A component used in a water purifier

Abstract

The present invention belongs to the technical field of water purifiers, and in particular relates to an assembly used in a water purifier, which includes a filter cartridge, a cartridge cover, and PP filter cotton. Impurities or dirt such as mud and sand carried in water will be filtered by the PP filter cotton and remain on the outside of the PP filter cotton when passing through the PP filter cotton. The filtered water then seeps backward through the PP filter cotton and is filtered by the PP filter cotton at the back, that is, the further back the PP filter cotton contacts the water, the less dirt it filters; the further back the PP filter cotton contacts the water, the less likely it is to get dirty, and the smaller its filtering effect on the water. In order to ensure that each PP filter cotton can fully play a filtering role, the present invention changes the position of the water inlet area during the filtration process. At the same time, the water inlet and outlet ends of the PP filter cotton will also undergo corresponding changes, that is, the number of times the PP filter cotton seeps from top to bottom and the number of times it seeps from bottom to top are basically the same, ensuring that the PP filter cotton installed in each installation shell can be fully utilized.

Description

Technical Field

[0001] The present invention belongs to the technical field of water purifiers, and in particular relates to a component used in a water purifier. Background Art

[0002] Water purifiers have gradually entered the homes of many users and are gradually playing an increasingly important role in their daily lives. Water purifiers, also known as water purifiers or water purifiers, are water treatment equipment that deeply filters and purifies water according to the requirements of water use.

[0003] During the use of the water purifier, for the first-level PP cotton filtration, water will enter from the upper side of the filter cartridge, be filtered by the PP cotton in the filter cartridge, and then flow out from the lower side of the filter cartridge. Impurities, mud, sand and other large particles in the water will be filtered out by the PP cotton, but because the water flows from top to bottom, most of the impurities in the water will be filtered out by the PP cotton above. When the water flows through the PP cotton below, the impurities it carries are relatively small, that is, the role of the PP cotton below in filtering is smaller than that of the PP cotton above. However, when replacing the PP cotton after using it for a period of time, the PP cotton in the filter cartridge needs to be replaced together, which will cause waste of the PP cotton below.

[0004] The present invention designs a component used in a water purifier to solve the above problems. Summary of the Invention

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A component used in a water purifier, comprising a filter cartridge, a cartridge cover, and PP filter cotton, wherein a sewage outlet is provided at the center of the lower end surface of the filter cartridge, a purified water concentration cavity is provided at the lower end of the filter cartridge, and a filtered water outlet is provided on the outer wall surface of the purified water concentration cavity; a purified water switch is rotatably mounted on the inner side of the filter cartridge, and seven mounting shells are evenly fixedly mounted on the inner circumference of the filter cartridge, and all the mounting shells can be combined to form a complete cartridge body.

[0007] For each installation shell, there are two partitions installed in it, the upper partition is provided with a plurality of evenly spaced third water holes that penetrate up and down, and the lower partition is provided with a plurality of fourth water holes that penetrate up and down and have stepped surfaces, and the fourth water holes correspond to the third water holes one by one; a water storage cavity is formed between the lower partition and the inner bottom surface of the corresponding installation shell, and a fifth water hole is provided on the outer wall of the water storage cavity; the rotating water purification switch can control whether the fifth water hole on the installation shell is connected to the filtered water outlet of the filter cartridge; the inner arc surface of the installation shell is provided with a drainage hole. The sewage hole, water outlet hole and water inlet hole, the sewage hole is located on the upper side of the lower partition and close to the lower partition, the water outlet hole and water inlet hole are located on the upper side of the upper partition; a seventh water hole is opened between the water storage chambers on the lower sides of two adjacent mounting shells, and a one-way pressure valve is installed in the seventh water hole; a plurality of rod-shaped PP filter cottons are evenly and detachably installed in the mounting shell, the lower end of the PP filter cotton is inserted into the fourth water hole, and the upper end of the PP filter cotton is inserted into the third water hole and is flush with the upper partition; a one-way valve is installed in each of the third water holes.

[0008] A water diversion shell is rotatably installed in the cylinder cover, and a first water hole is opened on the bottom surface of the water diversion shell. The area where the first water hole is located on the bottom surface of the water diversion shell is fan-shaped, and the size and shape of this area are exactly equal to the fan-shaped surface of the upper end surface of a single mounting shell; the upper end of the cylinder cover is the water inlet end, and a mounting sleeve is rotatably installed on the inner side of the water inlet end, and a spiral piece is fixedly installed on the inner side of the mounting sleeve; the rotation of the mounting sleeve can intermittently drive the water diversion shell to rotate; the lower end of the water diversion shell is fixedly installed with a switch control ring that can control whether the water inlet hole and the water outlet hole at the upper end of the mounting shell are connected or not.

[0009] As a preferred solution, the water purification switch is a cylindrical structure, and a plurality of square jacks are axially and evenly opened on the upper end surface of the water purification switch, and an annular groove is opened at the lower end of the water purification switch, and the annular groove is communicated with the water purification concentration cavity at the lower end of the filter cartridge; a sixth water hole is opened on the wall surface of the annular groove, which passes through the water purification switch; the sixth water hole cooperates with the fifth water hole opened at the lower end of the mounting shell.

