CN206156891U - Composite filter element, composite filter element assembly for water purifier, and water purifier - Google Patents

Abstract

The utility model discloses a composite filter element, be used for compound filter element group spare and water purifier of water purifier, composite filter element includes the preliminary treatment filter core, meticulous filtration filter core and the active carbon filter core of arranging in proper order from outside to inside, meticulous filtration filter core includes first collector pipe and meticulous filtration membrane, the active carbon filter core includes: the second water collecting pipe is arranged in the first water collecting pipe, the outer peripheral wall of the second water collecting pipe except for the lower end of the second water collecting pipe is spaced from the inner peripheral wall of the first water collecting pipe, and the lower end of the second water collecting pipe is connected with the first water collecting pipe in a sealing mode; the active carbon is arranged in the second water collecting pipe, the lower end of the active carbon is connected with the second water collecting pipe in a sealing mode, a water outlet hole which is communicated along the axial direction is formed in the active carbon, and the upper end of the water outlet hole is sealed. According to the utility model discloses a composite filter element, composite filter element's change is convenient, can realize the big flux and go out water.

Description

Composite filter element, composite filter element assembly for water purifier, and water purifier

technical field

The utility model relates to the field of water purification, in particular to a composite filter element, a composite filter element assembly for a water purifier and a water purifier.

Background technique

In related technologies, water purification equipment such as water purifiers usually use PP cotton (that is, artificial chemical fibers made of polyester fibers), activated carbon, etc. as pre-filter elements, and then connect RO membranes in series (wherein, RO is reverse osmosi s, that is, reverse The English abbreviation of osmosis, RO membrane is reverse osmosis membrane, its pore size is as small as nanometers, under a certain pressure, water molecules can pass through the RO membrane, and inorganic salts, heavy metal ions, organic matter, colloids, bacteria, viruses, etc. Impurities cannot pass through the RO membrane, so that the permeable pure water and the impermeable wastewater are strictly separated) and the water purification system composed of multi-stage single-function filter elements such as activated carbon to purify the water. However, the pipeline connection of the entire water purification system is complicated, the external dimensions are large, it is inconvenient to install and replace parts, and the risk of water leakage is high when using multi-joint connections. More importantly, the service life of multi-stage filter elements is inconsistent. For example, the service life of PP cotton is 3 months, that of activated carbon is 6 months, and that of RO membrane is 24 months, so that users need to replace filter elements with 3 to 5 levels. There are too many, and the replacement time is not easy to grasp, and the replacement of the filter element needs to be completed by professional installers, resulting in poor user experience and high overall cost.

Moreover, the current water purifier is mainly based on small flow, but the water purifier with small flow has the following disadvantages: (1) the water in the pressure tank is not clean, and when it is not used for a long time, the water in the pressure tank will contact the rubber air bag Will deteriorate and have peculiar smell; (2) The water output is limited. When the water consumption is large, after the water in the pressure tank is used up, the water purification equipment needs to be stopped for a period of time to refill the pressure tank to ensure a large water output; ( 3) The pressure tank is outside the water purifier, which will take up more space under the kitchen.

Utility model content

The utility model aims to solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to propose a composite filter element, which has a smaller volume, requires less work to replace the filter element, and can adjust the mouthfeel of water outlet and realize large-flux water outlet.

Another purpose of the present utility model is to provide a composite filter element assembly having the above-mentioned composite filter element.

Another object of the utility model is to provide a water purifier with the above-mentioned composite filter element assembly.

