CN216170341U - Filtering device - Google Patents

Abstract

The utility model discloses a filtering device, comprising: the body is provided with a water passing path for communicating the water inlet end and the water outlet end of the body, and a liquid storage cavity for storing liquid; the liquid storage cavity is communicated with the water passing channel through a liquid outlet hole; the aperture of the liquid outlet hole is configured to be suitable for forming negative pressure when water flows through the liquid outlet hole and is far away from the hole end of the liquid storage cavity; a filter assembly mounted to the body and configured to filter water as it passes through the waterway. This filtration utilizes the negative pressure effect that rivers produced when crossing water for the liquid in the stock solution chamber can be sneaked into and cross rivers, thereby makes this filter equipment's play water mix the liquid in the stock solution chamber, and the user need not manually paint corresponding nursing liquid again.

Description

Filtering device

Technical Field

The utility model relates to the technical field of filtering devices, in particular to a filtering device.

Background

The external filter device is generally connected to the water inlet end of the existing water outlet device, and the water quality entering the water outlet device is improved by utilizing the filtering effect of the filter device. Meanwhile, with the improvement of living standard, most users often apply the washing and caring products after washing hands and bathing to achieve certain moisturizing or whitening effects, but the manual application process of the users is inconvenient.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above-mentioned drawbacks and problems of the prior art, and provides a filter device, in which a liquid storage cavity is disposed, and a negative pressure effect generated by water flow when the filter device is used for filtering water is utilized to mix liquid in the liquid storage cavity into water flow, so that the water flowing out of the filter device is mixed with the liquid in the liquid storage cavity, and a user does not need to manually apply a corresponding care solution.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a filtration device comprising: the body is provided with a water passing path for communicating the water inlet end and the water outlet end of the body, and a liquid storage cavity for storing liquid; the liquid storage cavity is communicated with the water passing channel through a liquid outlet hole; the aperture of the liquid outlet hole is configured to be suitable for forming negative pressure when water flows through the liquid outlet hole and is far away from the hole end of the liquid storage cavity; a filter assembly mounted to the body and configured to filter water as it passes through the waterway.

Further, the body comprises a base, a filter cartridge, a liquid cylinder and a water passing seat; the base is provided with the water inlet end and the water outlet end; the filter cartridge is fixedly connected in the base and is used for installing the filter assembly, the liquid cylinder and the water passing seat; the liquid cylinder is matched with the water passing base to form the liquid storage cavity, and the liquid outlet hole is formed in the water passing base; the base, the filter cartridge and the water passing seat are matched to form the water passing path.

Furthermore, the filter cylinder comprises a filter cylinder seat and a filter cylinder cover which are fixedly connected into a whole; the filter assembly, the liquid cylinder and the water passing seat are arranged between the filter cylinder seat and the filter cylinder cover and limited by the filter cylinder seat and the filter cylinder cover.

Further, the filtering component comprises a first filter screen, a second filter screen, a third filter screen and a filtering core material; the first filter screen is arranged around the filter cylinder seat, and two ends of the first filter screen are respectively abutted against the filter cylinder seat and the filter cylinder cover; the second filter screen is positioned in the filter cylinder, one end of the second filter screen abuts against the water passing base, and the third filter screen is positioned in the filter cylinder, and one end of the third filter screen abuts against the filter cylinder cover; the filter core material is positioned between the second filter screen and the third filter screen and clamped by the second filter screen and the third filter screen; one end of the liquid cylinder, which is far away from the water passing seat, is abutted against the filter cylinder seat.

Further, the filter cartridge seat is provided with a first water through hole; the water passing seat is provided with a water passing channel close to the liquid outlet hole; the filter cylinder cover is provided with a second water through hole; a water passing gap is formed between the filter cartridge and the base in a matched manner; the water passing gap, the first water passing hole, the water passing channel and the second water passing hole are used for being matched to form the water passing channel; the first filter screen is positioned between the first water passing hole and the water passing gap; the second filter screen, the filter core material and the third filter screen are positioned between the water passing channel and the second water passing hole.

Further, the water passing seat is provided with a first substrate and a second substrate which are connected with each other; the first substrate is buckled with the liquid cylinder and matched with the liquid cylinder to form the liquid storage cavity, and the liquid outlet hole is formed in the liquid storage cavity; the second base plate is used for abutting against the second filter screen and is provided with a third water through hole; the water passing space between the first substrate and the second substrate is matched with the third water passing hole to form the water passing channel.

