CN113511705B

CN113511705B - Reverse osmosis filter core and water purifier

Info

Publication number: CN113511705B
Application number: CN202110356866.6A
Authority: CN
Inventors: 胡月; 余子义; 孔子慧
Original assignee: Guangdong Daomeng Intelligent Technology Co ltd
Current assignee: Guangdong Daomeng Intelligent Technology Co ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2022-07-05
Anticipated expiration: 2041-04-01
Also published as: CN113511705A

Abstract

The invention belongs to the technical field of water purifiers, and particularly relates to a reverse osmosis filter element and a water purifier, which comprise a filter element, a filter base, a filter cylinder, a filter cover and a controller; the filter base is rotatably connected to the lower end of the filter cylinder, and the upper end of the filter base is provided with a filter element; according to the water purifier, the multi-section electric push rod can extrude water in the flow guide pipe to flow out of the filter element through the arrangement of the multi-section electric push rod, so that bacteria and mineral metal particles blocked by the filter element can be carried to the surface of the filter layer by the water flowing out of the flow guide pipe under extrusion, and the second section rod of the multi-section electric push rod can push water in the concave block to wash the surface of the filter layer, so that the bacteria and the mineral metal particles on the surface of the filter layer are separated, on one hand, the bacteria are prevented from corroding the filter layer, the service life of the filter element is prolonged, on the other hand, the bacteria and the mineral metal particles are prevented from being accumulated on the surface of the filter layer to cause the blockage of the filter element, and the filtering rate of the water purifier is improved.

Description

Reverse osmosis filter core and water purifier

Technical Field

The invention belongs to the technical field of water purifiers, and particularly relates to a reverse osmosis filter element and a water purifier.

Background

The water purifier is a water dispenser that carries out depth filtration and disinfection with the running water, promote the safety and the quality of straight drinking water through using different filtering material, so water purifier one promotes to each area, thereby drinking water safety and the drinking water quality of the people have been improved to a great extent, among the prior art, the inside filter core of water purifier is because long-time use, make the filter core surface pile up there are bacterium and mineral substance metal granule, thereby cause the jam of filter core, influence the filtration rate of purifier to the running water, the bacterium is piled up on the filter core surface and is accelerated the corruption to the filter core, make the water purifying effect of purifier constantly weaken.

Some technical solutions related to a filter element and a water purifier also appear in the prior art, for example, a chinese patent with application number CN201811069521.7 discloses a filter element and a water purifier, including: a center piece; the side wall of the water inlet pipe is provided with a plurality of raw water outlet holes, at least one end of the water inlet pipe forms a raw water inlet, and the plurality of water inlet pipes are arranged around the central piece to form a central pipe group; the filter element groups are provided with a plurality of filter element groups, the filter element sheets in the filter element groups penetrate between the central piece and the water inlet pipe and are rolled around the central pipe group to form a water inlet flow passage and a water production flow passage; the filter element group also comprises a water inlet grid arranged in each water inlet flow channel, the starting side of the water inlet grid is connected with the installation outer wall of the water inlet pipe, and the installation outer wall is the side wall of the water inlet pipe far away from the central piece, so that the purpose of accelerating the rolling of the filter element is realized; but this technical scheme can't avoid because the inside filter core of water purifier uses for a long time, makes the filter core surface pile up there are bacterium and mineral substance metal particle, thereby causes the jam of filter core, influences the filtration rate of purifier to the running water, and the bacterium is piled up on the filter core surface and is accelerated to the corruption of filter core, makes the water purification effect of purifier constantly weaken, and then causes this technical scheme's limitation.

In view of this, in order to overcome the above technical problems, the present invention provides a reverse osmosis filter element and a water purifier, which solve the above technical problems.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a reverse osmosis filter element and a water purifier, wherein the water purifier provided by the invention has the advantages that through the arrangement of a plurality of sections of electric push rods, the electric push rods can extrude water in a flow guide pipe to flow out of the filter element, so that bacteria and mineral metal particles blocked by the filter element can be extruded by the flow guide pipe to flow out of the filter element, the water flowing out of the flow guide pipe can be carried to the surface of a filter layer, and a second section of the electric push rods can push water in a concave block to wash the surface of the filter layer, so that the bacteria and the mineral metal particles on the surface of the filter layer are separated, on one hand, the bacteria are prevented from corroding the filter layer, the service life of the filter element is prolonged, on the other hand, the bacteria and the mineral metal particles are prevented from accumulating on the surface of the filter layer, the filter element is prevented from being blocked, and the filtering rate of the water purifier is increased.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a water purifier, which comprises a filter element, a filter base, a filter cylinder, a filter cover and a controller, wherein the filter base is arranged on the filter element; the filter base is rotatably connected to the lower end of the filter cylinder, and the upper end of the filter base is provided with a filter element; the filter element is positioned in the filter cylinder, a concave block is arranged above the filter element, and the filter element comprises a filter layer and a flow guide pipe; the outer wall of the guide pipe is provided with uniformly distributed permeation holes; the concave block is fixedly connected with the filter cylinder, and the bottom end of the concave block is provided with a through hole; the through hole is positioned in the center of the bottom end of the concave block and is communicated with the flow guide pipe; the bottom end of the concave block is provided with an inclined hole; the inclined hole is positioned at the edge of the concave block, a first check valve is arranged in the inclined hole, and one end of the inclined hole, which is close to the filter element, faces the surface of the filter layer; a water outlet hole is formed in the side wall of the concave block; the water outlet hole is positioned above the filter cylinder; the upper end of the concave block is rotatably connected with a filter cover; a first annular groove is formed in the inner side wall of the filter cover; the first annular groove is opposite to the water outlet hole; a water purifying opening is formed in the outer side wall of the filter cover; the water purifying port is communicated with the first annular groove; the bottom end of the filter cover is fixedly connected with a multi-section electric push rod; the multi-section electric push rod is opposite to the through hole, and a pressing plate is sleeved on the multi-section electric push rod; the pressing plate is in sliding contact with the side wall of the concave block, and a first magnet is arranged at the upper end of the pressing plate; a second magnet is arranged at the bottom end of a second section of the multi-section electric push rod; the first magnet is opposite to the second magnet; the side wall of the filter cylinder is provided with a water inlet and a water outlet; the controller controls the water purifier to automatically operate;

