Filter element device and water purifier comprising same

Abstract

The utility model provides a filter element device and a water purifier comprising the same. The filter element device comprises a cover plate, a filter element body and a pushing assembly, a first matching piece is arranged on the outer surface of the filter element body, the cover plate is arranged on the filter element body in a sleeving mode, and a second matching piece is arranged on the surface, facing the filter element body, of the cover plate and used for switching the locking state and the unlocking state of the filter element device; in the unlocking state, the first matching piece abuts against the second matching piece in the direction that the filter element body is separated from the cover plate; in the unlocking state, in the direction that the filter element body is separated from the cover plate, the first matching piece and the second matching piece are staggered, and the filter element body is separated from the cover plate; the pushing assembly comprises a driving part and a pushing part, the driving part is connected with the filter element body, the pushing part is meshed with the driving part, the driving part is used for driving the pushing part to move in the direction close to or away from the cover plate, and the pushing part is used for applying tangential force to the cover plate so as to switch the locking state and the unlocking state.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water purification, especially to a filter core device and a water purifier comprising the same. BACKGROUND

[0002] With the continuous improvement of people's quality of life requirements and the enhancement of health consciousness, water purifiers are increasingly widely used in daily life. On the one hand, the global water shortage and the aggravation of water pollution problems have made residents increasingly concerned about the safety of drinking water. Water purifiers, as an important device to ensure the safety of household drinking water, can effectively remove harmful substances such as impurities, heavy metals, bacteria, viruses, etc. in water, while retaining an appropriate amount of minerals to meet people's demand for healthy drinking water. On the other hand, the continuous progress of technology has driven the upgrading of water purifier products. From simple filtration technology to the widespread use of various high-efficiency filtration technologies such as reverse osmosis, ultrafiltration, nanofiltration, etc. today, the performance and effectiveness of water purifiers have been significantly improved.

[0003] When the service life of the filter core of the water purifier expires, it needs to be replaced in time to ensure the normal use of the water purifier. Currently, the filter core and the cover plate on the waterway board are connected by multiple bolts. When replacing the filter core, an external tool is needed to loosen each bolt, and the filter core is removed from the cover plate. During the installation of the filter core later, each bolt also needs to be tightened, making the filter core replacement process relatively complex. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the defect that the filter core and the cover plate on the waterway board are connected by multiple bolts, and the filter core replacement process is relatively complex due to the need to loosen or tighten each bolt when replacing the filter core. The utility model provides a filter core device and a water purifier comprising the same.

[0005] The utility model solves the above technical problems by the following technical solutions:

[0006] The utility model discloses a filter core device, the filter core device includes a cover plate, a filter core body and a pushing assembly, the outer surface of the filter core body is equipped with a first matching part, the cover plate is sleeved on the filter core body, and the surface of the cover plate facing the filter core body is equipped with a second matching part, which is used for switching the locking state and the unlocking state of the filter core device.

[0007] In the unlocking state, the first matching part abuts against the second matching part in the direction that the filter core body is separated from the cover plate.

[0008] In the unlocking state, the first matching part and the second matching part are staggered in the direction that the filter core body is separated from the cover plate, and the filter core body is separated from the cover plate.

[0009] The pushing assembly comprises a driving member and a pushing member, the driving member is connected with the filter core body, the pushing member is engaged with the driving member, the driving member is used to drive the pushing member to move towards the cover plate or away from the cover plate, and the pushing member is used to apply a tangential force to the cover plate to switch the locking state and the unlocking state.

[0010] In the scheme, the above structure is adopted, the locking state and the unlocking state of the filter core device are switched through the interaction of the first matching member and the second matching member between the cover plate and the filter core body, so that the stability and reliability of the filter core device are improved, the filter core body can be quickly replaced by the user, and the maintenance time and labor intensity are reduced. Specifically, when in the locking state, the first matching member and the second matching member abut, the stable connection of the filter core body is ensured, the filter core body will not be loosened due to water flow impact or other external force, and the normal operation of the filter core device is ensured. When the filter core body needs to be replaced, the driving member drives the pushing member, and then the pushing member applies a tangential force to the cover plate, so that the unlocking state is switched. At this time, the first matching member and the second matching member are staggered with each other, the constraint between the filter core body and the cover plate is contacted, and the user can directly take out the filter core body from the cover plate, thereby saving the process of replacing the filter core. In addition, the pushing member and the driving member are engaged, the driving member drives the pushing member to move, and the stability and reliability of the movement of the pushing member are improved.