The composite filter element according to the first aspect of the utility model includes a pretreatment filter element, a fine filter element and an activated carbon filter element arranged sequentially from outside to inside, and the fine filter element includes a first water collecting pipe and a fine filter membrane, and the first set A plurality of water collection holes are formed on the side wall of the water pipe. The fine filter membrane is sleeved on the outside of the first water collection pipe and covers the plurality of water collection holes. The upper part of the first water collection pipe is provided with Partition plate, the activated carbon filter element is arranged in the first water collection pipe, and the activated carbon filter element includes: a second water collection pipe, the second water collection pipe is arranged in the first water collection pipe, and the second water collection pipe The upper end surface of the upper end surface and the lower surface of the partition plate are spaced apart from each other, and the outer peripheral wall of the second water collecting pipe except the lower end thereof is spaced apart from the inner peripheral wall of the first water collecting pipe, the second collecting pipe The lower end of the water pipe is sealingly connected with the first water collection pipe; activated carbon, the activated carbon is arranged in the second water collection pipe, and the outer peripheral wall of the activated carbon except the lower end is connected with the inner peripheral wall of the second water collection pipe Spaced apart from each other, the lower end of the activated carbon is sealed and connected to the second water collecting pipe, and a water outlet hole penetrating in the axial direction is formed on the activated carbon, and the upper end of the water outlet hole is closed.

According to the composite filter element of the present invention, by combining the pretreatment filter element, the fine filter element and the activated carbon filter element into a whole, the tap water can be filtered layer by layer through the pretreatment filter element, the fine filter element and the activated carbon filter element in sequence, which ensures the water quality of the effluent, and the composite The volume of the filter element is small, which realizes the uniform life of each filter layer in the composite filter element, so as to reduce the workload of replacing the filter element. At the same time, the composite filter element generally has a cylindrical structure, its filtration efficiency is high, and it can achieve large flux of water. Moreover, the second water collecting pipe can protect the activated carbon.

In addition, the composite filter element according to the utility model can also have the following additional technical features:

According to an embodiment of the present utility model, the upper end of the activated carbon is covered with a blocking member, and the blocking member blocks the upper end of the water outlet hole, and the outer peripheral wall of the blocking member is in contact with the second collector. The inner peripheral walls of the water pipes are spaced apart from each other; or the upper end of the activated carbon extends to the partition, and the partition blocks the upper end of the water outlet hole.

According to an embodiment of the present utility model, the lower end of the second water collecting pipe has an outwardly extending mounting plate, and the mounting plate is spaced apart from the inner peripheral wall of the pretreatment filter element to define a water outlet, wherein The fine filter element is located above the mounting plate.

According to an embodiment of the present utility model, at least one guide groove communicating with the water outlet is formed on the upper surface of the installation plate.

According to an embodiment of the present utility model, there are multiple guide grooves, all of which are straight grooves and arranged in parallel with each other at intervals, and both ends of each guide groove pass through the mounting plate. The outer peripheral wall; or a plurality of guide grooves are arranged at intervals along the circumference of the installation plate, each of the guide grooves extends along the radial direction of the installation plate and penetrates through the outer peripheral wall of the installation plate.

According to an embodiment of the present utility model, the lower ends of the first water collection pipe and the second water collection pipe are connected by a threaded structure, and at least one sealing ring is provided above the threaded structure, and the sealing ring is located on the Between the inner peripheral wall of the first water collecting pipe and the outer peripheral wall of the second water collecting pipe.

According to an embodiment of the present utility model, at least one of the inner peripheral wall of the first water collecting pipe and the outer peripheral wall of the second water collecting pipe is formed with a receiving groove for receiving the sealing ring.

According to an embodiment of the present invention, a conduit is provided at the bottom of the activated carbon, the conduit communicates with the water outlet hole, and the conduit is airtightly connected with the second water collecting pipe.

According to the second aspect of the utility model, the composite filter element assembly for the water purifier comprises a filter bottle, the top of the filter bottle is open; a filter cover, the filter cover is arranged on the top of the filter bottle, and the filter cover An accommodating space is defined between the filter bottle; according to the composite filter element of the first aspect of the utility model, the composite filter element is detachably arranged in the accommodating space, and the upper peripheral wall of the composite filter element is in contact with the The inner peripheral walls of the filter bottle are sealed and connected, and the lower end of the pretreatment filter element of the composite filter element is sealed and connected with the inner wall of the filter bottle.

The water purifier according to the third aspect of the utility model includes the composite filter element assembly for the water purifier according to the second aspect of the utility model.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a sectional view of a composite filter element according to an embodiment of the present invention;

Figure 2 is an enlarged view of part A circled in Figure 1;

Fig. 3 is an enlarged view of part B circled in Fig. 1 .