in the prior art, bacteria and mineral metal particles are accumulated on the surface of a filter element in a water purifier due to long-time use of the filter element, so that the filter element is blocked, the filtration rate of the water purifier on tap water is influenced, the bacteria are accumulated on the surface of the filter element and accelerate corrosion to the filter element, and the water purification effect of the water purifier is continuously weakened;

when the water purifier works, a worker controls the water purifier to be started through the controller, at the moment, the controller controls the multi-section electric push rod to ascend, the multi-section electric push rod drives the pressing plate to ascend through attraction between the first magnet and the second magnet, when the bottom end of the first section rod of the multi-section electric push rod is positioned above the through hole, the pressing plate is positioned above the water outlet hole, the controller controls the water inlet to be opened, the water outlet hole is closed, tap water continuously enters from the water inlet to fill the filter cylinder, the one-way valve is arranged in the inclined hole to prevent the tap water in the filter cylinder from entering the concave block, the tap water in the filter cylinder can pass through the filter layer of the filter element under the action of pressure, and filtered water flow can enter the inner part of the flow guide pipe through the permeation hole under the continuous filtering of the filter layer, and bacteria and mineral metal particles in the tap water can be prevented from being blocked on the surface of the filter element by the filter layer, as the amount of the water filtered in the guide pipe increases, the water filtered in the guide pipe flows into the concave block from the through hole and then flows out from the water outlet hole on the side wall of the concave block, and the filtered water passes through the first annular groove and finally flows out from the water purifying port; after the work is finished, the controller controls the water purifying port and the water inlet to be closed, the water outlet is opened at the moment, residual wastewater in the filter cartridge flows out from the water outlet, the water purifying port is closed, the guide pipe is filled with water, the concave block is in a pressure stabilizing state at the moment, the filtered water in the concave block cannot flow out from the one-way valve, the controller controls the multi-section electric push rod to descend, the first section of rod of the multi-section electric push rod can enter the through hole and continuously go deep into the guide pipe, the first section of rod of the multi-section electric push rod can push the water in the guide pipe to flow out towards the surface of the filter element, so that the filtered water can be separated from bacteria and mineral metal particles attached to the surface of the filter layer when the filtered water in the guide pipe flows out, the second section of rod of the electric push rod can push the pressing plate to press the water in the concave block, the water in the concave block is sprayed out from the inclined hole through the one-way valve, and the inclined hole faces towards the surface of the filter layer close to the filter element, therefore, water in the concave block is sprayed to the surface of a filter layer of the filter element from the inclined hole, when the second section of rod of the multi-section electric push rod pushes the pressure plate to be contacted with the bottom of the concave block, the lower end of the first section of rod of the multi-section electric push rod is contacted with the upper end of the filter base, and at the moment, the controller controls the multi-section electric push rod to stop; when the filter element needs to be replaced, a user rotates the filter base to enable the filter base to drive the filter element to rotate, when the filter base is separated from the bottom of the filter cylinder, the filter element is separated from the bottom end of the concave block in a rotating mode, then the filter element needing to be replaced on the filter base is removed in a rotating mode, a new filter element is installed, the filter element extends into the filter cylinder, and the filter base is rotated to enable the filter base to drive the filter element to rotate simultaneously, so that the filter element is installed on the concave block;

according to the invention, through the arrangement of the multiple sections of electric push rods, the multiple sections of electric push rods can extrude water in the flow guide pipe to flow out of the filter element, so that bacteria and mineral metal particles blocked by the filter element can be carried away to the surface of the filter layer by the water extruded from the flow guide pipe, and the second section of rod of the multiple sections of electric push rods can push water in the concave block to wash the surface of the filter layer, so that the bacteria and mineral metal particles on the surface of the filter layer are separated, on one hand, the bacteria are prevented from corroding the filter layer, the service life of the filter element is prolonged, on the other hand, the bacteria and mineral metal particles are prevented from accumulating on the surface of the filter layer to cause the blockage of the filter element, and the filtering rate of the water purifier is improved.