[0011] Preferably, the driving member is a gear, and the gear is rotationally connected with the filter core body.

[0012] In the scheme, the above structure is adopted, the gear transmission has the characteristics of high precision and high efficiency, and can ensure the stability of the driving of the pushing member, thereby being beneficial to the stability of the rotation of the cover plate.

[0013] Preferably, the number of the filter core bodies is multiple, and the pushing members on at least part of the filter core bodies share one driving member.

[0014] In the scheme, the above structure is adopted, a plurality of filter core bodies are arranged, and the pushing members on at least part of the filter core bodies share one driving member, so that the structure of the pushing assembly is highly integrated and compact, thereby reducing the number of driving members, reducing the complexity and manufacturing cost of the pushing assembly, and optimizing the space utilization. Due to the sharing of the driving member, the pushing rods on the adjacent two filter core bodies can move synchronously, so that the coordination and efficiency of the filter device during operation are ensured. In addition, the sharing of the driving member also reduces the energy consumption of the filter device, and is beneficial to prolonging the service life of the filter device.

[0015] Preferably, the pushing members connected with the two filter core bodies are symmetrically arranged along the shared driving member.

[0016] In the scheme, the above structure is adopted, the force of the two adjacent pushers can be ensured to be uniform during movement, and shaking or wear caused by uneven force is avoided, and the service life of the pusher is improved.

[0017] Preferably, the filter element device further comprises a fixing member, one end of the fixing member is connected with the filter element body, and the other end of the fixing member abuts against the pusher, so that the pusher is pressed against the surface of the filter element body.

[0018] In the scheme, the above structure is adopted, the fixing member is used to realize the attachment of the pusher and the filter element body, so that the stability and reliability of the pusher during movement are improved.

[0019] Preferably, the fixing member comprises a fixing body and a pressing part, the fixing body is connected with the filter element body, the other end of the fixing body extends to the side of the pusher away from the filter element body, one end of the pressing part is connected with the surface of the fixing body facing the pusher, and the other end of the pressing part extends to the surface close to the pusher and abuts against the pusher.

[0020] In the scheme, the above structure is adopted, the fixing body and the pressing part are used to realize the attachment of the pusher and the filter element body, so that the stability and reliability of the pusher during movement are improved.

[0021] Preferably, the filter element device further comprises a connecting member, one end of the connecting member is connected with the cover plate, and the other end of the connecting member extends away from the cover plate and is used to be connected with the pusher assembly.

[0022] In the scheme, the above structure is adopted, the connecting member is used to realize the connection of the pusher assembly and the cover plate, so that the pusher assembly can exert a tangential force on the cover plate through the connecting member, the cover plate can rotate relative to the filter element body, and the switching between the locked state and the unlocked state is realized.

[0023] Preferably, the cover plate comprises a fixing seat, a cover plate body and a rotating disc, the fixing seat is connected with the cover plate body, and a containing cavity for placing the rotating disc is formed between the fixing seat and the cover plate body, and the second matching member is arranged on the surface of the rotating disc facing the filter element body.

[0024] In the scheme, the above structure is adopted, the containing cavity formed between the fixing member and the cover plate body can protect the rotating disc, and the service life of the rotating disc is improved.

[0025] Preferably, the number of the first matching members is multiple, the multiple first matching members are arranged circumferentially around the outer surface of the filter element body, and the second matching member corresponds to the first matching member one by one.

[0026] In the scheme, the above structure is adopted, the connecting area of the cover plate and the filter core body is increased, and the stability and reliability of the connection of the cover plate and the filter core body are improved.

[0027] The utility model discloses still a kind of water purifier, the water purifier includes the filter core device as any one of the above.