Reference signs:

100: composite filter element; 101: sealing ring; 101a: holding tank; 102: handle; 103: sealing cup;

110: pretreatment filter element; 120: fine filter element; 130: activated carbon filter element;

111: first pretreatment filter element layer; 112: second pretreatment filter element layer; 113: skeleton;

121: first water collection pipe; 121a: water collection hole; 122: fine filter membrane; 123: clapboard;

131: Second water collection pipe; 132: Activated carbon; 132a: Water outlet hole; 133: Blocking piece; 133a: Stop rib; 134: Mounting plate; 134a: Water outlet; 134b: Guide groove; 135: Conduit; 136: Extension Tube.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Disassembled connection, or integral connection; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

A composite filter element 100 according to an embodiment of the first aspect of the present invention will be described below with reference to FIGS. 1-3 .

As shown in FIGS. 1-3 , the composite filter element 100 according to the embodiment of the first aspect of the present invention includes a pretreatment filter element 110 , a fine filter element 120 and an activated carbon filter element 130 arranged in sequence from outside to inside. The composite filter element 100 is a filter element in which the pretreatment filter element 110, the fine filter element 120 and the activated carbon filter element 130 are all combined.

The fine filter element 120 includes a first water collection pipe 121 and a fine filtration membrane 122, a plurality of water collection holes 121a are formed on the side wall of the first water collection pipe 121, and the fine filtration membrane 122 is sleeved on the outside of the first water collection pipe 121, and The fine filter membrane 122 covers a plurality of water collecting holes 121a, and the upper part of the first water collecting pipe 121 is provided with a partition 123 .

The activated carbon filter element 130 is located in the first water collecting pipe 121, and the activated carbon filter element 130 includes: the second water collecting pipe 131 and activated carbon 132, the second water collecting pipe 131 is arranged in the first water collecting pipe 121, the upper end surface of the second water collecting pipe 131 is in contact with the partition The lower surfaces of the plates 123 are spaced apart from each other, and the outer peripheral wall of the second water collecting pipe 131 is spaced apart from the inner peripheral wall of the first water collecting pipe 121 except the lower end thereof, and the lower end of the second water collecting pipe 131 is separated from the first water collecting pipe 121. Sealed connection. Activated carbon 132 is arranged in the second water collecting pipe 131, and the outer peripheral wall of the activated carbon 132 except its lower end is spaced apart from the inner peripheral wall of the second water collecting pipe 131, and the lower end of the activated carbon 132 is sealed with the second water collecting pipe 131, and the activated carbon 132 A water outlet hole 132a penetrating in the axial direction is formed on the top, and the upper end of the water outlet hole 132a is closed.

For example, as shown in Figures 1-3, the pretreatment filter element 110, the fine filter element 120 and the activated carbon filter element 130 form an integral composite filter element 100, and tap water can flow through the pretreatment filter element 110, the fine filter element 120 and the The activated carbon filter element 130 is used for layer-by-layer filtration, so as to ensure the quality of effluent water, and the volume of the composite filter element 100 is small. The composite filter element 100 is generally in a cylindrical structure, and the tap water can be filtered inward through the entire outer peripheral surface of the pretreatment filter element 110. The filtration area is larger, so that the filtration efficiency is higher, and the water flow rate of the composite filter element 100 can be increased to increase the water production. , so that the composite filter element 100 can realize a large flow of water. Moreover, the second water collection pipe 131 is arranged between the fine filter element 120 and the activated carbon 132, which can change the direction of the pure water radially flowing out from the fine filter element 120, thereby slowing down the impact of the pure water on the activated carbon 132 to protect the activated carbon 132 .