Preferably, the bottom end of the concave block is rotatably connected with a ring sleeve; the cross section of the ring sleeve is L-shaped, and the inner wall of the ring sleeve is attached to the through hole; the guide pipe is rotatably connected with the ring sleeve; a thread groove is arranged in the ring sleeve; the bottom end of the first section rod of the multi-section electric push rod is fixedly connected with a screw rod; the upper end of the filter base is rotatably provided with a rotating block; the upper end of the rotating block is provided with a first sliding groove; the guide pipe is connected in the first sliding groove in a sliding manner; the section shape of the flow guide pipe is consistent with that of the first sliding chute; when the multi-section electric push rod pushes the lead screw to be in contact with the bottom of the first sliding chute, the multi-section electric push rod stops, and the ring sleeve stops rotating; when the filter element rotates, water in the concave block can flush the rotating filter element, the flushing area of the filter element and the flushing force of water flow on the filter element are increased, the flow speed of the water in the flow guide pipe is accelerated along with the rotation of the filter element, and the impact force of the water flow on bacteria and mineral metal particles blocked by the filter layer is increased; according to the invention, the ring sleeve is matched with the lead screw through the arrangement of the ring sleeve, so that the multi-section electric push rod pushes the lead screw to extend downwards, the lead screw can push the ring sleeve to drive the filter element to rotate, on one hand, the filter element rotates, so that the washing area of water in the concave block to the filter element is increased, the washing force is enhanced, the cleaning effect on the surface of the filter element is improved, the service life of the filter element is prolonged, on the other hand, the bacteria and mineral metal particles are separated from the surface of the filter layer under the action of centrifugal force due to the rotation of the filter element, the attachment of the bacteria and mineral metal particles on the surface of the filter element is reduced, and the filtering rate of the water purifier to tap water is further improved.

Preferably, the upper end of the filter base is provided with a first groove; a sliding plate is connected in the first groove in a sliding manner; the rotating block is rotatably connected in the sliding plate; the sliding plate is circular, the cross section of the sliding plate is consistent with that of the first groove, and a first spring is arranged between the sliding plate and the bottom of the first groove; one end of the first spring is fixedly connected with the sliding plate, and the other end of the first spring is fixedly connected with the bottom of the first groove; two sides of the first groove are provided with a second sliding groove; a limiting block is connected in the second sliding groove in a sliding manner; the limiting block is as high as the sliding plate and is fixedly connected with the sliding plate; when the filter element needs to be replaced, a user rotates the filter base to enable the first groove and the second sliding groove on the filter base to rotate, the limiting block is blocked by the second sliding groove, the limiting block can drive the sliding plate to rotate along with the filter base under the pushing of the side wall of the second sliding groove, the bottom end of the lead screw is in contact with the bottom end of the first sliding groove due to the fact that the multi-section electric push rod pushes the lead screw, the ring sleeve is in threaded connection with the lead screw and cannot rotate, the filter element and the rotating block cannot rotate along with the ring sleeve, when the filter base is separated from the rotating bottom of the filter cylinder, the rotating block pulls the sliding plate to enable the sliding plate to stretch the first spring and extend out of the first groove until the stretched elastic force of the first spring is larger than the static friction force between the guide pipe and the groove wall of the first sliding groove, the first spring restores to drive the sliding plate to be close to the groove bottom of the first groove, and pulls the rotating block to move downwards at the moment, so that the guide pipe slides along the groove wall of the first sliding groove towards the direction far away from the groove, when the filter base is completely separated from the filter cylinder, the flow guide pipe extends out of the first sliding groove, and because the ring sleeve and the lead screw are in a clamping state of threaded connection, the filter element to be replaced is rotated, the filter element is rotated off from the ring sleeve, a new filter element is rotated up, the filter base is aligned with the filter cylinder at the moment, the flow guide pipe is aligned with the first sliding groove, the filter base is rotated upwards, the filter base is in threaded connection with the filter cylinder, the filter base drives the sliding plate to rise, the flow guide pipe pushes the sliding plate to extrude the first spring at the moment, and when the elastic force of the first spring after being extruded is larger than the static friction force between the flow guide pipe and the wall of the first sliding groove, the first spring pushes the sliding plate to drive the rotating block to rise, so that the flow guide pipe slides into the first sliding groove; the slide plate can replace and use filter elements with different lengths by stretching or compressing the first spring, so that the practicability of the slide plate is improved.

Preferably, a pressure sensor is installed at the bottom of the first sliding chute; an arc-shaped plate is arranged above the pressure sensor; the arc-shaped plate is made of silica gel materials, the arc-shaped plate is fixedly connected with the side wall of the first sliding chute, and the concave surface of the arc-shaped plate faces the pressure sensor; when the multi-section electric push rod is contacted with the arc-shaped plate, the multi-section electric push rod pushes the screw rod to move downwards, so that the arc-shaped plate deforms, the arc-shaped plate is contacted with the pressure sensor, the pressure sensor transmits an electric signal to the controller, and the controller controls the multi-section electric push rod to stop operating; when the filter element works, water flow of the flow guide pipe can be diffused to the outside of the filter element under the pushing of the multi-section electric push rod, and water in the flow guide pipe is pushed by the multi-section electric push rod, so that the arc-shaped plate is pushed by the water in the flow guide pipe to generate thrust, the arc-shaped plate is deformed and sunken towards the direction of the pressure sensor, but the thrust of the water flow is limited, the deformed arc-shaped plate is not contacted with the pressure sensor until the screw rod is contacted with the arc-shaped plate, and the screw rod pushes the deformed arc-shaped plate to deform again and sunken towards the direction of the pressure sensor until the arc-shaped plate is contacted with the pressure sensor; the pressure sensor sends an electric signal to the controller, so that the controller controls the multi-section electric push rod to stop.

