CN211885680U

CN211885680U - Water purifying device

Info

Publication number: CN211885680U
Application number: CN201922045752.0U
Authority: CN
Inventors: 沈鑫; 白晓峰; 冯永刚
Original assignee: Guangdong Wapu Technology Co Ltd
Current assignee: Guangdong Lingshang Water Purification Technology Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-11-10
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a water purifying device, which comprises a shell, wherein an installation cavity for installing a filter element is arranged in the shell; one end of the mounting cavity is opened, and the other end of the mounting cavity is communicated with a waterway interface; a filter element is arranged in the mounting cavity, one end of the filter element is communicated to the waterway interface, and the other end of the filter element is close to the opening of the mounting cavity; in particular, the shell is internally provided with an ejection assembly which extends into the mounting cavity and comprises a contact part and an ejection part which are connected with each other, the contact part is abutted against one end of the filter element close to the opening and can move along the axial direction of the filter element relative to the mounting cavity; the filter cartridge presses against the contact member causing the contact member to press against the ejection member, which generates a force that disengages the filter cartridge from the mounting cavity. The utility model has the advantages of through being located the popping out subassembly of installation cavity, after the filter core was followed the installation cavity unblock, pop out the subassembly and can pop out the casing with the filter core along the installation cavity axial, the user takes out the filter core more convenient, simple laborsaving.

Description

Water purifying device

Technical Field

The utility model belongs to the technical field of water purification unit and specifically relates to a water purification unit is related to.

Background

Nowadays, water resource pollution is more and more serious, and the problem of urban water safety is particularly serious. Aiming at the problem of secondary pollution of tap water and harmful substances in the tap water caused by source water pollution, more and more families use water purifiers to filter purified water, so that the water purifiers become one of the visible household appliances in daily life. The water purifier purifies water through the filter core, but along with the extension of live time, the impurity of aquatic can block up the filter core, consequently needs regularly to unpick and wash or change the filter core to ensure that the water purifier normally works.

The current water purifier, inside filter core need artifical manual dismouting change, and the dismouting is troublesome, wastes time and energy, and the operating efficiency is low, has the potential safety hazard moreover, can cause the damage to the inner structure of water purifier, leads to the result of use variation of water purifier, influences the user and uses experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a purifier can let the user take out that the filter core is swift convenient, labour saving and time saving.

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

a water purifying device comprises a shell, wherein an installation cavity for installing a filter element is arranged in the shell; one end of the mounting cavity is opened, and the other end of the mounting cavity is communicated with a waterway interface; a filter element is arranged in the mounting cavity, one end of the filter element is communicated to the waterway interface, and the other end of the filter element is close to the opening of the mounting cavity; in particular, the shell is internally provided with an ejection assembly which extends into the mounting cavity and comprises a contact part and an ejection part which are connected with each other, the contact part is abutted against one end of the filter element close to the opening and can move along the axial direction of the filter element relative to the mounting cavity; the filter cartridge presses against the contact member causing the contact member to press against the ejection member, which generates a force that disengages the filter cartridge from the mounting cavity.

The filter element is arranged in the shell along the installation cavity, is fixed in the installation cavity and is wrapped by the installation cavity. At the moment, the pop-up assembly extending into the installation cavity is contacted with one end of the filter element close to the opening of the installation cavity. The filter cartridge presses against the contact member causing the contact member to press against the ejection member, which generates a force that disengages the filter cartridge from the mounting cavity. After the user unlocks the filter core that is located the installation cavity, the filter core immediately pops out the installation cavity along the installation cavity axial under the effort of popping out the part to the user takes out the filter core.

This purifier's filter core, its one end accessible that is close to the installation cavity open-ended sets up along the radial protruding in the protruding structure of filter core main part of filter core to contact member butt is on the filter core. The filter element body referred to herein is a cylinder to which a filter medium is attached.

Should be provided with the locking structure in the purifier, make the filter core pack into the installation intracavity back, lockable structure is locked in the installation intracavity, realizes the intercommunication in drainage water route. The locking structure can be arranged in the shell and comprises a locking component connected with the shell and a locking space for the filter element to penetrate; the locking assembly comprises a clamping component, an elastic component and a toggle component; the clamping component is provided with a locking end positioned in the circumferential direction of the locking space, the locking end can move relative to the locking space, and the locking end is provided with a pressing surface which can contact and press the circumferential side surface of the filter element; the elastic component is connected with the clamping component and enables the locking end to extend into the locking space; when the filter element penetrates into the locking space, the locking end extrudes the elastic part, and the elastic part generates a force towards the locking end to move towards the filter element positioned in the locking space; the toggle part is connected with the clamping part, and is connected with a control block which can enable the toggle part to rotate relative to the locking space, and the control block is arranged outside the shell; the toggle component can rotate relative to the locking space to enable the locking end to move relative to the locking space, so that the extrusion surface extrudes or breaks away from the circumferential side surface of the filter element.