Specifically, tap water can flow into the interior of the composite filter element 100 from outside to inside along the radial direction of the composite filter element 100, and first pass through the pretreatment filter element 110 and enter the fine filter element 120 radially inward, wherein the pretreatment filter element 110 can effectively remove the pollutants in the tap water. Rust, silt, absorbing color, peculiar smell, residual chlorine and some organic matter in the water ensure the quality of the water entering the fine filter element 120, thereby prolonging the life of the fine filter element 120. Then, the pure water filtered by the fine filter element 120 flows into the gap between the first water collection pipe 121 and the second water collection pipe 131 through a plurality of water collection holes 121a on the first water collection pipe 121, wherein the water collection holes 121a can be suitably Adjust the speed of the water flow. Because the lower end of the second water collection pipe 131 is sealed with the first water collection pipe 121, the water level in the above-mentioned gap will continue to rise until the water level reaches the upper end of the second water collection pipe 131, and the upper end of the water outlet hole 132a on the activated carbon 132 is closed. Therefore, the water flow can flow into the gap between the second water collecting pipe 131 and the activated carbon 132 from top to bottom. Since the lower end of the activated carbon 132 is sealed with the second water collecting pipe 131, the water flow must pass through the activated carbon 132 to enter the water outlet hole 132a, and the activated carbon 132 can remove volatile VOC (volatile organic compounds, the English abbreviation for volatile organic compounds) in the water. Residual residual chlorine and organic matter retain essential minerals such as trace calcium, silicic acid, carbonate, etc., making the water taste sweet and soft. After the water is filtered by the activated carbon 132, it enters the water outlet hole 132a and flows out from the lower end of the water outlet hole 132a, so that it is convenient for the user to drink.

Wherein, the pretreatment filter element 110 can be PAC (polyaluminium chloride, the English abbreviation of polyaluminum chloride, also known as water purifying agent or coagulant) pretreatment filter element 110, thereby can improve the life-span of pretreatment filter element 110 to one year. The pretreatment filter element 110 may include a first pretreatment filter element layer 111 and a second pretreatment filter element layer 112 arranged sequentially from outside to inside, wherein the first pretreatment filter element layer 111 may be PP (polypropylene, the English abbreviation of polypropylene ) non-woven fabric winding layer, and the filtration accuracy of the PP non-woven fabric winding layer can be set to 5 μ m (that is, micron, which is a unit of length), to ensure the filtering effect, the second pretreatment filter element layer 112 can be activated carbon fiber winding Floor. It can be understood that the thickness of the pretreatment filter element 110 can be set according to different regions and different water quality, so as to better meet the user's demand for water purification. The fine filter element 120 can adopt the multi-membrane page rolling process, that is, the fine filter element 120 is rolled by the fine filter membrane 122 around the first water collection pipe 121, thus the utilization rate of the fine filter membrane 122 can be improved to the greatest extent, wherein , the fine filter membrane 122 may be an RO membrane, but is not limited thereto. Activated carbon 132 can be coconut shell activated carbon, thus, when filtering water, the natural taste factor can be retained, and trace elements can be adjusted, so that the taste of the water can be adjusted to better meet the needs of users.

According to the composite filter element 100 of the embodiment of the present utility model, by arranging the pretreatment filter element 110, the fine filter element 120 and the activated carbon filter element 130 from the outside to the inside and forming a whole, tap water can pass through the pretreatment filter element 110 and the fine filter element 120 in sequence. Layer-by-layer filtration with the activated carbon filter element 130 ensures the quality of the effluent and can adjust the taste of the effluent. The composite filter element 100 has a relatively large filtration area and high filtration efficiency, and can realize large flow of water. Moreover, the second water collection pipe 131 is located between the fine filter element 120 and the activated carbon 132, which can slow down the impact of pure water on the activated carbon 132 to protect the activated carbon 132, and the volume of the composite filter element 100 is small, so that each filter element in the composite filter element 100 can be realized. The uniform life of the filter material reduces the workload of replacing the filter element and reduces the user's use cost.

