Water purification equipment

Abstract

The utility model provides water purification equipment. The water purification equipment comprises a frame assembly; the filter assembly comprises a first filter seat, a second filter seat, a first filter cartridge, a second filter cartridge, a first filter element, a second filter element, a first filter cover and a second filter cover, the first filter seat and the second filter seat are fixed with the frame assembly, the first filter seat is communicated with the second filter seat, the first filter cartridge is connected with the first filter seat, the first filter cover is arranged at the other end of the first filter cartridge, and the second filter cover is arranged at the other end of the second filter cartridge. The first filter cartridge is connected with the frame assembly, and the first filter element is arranged in the first filter cartridge; the second filter element is arranged in the second filter cartridge in the same structure; the first filter cartridge and the second filter cartridge are horizontally arranged, the first filter element is directly connected with the first filter seat, and the second filter element is directly connected with the second filter seat; the first filter seat comprises a water inlet and a water outlet, the first filter element is provided with a first connector, and the first connector is directly connected with the water outlet. The filter element and the filter seat are directly connected, a user can directly replace the filter element instead of replacing the filter cartridge, and the horizontal arrangement is convenient for the user to disassemble and assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purification technical field, especially a water purification equipment. BACKGROUND

[0002] In the prior art, the water purification equipment is usually installed in the kitchen space, and the position is low. The filter bottle of the existing water purification equipment is usually fixed vertically on the top plate, and the user needs to pull out the water purification equipment from the kitchen space to the outside, and then rotate the filter bottle downward to replace the filter element, which is extremely inconvenient to operate. Moreover, the existing filter element is in an integrated structure of a filter cylinder and a filter element, and the user needs to replace the filter cylinder together with the filter element to replace the filter element, which greatly increases the cost. Therefore, it is necessary to provide a water purification equipment facilitating separate replacement of the filter element to overcome the defects in the prior art. SUMMARY

[0003] The utility model aims at providing a water purification equipment.

[0004] According to one aspect of the utility model, a water purification equipment is provided, which comprises:

[0005] a frame assembly;

[0006] a filter assembly, the filter assembly comprising a first filter seat, a second filter seat, a first filter cylinder, a second filter cylinder, a first filter element, a second filter element, a first filter cover and a second filter cover, the first filter seat and the second filter seat being fixed with the frame assembly, the first filter seat and the second filter seat being communicated, one end of the first filter cylinder being connected with the first filter seat, the first filter cover being arranged at the other end of the first filter cylinder, the end of the first filter cylinder close to the first filter cover being connected with the frame assembly, the first filter element being detachably arranged in the first filter cylinder, one end of the second filter cylinder being connected with the second filter seat, the second filter cover being arranged at the other end of the second filter cylinder, the end of the second filter cylinder close to the second filter cover being connected with the frame assembly, the second filter element being detachably arranged in the second filter cylinder;

[0007] the first filter cylinder and the second filter cylinder are both arranged horizontally, the first filter element is directly connected with the first filter seat, and the second filter element is directly connected with the second filter seat;

[0008] the first filter seat comprises a water inlet arranged at the radial outer side of the first filter element and a water outlet arranged at the radial inner side of the first filter element, one end of the first filter element close to the water outlet is provided with a first connector, the first connector is directly connected with the water outlet, and the second filter seat has the same structure as the first filter seat.

[0009] Preferably, the first connector comprises a main body portion and a matching portion, the main body portion is located at one end of the first filter element, the matching portion protrudes from the center of the main body portion to one side of the main body portion along the axial direction of the first filter element, and the water outlet is connected with the matching portion.

[0010] Preferably, the first filter seat further comprises a sealing part, the sealing part is arranged around the water outlet, the sealing part extends along the axial direction of the water outlet, the sealing part is in contact with the main part, the sealing part is located outside the circumference of the fitting part, and the sealing part is arranged between the water inlet and the water outlet.

[0011] Preferably, the fitting part is recessed from the main part to the inside of the first filter core along the axial direction of the first filter core, the water outlet extends into the fitting part, and the structure of the connection between the second filter core and the second filter seat is the same as the structure of the connection between the first filter seat and the first filter seat.

[0012] Preferably, a first connecting pipe is arranged between the first filter seat and the second filter seat, and the first filter seat and the second filter seat are communicated through the first connecting pipe.