Further, the first filter screen is a cylindrical filter screen; the second filter screen and the third filter screen are flat filter screens.

Further, the filtering pore diameters of the first filter screen, the second filter screen and the third filter screen are reduced in sequence.

Further, the device also comprises a plugging component; the plugging component comprises a plugging piece and an elastic piece; the base is provided with a water passing port on the water passing pipeline; the blocking piece is arranged on the body in a sliding mode and is suitable for being switched between a first position and a second position to block or be far away from the water passing port; the cartridge is configured and adapted to abut the closure when installed in the base to move the closure from a first position to a second position; the two ends of the elastic piece respectively act on the body and the blocking piece so as to push the blocking piece to move from the second position to the first position when the filter cylinder is separated from abutting with the blocking piece.

Furthermore, the filter cylinder is rotationally clamped on the base, and one end of the filter cylinder, facing the plugging component, is provided with an abutting inclined plane; the abutment ramp is configured and adapted to urge the closure from a first position to a second position during rotation of the filter cartridge relative to the base into snapping engagement with the base.

As can be seen from the above description of the present invention, the present invention has the following advantages over the prior art:

1. set up the stock solution chamber in filter equipment's body, can look at user's demand in the stock solution chamber and store liquid such as nursing liquid, set up out the liquid hole simultaneously on the body, utilize during rivers go out the liquid suction of negative pressure that forms when liquid hole with the stock solution chamber and mix into among the rivers, thereby make this filter equipment's play water itself have rather than the corresponding effect of the liquid of storing in promptly, utilize filter assembly to filter the water of crossing simultaneously, still can improve the quality of water of going out, the department sets up this filter equipment at the water inlet of play water installation, can be when carrying out filterable to water, make play water have corresponding nursing effect, the user can avoid paining liquid such as nursing liquid, user's use travelling comfort and convenience improve.

2. The body includes the base, strains a section of thick bamboo, a liquid section of thick bamboo and crosses water seat, and the components of a whole that can function independently design is convenient for the assembly of body, and wherein a liquid section of thick bamboo can form the stock solution chamber with crossing water seat cooperation, crosses water seat and is convenient for set up out the liquid hole on it, strains a section of thick bamboo and is used for supplying a liquid section of thick bamboo, crosses water seat and filter assembly and installs.

3. The filter cartridge comprises a filter cartridge seat and a filter cartridge cover, and the filter assembly, the liquid cartridge and the water passing seat are convenient to assemble and fix through split design.

4. The filter assembly comprises a first filter screen, a second filter screen and a third filter screen, the filter effect of the filter device can be effectively guaranteed through three-layer filtering, and the filter core material can be optionally arranged, for example, the filter core material used for adsorbing metal ions in water can be arranged, so that the concentration of the metal ions in the water is effectively reduced.

5. The water passing gap is used for sending water flow at the water inlet end into the water passing channel, the first water passing hole is used for sending the water flow filtered by the first filter screen into the filter cylinder, the water passing channel is used for forming negative pressure at the liquid outlet, and the second water passing hole is used for sending the water flow filtered by the water passing hole to the water outlet end of the base.

6. The water passing base comprises a first substrate and a second substrate, the first substrate can be matched with the liquid cylinder to form a liquid storage cavity, and the second substrate is convenient for abutting and fixing the second filter screen.

7. The first cylindrical filter screen is convenient for the cover to be established outside straining a section of thick bamboo seat, and second filter screen and third filter screen can be convenient for install in straining a section of thick bamboo for flat filter screen.

8. The filtering pore diameter of the filter screen is gradually reduced, so that the filtering device has a gradient filtering level, thereby effectively improving the filtering effect and prolonging the service life of the filter screen.

9. The water inlet is opened by the plugging component when the filter cartridge is installed, so that water flows into the water channel, the water inlet is plugged by the plugging component when the filter cartridge is detached, the water flows can not flow into the filter cartridge from the water inlet end, the water inlet of the base is not required to be closed when the filter cartridge is detached, and the filter cartridge is detached more conveniently.