In some optional embodiments of the present utility model, as shown in Figure 1 and Figure 2, the upper end of the activated carbon 132 is covered with a blocking member 133, the blocking member 133 blocks the upper end of the water outlet hole 132a, and the blocking member 133 The outer peripheral wall of the second water collecting pipe 131 is spaced apart from the inner peripheral wall; or, the upper end of the activated carbon 132 extends to the partition 123, and the partition 123 blocks the upper end of the outlet hole 132a (not shown). Therefore, no matter which of the above-mentioned blocking methods is adopted, the pure water between the first water collecting pipe 121 and the second water collecting pipe 131 cannot directly flow into the water outlet hole 132a of the activated carbon 132, but can only flow in from top to bottom. The gap between the second water collection pipe 131 and the activated carbon 132 is then filtered by the activated carbon 132 and then flows out from the water outlet hole 132a for drinking by the user, which ensures the taste of the water outlet. At the same time, because the upper part of the activated carbon 132 can also purify the pure water role, thereby improving the utilization rate of activated carbon 132. For example, as shown in Figures 1 and 2, the activated carbon 132 can be a cylindrical structure, and the bottom surface of the blocking member 133 can be formed with an upwardly recessed annular groove, and the annular groove can be aligned with the activated carbon 132. The upper ends are adapted to ensure the positioning of the blocking member 133 in a plane perpendicular to the up-down direction, and ensure the sealing effect of the blocking member 133 on the upper end of the water outlet hole 132a.

Optionally, the upper end of the blocking member 133 can substantially abut against the lower surface of the partition 123 (for example, as shown in FIG. There may also be a small gap between the upper end of the blocking member 133 and the lower surface of the dividing plate 123, so as to position the activated carbon 132 up and down, so as to prevent the upper end of the activated carbon 132 from appearing between the peripheral wall of the upper end of the activated carbon 132 and the inner peripheral wall of the second water collecting pipe 131. contact situation.

In a further embodiment of the present utility model, the lower end of the second water collecting pipe 131 has an outwardly extending mounting plate 134, and the mounting plate 134 is spaced apart from the inner peripheral wall of the pretreatment filter element 110 to define a water outlet 134a, wherein The fine filter element 120 is located above the mounting plate 134 . For example, as shown in FIG. 1 , the mounting plate 134 can extend radially and horizontally to be opposite to the outer peripheral wall of the fine filter element 120, thereby effectively ensuring the cleanliness of the fine filter element 120, thereby ensuring the quality of the effluent water. And since the fine filter element 120 cannot be seen from the appearance of the entire composite filter element 100, thereby making the appearance of the entire composite filter element 100 more attractive, an annular water outlet 134a is defined between the mounting plate 134 and the inner peripheral wall of the pretreatment filter element 110. At the waste water outlet, the waste water filtered by the fine filter element 120 can flow downward from the water outlet 134a, thereby not only meeting the user's requirements for the water quality, but also realizing the collection of waste water and protecting the environment.

Furthermore, at least one guide groove 134b communicating with the water outlet 134a may be formed on the upper surface of the installation plate 134 . For example, as shown in Figures 1 and 3, a plurality of guide grooves 134b may be formed by indenting downwards from part of the upper surface of the mounting plate 134, and each guide groove 134b communicates with the water outlet 134a, thus, due to the guide groove 134b is located directly below the fine filter element 120, waste water can fall into the guide groove 134b from the bottom of the fine filter element 120, and be discharged from the water outlet 134a under the guidance of the guide groove 134b. Moreover, when the bottom of the fine filter element 120 is in contact with the upper surface of the mounting plate 134, since the upper surface of the mounting plate 134 is provided with a guide groove 134b, the discharge of waste water will not be affected.

Optionally, there are multiple guide grooves 134b. As shown in FIG. 1 and FIG. The peripheral wall is easy to process and low in cost, and the outer ends of the plurality of guide grooves 134b run through the peripheral wall of the mounting plate 134, thereby ensuring the communication between the guide grooves 134b and the water outlet 134a, and facilitating the discharge of waste water. Certainly, the utility model is not limited thereto, a plurality of guide grooves 134b can also be arranged at intervals along the circumferential direction of the mounting plate 134, and each guide groove 134b extends along the radial direction of the mounting plate 134 and penetrates the outer peripheral wall of the mounting plate 134 (not shown in the figure). shown), thus, it can also play a good diversion effect on waste water.