[0010] The lower end of the water induction shell is evenly and fixedly mounted with a plurality of plug blocks that match the square plug holes on the upper end of the water purification switch.

[0011] As a preferred solution, the mounting shell is a strip structure with a fan-shaped cross section.

[0012] The hole walls at the upper and lower ends of the third water hole are provided with symmetrically distributed concave conical surfaces.

[0013] The one-way valve includes a valve plug, a second spring, a fixing ring, and a connecting block, wherein the valve plug is an annular structure with an outer conical surface, and the valve plug is slidably installed in the third water hole, and the PP filter cotton passes through the center of the valve plug and is in close contact with the inner ring surface of the valve plug; the outer conical surface of the valve plug cooperates with the inner concave conical surface on the upper side of the third water hole. When the outer conical surface of the valve plug is tightly fitted with the corresponding concave conical surface, the third water hole is closed, and water entering from the upper end of the mounting shell can only seep downward from the PP filter cotton; the fixing ring is fixedly installed in the third water hole by three circumferentially evenly distributed connecting blocks, and a second spring is fixedly installed between the fixing ring and the valve plug, and the second spring is a compression spring with preload.

[0014] As a preferred solution, an inner concave annular groove for plugging and cooperating with the filter cartridge is opened on the lower end surface of the cartridge cover; 7 circumferentially evenly distributed limiting modules are fixedly installed on the inner wall surface of the cartridge cover.

[0015] A guide cylinder is fixedly installed on the upper end surface of the water diversion shell, and the upper end of the guide cylinder is rotatably connected to the cylinder cover; a clamping block is fixedly installed on the outer wall surface of the guide cylinder, and the clamping block cooperates with the limit module; a fixed shell is fixedly installed on the outer wall surface of the lower end of the mounting sleeve, and the fixed shell is an annular shell and the outer wall surface of the fixed shell is open; a volute spring is fixedly installed between the inner ring wall of the fixed shell and the guide cylinder.

[0016] As a preferred solution, the limit module includes a limit shell, a first spring, and a limit block, wherein one end of the limit shell is an open end, the other end of the limit shell is fixedly installed on the inner wall of the cylinder cover, one end of the limit block is slidably installed in the limit shell, and the first spring is fixedly installed between the limit block and the inner end surface of the limit shell; the other end of the limit block has an inclined surface; when the water diversion shell rotates relative to the cylinder cover, the block on the guide cylinder rotates toward the inclined surface of the limit block.

[0017] As a preferred solution, a circular hole communicating with the inside and outside is opened at the upper end of the water induction shell, and a connecting convex ring with an inner groove is installed upward at the circular hole.

[0018] As a preferred solution, a sealing ring is installed between the installation sleeve and the inner wall surface of the water inlet end of the cylinder cover.

[0019] As a preferred solution, three drainage channels are opened on the inner circumference of the switch control ring, and each drainage channel has two second water holes at both ends thereof; the outer ring wall of the switch control ring is in close contact with the inner arc surface of the seven mounting shells; when in use, the mounting shell facing the first water hole at the lower end of the drainage shell has its water inlet and water outlet sealed by the outer ring wall of the switch control ring, and the upper end of the mounting shell is the water inlet area. The water flowing into the mounting shell can only seep downward from the PP cotton installed in the mounting shell or squeeze open the one-way valve in the mounting shell and flow down from the corresponding third water hole.

[0020] As a preferred solution, looking down from above, with the rotation direction of the spiral blade as the positive direction, the mounting shell on the lower side of the water inlet area is set as mounting shell No. 1, and the remaining six mounting shells are mounting shell No. 2, mounting shell No. 3, mounting shell No. 4, mounting shell No. 5, mounting shell No. 6 and mounting shell No. 7 in sequence. The area corresponding to mounting shell No. 7 is the water outlet area; the six second water holes opened on the switch control ring correspond to the water outlet hole on mounting shell No. 2, the water inlet hole on mounting shell No. 3, the water outlet hole on mounting shell No. 4, the water inlet hole on mounting shell No. 5, the water outlet hole on mounting shell No. 6, and the water inlet hole on mounting shell No. 7, respectively, that is, the water outlet hole of mounting shell No. 2 is connected to the water inlet hole of mounting shell No. 3, the water outlet hole of mounting shell No. 4 is connected to the water inlet hole of mounting shell No. 5, and the water outlet hole of mounting shell No. 6 is connected to the water inlet hole of mounting shell No. 7; the fifth water hole at the lower end of mounting shell No. 7 cooperates with the sixth water hole opened on the water purification switch.

[0021] Compared with the existing technology, the advantages of the present invention are:

[0022] 1. Impurities or dirt such as mud and sand carried in the water will be filtered by the PP filter cotton and remain on the outside of the PP filter cotton when passing through the PP filter cotton. The filtered water will seep backward through the PP filter cotton and be filtered by the PP filter cotton behind it. That is, the further back the PP filter cotton contacts the water, the less dirt it filters; the further back the PP filter cotton contacts the water, the less likely it is to get dirty, and the smaller its filtering effect on the water. In order to ensure that each PP filter cotton can fully play its filtering role, the present invention ensures that the PP filter cotton installed in each installation shell can be fully utilized by changing the position of the water inlet area during the filtration process.