[0013] Preferably, the axial both ends of the first filter cartridge are provided with threads, one end of the first filter cartridge is threadedly connected with the first filter seat, the other end of the first filter cartridge is threadedly connected with the first filter cover, the axial both ends of the second filter cartridge are provided with threads, and the axial both ends of the second filter cartridge are threadedly connected with the second filter seat and the second filter cover, respectively.

[0014] Preferably, the frame assembly comprises a first support, a second support and a fixing plate, the fixing plate is fixed with the first support, the first filter seat and the second filter seat are fixedly connected with the fixing plate, and the first filter cartridge and the second filter cartridge are connected with the second support at the end away from the fixing plate.

[0015] Preferably, the first filter cover comprises a first positioning part, the first filter core further comprises a second positioning part, the second positioning part is arranged at the end of the first filter core close to the first filter cover, the first positioning part and the second positioning part extend to the same side along the axial direction of the first filter core, the first positioning part is connected with the second positioning part, and the second filter cover has the same structure as the first filter cover.

[0016] Preferably, the first filter cover is provided with a second sealing part, the second sealing part is arranged along the circumferential direction of the first positioning part, the second sealing part is arranged in contact with the first filter core, and the second positioning part is arranged inside the second sealing part.

[0017] Preferably, a first guide rib is arranged in the first filter seat, the first guide rib extends into the first filter cartridge along the axial direction, the first guide rib is arranged outside the circumference of the first filter core, a second guide rib is arranged on the inner wall of the first filter cartridge, the second guide rib extends along the axial direction, and the second guide rib protrudes from the inner wall of the first filter cartridge along the radial direction to the axial direction.

[0018] Compared with the prior art, the water purification equipment has the following beneficial effects:

[0019] The structure is compact, the layout is reasonable, the filter element and the filter cartridge are horizontally arranged, a filter cover is arranged at the end of the filter cartridge, the filter cover is directly rotated and removed from the side, the filter element is directly connected with the filter seat, the filter cartridge and the filter element are arranged in a split mode, the filter cartridge is repeatedly used, the filter element is replaced alone, environmental protection is saved, and use cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be explained further in detail below by combining with the drawings and specific embodiment:

[0021] Figure 1 It is the first perspective view of water purifying equipment of the utility model;

[0022] Figure 2 It is the second perspective view of water purifying equipment of the utility model;

[0023] Figure 3 It is the perspective view of filter assembly of the utility model;

[0024] Figure 4 It is the sectional view of filter assembly of the utility model;

[0025] Figure 5 It is the full section view of filter assembly of the utility model;

[0026] Figure 6 It is the perspective view of first filter seat of the utility model;

[0027] Figure 7 It is the sectional view of water outlet pipe of the utility model;

[0028] Figure 8 It is the sectional view of first filter seat of the utility model;

[0029] Figure 9 It is the sectional view of exhaust valve of the utility model;

[0030] Figure 10 It is the perspective view of water inlet pipe of the utility model;

[0031] Figure 11 It is the exploded view of first filter element of the utility model;

[0032] Figure 12 It is the exploded view of first filter seat of the utility model;

[0033] Figure 13 It is the sectional view of first filter element of the utility model;

[0034] Figure 14 It is the partial sectional view of first filter element of the utility model. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0036] In order to make the drawing simple, only the parts related to the present application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one".

[0037] It should be further understood that the term "and / or" used in the specification and claims of the present application means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0038] In this paper, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will describe the specific embodiments of the present application with reference to the drawings. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor, and other embodiments can also be obtained.

[0041] Referring to Figure 1 and Figure 4The utility model provides a kind of water purification equipment 100, comprising: frame assembly 1, filter assembly 2, water inlet pipe 3 and water outlet pipe 4.Filter assembly 2 includes first filter seat 21, second filter seat 22, third filter seat 23, first filter cartridge 24, second filter cartridge 25, third filter cartridge 26, first filter core 241, second filter core 251, third filter core 261, first filter cover 242, second filter cover 252 and third filter cover 262.The one end of first filter cartridge 24 is connected in screw thread with first filter seat 21, and the other end is connected in screw thread with first filter cover 242.First filter core 241 is replaceably arranged in first filter cartridge 24.