As shown in Figures 1 and 3, the lower ends of the first water collecting pipe 121 and the second water collecting pipe 131 can be connected by a threaded structure, and at least one sealing ring 101 is arranged above the threaded structure, and the sealing ring 101 is located in the first water collecting pipe. 121 and the outer peripheral wall of the second water collecting pipe 131. Thus, the setting of the thread structure ensures the connection strength and tightness between the first water collecting pipe 121 and the second water collecting pipe 131, and the setting of the sealing ring 101 further ensures the connection between the first water collecting pipe 121 and the second water collecting pipe 131. Therefore, the water entering between the first water collecting pipe 121 and the second water collecting pipe 131 through the fine filter element 120 can continue to flow inward into the activated carbon filter element 130, which improves the water purification efficiency. Moreover, by adopting the above thread structure combined with the sealing ring 101 to perform sealing, the structure is simple, the cost is low, and the sealing is reliable.

Preferably, at least one of the inner peripheral wall of the first water collecting pipe 121 and the outer peripheral wall of the second water collecting pipe 131 is formed with a receiving groove 101 a for receiving the sealing ring 101 . That is to say, the receiving groove 101a for receiving the sealing ring 101 may only be formed on the inner peripheral wall of the first water collecting pipe 121, or only the receiving groove for receiving the sealing ring 101 is formed on the outer peripheral wall of the second collecting pipe 131. 101 a , or the inner peripheral wall of the first water collecting pipe 121 and the outer peripheral wall of the second water collecting pipe 131 are formed with a receiving groove 101 a for receiving the sealing ring 101 . For example, as shown in Fig. 1 and Fig. 3, an accommodating groove 101a for accommodating the sealing ring 101 is formed on the outer peripheral wall of the second water collecting pipe 131, and the accommodating groove 101a plays a role in positioning the sealing ring 101, so that the sealing ring 101 can be avoided. For example, movement occurs during the assembly process or impact of water during use, thereby further ensuring the tightness between the first water collecting pipe 121 and the second water collecting pipe 131 .

It can be understood that, in order to ensure the tightness between the lower ends of the first water collecting pipe 121 and the second water collecting pipe 131, a plurality of upper and lower intervals can be arranged between the lower ends of the first water collecting pipe 121 and the second water collecting pipe 131. Sealing ring 101, for example, two sealing rings 101 are shown for the purpose of illustration in Fig. 1 and Fig. In the technical solution of more sealing rings 101, this also falls within the protection scope of the present invention. Of course, under the premise of ensuring the tightness between the lower ends of the first water collecting pipe 121 and the second water collecting pipe 131, only one sealing ring 101 may be provided between the first water collecting pipe 121 and the lower ends of the second water collecting pipe 131 , to save costs.

In a further embodiment of the present utility model, a conduit 135 is provided at the bottom of the activated carbon 132, and the conduit 135 communicates with the water outlet hole 132a, and the conduit 135 is in sealing connection with the second water collecting pipe 131. For example, as shown in Figures 1 and 3, a through hole penetrating in the axial direction is formed on the conduit 135, which communicates with the water outlet hole 132a, and the conduit 135 can be sealingly connected with the lower end of the second water collecting pipe 131 to prevent The water between the second water collecting pipe 131 and the activated carbon directly flows out from the gap between the conduit 135 and the second water collecting pipe 131, which ensures that the water can only be filtered by the activated carbon 132 and then flow out from the above-mentioned through hole through the water outlet hole 132a for drinking by the user , thus effectively ensuring the taste of the water. Optionally, the cross-sectional size of the above-mentioned through hole is smaller than that of the water outlet hole 132a, so that the water purified by the activated carbon 132 can flow out of the through hole smoothly under the guidance of the conduit 135, ensuring the quality of the outlet water.

Wherein, as shown in FIG. 3 , the upper end of the conduit 135 can be formed with a downwardly recessed annular groove, and the lower end of the activated carbon 132 is suitable for fitting in the annular groove, which not only ensures the sealing between the activated carbon 132 and the conduit 135 It also makes the activated carbon 132 and the conduit 135 easy to assemble and improves the assembly efficiency. The lower surface of the mounting plate 134 is provided with an extension pipe 136 extending downwards to facilitate the connection with the water outlet pipeline. The lower end of the conduit 135 has an extension extending downwards. 132a is communicated, so that the pure water filtered through activated carbon 132 is exported. Seal connection between the extension part and the extension tube 136, for example, as shown in Figure 3, a sealing ring 101 is provided between the outer peripheral wall of the extension part and the inner peripheral wall of the extension tube 136 to seal the gap between the extension part and the extension tube 136 gap.