[0023] 2. When the water inlet area is replaced, the water inlet and outlet ends of the PP filter cotton will also change accordingly, that is, the number of times the PP filter cotton seeps from top to bottom and the number of times it seeps from bottom to top are basically the same. This design further improves the utilization rate of the PP filter cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall appearance of the components.

[0025] Figure 2 This is a schematic diagram of the cylinder cover installation.

[0026] Figure 3 This is a schematic diagram of the distribution of sewage outlets and filtered water outlets.

[0027] Figure 4 This is a schematic diagram of the distribution of the plug and the first water hole.

[0028] Figure 5 It is a schematic diagram of the spiral plate distribution.

[0029] Figure 6 It is a structural diagram of the limit module.

[0030] Figure 7 It is a schematic diagram of the water shell structure.

[0031] Figure 8 It is a schematic diagram of the switch control loop structure.

[0032] Figure 9 This is a schematic diagram of the coordination between the switch control ring and the water outlet and inlet.

[0033] Figure 10 This is a schematic diagram of the installation shell distribution.

[0034] Figure 11 This is a schematic diagram of the one-way valve installation.

[0035] Figure 12 It is a schematic diagram of the one-way valve structure.

[0036] Figure 13 This is a schematic diagram of the coordination between the filtered water outlet and the water purification switch.

[0037] Figure 14 It is a schematic diagram of the installation shell structure.

[0038] Figure 15 This is a schematic diagram of the water purification switch structure.

[0039] Names in the figure: 1. Filter cartridge; 2. Cartridge cover; 3. Drain port; 4. Filtered water outlet; 5. Spiral plate; 6. Sealing ring; 8. Fixed housing; 9. Water diversion housing; 10. Switch control ring; 11. Limit module; 12. Spiral spring; 13. Water purification concentration chamber; 14. Mounting housing; 15. Water purification switch; 16. PP filter cotton; 17. Drain hole; 18. First water hole; 19. Insert block; 20. Mounting sleeve; 21. Limit housing; 22. First spring; 23. Limit block; 24. Inclined surface; 25. Guide Cylinder; 26, clamping block; 27, connecting convex ring; 28, concave annular groove; 29, concave conical surface; 30, second water hole; 31, drainage channel; 32, water outlet; 33, water inlet area; 34, water outlet area; 35, one-way valve; 36, valve plug; 37, second spring; 38, fixing ring; 39, connecting block; 40, partition; 41, water inlet; 42, third water hole; 43, fourth water hole; 44, fifth water hole; 45, water storage chamber; 46, jack; 47, sixth water hole; 48, annular groove; 49, seventh water hole. DETAILED DESCRIPTION

[0040] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following embodiments or drawings are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0041] A component 1 used in a water purifier, such as Figure 1 、2 As shown in FIG. 3 , it includes a filter cartridge 1, a cartridge cover 2, and PP filter cotton 16. Figure 3 As shown, a sewage outlet 3 is provided at the center of the lower end surface of the filter cartridge 1, and a clean water concentration cavity 13 is provided at the lower end of the filter cartridge 1. A filtered water outlet 4 is provided on the outer wall of the clean water concentration cavity 13. A clean water switch 15 is rotatably installed on the inner side of the filter cartridge 1. Figure 15 As shown, the water purification switch 15 is a cylindrical structure, and a plurality of square jacks 46 are uniformly opened axially on the upper end surface of the water purification switch 15. An annular groove 48 is opened at the lower end of the water purification switch 15, and the annular groove 48 is communicated with the water purification concentration cavity 13 at the lower end of the filter cartridge 1; a sixth water hole 47 is opened on the wall surface of the annular groove 48 and passes through the water purification switch 15; Figure 2 、 9 As shown in FIG. 10 , seven mounting shells 14 are evenly fixedly installed in the inner circumference of the filter cartridge 1. Figure 14 As shown, the mounting shell 14 is a strip structure with a fan-shaped cross section. Figure 9 、 10 As shown, all the mounting shells 14 can be combined to form a complete cylinder; Figure 14 As shown, for each mounting shell 14, two partitions 40 are installed therein, and a plurality of uniform and vertically penetrating third water holes 42 are provided on the upper partition 40, and a plurality of vertically penetrating fourth water holes 43 with stepped surfaces are provided on the lower partition 40, and the fourth water holes 43 correspond one-to-one to the third water holes 42; a water storage cavity 45 is formed between the lower partition 40 and the inner bottom surface of the corresponding mounting shell 14, and a fifth water hole 44 is provided on the outer wall surface of the water storage cavity 45; a sewage hole 17, a water outlet hole and a water inlet hole are provided on the inner arc surface of the mounting shell 14, the sewage hole 17 is located on the upper side of the lower partition 40 and close to the lower partition 40, and the water outlet hole and the water inlet hole are located on the upper side of the upper partition 40; a seventh water hole 49 is provided between the water storage cavities 45 on the lower sides of two adjacent mounting shells 14, and a one-way pressure valve is installed in the seventh water hole 49; as shown Figure 9 、 10 As shown, a plurality of rod-shaped PP filter cottons 16 are evenly and detachably installed in the mounting shell 14. The lower end of the PP filter cotton 16 is inserted into the fourth water hole 43, and the upper end of the PP filter cotton 16 is inserted into the third water hole 42 and flush with the upper partition 40; a one-way valve 35 is installed in each of the third water holes 42.