10. The assembly of straining a section of thick bamboo and base forms the joint through rotating and then can reciprocal anchorage, wherein strain and be equipped with the butt inclined plane on the section of thick bamboo, when straining a section of thick bamboo and insert the base and begin to rotate, the butt inclined plane can promote the shutoff piece by first position to the second position and make into water and open, this butt inclined plane just with the shutoff piece butt after straining a section of thick bamboo and beginning to rotate simultaneously, can avoid straining a section of thick bamboo and insert the in-process of base and push up the shutoff piece and cause strain a section of thick bamboo and not pegged graft the condition emergence that the water inlet that targets in place just is opened and lead to leaking.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an exploded view of an embodiment of a filter assembly according to the present invention;

FIG. 2 is a schematic view of the filter cartridge holder of FIG. 1;

FIG. 3 is a schematic view of the filter cartridge cover of FIG. 1;

FIG. 4 is a schematic structural view of the base of FIG. 1;

FIG. 5 is a sectional view of the structure of the liquid cylinder and the water passing seat in FIG. 1;

FIG. 6 is a cross-sectional view of an assembled embodiment of a filter assembly of the present invention, shown generally at 1;

FIG. 7 is an enlarged view of the structure of portion A of FIG. 6;

FIG. 8 is a cross-sectional view of an assembled embodiment of a filter assembly of the present invention, shown generally at 2;

fig. 9 is an enlarged view of a portion B of fig. 8.

Description of the main reference numerals:

a base 10; a clamping protrusion 101; a guide boss 102; a guide slope 1021; a water passing opening 103; straight line segment 104; a ramp section 105; a water inlet pipe 11; a water outlet pipe 12; a filter cartridge holder 21; clamping ribs 211; a first slope 2111; a second slope 2112; a rib 212; a first water passing hole 213; a snap groove 214; a positioning groove 215; a filter cartridge cover 22; an abutment ramp 221; a joint 222; positioning ribs 223; a clamping boss 224; a second water passing hole 225; an abutment mesa 226; an elastic rubber ring 23; a liquid cartridge 30; a liquid outlet hole 31; a liquid storage chamber 32; a water passing seat 40; a first substrate 401; a second substrate 402; a third water passing hole 41; a water passing tank 42; a first sieve 51; a second screen 52; a third sieve 53; a filter core material 54; a blocking piece 61; an elastic member 62; an end cap 63; a fixed rubber ring 64; the plugging rubber ring 65.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are presently preferred embodiments of the utility model and are not to be taken as an exclusion of other embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, the terms "first", "second" or "third", etc. are used for distinguishing between different items and not for describing a particular sequence.

In the claims, the specification and the drawings of the present invention, unless otherwise expressly limited, all directional or positional relationships indicated by the terms "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," "counterclockwise," and the like are based on the directional or positional relationships indicated in the drawings and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so indicated must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" or "fixedly connected" should be interpreted broadly, that is, any connection between the two that does not have a relative rotational or translational relationship, that is, non-detachably fixed, integrally connected, and fixedly connected by other devices or elements.

In the claims, the specification and the drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1, fig. 1 shows an exploded view of a structure of an embodiment of a filter device provided by the present invention, which mainly includes a body, a filter assembly and a plugging assembly.

Wherein, the body is equipped with the water route of crossing that is used for communicateing its intake end and play water end to be equipped with the stock solution chamber 32 that is used for storing liquid, through going out liquid hole 31 intercommunication between stock solution chamber 32 and the water route, the aperture of going out liquid hole 31 is configured to be suitable for and forms the negative pressure when making rivers keep away from outside the hole end of stock solution chamber 32 through going out liquid hole 31.

Specifically, the body comprises a base 10, a filter cartridge, a liquid cartridge 30 and a water passing seat 40, wherein the filter cartridge comprises a filter cartridge seat 21, a filter cartridge cover 22 and an elastic rubber ring 23.

Referring to fig. 4, the base 10 can be regarded as a substantially closed-end cylindrical member, on which a water inlet pipe 11 is mounted by screwing, the above-mentioned plugging assembly is mounted between the water inlet pipe 11 and the base 10, and the water inlet pipe 11 forms the water inlet end of the body, and referring to fig. 6, the base 10 is provided with a water passing opening 103 at a position connected with the water inlet pipe 11. The base 10 is further provided with a water outlet pipe 12, and the water outlet pipe 12 forms a water outlet end of the body. In addition, the base 10 is provided at the bottom thereof with a water outlet for communicating with the water outlet pipe 12.