Further, a skeleton 113 may be provided between the outer wall of the fine filter element 120 and the inner wall of the pretreatment filter element 110, and a plurality of through holes are formed on the skeleton 113, so that the water filtered by the pretreatment filter element 110 can pass through A plurality of perforations flow to the fine filter element 120, thereby facilitating the installation of the pretreatment filter element 110, and can realize the pressurized filtration of the composite filter element 100, that is, the pressurized tap water flows into the composite filter element 100 radially from outside to inside, and the skeleton 113 can withstand a certain pressure, thereby ensuring the stability of the composite filter element 100 in the process of filtering tap water.

Optionally, a sealing cup 103 may be provided between the lower end of the fine filter element 120 and the inner wall of the pretreatment filter element 110, thereby ensuring the sealing performance of the composite filter element 100 and effectively reducing the residual amount of water in the composite filter element 100 , so as to ensure the quality of effluent water and better meet the needs of users.

The composite filter element assembly for water purifier according to the second aspect embodiment of the utility model includes a filter bottle (not shown in the figure), a filter cover (not shown in the figure) and the filter element according to the above-mentioned first aspect embodiment of the utility model Composite filter element 100.

The top of the filter bottle is open, and the filter cap is arranged on the top of the filter bottle to open or close the top opening of the filter bottle. An accommodating space is defined between the filter cap and the filter bottle, and the composite filter element 100 is detachably arranged in the accommodating space. The outer peripheral wall of the upper end of the filter element 100 is in sealing connection with the inner peripheral wall of the filter bottle, and the lower end of the pretreatment filter element 110 of the composite filter element 100 is in sealing connection with the inner wall of the filter bottle. For example, as shown in Figure 1, the upper end of composite filter element 100 is sheathed with handle 102, so that take out composite filter element 100 in filter bottle, can be provided with sealing ring 101 on the peripheral wall of handle 102, to seal the top of composite filter element 100 The gap between the filter bottle and the upper inner wall of the filter bottle prevents water from overflowing from the gap between the filter bottle and the composite filter element 100 . At the same time, the bottom surface of the pretreatment filter element 110 and the bottom wall of the filter bottle can also be sealed and connected by the sealing ring 101, so as to separate the waste water from the tap water before filtering, and ensure the airtightness between the composite filter element 100 and the filter bottle , so as to ensure the water purification effect.

Optionally, the outer peripheral wall of the handle 102 and the lower end of the pretreatment filter element 110 may both be formed with a receiving groove 101 a for accommodating the sealing ring 101 , so as to position the sealing ring 101 .

According to the composite filter element assembly used in the water purifier according to the embodiment of the utility model, by adopting the above-mentioned composite filter element 100, the volume of the composite filter element assembly can be reduced, and the service life of the filter materials at all levels is consistent, which reduces the cost and is convenient for users to replace The composite filter element 100 can at the same time ensure the quality of the effluent water, adjust the taste of the effluent water, and realize a large flow of water effluent.

The water purifier according to the embodiment of the third aspect of the utility model includes the composite filter element assembly for the water purifier according to the embodiment of the second aspect of the utility model.

According to the water purifier of the embodiment of the utility model, by adopting the above-mentioned composite filter element assembly, the pipeline connection of the water purification system in the water purifier is simple, and the joint and the PE pipe (that is, polyethylene plastic) that originally connected the composite filter element 100 have been canceled. pipe), which reduces the risk of water leakage, and the external dimension is small, which is conducive to miniaturization design, convenient transportation and saving the user's kitchen space. Greatly facilitate the user.