[0042] Referring to Figure 2 and Figure 5 The one end of second filter cartridge 25 is connected in screw thread with second filter seat 22, and the other end is connected in screw thread with second filter cover 252.Second filter core 251 is replaceably arranged in second filter cartridge 25.The one end of third filter cartridge 26 is connected in screw thread with third filter seat 23, and the other end is connected in screw thread with third filter cover 262.Third filter core 261 is replaceably arranged in third filter cartridge 26.First filter cartridge 24, second filter cartridge 25 and third filter cartridge 26 are sequentially arranged horizontally on the same vertical plane from top to bottom.Frame assembly 1 includes first support 11 arranged at one side of first filter cartridge 24, second support 12 arranged at the other side of first filter cartridge 24, cover plate 13 arranged between first support 11 and second support 12, fixed plate 14 fixed with first support 11 and bottom plate 15 arranged at the bottom of filter assembly 2.

[0043] Referring to Figure 1 and Figure 2 Cover plate 13 is fixedly connected with first support 11 and second support 12.Cover plate 13 includes top plate 131 arranged at the top of first support 11 and second support 12, first side plate 132 bent from one end of top plate 131 and vertically extended downward, and second side plate 133 bent from the other end of top plate 131 and vertically extended downward.Both ends of first side plate 132 and second side plate 133 are fixed to first support 11 and second support 12 respectively.First support 11 and second support 12 are vertically arranged and located inside cover plate 13.First filter cartridge 24 is arranged between first side plate 132 and second side plate 133.First side plate 132 is further provided with water pressure gauge 1321 for displaying water pressure in water purification equipment 100.

[0044] Referring to Figure 2 and Figure 6The first filter seat 21, the second filter seat 22 and the third filter seat 23 are identical in structure and are fixed to the fixed plate 14. The fixed plate 14 is provided with a strip-shaped positioning through hole 141 for positioning. The end of the first filter seat 21 fixed to the fixed plate 14 is provided with a filter seat positioning portion 212 matched with the positioning through hole 141 and protruding. After the filter seat positioning portion 212 is inserted into the positioning through hole 141, the first filter seat 21 and the fixed plate 14 are fixed by screws. The second filter seat 22 and the third filter seat 23 are fixed to the fixed plate 14 by the same structure. The first filter seat 21 comprises a water inlet 214 and a water outlet 215. The water outlet 215 is arranged at the radially inner side of the first filter core 241, and the water inlet 214 is arranged at the radially outer side of the first filter core 241.

[0045] Referring to Figure 11 and Figure 13 The first filter core 241 comprises a first joint 2411. The first joint 2411 comprises a main body portion 24111 and a matching portion 24112. The main body portion 24111 is located at one end of the first filter core 241 and wraps the first filter core 241. The matching portion 24112 protrudes from the center of the main body portion 24111 to one side of the first filter core 241 in the axial direction and matches with the water outlet 215. In this embodiment, the water outlet 215 extends to one side of the first filter cover 242 in the axial direction of the first filter core 241. The matching portion 24112 is recessed from the main body portion 24111 to one side of the first filter cover 242. The water outlet 215 extends into the matching portion 24112. The first filter core 241 is directly connected to the first filter seat 21. The first joint 2411 is directly connected to the water outlet 215. The second filter core 251 is directly connected to the second filter seat 22.

[0046] Referring to Figure 12 and Figure 13 The first filter seat 21 further comprises a sealing portion 216. The sealing portion 216 is arranged around the water outlet 215, extends to one side of the first filter core 241 in the axial direction of the water outlet 215, and contacts the main body portion 24111. The sealing portion 216 is located outside the circumference of the matching portion 24112 and is arranged between the water inlet 214 and the water outlet 215. The connection structure of the second filter core 251 and the second filter seat 22 and the connection structure of the third filter core 261 and the third filter seat 23 are the same as the connection structure of the first filter core 241 and the first filter seat 21. The first filter seat 21 is provided with a first guide rib 217. The inner wall of the first filter cartridge 24 is provided with a second guide rib 243.

[0047] The first guide rib 217 and the second guide rib 243 both extend in the axial direction of the first filter cartridge 24. The first guide rib 217 extends from the first filter seat 21 into the first filter cartridge 24. The first guide rib 217 and the second guide rib 243 are both located at the radially outer side of the first filter core 241. The second guide rib 243 protrudes from the inner wall of the first filter cartridge 24 in the radial direction to the axis direction. Referring toFigure 14 The first filter cover 242 comprises a first positioning portion 2421 and a second sealing portion 2422. The first filter element 241 further comprises a second positioning portion 2412. The second positioning portion 2412 is located at one end of the first filter element 241 close to the first filter cover 242.