[0028] In the scheme, the above structure is adopted, the filter device is applied to water purifier, the switching of the locking state and the unlocking state of the filter core device is realized by the interaction of the first matching part and the second matching part between the cover plate and the filter core body, so as to not only improve the stability and reliability of the filter core device, but also facilitate user to quickly replace filter core body, reduce maintenance time and labor intensity.Specifically, when being in the locking state, the first matching part and the second matching part abut, ensure the stable connection of the filter core body, and will not loosen due to water flow impact or other external force, guarantee the normal operation of the filter core device.When filter core body needs to be replaced, the driving member drives the pusher, so that the pusher applies tangential force to the cover plate, and the unlocking state can be switched.At this time, the first matching part and the second matching part are staggered with each other, the constraint between the filter core body and the cover plate is contacted, and the user can directly take out the filter core body from the cover plate, saving the process of replacing filter core.In addition, the pusher and the driving member are in meshing mode, the driving member drives the pusher to move, and the stability and reliability of the movement of the pusher are improved.

[0029] The utility model discloses a positive progress effect lies in:

[0030] The switching of the locking state and the unlocking state of the filter core device is realized by the interaction of the first matching part and the second matching part between the cover plate and the filter core body, so as to not only improve the stability and reliability of the filter core device, but also facilitate user to quickly replace filter core body, reduce maintenance time and labor intensity.Specifically, when being in the locking state, the first matching part and the second matching part abut, ensure the stable connection of the filter core body, and will not loosen due to water flow impact or other external force, guarantee the normal operation of the filter core device.When filter core body needs to be replaced, the driving member drives the pusher, so that the pusher applies tangential force to the cover plate, and the unlocking state can be switched.At this time, the first matching part and the second matching part are staggered with each other, the constraint between the filter core body and the cover plate is contacted, and the user can directly take out the filter core body from the cover plate, saving the process of replacing filter core.In addition, the pusher and the driving member are in meshing mode, the driving member drives the pusher to move, and the stability and reliability of the movement of the pusher are improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the schematic diagram of the filter device of the utility model embodiment.

[0032] Figure 2 Part structure diagram of the filter device of the embodiment of the present application.

[0033] Figure 3 Part structure diagram of the filter device of the embodiment of the present application.

[0034] Figure 4 Part structure diagram of the filter device of the embodiment of the present application.

[0035] Explanation of reference signs:

[0036] Filter core device 100

[0037] Cover plate 1

[0038] Second matching part 11

[0039] Fixed seat 12

[0040] Cover plate body 13

[0041] Rotating disc 14

[0042] Through hole 15

[0043] Filter core body 2

[0044] First matching part 21

[0045] Push assembly 3

[0046] Driving part 31

[0047] Push part 32

[0048] Fixed part 4

[0049] Fixed body 41

[0050] Pressing part 42

[0051] Connecting part 5

[0052] Handle 6 Specific implementation

[0053] The present application will be described in detail below with reference to a preferred embodiment and the accompanying drawings.

[0054] As Figures 1 to 4As shown, the embodiment provides a filter core device 100, which comprises a cover plate 1, a filter core body 2 and a pushing assembly 3. The outer surface of the filter core body 2 is provided with a first matching part 21. The cover plate 1 is sleeved on the filter core body 2, and the surface of the cover plate 1 facing the filter core body 2 is provided with a second matching part 11, which is used to switch the locking state and the unlocking state of the filter core device 100. In the unlocking state, the first matching part 21 abuts against the second matching part 11 in the direction in which the filter core body 2 is separated from the cover plate 1. In the unlocking state, the first matching part 21 and the second matching part 11 are staggered in the direction in which the filter core body 2 is separated from the cover plate 1, and the filter core body 2 is separated from the cover plate 1.

[0055] As shown, Figures 1 to 4 The pushing assembly 3 comprises a driving part 31 and a pushing part 32. The driving part 31 is connected with the filter core body 2, and the pushing part 32 is engaged with the driving part 31. The driving part 31 is used to drive the pushing part 32 to move towards or away from the cover plate 1. The pushing part 32 is used to apply a tangential force to the cover plate 1 to switch the locking state and the unlocking state. With the above structure, the switching of the locking state and the unlocking state of the filter core device 100 is realized through the interaction of the first matching part 21 and the second matching part 11 between the cover plate 1 and the filter core body 2, thereby not only improving the stability and reliability of the filter core device 100, but also facilitating the user to quickly replace the filter core body 2 and reducing the maintenance time and labor intensity. Specifically, when in the locking state, the first matching part 21 and the second matching part 11 abut against each other, ensuring the stable connection of the filter core body 2 and preventing it from loosening due to water flow impact or other external forces, thereby ensuring the normal operation of the filter core device 100. When the filter core body 2 needs to be replaced, the driving part 31 drives the pushing part 32 to apply a tangential force to the cover plate 1 through the pushing part 32, so as to switch to the unlocking state. At this time, the first matching part 21 and the second matching part 11 are staggered with each other, and the constraint between the filter core body 2 and the cover plate 1 is contacted, so that the user can directly take out the filter core body 2 from the cover plate 1, thereby saving the process of replacing the filter core. In addition, the pushing part 32 and the driving part 31 are in engagement, so that the driving part 31 drives the pushing part 32 to move, thereby improving the stability and reliability of the movement of the pushing part 32.