The locking structure has two working positions, namely a locking position and an unlocking position. Before the filter element is not installed in the locking structure, the locking end of the clamping part moves towards the locking space under the action of the elastic part, so that the cross section area of the locking space is smaller than that of the filter element.

After the filter element is arranged in the locking structure, the circumferential side surface of the filter element extrudes the locking end through the extrusion surface, so that the locking end moves towards the outside of the locking space. And the elastic part always generates a force towards the locking end to move towards the filter element positioned in the locking space, so that the pressing surface of the locking end always presses the circumferential side surface of the filter element positioned in the locking space. At this moment, this locking structure is in the locking position, and the filter core is locked in the locking space by the locking structure.

When the user need take out the filter core, only need rotate the part of stirring, make the part of stirring lock space self-rotation relatively, make the extrusion face of locking end break away from filter core circumference side to make the locking end relieve the locking to the filter core, at this moment, this locking structure is in the unblock position, and the filter core is followed the unblock in the locking space, and the user can take out the filter core at any time.

The toggle part can realize self-rotation relative to the locking space through the control block, and the control block can be a knob piece driven by hand or a switch driven by automatic control, such as a handle rotating to drive the toggle part to rotate, a motor driving to drive the toggle part to rotate, and the like.

The locking space is preferably arranged between one end of the installation cavity communicated with the waterway interface and one end of the installation cavity provided with the opening along the axial direction of the installation cavity. In order to guarantee that the locking structure can not influence the filter core along installation cavity axial motion, the quantity of locking end is two at least, and each locking end is connected with elastomeric element respectively, and two locking ends are for locking space symmetrical arrangement to guarantee to penetrate the filter core in the locking space and can steadily lock in the locking space, avoid the filter core because of the locking of locking structure position offset appears, the inner wall of extrusion installation cavity. The axial direction of the filter element is defined as the axial direction of the filter element penetrating into the locking space. The elastic component can be a spring, and the elastic expansion direction of the spring is arranged along the radial direction of the filter element.

In one example, the clamping member includes at least two locking bars, the locking ends being formed at ends of the locking bars; the two locking ends are symmetrically arranged relative to the locking space, the two locking strips are mutually rotationally connected, and the axial line of the mutual rotation of the locking strips is parallel to the axial direction of the filter element positioned in the locking space; the elastic component is connected with the locking ends, and the two locking ends synchronously extend into the locking space. Through the synchronous movement of the two locking ends, the two locking ends which are symmetrically arranged relative to the locking space can synchronously extend into the locking space. When the filter element penetrates into the locking space, the two locking ends symmetrically arranged relative to the locking space can simultaneously extrude the circumferential side surfaces of the filter element, so that the two sides of the filter element are balanced in stress and stably locked in the locking space.

In order to facilitate the poking part to drive the locking end to be separated from the circumferential side surface of the filter element, the clamping part can also comprise a poking end which is connected with the locking end and moves reversely and synchronously with the locking end; the stirring end is connected with the stirring part, and the stirring part can make the stirring end move relative to the locking space by self-rotation so as to make the extrusion surface separate from the circumferential side surface of the filter element. Specifically, the locking end is formed at one end of the locking strip, the poking end is formed at the other end of the locking strip, and the locking end and the poking end are respectively positioned at two sides of an axis of the locking strip, which is rotated mutually; the toggle part is arranged between the two toggle ends; the toggle part comprises at least two toggle blocks and a rotating part capable of rotating relative to the locking space, the control block is connected with the rotating part, the two toggle blocks are symmetrically arranged relative to the rotating part and are connected with the rotating part, and the rotating part can rotate relative to the locking space to enable the toggle blocks to extend out towards the toggle end.