[0048] The first positioning portion 2421 and the second positioning portion 2412 extend to the same side along the axial direction of the first filter element 241. In this embodiment, the first positioning portion 2421 extends into the first filter element 241, and the second positioning portion 2412 is recessed inwardly of the first filter element 241. The first positioning portion 2421 extends into the second positioning portion 2412. The first positioning portion 2421 and the second positioning portion 2412 are connected for positioning and fixing the first filter element 241. The first filter cover 242, the second filter cover 252 and the third filter cover 262 are the same in structure. The first filter cartridge 24, the second filter cartridge 25 and the third filter cartridge 26 are the same in structure. The first filter element 241, the second filter element 251 and the third filter element 261 are the same in structure. The second sealing portion 2422 is arranged outside the circumference of the first positioning portion 2421 and the second positioning portion 2412. The second sealing portion 2422 is in contact with the first filter element 241.

[0049] Referring to Figure 2 and Figure 3 The second support 12 comprises a first support 121, a second support 122 and a third support 123. The first support 11 and the second support 12 are arranged in a "Π" type structure. The first support 121, the second support 122 and the third support 123 are fixed at both ends and the second support 12. The first support 121 is in contact with the first filter cartridge 24 and is used for fixing the first filter cartridge 24. The second support 122 is in contact with the second filter cartridge 25 and is used for fixing the second filter cartridge 25. The third support 123 is in contact with the third filter cartridge 26 and is used for fixing the third filter cartridge 26.

[0050] The first support 121, the second support 122 and the third support 123 of this embodiment are the same in structure, are all arranged as a semicircular ring and are arranged to surround below the filter cartridge for supporting the filter cartridge, and are fixed at both ends and the second support 12. In other embodiments, a split type design can also be used and is arranged on both sides of the filter cartridge for clamping the filter cartridge. The filter element of this embodiment is made of pp cotton and activated carbon material. The three filter cartridges and the filter element partially extend out of the second support 12. The first filter cover 242, the second filter cover 252 and the third filter cover 262 are located outside the frame assembly 1, which is convenient for screwing. The filter assembly 2 of the utility model is arranged in a horizontal position, which is convenient for users to replace the filter element; the fixing structure is simple and easy to install, and has good stability.

[0051] Referring to Figure 2 , Figure 9 and Figure 10The water inlet pipe 3 is arranged at the bottom of the filter assembly 2. The water inlet pipe 3 comprises a water inlet interface 31, a safety valve 32 and a waste water outlet 33. The safety valve 32 is opened to release pressure when the water pressure inside the device is too high. The waste water outlet 33 is opened to discharge waste water inside the device, and the waste water is discharged from the bottom of the device. The water pressure gauge 1321 is connected to the water inlet pipe 3 to measure the water pressure. The water outlet pipe 4 is arranged at the top of the filter assembly 2 and penetrates the top plate 131. The water outlet pipe 4 further comprises an air exhaust valve 7. The air exhaust valve 7 comprises a valve body 71, a valve core 72, a valve cover 73 and an elastic member 74. The valve cover 73 is screwed on the valve body 71. The valve core 72 penetrates the valve cover 73 at one end and is arranged between the valve cover 73 and the elastic member 74 at the other end.

[0052] When the air exhaust valve 7 is closed, the elastic member 74 presses the valve core 72 against one side of the valve cover 73. A gasket is arranged between the valve core 72 and the valve cover 73 to facilitate sealing. When the valve core 72 is pressed inward, the elastic member 74 is contracted under force, and the valve core 72 is retracted into the valve body 71, so that the air exhaust valve 7 is opened. The air exhaust valve 7 is arranged above the first filter seat 21, and water flowing from bottom to top discharges air inside the device from the air exhaust valve 7. The bottom plate 15 is fixed at one end to the first support 11 and at the other end to the second support 12. The bottom plate 15 is provided with connecting rods for reinforcing the first support 11 and the second support 12 along the radial direction of the third filter cartridge 26. The water inlet pipe 3 is arranged at one end of the bottom plate 15.