Other configurations and operations of the water purifier according to the embodiment of the present utility model are known to those skilled in the art and will not be described in detail here.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiment of the present utility model has been shown and described, those of ordinary skill in the art can understand that: without departing from the principle and purpose of the present utility model, various changes, modifications, substitutions and modifications can be made to the embodiment , the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A composite filter element, characterized in that it comprises a pretreatment filter element, a fine filter element and an activated carbon filter element arranged in sequence from outside to inside, and the fine filter element includes a first water collecting pipe and a fine filter membrane, and the first set A plurality of water collection holes are formed on the side wall of the water pipe. The fine filter membrane is sleeved on the outside of the first water collection pipe and covers the plurality of water collection holes. The upper part of the first water collection pipe is provided with Partition plate, the activated carbon filter element is arranged in the first water collection pipe, and the activated carbon filter element includes: The second water collection pipe, the second water collection pipe is arranged in the first water collection pipe, the upper end surface of the second water collection pipe and the lower surface of the partition are spaced apart from each other, and the second water collection pipe The outer peripheral wall except the lower end thereof is spaced apart from the inner peripheral wall of the first water collecting pipe, and the lower end of the second water collecting pipe is sealingly connected with the first water collecting pipe; Activated carbon, the activated carbon is arranged in the second water collection pipe, the outer peripheral wall of the activated carbon except the lower end thereof is spaced apart from the inner peripheral wall of the second water collection pipe, and the lower end of the activated carbon is separated from the second water collection pipe. The two water collecting pipes are sealed and connected, and the activated carbon is formed with a water outlet hole penetrating in the axial direction, and the upper end of the water outlet hole is closed. 2. The composite filter element according to claim 1, characterized in that, the upper end of the activated carbon is covered with a plugging member, and the plugging member blocks the upper end of the water outlet hole, and the outer periphery of the plugging member the walls are spaced apart from the inner peripheral wall of the second header; or The upper end of the activated carbon extends to the partition, and the partition blocks the upper end of the water outlet hole. 3. The composite filter element according to claim 1 or 2, characterized in that, the lower end of the second water collecting pipe has an outwardly extending mounting plate, and the mounting plate and the inner peripheral wall of the pretreatment filter element are mutually spaced apart to define a water outlet, wherein the fine filter element is located above the mounting plate. 4. The composite filter element according to claim 3, characterized in that at least one guide groove communicating with the water outlet is formed on the upper surface of the installation plate. 5. The composite filter element according to claim 4, characterized in that there are multiple guide grooves, A plurality of the guide grooves are straight grooves arranged parallel to each other at intervals, and both ends of each of the guide grooves pass through the peripheral wall of the mounting plate; or A plurality of the guide grooves are arranged at intervals along the circumference of the installation plate, each of the guide grooves extends along the radial direction of the installation plate and penetrates the outer peripheral wall of the installation plate. 6. The composite filter element according to claim 1, characterized in that, the lower ends of the first water collection pipe and the second water collection pipe are connected by a threaded structure, and at least one sealing ring is provided above the threaded structure , the sealing ring is located between the inner peripheral wall of the first water collecting pipe and the outer peripheral wall of the second water collecting pipe. 7. The composite filter element according to claim 6, characterized in that, at least one of the inner peripheral wall of the first water collecting pipe and the outer peripheral wall of the second water collecting pipe is formed with a housing for accommodating the sealing ring groove. 8 . The composite filter element according to claim 1 , wherein a conduit is provided at the bottom of the activated carbon, the conduit communicates with the outlet hole, and the conduit is tightly connected to the second water collecting pipe. 9. A composite filter element assembly, characterized in that, comprising: a filter bottle, the top of which is open; a filter cap, the filter cap is arranged on the top of the filter bottle, and an accommodating space is defined between the filter cap and the filter bottle; According to the composite filter element according to any one of claims 1-8, the composite filter element is detachably arranged in the accommodating space, and the upper end peripheral wall of the composite filter element is sealed with the inner peripheral wall of the filter bottle. connected, and the lower end of the pretreatment filter element of the composite filter element is tightly connected to the inner wall of the filter bottle. 10. A water purifier, characterized in that it comprises the composite filter element assembly according to claim 9.