The inner wall of the opening of the base 10 is circumferentially provided with a clamping protrusion 101, a guiding boss 102 is arranged at a position close to the clamping protrusion 101, a guiding inclined plane 1021 is arranged in the direction of the guiding boss 102 towards the opening of the base 10, and the guiding inclined plane 1021 can be regarded as being upwards inclined towards the opening of the base 10 along the counterclockwise direction. In addition, referring to fig. 7 and 9, a straight line segment 104 and a slope segment 105 are further formed on the inner wall of the opening of the susceptor 10 in sequence from inside to outside, the diameter of the straight line segment 104, i.e., the inner wall of the susceptor 10, in this region is kept uniform, and the diameter of the slope segment 105, i.e., the inner wall of the susceptor 10, in this region is smoothly and gradually increased.

The filter cartridge comprises a cartridge base 21, a cartridge cover 22 and an elastic rubber ring 23.

Referring to FIG. 2, the cartridge holder 21 can be generally regarded as a bottomed cylindrical member that can be inserted into the base 10 with its bottom facing outward and is in rotational snap fit with the base 10. It is specific, strain barrel holder 21 and be equipped with joint rib 211 in the lateral wall department that is close to its diapire position, joint rib 211 can cooperate with the protruding 101 of joint on the base 10 inner wall, after strain barrel holder 21 inserts among the base 10, clockwise rotation strains barrel holder 21, can be so that joint rib 211 and the protruding 101 realization joint cooperation of joint to prevent to strain barrel holder 21 and deviate from among base 10. Specifically, a first inclined surface 2111 is provided on the clamping rib 211, the first inclined surface 2111 faces clockwise direction of rotation of the filter cartridge holder 21 and is used for abutting and matching with the clamping protrusion 101 when the filter cartridge holder 21 rotates clockwise, so that the clamping protrusion 101 can enter into a slot formed by the clamping rib 211, meanwhile, a second inclined surface 2112 is provided on the clamping rib 211, and the second inclined surface 2112 can abut and match with a guiding inclined surface 1021 on the guiding boss 102 in the process that the filter cartridge holder 21 rotates counterclockwise and is separated from the clamping and matching with the base 10, so that the filter cartridge holder 21 can slightly extend out from the inside of the base 10.

Meanwhile, referring to fig. 7 and 9, the elastic rubber ring 23 is sleeved on the filter cartridge holder 21, the elastic rubber ring 23 abuts against the linear section 104 on the inner wall of the base 10 when the filter cartridge holder 21 and the base 10 are in clamping fit, at this time, the force applied to the elastic rubber ring 23 is balanced in the direction perpendicular to the inner wall of the base 10, and then when the filter cartridge holder 21 is separated from the clamping fit with the base 10 and slightly extends outward, the elastic rubber ring 23 moves to the inclined section 105, and at this time, the inclined section 105 applies a component force to the elastic rubber ring 23, so that the filter cartridge holder 21 continues to extend outward from the base 10, and thus the filter cartridge holder 21 can automatically pop up from the base 10, and the filter cartridge holder 21 is very convenient to disassemble.

Referring to fig. 2, a plurality of ribs 212 are further disposed on the outer wall of the filter cartridge holder 21, a plurality of first water through holes 213 are disposed on the sidewall of the filter cartridge holder 21, and a locking groove 214 and a positioning groove 215 are further disposed on the sidewall of the filter cartridge holder near the opening.