[0042] For the installation shell 14 corresponding to the water inlet area 33, the water inlet and outlet holes opened at the upper end thereof are both in a closed state, and the water in the water diversion shell 9 flows from top to bottom into the installation shell 14. A portion of the water flowing into the installation shell 14 will be filtered by the corresponding PP filter cotton 16 and then seep downward, while the other portion of the water will remain in the installation shell 14 and be stored above the upper partition 40. After the water above the upper partition 40 is full, new water will continue to be injected, so that the amount of water above the upper partition 40 increases, and the volume Under the condition that the water volume remains unchanged, the water pressure will increase. The water above the upper partition 40 will squeeze the valve plug 36 in the one-way valve 35, causing the valve plug 36 to move downward and the second spring 37 to compress; the downward movement of the valve plug 36 causes the third water hole 42 to open, and the water above the upper partition 40 flows downward from the third water hole 42 into the cavity between the upper partition 40 and the lower partition 40, and finally flows into the filter cartridge 1 from the drain hole 17 opened at the lower end of the mounting shell 14, and finally is discharged from the drain port 3 below the filter cartridge 1.

[0043] For the installation shells 14 in the non-water inlet area 33, the water inlet holes of three of the installation shells 14 are in an open state, and the water outlet holes are in a closed state. For these three installation shells 14, when water enters from the water inlet holes, a part of the water will be filtered by the corresponding PP filter cotton 16 and then seep downward, while the other part of the water will remain in the installation shell 14 and be stored above the upper partition 40. When the water above the upper partition 40 is full, new water will continue to flow in, so that the amount of water above the upper partition 40 increases. Under changing conditions, the water volume increases, which in turn increases the water pressure. The water above the upper baffle 40 squeezes the valve plug 36 in the one-way valve 35, causing the valve plug 36 to move downward and compressing the second spring 37. The downward movement of the valve plug 36 opens the third water hole 42, and the water above the upper baffle 40 flows downward from the third water hole 42 into the cavity between the upper and lower baffles 40, and finally flows into the filter cartridge 1 through the drain hole 17 opened at the lower end of the mounting shell 14, and finally is discharged from the drain port 3 below the filter cartridge 1. During the filtration process, water is continuously flowing into the water inlet end of the cartridge cover 2. That is, for these three mounting shells 14, when the water above their upper baffles 40 is full, the water newly flowing in from the water inlet end of the cartridge cover 2 can ensure that enough new water flows in through the water inlet hole, thus ensuring that the corresponding one-way valve 35 is opened.

[0044] The mounting shell 14 corresponding to the water outlet area 34 in the present invention is the last mounting shell 14 through which water flows. The water filtered by the PP filter cotton 16 in the mounting shell 14 is the water finally filtered out of the first-level filtration, and the water can be used as the source water required for the subsequent second-level filtration; this part of the water will flow into the water storage chamber 45 below the mounting shell 14 corresponding to the water outlet area 34. Because the fifth water hole 44 opened on the water storage chamber 45 below the mounting shell 14 is connected to the sixth water hole 47 opened on the water purification switch 15, the water entering the water storage chamber 45 will pass through the fifth water hole 44 and the sixth water hole 47 on the water purification switch 15 and flow into the clean water concentration chamber 13 below the filter cartridge 1, and finally be discharged from the filtered water outlet 4 opened on the clean water concentration chamber 13 and flow into the second-level filter cartridge 1.

[0045] In the present invention, when the water diversion shell 9 rotates, the water diversion shell 9 will drive the water purification switch 15 to rotate through the cooperation of the plug block 19 installed on its lower bottom surface and the socket 46 above the water purification switch 15, and the angle of rotation of the water purification switch 15 each time is the same as the angle of rotation of the water diversion shell 9.

[0046] like Figure 11 、 12 As shown, the third water hole 42 has symmetrically distributed concave conical surfaces 29 on the hole wall at the upper and lower ends; the one-way valve 35 includes a valve plug 36, a second spring 37, a fixing ring 38, and a connecting block 39, wherein the valve plug is an annular structure with an outer conical surface, and the valve plug is slidably installed in the third water hole 42, as shown in FIG. Figure 9 、 10 As shown, the PP filter cotton 16 passes through the center of the valve plug and is in close contact with the inner ring surface of the valve plug; the outer conical surface of the valve plug cooperates with the inner concave conical surface 29 on the upper side of the third water hole 42. When the outer conical surface of the valve plug is in close contact with the corresponding inner concave conical surface 29, the third water hole 42 is closed, and the water entering from the upper end of the mounting shell 14 can only seep downward from the PP filter cotton 16; Figure 11 、 12 As shown, the fixing ring 38 is fixedly installed in the third water hole 42 through three circumferentially evenly distributed connecting blocks 39. A second spring 37 is fixedly installed between the fixing ring 38 and the valve plug 36. The second spring 37 is a compression spring with preload.