In order to facilitate the resetting of the rotating part after the filter element is unlocked and locked in the space and simplify the unlocking operation of a user, in one example, the water purifying device also comprises a mounting plate part, wherein a resetting groove is arranged in the mounting plate part, and a resetting elastic part capable of moving along the axial direction of the resetting groove is arranged in the resetting groove; the rotating part is provided with a reset block extending into the reset groove, the reset block is connected with the reset elastic component and extrudes the reset elastic component, and the reset elastic component generates force for the reset block to enable the rotating part to move to the reset position. The reset position refers to the position of the rotating part when the shifting block can be pressed on the limiting part.

In order to prevent the locking end from excessively extending into the locking space or being separated from the locking space too far, which affects the application of the locking structure, the stroke of the locking end moving relative to the locking space is provided with a first stroke position and a second stroke position so as to correspond to the limit position of the locking end extending into the locking space and the limit position of the locking end moving out of the locking space. In one example, the rotating member includes at least two cam portions arranged symmetrically with respect to an axis about which the rotating member rotates by itself and at least two stopper portions arranged symmetrically with respect to the axis about which the rotating member rotates by itself, the cam portions and the stopper portions being arranged at intervals in a circumferential direction of the rotating member; when the locking end is positioned at the first stroke position, the clamping part generates a force towards the shifting block to move towards the rotating part, so that the shifting block is pressed on the limiting part; when the locking end is at the second stroke position, the cam part generates a force to the shifting block to move towards the clamping part, so that the shifting block is pressed on the clamping part.

The utility model discloses following beneficial effect has:

1. according to the water purifying device, the pop-up assembly positioned in the installation cavity can pop the filter element out of the shell along the axial direction of the installation cavity after the filter element is unlocked from the installation cavity, so that a user can take out the filter element more conveniently, simply and laborsavingly;

2. the filter element can be installed quickly. Through the design of the locking assembly, the position of the filter element can be locked by directly penetrating the filter element into the locking space;

3. the filter core can realize quick unblock. Through the design of the shifting part, a user can conveniently replace the filter element, so that the use experience of the user is improved;

4. the shifting part has a reset design, so that a user can replace the filter element without excessive operation, the operation is simple and convenient, and the use experience of the user is improved.

Drawings

FIG. 1 is a schematic view of a filter cartridge and ejection assembly according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic view of a locking assembly in an embodiment of the invention;

FIG. 4 is a schematic view of a rotating member according to an embodiment of the present invention;

FIG. 5 is a schematic view of a dial block in an embodiment of the present invention;

FIG. 6 is a schematic view of a mounting plate assembly in an embodiment of the invention;

fig. 7 is a schematic view of the filter element, the locking assembly and the pop-up assembly according to the embodiment of the present invention.

Description of reference numerals: 1-a shell; 2-mounting a cavity; 3-a step portion; 4-boss; 5-a contact member; 6-an ejection member; 7-locking the space; 8-an elastic member; 9-locking strips; 10-a locking end; 11-extrusion face; 12-a toggle end; 13-a toggle block; 14-a rotational member; 15-a chute; 16-a cam portion; 17-a limiting part; 18-a transmission rod; 19-a knob; 20-a mounting plate component; 21-a reset groove; 22-a return elastic member; 23-a reset block; 24-a limit groove; 25-a limiting block; 26-a pilot hole; 27-a filter element; 28-stroke hole; 29-a bump; 30-stroke block.

Detailed Description

In order to explain the overall concept of the present application more clearly, the present invention is further explained below with reference to the drawings and examples.

In the description of the present application, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

As shown in the figures, the water purifying device of the present embodiment includes a housing 1, and a mounting cavity 2 for mounting the filter element is provided in the housing 1, and the mounting cavity 2 may be arranged horizontally or vertically. The two ends of the installation cavity 2 are opened, wherein one end of the opening faces and is communicated to the outside of the shell 1, and the other end of the opening is provided with a waterway interface arranged on the waterway board or the filter base to stretch into, so that the installation cavity 2 is communicated with the waterway interface. Be provided with filter core 27 in the installation cavity 2, this filter core 27 stretches into in the installation cavity 2 along the installation cavity 2 axial, and filter core 27's one end and water route interface intercommunication form the drainage water route, and filter core 27's the other end is close to the opening outside the casing 1 of installation cavity 2. In this embodiment, the opening of the installation cavity 2 facing the outside of the housing 1 is provided with a step portion 3, one end of the filter element 27 close to the opening of the installation cavity 2 facing the outside of the housing 1 is provided with a boss 4 protruding from the main body of the filter element 27 along the radial direction of the filter element 27, and the boss 4 abuts against the step portion 3.