Preferably, one surface of the filter base, which is close to the filter element, is a curved surface, and the upper end of the filter base is provided with a second annular groove; the second annular groove is positioned at the edge of the filter base and is communicated with the water outlet; when the multi-section electric push rod pushes the purified water in the guide pipe to be discharged, the discharged purified water can flow into the second annular groove along the curved surface of the filter base and flow out of the water outlet; after the work, the controller control water purification mouth of a river and the water inlet are closed, the delivery port is opened this moment, surplus waste water flows from the delivery port in straining a section of thick bamboo, the controller control multisection electric putter extends downwards for multisection electric putter promotes the surplus water and clears up the filter core, make bacterium and mineral substance metal particle that the filter core blockked by surplus rivers along the surface layer flow of filter core to strain the seat upper end, will strain remaining bacterium and mineral substance metal particle of seat upper end and wash out No. two ring channels to, flow from the delivery port along No. two ring channels at last.

A filter element is suitable for the water purifier and comprises a filter layer and a flow guide pipe; the filter layer is internally provided with a chute; the chute is connected with an antibacterial activated carbon rod in a sliding manner; a third spring is arranged between the bacteriostatic activated carbon rod and the outer wall of the flow guide pipe; one end of the third spring is fixedly connected with the bacteriostatic activated carbon rod, and the other end of the third spring is fixedly connected with the flow guide pipe; one end of the chute, which is far away from the flow guide pipe, is provided with a second check valve; when the filter works, the multi-section electric push rod pushes the screw rod to extend downwards, so that the ring sleeve drives the filter element to rotate, the bacteriostatic activated carbon rod in the chute continuously stretches the third spring under the action of centrifugal force and slides towards the direction of the second check valve, so that part of water flow in the flow guide pipe flows into a space between the bacteriostatic activated carbon rod and the flow guide pipe, and the filter layer is formed by winding a reverse osmosis membrane on the flow guide pipe and filters tap water layer by layer, so that bacteria and mineral metal particles are easily stored between two adjacent layers of reverse osmosis membranes; under the push of the multi-section electric push rod, one part of water flow can push a part with smaller volume in bacteria and mineral metal particles blocked by the filter layer to pass through the filter layer to the outermost surface of the filter layer, the other part of water flow can push a part with larger volume in the bacteria and mineral metal particles blocked by the filter element to flow downwards from between two adjacent filter layers until reaching the chute, as the bacteriostatic activated carbon rod can inhibit the bacteria from attaching and breeding, the water flow flowing into the chute can bring the bacteria away from the second one-way valve along the bacteriostatic activated carbon rod, when the filter element stops rotating, the third spring restores to pull the bacteriostatic activated carbon rod to be far away from the second one-way valve, and the filtered water between the bacteriostatic activated carbon rod and the guide pipe is extruded by the bacteriostatic activated carbon rod, one part of the filtered water flows into the filter layer close to the guide pipe, so that the filtered water cleans the filter layer close to the guide pipe again, the other part flows out of the second check valve along the bacteriostatic activated carbon rod and washes the surface of the bacteriostatic activated carbon rod, the second check valve blocks tap water from entering the chute in the process of filtering the tap water, and the water filtered by the filter layer enters the chute and is filtered again by the bacteriostatic activated carbon rod; according to the invention, through the arrangement of the inclined groove and the bacteriostatic activated carbon rod, bacteria and mineral metal particles between the filter layers can flow into the inclined groove and flow out along the bacteriostatic activated carbon rod, so that the bacteria and mineral metal particles between the filter layers are prevented from being remained and accumulated, the cleaning effect of filtered water on the filter layers is improved, the corrosion of bacteria on the filter layers of the filter elements is reduced, the service life of the filter elements is prolonged, and the bacteriostatic activated carbon rod can re-filter filtered tap water, so that the water quality is improved.

The invention has the following beneficial effects:

1. according to the water purifier, the multi-section electric push rod can extrude water in the flow guide pipe to flow out of the filter element through the arrangement of the multi-section electric push rod, so that bacteria and mineral metal particles blocked by the filter element can be carried to the surface of the filter layer by the water flowing out of the flow guide pipe under extrusion, and the second section rod of the multi-section electric push rod can push water in the concave block to wash the surface of the filter layer, so that the bacteria and the mineral metal particles on the surface of the filter layer are separated, on one hand, the bacteria are prevented from corroding the filter layer, the service life of the filter element is prolonged, on the other hand, the bacteria and the mineral metal particles are prevented from being accumulated on the surface of the filter layer to cause the blockage of the filter element, and the filtering rate of the water purifier is improved.

2. According to the water purifier, the ring sleeve is matched with the lead screw through the arrangement of the ring sleeve, so that in the process that the multi-section electric push rod lead screw extends downwards, the lead screw can push the ring sleeve to drive the filter element to rotate, on one hand, the filter element rotates, the washing area of water in the concave block to the filter element is increased, the washing force is enhanced, the cleaning effect on the surface of the filter element is improved, the service life of the filter element is prolonged, on the other hand, bacteria and mineral metal particles are separated from the surface of the filter layer under the action of centrifugal force due to the rotation of the filter element, the adhesion of the bacteria and the mineral metal particles on the surface of the filter element is reduced, and the filtering rate of the water purifier to tap water is further improved.