[0047] In the present invention, the PP filter cotton 16 and the inner annular surface of the valve plug are slidably matched and the two are in close contact. This design ensures that the valve plug can slide up and down smoothly relative to the PP filter cotton 16 while also ensuring the sealing of the center of the valve plug. That is, when the valve plug is pressed and moves downward, the pressure on the valve plug will not be affected by the gap between the central annular surface of the valve plug and the PP filter cotton 16.

[0048] The function of the third spring is to reset the valve plug.

[0049] After the valve plug is pressurized, the valve plug will move downward relative to the third water hole 42, and the outer conical surface of the valve plug will gradually move away from the inner concave conical surface 29 on the upper inner side of the third water hole 42, that is, a gap will appear between the outer conical surface of the valve plug and the inner concave conical surface 29 on the upper inner side of the third water hole 42. The water in the mounting shell 14 above the upper partition 40 can be discharged downward from the gap, which has a flushing effect on the dirt on the PP filter cotton 16.

[0050] like Figure 5 As shown, the lower end surface of the cylinder cover 2 is provided with an inner concave annular groove 28 for plugging with the filter cylinder 1; 7 circumferentially evenly distributed limiting modules 11 are fixedly installed on the inner wall surface of the cylinder cover 2, as shown in FIG. Figure 6 As shown, the limiting module 11 includes a limiting housing 21, a first spring 22, and a limiting block 23, wherein one end of the limiting housing 21 is an open end, as shown in FIG. Figure 5 、 6 As shown, the other end of the limit shell 21 is fixedly mounted on the inner wall of the cylinder cover 2, one end of the limit block 23 is slidably mounted in the limit shell 21, and a first spring 22 is fixedly mounted between the limit block 23 and the inner end surface of the limit shell 21; the other end of the limit block 23 is provided with a bevel 24.

[0051] When the guide cylinder 25 rotates, when the block 26 on the guide cylinder 25 contacts the inclined surface 24 of the limit block 23, the guide cylinder 25 drives the block 26 to rotate, which causes the block 26 to squeeze the limit block 23. Under the action of the inclined surface 24, the limit block 23 moves inward relative to the limit housing 21, and the first spring 22 is compressed.

[0052] like Figure 7 As shown, a water diversion shell 9 is rotatably installed in the cylinder cover 2, and a plurality of first water holes 18 communicating with each other inside and outside are opened on the bottom surface of the water diversion shell 9. The area where the first water holes 18 are located on the bottom surface of the water diversion shell 9 is fan-shaped, and the size and shape of this area are completely equal to the fan-shaped surface of the upper end surface of the single mounting shell 14; a circular hole communicating with each other inside and outside is opened on the upper end of the water diversion shell 9, and a connecting convex ring 27 with an inner groove is installed upward at the circular hole; a guide cylinder 25 is fixedly installed on the upper end surface of the water diversion shell 9, and the upper end of the guide cylinder 25 is rotatably connected to the cylinder cover 2; a clamping block 26 is fixedly installed on the outer wall surface of the guide cylinder 25, and the clamping block 26 cooperates with the limit block 23; as shown Figure 5 As shown, when the water diversion shell 9 rotates relative to the cylinder cover 2, the block 26 on the guide cylinder 25 rotates toward the inclined surface 24 of the limit block 23; Figure 2 、 4 As shown, the lower end of the water diversion shell 9 is evenly fixed with a plurality of plug-in blocks 19 that correspond to the slots opened on the upper end surface of the water purification switch 15 and can be plugged into each other; Figure 5As shown, the upper end of the cylinder cover 2 is the water inlet end, and a mounting sleeve 20 is rotatably installed on the inner side of the water inlet end. A sealing ring 6 is installed between the mounting sleeve 20 and the inner wall surface of the water inlet end of the cylinder cover 2, and the lower end of the mounting sleeve 20 can be plugged into the inner groove on the connecting convex ring 27; a spiral piece 5 is fixedly installed on the inner side of the mounting sleeve 20; a fixed shell 8 is fixedly installed on the outer wall surface of the lower end of the mounting sleeve 20, and the fixed shell 8 is an annular shell and the outer wall surface of the fixed shell 8 is open; a volute spring 12 is fixedly installed between the inner ring wall of the fixed shell 8 and the guide cylinder 25; a switch control ring 10 is fixedly installed on the lower end of the water diversion shell 9; Figure 8 As shown, the inner circumference of the switch control ring 10 is provided with three drainage channels 31, and each drainage channel 31 has two second water holes 30 at both ends thereof; the outer ring wall of the switch control ring 10 is in close contact with the inner arc surface of the seven mounting shells 14; Figure 9 As shown, when in use, the first water hole 18 at the lower end of the drainage shell is opposite to the mounting shell 14, and the water inlet 41 and the water outlet 32 opened thereon are both sealed by the outer ring wall of the switch control ring 10. The upper end of the mounting shell 14 is the water inlet area 33. The water flowing into the mounting shell 14 can only seep downward from the PP cotton installed in the mounting shell 14 or squeeze open the one-way valve 35 in the mounting shell 14 and flow down from the corresponding third water hole 42; looking down from above, with the rotation direction of the spiral sheet 5 as the positive direction, the mounting shell 14 on the lower side of the water inlet area 33 is set as No. 1 mounting shell 14, and the remaining six mounting shells 14 are No. 2 mounting shell 14, No. 3 mounting shell 14, No. 4 mounting shell 14, and No. 5 mounting shell 14. The area corresponding to the No. 5 mounting shell 14, the No. 6 mounting shell 14 and the No. 7 mounting shell 14 is the water outlet area 34; the six second water holes 30 opened on the switch control ring 10 correspond to the water outlet hole on the No. 2 mounting shell 14, the water inlet hole on the No. 3 mounting shell 14, the water outlet hole on the No. 4 mounting shell 14, the water inlet hole on the No. 5 mounting shell 14, the water outlet hole on the No. 6 mounting shell 14, and the water inlet hole on the No. 7 mounting shell 14, that is, the water outlet hole of the No. 2 mounting shell 14 is connected to the water inlet hole of the No. 3 mounting shell 14, the water outlet hole of the No. 4 mounting shell 14 is connected to the water inlet hole of the No. 5 mounting shell 14, and the water outlet hole of the No. 6 mounting shell 14 is connected to the water inlet hole of the No. 7 mounting shell 14; as Figure 13 As shown, the fifth water hole 44 at the lower end of the No. 7 mounting shell 14 cooperates with the sixth water hole 47 opened on the water purification switch 15.