The housing 1 is also provided with a stroke hole 28 communicated with the mounting cavity 2, the stroke hole 28 is arranged along the axial direction of the filter element 27, and the opening of the stroke hole 28 communicated with the mounting cavity 2 is provided with a lug 29 extending towards the inside of the stroke hole 28. An ejection assembly is disposed within the travel aperture 28. The ejection assembly comprises a contact part 5 and an ejection part 6 which are connected with each other, the contact part 5 extends into the installation cavity 2 through an opening of a stroke hole 28 and abuts against one end, close to the opening, of the filter element 27, and a stroke block 30 which is matched with a projection 29 to limit the motion stroke of the contact part 5 is arranged on the contact part 5. In this embodiment, the contact member 5 is a sleeve member, the sleeve member is provided with a guide hole 26 arranged along the axial direction of the filter element 27, and the top of the sleeve member is connected with the boss 4 of the filter element 27; the ejection member 6 is a spring, and the ejection member 6 is mounted in the guide hole 26 so that the contact member 5 can move axially along the filter cartridge 27 relative to the mounting chamber 2. When the filter cartridge 27 is mounted in the mounting chamber 2, the contact member 5 presses the ejecting member 6, and the ejecting member 6 generates a force for detaching the filter cartridge 27 from the mounting chamber 2. The number of ejection assemblies is preferably a plurality and is arranged uniformly and symmetrically around the cartridge 27 to ensure smooth removal of the cartridge 27.

After the filter element 27 is installed in the housing 1 along the installation cavity 2, the filter element 27 is fixed in the installation cavity 2 and is wrapped by the installation cavity 2. At this time, the contact member 5 located in the mounting cavity 2 is in contact with the boss 4. The projection 4 presses the contact member 5, causing the contact member 5 to press the ejection member 6, and the ejection member 6 generates a force to disengage the filter cartridge 27 from the mounting chamber 2. After the user unlocks the filter cartridge 27 located in the installation cavity 2, the filter cartridge 27 is then ejected axially out of the installation cavity 2 under the force of the ejection member 6 along the installation cavity 2, so that the user can remove the filter cartridge 27.

As shown in the figure, the housing 1 of the water purifying device of the present embodiment is further provided with a locking assembly and a locking space 7, and the filter element 27 can be installed and locked in the locking space 7 after extending into the installation cavity 2. The locking assembly comprises a clamping part, a resilient part 8 and a toggle part, wherein,

the clamping component comprises two locking strips 9, the two locking strips 9 are symmetrically arranged relative to the locking space 7 and are mutually and rotatably connected, and the axial line of the mutual rotation of the locking strips 9 is parallel to the axial direction of the filter element 27 positioned in the locking space 7; one end of each locking strip 9 is provided with a locking end 10 positioned in the circumferential direction of the locking space 7, the locking ends 10 can move relative to the locking space 7, the two locking ends 10 are symmetrically arranged relative to the locking space 7, and the locking ends 10 are provided with extrusion surfaces 11 which can contact and extrude the circumferential side surfaces of the filter element 27; the other end of the two locking strips 9 is provided with a toggle end 12, and the toggle end 12 and the locking end 10 are respectively positioned at two sides of an axis line which is formed by the mutual rotation of the locking strips 9, so that the toggle end 12 and the locking end 10 can reversely and synchronously move relative to the locking space 7;

the elastic component 8 is a spring, and the elastic expansion direction of the spring is arranged along the radial direction of the filter element 27 positioned in the locking space 7; the number of the springs is 2, the springs are arranged on the outer side of the locking strip 9 and are respectively connected with the locking end 10;

the toggle part is arranged between the two toggle ends 12; the toggle part comprises two toggle blocks 13 and a rotating part 14 which can rotate relative to the locking space 7, the two toggle blocks 13 are symmetrically arranged relative to the rotating part 14 and are connected with the rotating part 14, and the rotating part 14 can rotate relative to the locking space 7 to enable the toggle blocks 13 to extend towards a toggle end 12; the shifting block 13 is connected with a sliding chute 15 for guiding the extending direction of the shifting block 13 so as to ensure that the shifting block 13 always moves along the self axial direction; the rotating member 14 includes two cam portions 16 symmetrically arranged with respect to an axis about which the rotating member 14 rotates automatically and two stopper portions 17 symmetrically arranged with respect to the axis about which the rotating member 14 rotates automatically, and the two cam portions 16 and the two stopper portions 17 are arranged at intervals in a circumferential direction of the rotating member 14.