3. According to the reverse osmosis filter element, the bacteria and mineral metal particles between the filter layers can flow into the chute and flow out along the antibacterial activated carbon rod through the arrangement of the chute and the antibacterial activated carbon rod, so that the bacteria and mineral metal particles between the filter layers are prevented from being remained and accumulated, the cleaning effect of filtered water on the filter layers is improved, the corrosion of the bacteria on the filter layers of the filter element is reduced, the service life of the filter element is prolonged, and the antibacterial activated carbon rod can filter filtered tap water again, so that the water quality is improved.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of a water purifier according to the present invention;

FIG. 2 is a schematic view showing the construction of a water purifier according to the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

in the figure: 1. a filter element; 11. a filter layer; 111. a chute; 112. bacteriostatic active carbon rods; 113. a third spring; 114. a second one-way valve; 12. a flow guide pipe; 2. a filter base; 21. rotating the block; 22. a first chute; 23. a first groove; 231. a second chute; 232. a limiting block; 24. a slide plate; 25. a first spring; 26. a second annular groove; 3. a filter cartridge; 4. a filter cover; 41. a first annular groove; 42. purifying a water gap; 43. a multi-section electric push rod; 431. a magnet II; 44. pressing a plate; 441. a first magnet; 5. a concave block; 51. a through hole; 52. an inclined hole; 53. a first check valve; 54. a water outlet hole; 55. sleeving a ring; 56. a lead screw; 6. a pressure sensor; 7. an arc-shaped plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 3, a water purifier according to the present invention includes a filter element 1, a filter base 2, a filter cartridge 3, a filter cover 4, and a controller; the filter base 2 is rotatably connected to the lower end of the filter cylinder 3, and the upper end of the filter base 2 is provided with a filter element 1; the filter element 1 is positioned in the filter cylinder 3, a concave block 5 is arranged above the filter element 1, and the filter element 1 comprises a filter layer 11 and a flow guide pipe 12; the outer wall of the draft tube 12 is provided with uniformly arranged permeation holes; the concave block 5 is fixedly connected with the filter cylinder 3, and the bottom end of the concave block 5 is provided with a through hole 51; the through hole 51 is positioned in the center of the bottom end of the concave block 5, and the through hole 51 is communicated with the draft tube 12; the bottom end of the concave block 5 is provided with an inclined hole 52; the inclined hole 52 is positioned at the edge of the concave block 5, a first check valve 53 is arranged in the inclined hole 52, and one end of the inclined hole 52 close to the filter element 1 faces the surface of the filter layer 11; a water outlet hole 54 is formed in the side wall of the concave block 5; the water outlet 54 is positioned above the filter cartridge 3; the upper end of the concave block 5 is rotatably connected with a filter cover 4; a first annular groove 41 is formed in the inner side wall of the filter cover 4; the first annular groove 41 is opposite to the water outlet hole 54; a water purifying port 42 is formed on the outer side wall of the filter cover 4; the water purifying port 42 is communicated with the first annular groove 41; the bottom end of the filter cover 4 is fixedly connected with a multi-section electric push rod 43; the multi-section electric push rod 43 is opposite to the through hole 51, and a pressing plate 44 is sleeved on the multi-section electric push rod 43; the pressing plate 44 is in sliding contact with the side wall of the concave block 5, and a first magnet 441 is arranged at the upper end of the pressing plate 44; a second magnet 431 is arranged at the bottom end of a second section of the multi-section electric push rod 43; the first magnet 441 is opposite to the second magnet 431; a water inlet and a water outlet are formed in the side wall of the filter cartridge 3; the controller controls the water purifier to automatically operate;

in the prior art, bacteria and mineral metal particles are accumulated on the surface of a filter element 1 because the filter element 1 in a water purifier is used for a long time, so that the filter element 1 is blocked, the filtering rate of the water purifier on tap water is influenced, the bacteria are accumulated on the surface of the filter element 1 and accelerate the corrosion on the filter element 1, and the water purifying effect of the water purifier is continuously weakened;

when the water purifier works, a worker controls the water purifier to be started through the controller, at the moment, the controller controls the multi-section electric push rod 43 to ascend, the multi-section electric push rod 43 drives the pressing plate 44 to ascend through attraction between the first magnet 441 and the second magnet 431, when the bottom end of the first section rod of the multi-section electric push rod 43 is positioned above the through hole 51, the pressing plate 44 is positioned above the water outlet hole 54, the controller controls the water inlet to be opened, the water outlet is in a closed state, tap water continuously enters from the water inlet to fill the filter cartridge 3, the one-way valve 53 is arranged in the inclined hole 52 to prevent the tap water in the filter cartridge 3 from entering the concave block 5, at the moment, the tap water in the filter cartridge 3 passes through the filter layer 11 of the filter element 1 under the effect of pressure, filtered water can enter the inside of the guide pipe 12 through the permeation hole under the continuous filtering of the filter layer 11, and bacteria and mineral metal particles in the tap water can be prevented from being blocked on the surface of the filter element 1 by the filter layer 11, as the amount of the filtered water in the guide pipe 12 increases, the filtered water in the guide pipe 12 flows into the concave block 5 from the through hole 51 and then flows out from the water outlet hole 54 on the side wall of the concave block 5, and at the moment, the filtered water flows out from the water purifying port 42 through the first annular groove 41; after the work is finished, the controller controls the water purifying port 42 and the water inlet to be closed, the water outlet is opened at the moment, the residual wastewater in the filter cartridge 3 flows out from the water outlet, because the water purifying port 42 is closed and the guide pipe 12 is filled with water, at the moment, the interior of the concave block 5 is in a pressure stabilizing state, the filtered water in the concave block 5 cannot flow out from the one-way valve 53, at the moment, the controller controls the multi-section electric push rod 43 to descend, the first section rod of the multi-section electric push rod 43 can enter the through hole 51 and continuously go deep into the guide pipe 12, so that the first section rod of the multi-section electric push rod 43 can push the water in the guide pipe 12 to flow out to the surface of the filter element 1, when the filtered purified water in the guide pipe 12 flows out, the filtered purified water can take away bacteria and mineral metal particles attached to the surface of the filter layer 11, the second section rod of the electric push rod can push the pressure plate 44 to press the water in the concave block 5, so that the water in the concave block 5 can be sprayed out from the inclined hole 52 through the one-way valve 53, because the inclined hole 52 faces to the surface of the filter layer 11 of the filter element 1 towards one end close to the filter element 1, water in the concave block 5 is sprayed to the surface of the filter layer 11 of the filter element 1 from the inclined hole 52, when the second section of rod of the multi-section electric push rod 43 pushes the pressure plate 44 to be contacted with the bottom of the concave block 5, the lower end of the first section of rod of the multi-section electric push rod 43 is contacted with the upper end of the filter base 2, and at the moment, the controller controls the multi-section electric push rod 43 to stop; when the filter element 1 needs to be replaced, a user rotates the filter base 2, so that the filter base 2 drives the filter element 1 to rotate, when the filter base 2 is separated from the bottom of the filter cylinder 3, the filter element 1 is separated from the bottom end of the concave block 5 in a rotating mode, then the filter element 1 needing to be replaced on the filter base 2 is taken down in a rotating mode, a new filter element 1 is installed, the filter element 1 extends into the filter cylinder 3, the filter base 2 is rotated, the filter base 2 drives the filter element 1 to rotate simultaneously, and therefore the filter element 1 is installed on the concave block 5;