Referring to fig. 3, the filter cartridge cover 22 is used to fixedly connect with the filter cartridge base 21 to cover the opening of the filter cartridge base 21, and is provided with a clamping boss 224 for cooperating with the clamping groove 214 and a positioning rib 223 for cooperating with the positioning groove 215, when the filter cartridge cover 22 is installed, the positioning groove 215 is in inserting fit with the positioning rib 223, and the clamping boss 224 is clamped into the clamping groove 214. The end face of the filter cartridge cover 22 departing from the filter cartridge seat 21 is provided with a connector 222, a second water through hole 225 is arranged in the connector 222, an abutting table surface 226 is arranged on the outer side of the connector 222 along the circumferential direction, the connector 222 can be in inserting fit with a water outlet on the base 10 when the filter cartridge is installed in the base 10, the second water through hole 225 is communicated with the water outlet end of the body, and the abutting table surface 226 can abut against a flange which is used for forming the water outlet and arranged on the bottom wall of the base 10. Meanwhile, an abutting inclined surface 221 is further arranged on the end surface of the filter cartridge cover 22, which faces away from the filter cartridge seat 21, and the abutting inclined surface 221 is inclined outwards along the counterclockwise direction of the rotation of the filter cartridge and is used for pushing the plugging assembly to gradually open the water passing opening 103 on the base 10 in the rotation process of the filter cartridge.

Referring to fig. 5, the liquid cylinder 30 is installed in the filter cartridge, the water passing base 40 is fastened at the opening of the liquid cylinder 30 and cooperates with the liquid cylinder 30 to form a liquid storage chamber 32, and the liquid storage chamber 32 can store liquid such as nursing liquid.

The water passing base 40 comprises a first substrate 401 and a second substrate 402, which are connected with each other at opposite surfaces and form a water passing groove 42 therebetween, wherein the first substrate 401 is used for fastening the opening of the liquid cylinder 30, and is further provided with a liquid outlet hole 31, and the diameter of the liquid outlet hole 31 is small, so that a negative pressure is formed outside the liquid outlet hole 31 when a water flow with a fast flow speed passes through the hole end far away from the liquid storage cavity 32, so as to suck out the liquid in the liquid storage cavity 32 and mix the liquid into the water flow. The second base plate 402 is provided with a third water through hole 41, and the water through groove 42 and the third water through hole 41 are matched to form a water through channel of the water through seat 40. Further, it should be noted that when the water passing seat 40 and the liquid cartridge 30 are installed into the filter cartridge, the water passing groove 42 is positioned to correspond to the first water passing hole 213 of the filter cartridge seat 21 so as to facilitate the flow of water therethrough.

The filter assembly comprises a first filter screen 51, a second filter screen 52, a third filter screen 53 and a filter core material 54, and the filter assembly, the liquid cylinder 30 and the water passing base 40 are all arranged between the filter cylinder base 21 and the filter cylinder cover 22 and limited by the filter cylinder base 21 and the filter cylinder cover 22. The first filter screen 51 is disposed around the filter cartridge seat 21, and two ends of the first filter screen are respectively abutted to the filter cartridge seat 21 and the filter cartridge cover 22, the second filter screen 52 is disposed in the filter cartridge, and one end of the second filter screen is abutted to the water passing seat 40, the third filter screen 53 is disposed in the filter cartridge, and one end of the third filter screen is abutted to the filter cartridge cover 22, the filter core material 54 is disposed between the second filter screen 52 and the third filter screen 53 and clamped by the two, and one end of the liquid cartridge 30 away from the water passing seat 40 is abutted to the filter cartridge seat 21.

Specifically, the first filter screen 51 is a cylindrical filter screen, which can be sleeved outside the filter cartridge base 21 to form a filtering structure around the filter cartridge base 21, and meanwhile, when the first filter screen 51 is sleeved outside the filter cartridge base 21, a water passing space can be formed between the first filter screen 51 and the outer wall of the filter cartridge base 21 through the convex rib 212 arranged on the outer wall of the filter cartridge base 21, so that water passing is smooth.

The second filter screen 52 and the third filter screen 53 are flat filter screens, wherein the second filter screen 52 abuts against the second substrate 402 of the water passing seat 40, the third filter screen 53 abuts against the end face of the filter cylinder cover 22 facing the inner cavity of the filter cylinder, a filter core material 54 is arranged between the first filter screen and the third filter screen, and the filter core material 54 can be assembled according to actual conditions, for example, a filter material capable of adsorbing heavy metal ions can be selected, and the heavy metal ions in the water passing are adsorbed to improve the water quality.

When the filter cartridge is assembled, the water passing base 40 is buckled on the liquid cartridge 30, the liquid cartridge 30 is installed in the filter cartridge base 21, the second filter screen 52, the filter core material 54 and the third filter screen 53 are sequentially placed, the first filter screen 51 is sleeved outside the filter cartridge base 21, and the filter cartridge cover 22 is buckled, so that the liquid cartridge 30, the water passing base 40 and the filter assembly are clamped and fixed.