Besides the specific designs of the clamping component, the elastic component 8 and the toggle component, those skilled in the art can also change the basic concept based on the design, for example, the mutually independent locking ends 10 are respectively arranged at two sides of the locking space 7 to extrude the filter element 27 located in the locking space 7, or the toggle component is arranged at other positions, and the connection with the toggle end 12 or the locking end 10 is realized through a transmission structure, such as a connecting rod transmission design, a gear transmission design, a cam transmission design, etc., so as to realize the quick locking of the filter element 27. And are not described in detail herein.

The rotating member 14 can be driven by a manual or automatic driving means, such as a motor, a handle, etc., to rotate relative to the locking space 7. In this embodiment, the rotating member 14 is provided with a transmission rod 18 arranged along the axial direction of the filter element 27; the transmission rod 18 is connected to the rotating member 14 at one end and provided with a knob 19 at the other end for rotation by a user. The knob 19 protrudes out of the housing 1.

In addition, in the present embodiment, a mounting plate component 20 is further disposed in the housing 1, a reset groove 21 is disposed in the mounting plate component 20, and a reset elastic component 22 capable of moving along the axial direction of the reset groove 21 is disposed in the reset groove 21; the rotating member 14 is provided with a reset block 23 extending into the reset groove 21, the reset block 23 is connected with the reset elastic member 22 and presses the reset elastic member 22, and the reset elastic member 22 generates a force to the reset block 23 to move the rotating member 14 to the reset position. The reset position is the position of the rotating member 14 when the toggle block 13 can be pressed on the limit portion 17. Meanwhile, a limiting groove 24 is also arranged in the mounting plate component 20, and the limiting groove 24 is axially arranged along the shifting block 13; a limiting block 25 extending into the limiting groove 24 is arranged in the toggle block 13 to limit the extending stroke of the toggle block 13.

Before the filter element 27 is not installed in the locking space 7, the two locking ends 10 synchronously extend into the locking space 7 under the action of the spring, so that the cross-sectional area of the locking space 7 is smaller than that of the filter element 27. At this time, the locking end 10 is at the first stroke position, the locking end 10 reaches the limit position extending into the locking space 7, and the locking end 10 generates a force to the toggle block 13 to move towards the rotating member 14, so that the toggle block 13 is pressed on the limit portion 17.

After the filter element 27 is rotated into the locking space 7, the pressing surface 11 of the locking end 10 presses the circumferential side surface of the filter element 27, so that the filter element 27 is locked in the locking space 7, and at the same time, the circumferential side surface of the filter element 27 presses the locking end 10 via the pressing surface 11, so that the locking end 10 moves to the outside of the locking space 7. The spring, however, always exerts a force on the locking end 10, which force is directed towards the filter insert 27 located in the locking space 7, so that the pressing surface 11 of the locking end 10 always presses the circumferential side of the filter insert 27 located in the locking space 7. At this time, the locking structure is in the locking position, and the filter cartridge 27 is locked in the locking space 7 by the locking structure.

When a user needs to unlock the filter element 27, the knob 19 rotates the rotating member 14, so that the rotating member 14 rotates automatically relative to the locking space 7, the toggle block 13 is switched from being connected with the limiting part 17 to being connected with the cam part 16, the toggle block 13 is driven to extend towards the toggle end 12, the toggle block 13 is enabled to contact and press the toggle end 12, the toggle end 12 rotates relative to the locking space 7, the locking end 10 moves relative to the locking space 7 until the pressing surface 11 of the locking end 10 is separated from the circumferential side surface of the filter element 27, and the locking end 10 is enabled to release the locking of the filter element 27, at the moment, the locking end 10 is located at the second stroke position, the locking end 10 reaches the limit position of being moved out of the locking space 7, the toggle block 13 is pressed on the cam part 16, the locking structure is located at the unlocking position, the filter element 27 is unlocked from the locking space 7, and the user can take out the filter element 27 at any time.

The preferred embodiment of the present invention is only listed in the present specification, and all the technical changes equivalent to those made under the working principle and thought of the present invention are considered as the protection scope of the present invention.

