is connected to the connecting groove 417, and when the handle of the filter bottle 100 is not subject to the gravity of the filter bottle 100, the lug 420a1 can rotate unimpeded in the connecting groove 417 and the lug 420a1 groove 417a within the rotatable range of the handle of the filter bottle 100; when the handle of the filter bottle 100 is subject to the gravity of the filter bottle 100, the lug 420a1 rotates until its length direction is parallel to the axial direction of the composite filter element and is inserted into the lug 420a1 groove 417a, thereby limiting the shaking of the filter bottle 100.

[0073] It should also be noted that in order to reduce the space occupied by the filter bottle 100 including the first filter component 200 as a whole in the water purification equipment, the filter element handle 270 and the filter bottle 100 handle are located on the same side of the filter bottle 100; more preferably, the filter bottle 100 handle and the filter element handle 270 are both U-shaped, semicircular or U-shaped symmetrical shapes to facilitate the rotation of the two; in addition, the symmetry axes of the two are parallel and both intersect with the axis of the composite filter element, and the size of the filter element handle 270 is smaller than the handle of the filter bottle 100, so that the filter element handle 270 and the filter bottle 100 handle can reduce the space occupied by the filter bottle 100 as a whole in the water purification equipment, and further improve the overall integration of the composite filter element.

[0074] In order to further reduce the space occupied by the filter element handle 270 and the filter bottle 100 handle while ensuring the structural strength of the two, the filter bottle 100 handle and the filter element handle 270 are both integrally formed; in addition, in order to further reduce the space occupied by the filter bottle 100 handle, the filter bottle 100 handle is configured as a strip; and a reinforcing rib 420b is integrally formed on the side of the filter bottle 100 handle away from the filter bottle 100, and the outer arc edge of the reinforcing rib 420b has a smooth transition with the filter bottle 100 handle. The reinforcing rib 420b increases the thickness of the filter bottle 100 handle and improves the structural strength of the filter bottle 100 handle. When the filter bottle 100 needs to be lifted out, the user can use the reinforcing rib 420b to apply force to the filter bottle 100 handle, thereby causing the filter bottle 100 handle to rotate.

[0075] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, 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 for water purification equipment, characterized in that: include: A filter bottle, wherein the filter bottle is provided with a filter bottle cover; A central tube, the central tube being disposed in the filter bottle; a first filter assembly, the first filter assembly being detachably disposed in the central tube; The filter bottle cover is provided with a filter bottle handle, the first filter assembly is connected with a filter element cover, the filter element cover is provided with a filter element handle, and the filter bottle cover is provided with a clamping groove for the filter element cover to be embedded.

2. The composite filter element of the water purification equipment according to claim 1, characterized in that: Both ends of the filter element handle are provided with transfer posts, and transfer grooves are provided on the two opposite sides of the filter element cover, and the transfer posts are rotatably connected in the transfer grooves.

3. The composite filter element of the water purification equipment according to claim 2, characterized in that: The adapter groove is a waist-shaped groove, the extension direction of the adapter groove intersects with the height direction of the filter bottle, and the adapter column is slidable in the adapter groove.

4. The composite filter element of the water purification equipment according to claim 3, characterized in that: Both ends of the filter bottle handle are provided with connecting posts, and the filter bottle cover is provided with connecting grooves for the connecting posts to extend into, and the connecting posts are rotatably connected in the connecting grooves.

5. The composite filter element of the water purification equipment according to claim 4, characterized in that: The side wall of the connecting column extending into the connecting groove is provided with a lug, and the filter bottle cover is provided with a lug groove for inserting the lug.

6. The composite filter element of the water purification equipment according to claim 3, characterized in that: A limiting portion is protrudingly formed on the filter bottle cover, and a recessed portion matching the limiting portion is formed on the end of the filter element handle, and the length of the limiting portion is smaller than the length of the adapter groove.

7. The composite filter element of the water purification equipment according to claim 6, characterized in that: Two limiting parts are symmetrically arranged on the filter bottle cover, and recessed parts are arranged on both ends of the filter element handle.

8. The composite filter element of the water purification equipment according to claim 6, characterized in that: The top of the filter element cover is concave to form an arc-shaped groove, and an arc-shaped notch is opened on one side of the arc-shaped groove close to the filter element handle.

9. The composite filter element of the water purification equipment according to claim 1, characterized in that: The filter element handle and the filter bottle handle are located on the same side of the filter bottle.

10. The composite filter element of the water purification equipment according to claim 1, characterized in that: The filter bottle handle is strip-shaped and U-shaped.

11. The composite filter element of the water purification equipment according to claim 10, characterized in that: A reinforcing rib is arranged on one side of the filter bottle handle away from the filter bottle.

12. The composite filter element of the water purification equipment according to claim 1, characterized in that: The filter element cover is provided with a plurality of water inlets, the filter bottle cover is provided with a plurality of water channels, and the water inlets are connected to the water channels in a one-to-one correspondence.

13. The composite filter element of the water purification equipment according to claim 12, characterized in that: The longitudinal cross-sectional area of ​​the water channel is smaller than the longitudinal cross-sectional area of ​​the water outlet.

14. The composite filter element of the water purification equipment according to claim 13, characterized in that: A flexible abutment is provided on the water inlet, and the flexible abutment is in abutment with the filter bottle cover.

Images