[0056] Need to be specifically explained, as Figure 4 shown, in the embodiment, the first matching part 21 and the second matching part 11 are both in block shape, and in other embodiments, the first matching part 21 and the second matching part 11 can also be in other forms, which are not limited herein.

[0057] In addition, as Figure 4As shown, the number of the first matching pieces 21 is multiple, and the multiple first matching pieces 21 are arranged circumferentially around the outer surface of the filter core body 2, and the second matching piece 11 corresponds to the first matching piece 21 one by one. By adopting the above structure, the connection area of the cover plate 1 and the filter core body 2 is increased, and the stability and reliability of the connection of the cover plate 1 and the filter core body 2 are improved. Specifically, taking the case where the axis of the filter core body 2 is placed in the vertical direction as an example, when the cover plate 1 is rotated in the direction of the filter core body 2 being separated from the cover plate 1, the second matching piece 11 is located below the first matching piece 21, so that the second matching piece 11 can limit the movement of the first matching piece 21, thereby preventing the filter core body 2 from being separated from the cover plate 1, and at this time, the filter core device 100 is in a locked state; when the first matching piece 21 is located above the adjacent two second matching pieces 11 in the direction of the filter core body 2 being separated from the cover plate 1, the first matching piece 21 and the second matching piece 11 are staggered, and at this time, the filter core body 2 can be separated from the cover plate 1.

[0058] In specific use, the driving piece 31 is a gear, and the gear is in rotational connection with the filter core body 2. By adopting the above structure, the gear transmission has the characteristics of high precision and high efficiency, and can ensure the stability of the driving pushing piece 32, thereby being beneficial to the stability of the rotation of the cover plate 1. In other embodiments, the driving piece 31 can also be a sawtooth, and at this time, the sawtooth can be fixedly connected with the filter core body 2.

[0059] As shown in the figure, Figures 1 to 4 The number of the filter core body 2 is multiple, and at least part of the pushing pieces 32 on the filter core body 2 share one driving piece 31. By adopting the above structure, through the arrangement of multiple filter core bodies 2, and at least part of the pushing pieces 32 on the filter core body 2 sharing one driving piece 31, the high integration and compactness of the pushing assembly 3 structure are realized, thereby reducing the number of the driving piece 31, reducing the complexity and manufacturing cost of the pushing assembly 3, and optimizing the space utilization. Due to the sharing of the driving piece 31, the pushing rods on the adjacent two filter core bodies 2 can move synchronously, ensuring the coordination and efficiency of the filter device during operation. In addition, the shared driving piece 31 also reduces the energy consumption of the filter device, which is beneficial to prolonging the service life of the filter device.

[0060] This embodiment takes the number of the filter core body 2 as two for illustrative expression, and in other embodiments, the number of the filter core body 2 can be adjusted according to actual needs, which is not limited herein.

[0061] The pushing pieces 32 connected to the two filter core bodies 2 are symmetrically arranged along the shared driving piece 31. By adopting the above structure, it can be ensured that the adjacent two pushing pieces 32 are uniformly stressed during movement, avoiding shaking or wear caused by uneven force, which is beneficial to improving the service life of the pushing piece 32.