[0053] In the present invention, the area where the first water hole 18 is located on the bottom surface of the water diversion shell 9 is fan-shaped, and the size and shape of this area are exactly equal to the fan-shaped surface of the upper end surface of a single mounting shell 14; during filtering, this area is directly opposite the mounting shell 14 corresponding to the water inlet area 33. Such a design can ensure that, during filtering, the water in the water diversion shell 9 can only flow into the mounting shell 14 corresponding to the water inlet area 33, and will not flow into other mounting shells 14, resulting in a reduction in the number of times it is filtered, affecting the filtering effect.

[0054] When impurities or dirt such as mud and sand carried in the water pass through the PP filter cotton 16, they will be filtered by the PP filter cotton 16 and remain on the outside of the PP filter cotton 16. The filtered water will seep backward through the PP filter cotton 16 and be filtered by the PP filter cotton 16 behind it. That is, the further back the PP filter cotton 16 contacts the water, the less dirt it filters; the further back the PP filter cotton 16 contacts the water, the less likely it is to get dirty, and the smaller its filtering effect on the water. In order to ensure that each PP filter cotton 16 can fully play a filtering role, the present invention ensures that the PP filter cotton 16 installed in each installation shell 14 can be fully utilized by changing the position of the water inlet area 33 during the filtering process.

[0055] In the present invention, when the water inlet area 33 is replaced, the water inlet end and the water outlet end of the PP filter cotton 16 will also change accordingly, that is, the number of times the PP filter cotton 16 seeps from top to bottom and the number of times it seeps from bottom to top are basically the same. This design further improves the utilization rate of the PP filter cotton 16.

[0056] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

[0057] Implementation method: When using the filter cartridge 1 designed by the present invention, the filter cartridge 1 is installed on the filter to control the water inlet of the filter. Water enters from the water inlet end of the cartridge cover 2 and passes through the spiral blade 5 and then flows into the water inlet shell 9. The water in the water inlet shell 9 flows from top to bottom into the installation shell 14 corresponding to the water inlet area 33, that is, the No. 1 installation shell 14. Part of the water flowing into the No. 1 installation shell 14 will be filtered by the corresponding PP filter cotton 16 and then seep downward, while the other part of the water will remain in the No. 1 installation shell 14 and be stored above the upper partition 40. After the water above the upper partition 40 is full, new water will continue to be injected to increase the water volume above the upper partition 40. When the volume remains unchanged, the increase in water volume will increase the water pressure. The water above the upper partition 40 will squeeze the valve plug 36 in the one-way valve 35, causing the valve plug 36 to move downward and the second spring 37 to compress; the valve plug 36 moves downward to open the third water hole 42, and the water above the upper partition 40 flows downward from the third water hole 42 into the cavity between the upper partition 40 and the lower partition 40, and at the same time flushes the PP filter cotton 16. The water flowing into the cavity between the upper partition 40 and the lower partition 40 finally flows into the filter cartridge 1 from the drain hole 17 opened at the lower end of the No. 1 mounting shell 14, and finally is discharged from the drain port 3 below the filter cartridge 1; the water seeping from the PP filter cotton 16 will flow into the water storage chamber 45 on the lower side. After the water storage chamber 45 is full, it continues to store water. The one-way pressure valve installed in the seventh water hole 49 will be opened, so that the water in the water storage chamber 45 will flow into the water storage chamber 45 of the No. 2 installation shell 14. After the water in the water storage chamber 45 of the No. 2 installation shell 14 is full, it will seep upward along the PP filter cotton 16 installed in the No. 2 installation shell 14, and finally flow out from above the partition 40 on the upper layer of the No. 2 installation shell 14. Because the water outlet hole opened at the upper end of the No. 2 installation shell 14 is opened and the water inlet hole is closed, and the inlet hole opened at the upper end of the No. 3 installation shell 14 is opened and the water outlet hole is closed, the water flowing into the upper part of the No. 2 installation shell 14 will flow into the No. 3 installation shell 14 from the water outlet hole and the drainage channel 31 opened on the switch control ring 10. The water flowing into the No. 3 installation shell 14 will be completely discharged. Part of the water seeps downward from the PP filter cotton 16 installed in the No. 3 installation shell 14, and the other part flows into the lower side of the upper partition 40 from the third water hole 42; it is filtered in sequence until the last water flows out from the lower end of the PP filter cotton 16 in the installation shell 14 corresponding to the No. 7 installation shell 14 of the water outlet area 34. Because the fifth water hole 44 opened on the water storage chamber 45 below the No. 7 installation shell 14 is connected to the sixth water hole 47 opened on the water purification switch 15, the water entering the water storage chamber 45 will pass through the fifth water hole 44 and the sixth water hole 47 on the water purification switch 15 and flow into the clean water concentration chamber 13 below the filter cartridge 1, and finally be discharged from the filtered water outlet 4 opened on the clean water concentration chamber 13 and flow into the secondary filter cartridge 1.