[0053] The water purification device 100 has compact structure, small volume and beautiful appearance. The device has high integration degree and various functions, which can meet the needs of users in various aspects, such as displaying water pressure of the device, discharging waste water when replacing filter element, safety valve and the like. The device can prolong the service life of the device, reduce the cost and time of users for replacement and maintenance, and is convenient for users to operate by themselves.

[0054] Referring to Figure 5 and Figure 6 , the water inlet pipe 3 is detachably connected with the third filter seat 23. The third filter seat 23 is connected with the second filter seat 22, and the second connecting pipe 5b is arranged between the third filter seat 23 and the second filter seat 22. The second filter seat 22 is connected with the first filter seat 21, and the first connecting pipe 5 is arranged between the second filter seat 22 and the first filter seat 21. The first filter seat 21 is detachably connected with the water outlet pipe 4. The second connecting pipe 5b and the first connecting pipe 5 have the same structure. The first connecting pipe 5 comprises a limiting portion 51 located at the middle of the axial direction and embedded portions 52 extending along the axial direction from both sides of the limiting portion 51. The limiting portion 51 has a diameter larger than that of the embedded portions 52, and the limiting portion 51 is located between the first filter seat 21 and the second filter seat 22. The embedded portions 52 are embedded into the lower end of the first filter seat 21 and the upper end of the second filter seat 22, respectively.

[0055] Referring to Figure 6 , Figure 7 and Figure 8The first filter seat 21 is provided with a first insertion hole 211 near one end of the water outlet pipe 4. The first insertion hole 211 extends radially and is located near one end of the fixed plate 14. The side where the water outlet pipe 4 and the first filter seat 21 are connected is provided with a first clamping groove 41. The first clamping groove 41 is recessed radially towards the axis direction from the radial outer end of the water outlet pipe 4. The first clamping groove 41 is arranged corresponding to the first insertion hole 211. The first connecting piece 6 is used to fix the first filter seat 21 and the water outlet pipe 4. The first connecting piece 6 comprises a second main body part 61 and an extension part 62 extending from the second main body part 61. The extension part 62 is embedded in the first clamping groove 41 through the first insertion hole 211.

[0056] The first connecting piece 6 further comprises a protruding part 63. The extension part 62 is located between the protruding part 63 and the second main body part 61. The protruding part 63 protrudes perpendicularly to the extension direction of the extension part 62 from the extension part 62, and is used to clamp the first clamping groove 41 and the water outlet pipe 4 to be fixed, so as to avoid falling off. The first filter seat 21 is provided with a second insertion hole 213 near one end of the second filter seat 22. The side where the first connecting pipe 5 and the first filter seat 21 are connected is provided with a second clamping groove 511. The second insertion hole 213 and the second clamping groove 511 are fixedly connected through a second connecting piece (not shown). The side where the second filter seat 22 and the first connecting pipe 5 are connected is provided with a third insertion hole (not shown). The side where the first connecting pipe 5 and the second filter seat 22 are connected is provided with a third clamping groove (not shown). The third insertion hole and the third clamping groove are fixedly connected through a third connecting piece (not shown). The structure of the second clamping groove 511 and the third clamping groove is the same as that of the first clamping groove 41.

[0057] The structures of the second connecting piece and the third connecting piece are the same as that of the first connecting piece 6. The structure of the second connecting pipe 5b is the same as that of the first connecting pipe 5. The second connecting pipe 5b is detachably connected and fixed to the second filter seat 22 and the third filter seat 23 at two ends through the same connecting mode as the first connecting pipe 5. The lower end of the second filter seat 22 is further provided with a fourth insertion hole, the upper side of the third filter seat 23 is provided with a fifth insertion hole, and the lower end of the third filter seat 23 is provided with a sixth insertion hole. The fourth insertion hole and the second connecting pipe 5b are provided with a fourth connecting piece. The fifth insertion hole and the second connecting pipe 5b are provided with a fifth connecting piece. The sixth insertion hole and the water inlet pipe 3 are provided with a sixth connecting piece. The detachable connection mode of the water inlet pipe 3 and the third filter seat 23 is the same as the detachable connection mode structure of the water outlet pipe 4 and the first filter seat 21.

[0058] The water outlet pipe 4 and the first filter seat 21 of the utility model are detachably connected. The water inlet pipe 3 and the third filter seat 23 are detachably connected. The first filter seat 21 and the second filter seat 22 are respectively detachably connected to two ends of the first connecting pipe 5. The second filter seat 22 and the third filter seat 23 are respectively detachably connected to two ends of the second connecting pipe 5b. The utility model can avoid setting up hoses, waterway plates and the like, simplify the connecting structure, reduce the equipment volume, facilitate user installation and maintenance, and ensure the sealing property of the equipment at the same time.