Claims

1. A water purifying device comprises a shell, wherein an installation cavity for installing a filter element is arranged in the shell; one end of the mounting cavity is opened, and the other end of the mounting cavity is communicated with a waterway interface; a filter element is arranged in the installation cavity, one end of the filter element is communicated to the waterway interface, and the other end of the filter element is close to the opening of the installation cavity; the method is characterized in that: the shell is internally provided with an ejection assembly extending into the installation cavity, the ejection assembly comprises a contact part and an ejection part which are connected with each other, and the contact part is abutted against one end of the filter element close to the opening and can move along the axial direction of the filter element relative to the installation cavity; the filter element presses against the contact member causing the contact member to press against the ejection member, the ejection member generating a force that causes the filter element to disengage from the mounting cavity.

2. The water purification apparatus of claim 1, wherein: the filter core is close to installation cavity open-ended one end and is provided with along the radial protruding in the protruding structure of filter core main part of filter core.

3. The water purification apparatus according to claim 1 or 2, wherein: the filter element is characterized in that a stroke hole communicated with the mounting cavity is formed in the shell, the stroke hole is axially arranged along the filter element, and a convex block extending towards the inside of the stroke hole is arranged at the opening of the stroke hole communicated with the mounting cavity.

4. The water purification apparatus of claim 3, wherein: the ejection assembly is arranged in the stroke hole; the contact component stretches into the installation cavity through the opening of the stroke hole and abuts against one end, close to the opening, of the filter element, and a stroke block which is matched with the convex block to limit the motion stroke of the contact component is arranged on the contact component.

5. The water purification apparatus of claim 1, wherein: a locking structure is arranged in the shell; the locking structure comprises a locking assembly connected with the shell and a locking space for the filter element to penetrate; the locking assembly comprises a clamping component, an elastic component and a toggle component; the clamping part is provided with a locking end positioned in the circumferential direction of the locking space, the locking end can move relative to the locking space, and the locking end is provided with a pressing surface which can contact and press the circumferential side surface of the filter element; the elastic component is connected with the clamping component, and the locking end extends into the locking space; when the filter element penetrates into the locking space, the locking end extrudes the elastic part, and the elastic part generates force towards the locking end to move towards the filter element positioned in the locking space; the toggle part is connected with the clamping part, a control block which can enable the toggle part to rotate relative to the locking space is connected to the toggle part, and the control block is arranged outside the shell; the toggle component can rotate relative to the locking space to enable the locking end to move relative to the locking space, so that the extrusion surface extrudes or breaks away from the circumferential side surface of the filter element.

6. The water purification apparatus of claim 5, wherein: the locking space is arranged between one end, communicated with the waterway interface, of the installation cavity and one end, provided with an opening, of the installation cavity along the axial direction of the installation cavity.

7. The water purification apparatus of claim 5, wherein: the clamping part comprises at least two locking strips, and the locking ends are formed at the ends of the locking strips; the two locking ends are symmetrically arranged relative to the locking space, the two locking strips are mutually rotationally connected, and the axial line of the mutual rotation of the locking strips is parallel to the axial direction of the filter element positioned in the locking space; the elastic component is connected with the locking ends, and the two locking ends synchronously extend into the locking space.

8. The water purification apparatus of claim 7, wherein: the clamping component also comprises a toggle end which is connected with the locking end and moves reversely and synchronously with the locking end; the locking end is formed at one end of the locking strip, the poking end is formed at the other end of the locking strip, and the locking end and the poking end are respectively positioned at two sides of an axis of the locking strip, which rotates mutually; the toggle part is arranged between the two toggle ends; the poking part comprises at least two poking blocks and a rotating part capable of rotating relative to the locking space, the control block is connected with the rotating part, the two poking blocks are symmetrically arranged relative to the rotating part and are connected with the rotating part, and the rotating part can rotate relative to the locking space to enable the poking blocks to extend out towards the poking end.

9. The water purification apparatus of claim 8, wherein: the mounting plate component is internally provided with a reset groove, and the reset groove is internally provided with a reset elastic component which can axially move along the reset groove; the rotating part is provided with a reset block extending into the reset groove, the reset block is connected with the reset elastic component and extrudes the reset elastic component, and the reset elastic component generates force for the reset block to enable the rotating part to move to a reset position.

10. The water purification apparatus of claim 8, wherein: the rotating piece comprises at least two cam parts which are symmetrically arranged around an axis relative to the rotating piece and rotate automatically and at least two limiting parts which are symmetrically arranged around the axis relative to the rotating piece and rotate automatically, and the cam parts and the limiting parts are arranged at intervals in the circumferential direction of the rotating piece.