[0058] When the clamping block 26 passes over the limit block 23, under the action of the volute spring 12, the guide cylinder 25 will rotate relative to the mounting sleeve 20, and the rotation of the guide cylinder 25 drives the clamping block 26 to rotate, so that the clamping block 26 contacts the next limit block 23 and is limited by the next limit block 23. Rotation of the guide cylinder 25 drives the water diversion housing 9. Each rotation of the guide cylinder 25 ensures that the first water hole 18 at the lower end of the water diversion housing 9 rotates from directly above one mounting housing 14 to directly above another mounting housing 14. Rotation of the water diversion housing 9, through the engagement of the insert 19 with the socket 46, drives the water purification switch 15 to rotate. The rotation angle allows the sixth water hole 47 at the lower end of the water purification switch 15 to rotate from the fifth water hole 44 on one mounting housing 14 to the fifth water hole 44 on the adjacent mounting housing 14. Rotation of the water diversion housing 9 drives the switch control ring 10 to rotate. The rotation angle ensures that, after rotation, the water inlet and outlet openings of the mounting housing 14 located below the water inlet area 33 are sealed. The water inlet and outlet openings of the remaining six mounting housings 14 mate with the second water hole 30 on the switch control ring 10. In other words, each rotation of the water diversion housing 9 forms a new water inlet area 33 and outlet area 34.

Claims

1. A component used in a water purifier, characterized in that: It includes a filter cartridge, a cartridge cover, and PP filter cotton. A sewage outlet is opened at the center of the lower end surface of the filter cartridge. The lower end of the filter cartridge has a purified water concentration chamber, and the outer wall surface of the purified water concentration chamber has a filtered water outlet. A purified water switch is rotatably installed on the inner side of the filter cartridge. Seven mounting shells are evenly fixedly installed on the inner circumference of the filter cartridge. When all the mounting shells are combined, they can form a complete cartridge body. For each installation shell, there are two partitions installed in it, the upper partition is provided with a plurality of evenly spaced third water holes that penetrate up and down, and the lower partition is provided with a plurality of fourth water holes that penetrate up and down and have stepped surfaces, and the fourth water holes correspond to the third water holes one by one; a water storage cavity is formed between the lower partition and the inner bottom surface of the corresponding installation shell, and a fifth water hole is provided on the outer wall of the water storage cavity; the rotating water purification switch can control whether the fifth water hole on the installation shell is connected to the filtered water outlet of the filter cartridge; the inner arc surface of the installation shell is provided with a drainage hole. The sewage hole, water outlet hole and water inlet hole are located on the upper side of the lower partition and close to the lower partition, and the water outlet hole and water inlet hole are located on the upper side of the upper partition; a seventh water hole is opened between the water storage chambers on the lower sides of two adjacent mounting shells, and a one-way pressure valve is installed in the seventh water hole; a plurality of rod-shaped PP filter cottons are evenly and detachably installed in the mounting shell, the lower end of the PP filter cotton is inserted into the fourth water hole, and the upper end of the PP filter cotton is inserted into the third water hole and flush with the upper partition; each of the third water holes is installed with a one-way valve; A water diversion shell is rotatably mounted in the cylinder cover, and a first water hole is formed on the bottom surface of the water diversion shell. The area where the first water hole is located on the bottom surface of the water diversion shell is fan-shaped, and the size and shape of this area are exactly equal to the fan-shaped surface of the upper end surface of the single mounting shell; the upper end of the cylinder cover is the water inlet end, and a mounting sleeve is rotatably mounted on the inner side of the water inlet end, and a spiral piece is fixedly mounted on the inner side of the mounting sleeve; the rotation of the mounting sleeve can intermittently drive the water diversion shell to rotate; the lower end of the water diversion shell is fixedly mounted with a switch control ring that can control whether the water inlet hole and the water outlet hole at the upper end of the mounting shell are connected or not; The water purification switch is a cylindrical structure. The upper end surface of the water purification switch is axially uniformly provided with a plurality of square jacks. The lower end of the water purification switch is provided with an annular groove, which is connected to the water purification concentration cavity at the lower end of the filter cartridge. The wall surface of the annular groove is provided with a sixth water hole that penetrates the water purification switch. The sixth water hole cooperates with the fifth water hole provided at the lower end of the mounting shell. The lower end of the water inlet shell is evenly fixed with a plurality of plugs that match the square sockets on the upper end of the water purification switch. Three drainage channels are opened in the circumferential direction of the inner side of the switch control ring, and each drainage channel has two second water holes at both ends thereof; the outer ring wall of the switch control ring is in close contact with the inner arc surface of the seven mounting shells; when in use, the mounting shell facing the first water hole at the lower end of the drainage shell has its water inlet and water outlet sealed by the outer ring wall of the switch control ring, and the upper end of the mounting shell is the water inlet area. The water flowing into the mounting shell can only seep downward from the PP cotton installed in the mounting shell or squeeze open the one-way valve in the mounting shell to flow down from the corresponding third water hole.