[0059] As will be apparent to those skilled in the art, various modifications and variations can be made to the above-described exemplary embodiments of the present application without departing from the spirit and scope of the present application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A water purification apparatus, characterized by comprising: The utility model relates to a filter device, including: Frame assembly; Filter assembly, the filter assembly includes first filter seat, second filter seat, first filter cartridge, second filter cartridge, first filter core, second filter core, first filter cover and second filter cover, first filter seat, second filter seat all with frame assembly fixed, first filter seat and second filter seat are communicated, one end of first filter cartridge and first filter seat are connected, first filter cover is located the other end of first filter cartridge, the one end of first filter cartridge close to first filter cover and frame assembly are connected, first filter core is detachably located in first filter cartridge, one end of second filter cartridge and second filter seat are connected, second filter cover is located the other end of second filter cartridge, the one end of second filter cartridge close to second filter cover and frame assembly are connected, second filter core is detachably located in second filter cartridge; The first filter cartridge and second filter cartridge are both horizontally arranged, the first filter core is directly connected with the first filter seat, and the second filter core is directly connected with the second filter seat. The first filter seat includes a water inlet located radially outside the first filter core and a water outlet located radially inside the first filter core, the first filter core has a first connector located at an end close to the water outlet, the first connector is directly connected with the water outlet, and the second filter seat has the same structure as the first filter seat.

2. The water purification apparatus of claim 1, wherein The first connector includes a main body and a matching part, the main body is located at one end of the first filter core, and the matching part protrudes from the center of the main body to one side of the main body along the axial direction of the first filter core, the water outlet is connected with the matching part.

3. The water purification apparatus of claim 2, wherein The first filter seat further includes a sealing part, the sealing part is arranged around the water outlet, the sealing part extends along the axial direction of the water outlet, the sealing part is in contact with the main body, the sealing part is located outside the circumference of the matching part, and the sealing part is arranged between the water inlet and the water outlet.

4. The water purification apparatus of claim 3, wherein The matching part is recessed from the main body to the inside of the first filter core along the axial direction of the first filter core, the water outlet extends into the matching part, and the second filter core and the second filter seat have the same structure as the first filter seat and the first filter seat.

5. The water purification apparatus of claim 4, wherein A first connecting pipe is arranged between the first filter seat and the second filter seat, and the first filter seat and the second filter seat are communicated through the first connecting pipe.

6. The water purification apparatus of claim 5, wherein Both ends of the first filter cartridge in the axial direction are provided with threads, one end of the first filter cartridge is threadedly connected with the first filter seat, the other end of the first filter cartridge is threadedly connected with the first filter cover, both ends of the second filter cartridge in the axial direction are provided with threads, and both ends of the second filter cartridge in the axial direction are threadedly connected with the second filter seat and the second filter cover, respectively.

7. The water purification apparatus of claim 6, wherein The frame assembly includes a first support, a second support, and a fixing plate, the fixing plate is fixed with the first support, the first filter seat and the second filter seat are fixedly connected with the fixing plate, and one end of the first filter cartridge and the second filter cartridge away from the fixing plate is connected with the second support.

8. The water purification apparatus of claim 6, wherein The first filter cover includes a first positioning part, the first filter core further includes a second positioning part, the second positioning part is arranged at an end of the first filter core close to the first filter cover, the first positioning part and the second positioning part extend to the same side along the axial direction of the first filter core, the first positioning part is connected with the second positioning part, and the second filter cover has the same structure as the first filter cover.

9. The water purification apparatus of claim 8, wherein, The first filter cover is provided with a second sealing part arranged along the circumferential direction of the first positioning part, the second sealing part is arranged in contact with the first filter element, and the second positioning part is arranged inside the second sealing part.

10. The water purification apparatus of claim 9, wherein, The first filter seat is provided with a first guide rib extending along the axial direction into the first filter cylinder, the first guide rib is arranged outside the circumference of the first filter element, the inner wall of the first filter cylinder is provided with a second guide rib extending along the axial direction, and the second guide rib is protruded along the radial direction from the inner wall of the first filter cylinder to the axial direction.

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