When installing the filter cartridge, the filter cartridge is inserted into the base 10, and then the filter cartridge is rotated clockwise to be fastened and fixed to the base 10. When the filter cartridge is removed, the filter cartridge is rotated counterclockwise, so that the filter cartridge is separated from the base 10.

When the filter cartridge is mounted on the base 10, a water passing gap is formed between the filter cartridge and the inner wall of the base 10, the water passing gap, the first water passing hole 213, the water passing channel and the second water passing hole 225 form a water passing channel, one end of the water passing gap is communicated with the water inlet end, the second water passing hole 225 is communicated with the water outlet end, and when the water passes through the water passing channel, the water is also contacted with a filter component arranged on the water passing channel, so that the filter component can filter the water.

In addition, the filtering device further comprises a blocking assembly, the blocking assembly comprises a blocking piece 61, an elastic piece 62 and a blocking rubber ring 65, the body further comprises an end cover 63 and a fixed rubber ring 64, the blocking piece 61 is arranged on the body in a sliding mode and is configured to be switched between a first position and a second position to block or be far away from the water passing port 103, the filter cartridge is configured to abut against the blocking piece 61 when the filter cartridge is installed in the base 10 so that the blocking piece 61 moves from the first position to the second position, and two ends of the elastic piece 62 respectively act on the body and the blocking piece 61 to push the blocking piece 61 to move from the second position to the first position when the filter cartridge is disengaged from the blocking piece 61.

Referring to fig. 1, 7 and 9, the blocking member 61 is a piston-shaped rod, one end of which can pass through the water passing opening 103 and is sleeved with the blocking rubber ring 65, the end cover 63 and the fixing rubber ring 64 are clamped and fixed between the water inlet pipe 11 and the base 10 after the water inlet pipe 11 is mounted on the base 10, the blocking member 61 is inserted on the end cover 63 and can slide relative to the end cover 63, namely can slide relative to the body, and the elastic member 62 is mounted between the end cover 63 and the blocking member 61.

Referring to fig. 6 and 8, when the filter cartridge is inserted into the base 10 and the abutment table 226 abuts the bottom of the base 10, at this point, the cartridge has not yet rotated to engage the base 10, and the abutment ramp 221 has not yet abutted the end of the closure 61 that passes through the nozzle 103, so the nozzle 103 has not yet been opened, but at the moment, the filter cartridge is inserted in place, the elastic rubber ring 23 can ensure that water cannot leak in the base 10, then the filter cartridge is rotationally clamped to the clamping protrusion 101 on the base 10, simultaneously, the abutting inclined surface 221 starts to push the end part of the blocking piece 61, so that the blocking rubber ring 65 on the blocking piece 61 is switched from a state of blocking the water passing opening 103 to a state of being far away from the water passing opening 103, so that the filter device can be filled with water, and when the filter cartridge is disassembled, the plugging rubber ring 65 can be switched from a state of being away from the water passing opening 103 to a state of plugging the water passing opening 103, so that the filter device stops water filling. By the structure, the total water inlet of the filter device does not need to be closed when the filter cartridge is mounted and dismounted, so that the filter cartridge is more convenient to mount and dismount.

According to the filtering device provided by the utility model, the liquid storage cavity 32 is arranged in the body of the filtering device, liquid such as nursing liquid can be stored in the liquid storage cavity 32 according to the needs of users, the liquid outlet hole 31 is arranged on the body, the liquid in the liquid storage cavity 32 is sucked out and mixed into the water flow by using negative pressure formed when the water flow passes through the liquid outlet hole 31, so that the outlet water of the filtering device has the corresponding function with the liquid stored in the filtering device, meanwhile, the filtering component is used for filtering the outlet water, the water quality of the outlet water can be improved, the filtering device is arranged at the water inlet end of the outlet water device, the outlet water can have the corresponding nursing function while being filtered, the users can avoid smearing the liquid such as the nursing liquid, and the use comfort and the convenience of the users are improved.

The description of the above specification and examples is intended to be illustrative of the scope of the present invention and is not intended to be limiting. Modifications, equivalents and other improvements which may occur to those skilled in the art and which may be made to the embodiments of the utility model or portions thereof through a reasonable analysis, inference or limited experimentation, in light of the common general knowledge, the common general knowledge in the art and/or the prior art, are intended to be within the scope of the utility model.