[0062] In the embodiment, the driving member 31 is a gear, and the cover plate 1 further comprises a spring. Therefore, when the two push members 32 connected to the filter element bodies 2 are symmetrically arranged along the common driving member 31, one of the push members 32 moves towards the cover plate 1 under the action of the driving member 31, thereby applying a tangential force to the cover plate 1 through the push member 32, driving the cover plate 1 to rotate relative to the filter element body 2 to switch between the unlocked state and the locked state. The other push member 32 moves away from the cover plate 1 under the action of the driving member 31, at this time, the push rod moves away from the cover plate 1, and under the action of the spring, the cover plate 1 switches from the unlocked position to the locked position. Which push member 32 moves towards the cover plate 1 and which push member 32 moves away from the cover plate 1 is determined according to the rotation direction of the driving member 31. Therefore, by adopting the above structure, the simultaneous replacement of the two filter element bodies 2 can be realized, and one of the two filter element bodies 2 is in the unlocked state and the other is in the locked state.

[0063] As shown in Figures 1 to 4 , the filter element device 100 further comprises a fixing member 4, one end of the fixing member 4 is connected with the filter element body 2, and the other end of the fixing member 4 abuts against the push member 32 to press the push member 32 against the surface of the filter element body 2. By adopting the above structure, the fixing member 4 realizes the adhesion of the push member 32 and the filter element body 2, thereby improving the stability and reliability of the push member 32 during movement.

[0064] In the embodiment, the fixing member 4 is detachably connected with the filter element body 2 by a bolt. In other embodiments, the fixing member 4 and the filter element body 2 can also adopt other connection modes, which are not limited herein.

[0065] As shown in Figure 3 and Figure 4 , the fixing member 4 comprises a fixing body 41 and a pressing portion 42, the fixing body 41 is connected with the filter element body 2, the other end of the fixing body 41 extends away from the filter element body 2 to the side of the push member 32, one end of the pressing portion 42 is connected with the surface of the fixing body 41 facing the push member 32, and the other end of the pressing portion 42 extends towards the surface of the push member 32 and abuts against the push member 32. By adopting the above structure, the fixing body 41 and the pressing portion 42 realize the adhesion of the push member 32 and the filter element body 2, thereby improving the stability and reliability of the push member 32 during movement.

[0066] In the embodiment, the fixing body 41 and the pressing portion 42 are integrally formed, and in other embodiments, the fixing body 41 and the pressing portion 42 can also adopt other connection modes, which are not limited herein.

[0067] As shown in Figures 2 to 4As shown in the figure, the filter core device 100 further comprises a connecting piece 5, one end of the connecting piece 5 is connected with the cover plate 1, and the other end of the connecting piece 5 extends away from the cover plate 1 and is used for connecting with the pushing assembly 3. By adopting the above structure, the pushing assembly 3 is connected with the cover plate 1 through the connecting piece 5, so that the pushing assembly 3 can exert a tangential force on the cover plate 1 through the connecting piece 5, and the cover plate 1 can rotate relative to the filter core body 2 to switch between the locked state and the unlocked state.

[0068] It should be specifically explained that, in the embodiment, the extension direction of the connecting piece 5 is the same as one of the radial directions of the cover plate 1, the extension direction of the pushing assembly 3 is parallel to the axis direction of the filter core body 2, and the surface of the pushing assembly 3 in contact with the filter core body 2 is an inclined surface, so that the movement of the pushing assembly 3 along the axis direction of the filter core body 2 is converted into the movement along the tangential direction of the cover plate 1 through the inclined surface, so as to exert a tangential force on the cover plate 1, thereby enabling the cover plate 1 to rotate relative to the filter core body 2 to switch between the locked state and the unlocked state, which is conducive to improving the compactness of the structure of the filter core device 100.

[0069] As shown in the figure, Figure 3 and Figure 4 The cover plate 1 comprises a fixing seat 12, a cover plate body 13 and a rotating disc 14, the fixing seat 12 is connected with the cover plate body 13, and a containing cavity for placing the rotating disc 14 is formed between the fixing seat 12 and the cover plate body 13, and the second matching piece 11 is arranged on the surface of the rotating disc 14 facing the filter core body 2. By adopting the above structure, the rotating disc 14 can be protected through the containing cavity formed between the fixing piece 4 and the cover plate body 13, thereby prolonging the service life of the rotating disc 14.

[0070] In the embodiment, the surface of one of the fixing seat 12 and the cover plate body 13 is provided with a through hole 15 communicating with the containing cavity, so that one end of the connecting piece 5 can be connected with the rotating disc 14, and the other end of the connecting piece 5 extends out of the through hole 15 and cooperates with the pushing assembly 3.