2. The component used in a water purifier according to claim 1, characterized in that: The mounting shell is a strip structure with a fan-shaped cross section; The third water hole has symmetrically distributed concave conical surfaces on the hole walls at the upper and lower ends; The one-way valve includes a valve plug, a second spring, a fixing ring, and a connecting block, wherein the valve plug is an annular structure with an outer conical surface, and the valve plug is slidably installed in the third water hole, and the PP filter cotton passes through the center of the valve plug and is in close contact with the inner ring surface of the valve plug; the outer conical surface of the valve plug cooperates with the inner concave conical surface on the upper side of the third water hole. When the outer conical surface of the valve plug is tightly fitted with the corresponding concave conical surface, the third water hole is closed, and water entering from the upper end of the mounting shell can only seep downward from the PP filter cotton; the fixing ring is fixedly installed in the third water hole by three circumferentially evenly distributed connecting blocks, and a second spring is fixedly installed between the fixing ring and the valve plug, and the second spring is a compression spring with preload.

3. The component used in a water purifier according to claim 1, characterized in that: The lower end surface of the cylinder cover is provided with an inner concave annular groove for plugging and matching with the filter cylinder; seven circumferentially evenly distributed limit modules are fixedly installed on the inner wall surface of the cylinder cover; A guide cylinder is fixedly installed on the upper end surface of the water diversion shell, and the upper end of the guide cylinder is rotatably connected to the cylinder cover; a clamping block is fixedly installed on the outer wall surface of the guide cylinder, and the clamping block cooperates with the limit module; a fixed shell is fixedly installed on the outer wall surface of the lower end of the mounting sleeve, and the fixed shell is an annular shell and the outer wall surface of the fixed shell is open; a volute spring is fixedly installed between the inner ring wall of the fixed shell and the guide cylinder.

4. The component used in a water purifier according to claim 3, characterized in that: The limit module includes a limit shell, a first spring, and a limit block, wherein one end of the limit shell is an open end, the other end of the limit shell is fixedly installed on the inner wall of the cylinder cover, one end of the limit block is slidably installed in the limit shell, and the first spring is fixedly installed between the limit block and the inner end surface of the limit shell; the other end of the limit block is provided with an inclined surface; when the water diversion shell rotates relative to the cylinder cover, the block on the guide cylinder rotates toward the inclined surface of the limit block.

5. The component used in a water purifier according to claim 1, characterized in that: A circular hole communicating with the inside and outside is opened on the upper end of the water induction shell, and a connecting convex ring with an inner groove is installed upwardly at the circular hole.

6. The component used in a water purifier according to claim 1, characterized in that: A sealing ring is installed between the installation sleeve and the inner wall surface of the water inlet end of the cylinder cover.

7. The component used in a water purifier according to claim 1, characterized in that: Looking down from above, with the rotation direction of the spiral blade as the positive direction, the mounting shell on the lower side of the water inlet area is set as mounting shell No. 1, and the remaining six mounting shells are mounting shell No. 2, mounting shell No. 3, mounting shell No. 4, mounting shell No. 5, mounting shell No. 6 and mounting shell No. 7 in sequence. The area corresponding to mounting shell No. 7 is the water outlet area; the six second water holes opened on the switch control ring correspond to the water outlet hole on mounting shell No. 2, the water inlet hole on mounting shell No. 3, the water outlet hole on mounting shell No. 4, the water inlet hole on mounting shell No. 5, the water outlet hole on mounting shell No. 6, and the water inlet hole on mounting shell No. 7, respectively, that is, the water outlet hole of mounting shell No. 2 is connected to the water inlet hole of mounting shell No. 3, the water outlet hole of mounting shell No. 4 is connected to the water inlet hole of mounting shell No. 5, and the water outlet hole of mounting shell No. 6 is connected to the water inlet hole of mounting shell No. 7; the fifth water hole at the lower end of mounting shell No. 7 cooperates with the sixth water hole opened on the water purification switch.

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