Claims (10)

1. A filter apparatus, comprising:

the body is provided with a water passing path for communicating the water inlet end and the water outlet end of the body, and a liquid storage cavity for storing liquid; the liquid storage cavity is communicated with the water passing channel through a liquid outlet hole; the aperture of the liquid outlet hole is configured to be suitable for forming negative pressure when water flows through the liquid outlet hole and is far away from the hole end of the liquid storage cavity;

a filter assembly mounted to the body and configured to filter water as it passes through the waterway.

2. The filter apparatus of claim 1, wherein said body comprises a base, a filter cartridge, a fluid cartridge, and a water passing base; the base is provided with the water inlet end and the water outlet end; the filter cartridge is fixedly connected in the base and is used for installing the filter assembly, the liquid cylinder and the water passing seat; the liquid cylinder is matched with the water passing base to form the liquid storage cavity, and the liquid outlet hole is formed in the water passing base; the base, the filter cartridge and the water passing seat are matched to form the water passing path.

3. The filter apparatus of claim 2, wherein said filter cartridge comprises a cartridge base and a cartridge cover fixedly secured together; the filter assembly, the liquid cylinder and the water passing seat are arranged between the filter cylinder seat and the filter cylinder cover and limited by the filter cylinder seat and the filter cylinder cover.

4. A filter arrangement as claimed in claim 3 wherein the filter assembly comprises a first screen, a second screen, a third screen and a filter core; the first filter screen is arranged around the filter cylinder seat, and two ends of the first filter screen are respectively abutted against the filter cylinder seat and the filter cylinder cover; the second filter screen is positioned in the filter cylinder, one end of the second filter screen abuts against the water passing base, and the third filter screen is positioned in the filter cylinder, and one end of the third filter screen abuts against the filter cylinder cover; the filter core material is positioned between the second filter screen and the third filter screen and clamped by the second filter screen and the third filter screen; one end of the liquid cylinder, which is far away from the water passing seat, is abutted against the filter cylinder seat.

5. The filter device according to claim 4, wherein said cartridge holder is provided with a first water through hole; the water passing seat is provided with a water passing channel close to the liquid outlet hole; the filter cylinder cover is provided with a second water through hole; a water passing gap is formed between the filter cartridge and the base in a matched manner; the water passing gap, the first water passing hole, the water passing channel and the second water passing hole are used for being matched to form the water passing channel; the first filter screen is positioned between the first water passing hole and the water passing gap; the second filter screen, the filter core material and the third filter screen are positioned between the water passing channel and the second water passing hole.

6. The filter device as claimed in claim 5, wherein the water passing base is provided with a first base plate and a second base plate which are connected; the first substrate is buckled with the liquid cylinder and matched with the liquid cylinder to form the liquid storage cavity, and the liquid outlet hole is formed in the liquid storage cavity; the second base plate is used for abutting against the second filter screen and is provided with a third water through hole; the water passing space between the first substrate and the second substrate is matched with the third water passing hole to form the water passing channel.

7. A filter unit as claimed in claim 4, wherein the first screen is a cylindrical screen; the second filter screen and the third filter screen are flat filter screens.

8. The filter apparatus of claim 7, wherein the filter apertures of the first, second and third screens decrease sequentially.

9. A filter device as claimed in claim 2, further comprising a plug assembly; the plugging component comprises a plugging piece and an elastic piece; the base is provided with a water passing port on the water passing pipeline; the blocking piece is arranged on the body in a sliding mode and is suitable for being switched between a first position and a second position to block or be far away from the water passing port; the cartridge is configured and adapted to abut the closure when installed in the base to move the closure from a first position to a second position; the two ends of the elastic piece respectively act on the body and the blocking piece so as to push the blocking piece to move from the second position to the first position when the filter cylinder is separated from abutting with the blocking piece.

10. The filter apparatus of claim 9 wherein said filter cartridge is rotatably engaged to said base and has an abutment ramp at an end thereof facing said closure assembly; the abutment ramp is configured and adapted to urge the closure from a first position to a second position during rotation of the filter cartridge relative to the base into snapping engagement with the base.

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