[0071] In addition, in the embodiment, as shown in the figure, Figure 1 and Figure 2 The side of the filter core body 2 away from the cover plate 1 is provided with a handle 6, which facilitates the operator to take the filter core body 2.

[0072] The embodiment also provides a water purifier, which comprises the filter core device 100. The filter device is applied to the water purifier in the above structural form, the locking state and the unlocking state of the filter core device 100 are switched through the interaction of the first matching part 21 and the second matching part 11 between the cover plate 1 and the filter core body 2, so that the stability and reliability of the filter core device 100 are improved, the filter core body 2 can be quickly replaced by the user, and the maintenance time and labor intensity are reduced. Specifically, when in the locking state, the first matching part 21 and the second matching part 11 abut, the stable connection of the filter core body 2 is ensured, the filter core body 2 cannot be loosened due to water flow impact or other external force, and the normal operation of the filter core device 100 is ensured. When the filter core body 2 needs to be replaced, the driving part 31 drives the pushing part 32, so that the tangential force is applied to the cover plate 1 through the pushing part 32, and the unlocking state can be switched. At this time, the first matching part 21 and the second matching part 11 are staggered with each other, the constraint between the filter core body 2 and the cover plate 1 is contacted, and the user can directly take out the filter core body 2 from the cover plate 1, so that the process of replacing the filter core is saved. In addition, the pushing part 32 and the driving part 31 are in meshing mode, the driving part 31 drives the pushing part 32 to move, and the stability and reliability of the movement of the pushing part 32 are improved.

[0073] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A filter cartridge arrangement, characterized by The filter core device comprises a cover plate, a filter core body and a pushing assembly, an outer surface of the filter core body is provided with a first matching part, the cover plate is sleeved on the filter core body, and a surface of the cover plate facing the filter core body is provided with a second matching part for switching a locking state and an unlocking state of the filter core device. In the unlocking state, the first matching part abuts against the second matching part in a direction in which the filter core body is separated from the cover plate. In the unlocking state, the first matching part and the second matching part are staggered in the direction in which the filter core body is separated from the cover plate, and the filter core body is separated from the cover plate. The pushing assembly comprises a driving part and a pushing part, the driving part is connected with the filter core body, the pushing part is engaged with the driving part, the driving part is used for driving the pushing part to move towards or away from the cover plate, and the pushing part is used for applying a tangential force to the cover plate to switch the locking state and the unlocking state.

2. The filter cartridge arrangement of claim 1 wherein, The driving part is a gear, and the gear is rotationally connected with the filter core body.

3. The filter cartridge arrangement of claim 1 wherein, The number of the filter core bodies is plural, and the pushing parts on at least part of the filter core bodies share one driving part.

4. The filter cartridge arrangement of claim 3 wherein, The pushing parts connected on two of the filter core bodies are symmetrically arranged along the shared driving part.

5. The filter cartridge arrangement of claim 1 wherein, The filter core device further comprises a fixing part, one end of the fixing part is connected with the filter core body, and the other end of the fixing part abuts against the pushing part to press the pushing part against a surface of the filter core body.

6. The filter cartridge arrangement of claim 5 wherein, The fixing part comprises a fixing body and a pressing part, the fixing body is connected with the filter core body, the other end of the fixing body extends to a side of the pushing part away from the filter core body, one end of the pressing part is connected with a surface of the fixing body facing the pushing part, and the other end of the pressing part extends to a surface close to the pushing part and abuts against the pushing part.

7. The filter cartridge arrangement of claim 1 wherein, The filter core device further comprises a connecting part, one end of the connecting part is connected with the cover plate, and the other end of the connecting part extends away from the cover plate to be connected with the pushing assembly.

8. The filter cartridge arrangement of claim 1 wherein, The cover plate comprises a fixing seat, a cover plate body and a rotating disc, the fixing seat is connected with the cover plate body, and a containing cavity for placing the rotating disc is formed between the fixing seat and the cover plate body, and the second matching part is arranged on a surface of the rotating disc facing the filter core body.

9. The filter cartridge arrangement of claim 1 wherein, The number of the first matching parts is plural, and the plural first matching parts are circumferentially arranged around the outer surface of the filter core body, and the second matching parts correspond to the first matching parts one by one.

10. A water purifier characterized by comprising: The water purifier comprises the filter core device according to any one of claims 1-9.

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