according to the invention, through the arrangement of the plurality of sections of electric push rods 43, the plurality of sections of electric push rods 43 can extrude water in the draft tube 12 to flow out of the filter element 1, so that bacteria and mineral metal particles blocked by the filter element 1 can be carried away to the surface of the filter layer 11 by the water extruded from the draft tube 12, and the second section of the plurality of sections of electric push rods 43 can push the water in the concave block 5 to wash the surface of the filter layer 11, so that the bacteria and mineral metal particles on the surface of the filter layer 11 are separated, on one hand, the bacteria are prevented from corroding the filter layer 11, the service life of the filter element 1 is prolonged, on the other hand, the bacteria and mineral metal particles are prevented from accumulating on the surface of the filter layer 11 to cause the blockage of the filter element 1, and the filtering rate of the water purifier is improved.

Preferably, the bottom end of the concave block 5 is rotatably connected with a ring sleeve 55; the cross section of the ring sleeve 55 is L-shaped, and the inner wall of the ring sleeve 55 is attached to the through hole 51; the draft tube 12 is rotatably connected with the ring sleeve 55; a thread groove is arranged in the ring sleeve 55; the bottom end of the first section of the multi-section electric push rod 43 is fixedly connected with a screw rod 56; the upper end of the filter base 2 is rotatably provided with a rotating block 21; the upper end of the rotating block 21 is provided with a first sliding groove 22; the draft tube 12 is connected in the first sliding chute 22 in a sliding manner; the section shape of the draft tube 12 is consistent with that of the first sliding chute 22; when the filter element 1 rotates, the filter element 1 can drive the rotating block 21 to rotate on the filter base 2, when the multi-section electric push rod 43 pushes the lead screw 56 to be in contact with the bottom of the first sliding groove 22, the multi-section electric push rod 43 stops at the moment, and the ring sleeve 55 stops rotating; when the filter element 1 rotates, water in the concave block 5 can wash the rotating filter element 1, the washing area of the filter element 1 and the washing force of water flow on the filter element 1 are increased, along with the rotation of the filter element 1, the flow velocity of the water in the flow guide pipe 12 is accelerated, and the impact force of the water flow on bacteria and mineral metal particles blocked by the filter layer 11 is increased; according to the invention, through the arrangement of the ring sleeve 55, the ring sleeve 55 is matched with the lead screw 56, so that the multi-section electric push rod 43 pushes the lead screw 56 to extend downwards, and the lead screw 56 can push the ring sleeve 55 to drive the filter element 1 to rotate, on one hand, the filter element 1 rotates, so that the washing area of water in the concave block 5 to the filter element 1 is increased, the washing force is increased, the cleaning effect on the surface of the filter element 1 is improved, the service life of the filter element 1 is prolonged, on the other hand, bacteria and mineral metal particles are separated from the surface of the filter layer 11 under the action of centrifugal force due to the rotation of the filter element 1, the adhesion of bacteria and mineral metal particles on the surface of the filter element 1 is reduced, and the filtering rate of the water purifier to tap water is further improved.

Preferably, the upper end of the filter base 2 is provided with a first groove 23; a sliding plate 24 is slidably connected in the first groove 23; the rotating block 21 is rotatably connected in the sliding plate 24; the sliding plate 24 is circular, the cross section of the sliding plate 24 is consistent with that of the first groove 23, and a first spring 25 is arranged between the sliding plate 24 and the bottom of the first groove 23; one end of the first spring 25 is fixedly connected with the sliding plate 24, and the other end of the first spring is fixedly connected with the bottom of the first groove 23; a second sliding groove 231 is formed in the two sides of the first groove 23; a limiting block 232 is slidably connected in the second sliding groove 231; the height of the limiting block 232 is the same as that of the sliding plate 24, and the limiting block 232 is fixedly connected with the sliding plate 24; when the filter element 1 needs to be replaced, a user rotates the filter base 2 to enable the first groove 23 and the second sliding groove 231 on the filter base 2 to rotate, because the limiting block 232 is blocked by the second sliding groove 231, the limiting block 232 can drive the sliding plate 24 to rotate along with the filter base 2 under the pushing of the side wall of the second sliding groove 231, because the multi-section electric push rod 43 pushes the lead screw 56, the bottom end of the lead screw 56 is contacted with the bottom end of the first sliding groove 22, the ring sleeve 55 is in threaded connection with the lead screw 56 and cannot rotate, the filter element 1 and the rotating block 21 cannot rotate along with the ring sleeve 55, when the filter base 2 is separated from the rotating bottom of the filter cartridge 3, the rotating block 21 pulls the sliding plate 24, so that the sliding plate 24 stretches the first spring 25 and stretches out of the first groove 23, and when the stretched elastic force of the first spring 25 is greater than the static force between the guide pipe 12 and the groove wall of the first sliding groove 22, the first spring 25 recovers to drive the sliding plate 24 to be close to the bottom of the first groove 23, at the moment, the sliding plate 24 pulls the rotating block 21 to move downwards, so that the flow guide tube 12 slides along the wall of the first sliding groove 22 towards the direction of the groove bottom far away from the first sliding groove 22, when the filter base 2 is completely separated from the filter cartridge 3, the flow guide tube 12 extends out of the first sliding groove 22, because the ring sleeve 55 and the lead screw 56 are in a clamping state of threaded connection, the filter core 1 needing to be replaced is rotated, the filter core 1 rotates down from the ring sleeve 55, then a new filter core 1 rotates up, at the moment, the filter base 2 is aligned with the filter cartridge 3, the flow guide tube 12 is aligned with the first sliding groove 22, the filter base 2 is rotated upwards, the filter base 2 is in threaded connection with the filter cartridge 3, the filter base 2 drives the sliding plate 24 to ascend, at the moment, the flow guide tube 12 pushes the sliding plate 24 to extrude the first spring 25, and when the extrusion elastic force of the first spring 25 is greater than the static friction force between the flow guide tube 12 and the wall of the first sliding groove 22, the first spring 25 pushes the sliding plate 24, so that the slide plate 24 drives the rotating block 21 to ascend, and the guide pipe 12 slides into the first sliding groove 22; the slide plate 24 can realize replacement of filter elements 1 with different lengths by stretching or compressing the first spring 25, and the practicability of the invention is improved.

Preferably, the bottom of the first sliding chute 22 is provided with a pressure sensor 6; an arc-shaped plate 7 is arranged above the pressure sensor 6; the arc-shaped plate 7 is made of silica gel materials, the arc-shaped plate 7 is fixedly connected with the side wall of the first sliding groove 22, and the concave surface of the arc-shaped plate 7 faces the pressure sensor 6; when the multi-section electric push rod 43 is in contact with the arc-shaped plate 7, the multi-section electric push rod 43 pushes the screw rod 56 to move downwards, so that the arc-shaped plate 7 deforms, the arc-shaped plate 7 is in contact with the pressure sensor 6, the pressure sensor 6 transmits an electric signal to the controller, and the controller controls the multi-section electric push rod 43 to stop running; when the filter core is in operation, water flow in the flow guide pipe 12 can be diffused to the outside of the filter core 1 under the pushing action of the multi-section electric push rod 43, and water in the flow guide pipe 12 is pushed by the multi-section electric push rod 43, so that the water in the flow guide pipe 12 generates thrust on the arc-shaped plate 7, the arc-shaped plate 7 is deformed and dented towards the direction of the pressure sensor 6, but the thrust of the water flow is limited, the deformed arc-shaped plate 7 is not contacted with the pressure sensor 6 until the screw 56 is contacted with the arc-shaped plate 7, and the screw 56 pushes the deformed arc-shaped plate 7 to be deformed again and dented towards the direction of the pressure sensor 6 until the arc-shaped plate 7 is contacted with the pressure sensor 6; the pressure sensor 6 sends an electric signal to the controller, so that the controller controls the multi-section electric push rod 43 to stop.

Preferably, one surface of the filter base 2 close to the filter element 1 is a curved surface, and the upper end of the filter base 2 is provided with a second annular groove 26; the second annular groove 26 is positioned at the edge of the filter base 2, and the second annular groove 26 is communicated with the water outlet; when the multi-section electric push rod 43 pushes the clean water in the draft tube 12 to be discharged, the discharged clean water can flow into the second annular groove 26 along the curved surface of the filter base 2 and flow out from the water outlet; after the work is finished, the controller controls the water purifying port 42 and the water inlet to be closed, the water outlet is opened at the moment, the residual wastewater in the filter cartridge 3 flows out from the water outlet, the controller controls the multi-section electric push rod 43 to extend downwards, so that the multi-section electric push rod 43 pushes the residual water to clean the filter element 1, bacteria and mineral metal particles blocked by the filter element 1 are enabled to flow to the upper end of the filter base 2 along the surface layer of the filter element 1 by the residual water flow, the residual bacteria and mineral metal particles on the upper end of the filter base 2 are flushed to the second annular groove 26, and finally the residual bacteria and mineral metal particles flow out from the water outlet along the second annular groove 26.

A filter element 1, the filter element 1 is suitable for the above water purifier, including the filter layer 11 and the draft tube 12; an inclined groove 111 is formed in the filter layer 11; the chute 111 is connected with a bacteriostatic activated carbon rod 112 in a sliding manner; a third spring 113 is arranged between the bacteriostatic activated carbon rod 112 and the outer wall of the draft tube 12; one end of the third spring 113 is fixedly connected with the bacteriostatic activated carbon rod 112, and the other end is fixedly connected with the draft tube 12; a second check valve 114 is arranged at one end of the chute 111 far away from the draft tube 12; when the filter works, the multi-section electric push rod 43 pushes the screw rod 56 to extend downwards, so that the ring sleeve 55 drives the filter element 1 to rotate, the bacteriostatic activated carbon rod 112 in the chute 111 continuously stretches the third spring 113 under the action of centrifugal force and slides towards the direction of the second check valve 114, so that part of water flow in the draft tube 12 flows between the bacteriostatic activated carbon rod 112 and the draft tube 12, and because the filter layer 11 is formed by winding a reverse osmosis membrane on the draft tube 12, the filter layer 11 is formed, and tap water is filtered layer by layer, so that bacteria and mineral metal particles are easily stored between two adjacent layers of reverse osmosis membranes; under the pushing of the multi-section electric push rod 43, a part of the water flow in the draft tube 12 can push a part with a smaller volume of the bacteria and mineral metal particles blocked by the filter layer 11 to pass through the filter layer 11 to the outermost surface of the filter layer 11, another part of the water flow can push a part with a larger volume of the bacteria and mineral metal particles blocked by the filter element 1 to flow downwards from between two adjacent filter layers 11 until reaching the chute 111, because the bacteriostatic activated carbon rod 112 can inhibit the bacteria from attaching and breeding, the water flow flowing into the chute 111 can carry the bacteria away from the No. two check valve 114 along the bacteriostatic activated carbon rod 112, when the filter element 1 stops rotating, the No. three spring 113 resumes to pull the bacteriostatic activated carbon rod 112 away from the No. two check valve 114, and the filtered water between the bacteriostatic activated carbon rod 112 and the draft tube 12 is squeezed by the bacteriostatic activated carbon rod 112, one part of the water flows into the filter layer 11 close to the draft tube 12, so that the filter layer 11 close to the draft tube 12 is cleaned again by the filtered water, the other part of the water flows out of the second check valve 114 along the bacteriostatic activated carbon rod 112 and washes the surface of the bacteriostatic activated carbon rod 112, in the process of filtering the tap water, the second check valve 114 prevents the tap water from entering the chute 111, and the water filtered by the filter layer 11 enters the chute 111 and is filtered again by the bacteriostatic activated carbon rod 112; according to the invention, through the arrangement of the inclined groove 111 and the bacteriostatic activated carbon rod 112, bacteria and mineral metal particles between the filter layers 11 can flow into the inclined groove 111 and flow out along the bacteriostatic activated carbon rod 112, so that the bacteria and mineral metal particles between the filter layers 11 are prevented from remaining and accumulating, the cleaning effect of filtered water on the filter layers 11 is improved, the corrosion of bacteria on the filter layers 11 of the filter element 1 is reduced, the service life of the filter element 1 is prolonged, and the bacteriostatic activated carbon rod 112 can re-filter filtered tap water, so that the water quality is improved.

When the water purifier works, a worker controls the water purifier to be started through the controller, at the moment, the controller controls the multi-section electric push rod 43 to ascend, the multi-section electric push rod 43 drives the pressing plate 44 to ascend through attraction between the first magnet 441 and the second magnet 431, when the bottom end of the first section rod of the multi-section electric push rod 43 is positioned above the through hole 51, the pressing plate 44 is positioned above the water outlet hole 54, the controller controls the water inlet to be opened, the water outlet is in a closed state, tap water continuously enters from the water inlet to fill the filter cartridge 3, the one-way valve 53 is arranged in the inclined hole 52 to prevent the tap water in the filter cartridge 3 from entering the concave block 5, at the moment, the tap water in the filter cartridge 3 passes through the filter layer 11 of the filter element 1 under the effect of pressure, filtered water can enter the inside of the guide pipe 12 through the permeation hole under the continuous filtering of the filter layer 11, and bacteria and mineral metal particles in the tap water can be prevented from being blocked on the surface of the filter element 1 by the filter layer 11, as the amount of the filtered water in the draft tube 12 increases, the filtered water in the draft tube 12 flows into the concave block 5 from the through hole 51 and then flows out from the water outlet hole 54 on the side wall of the concave block 5, and at the moment, the filtered water passes through the first annular groove 41 and finally flows out from the water purifying port 42; after the work is finished, the controller controls the water purifying port 42 and the water inlet to be closed, the water outlet is opened at the moment, the residual wastewater in the filter cartridge 3 flows out from the water outlet, because the water purifying port 42 is closed and the guide pipe 12 is filled with water, at the moment, the interior of the concave block 5 is in a pressure stabilizing state, the filtered water in the concave block 5 cannot flow out from the one-way valve 53, at the moment, the controller controls the multi-section electric push rod 43 to descend, the first section rod of the multi-section electric push rod 43 can enter the through hole 51 and continuously go deep into the guide pipe 12, so that the first section rod of the multi-section electric push rod 43 can push the water in the guide pipe 12 to flow out to the surface of the filter element 1, when the filtered purified water in the guide pipe 12 flows out, the filtered purified water can take away bacteria and mineral metal particles attached to the surface of the filter layer 11, the second section rod of the electric push rod can push the pressure plate 44 to press the water in the concave block 5, so that the water in the concave block 5 can be sprayed out from the inclined hole 52 through the one-way valve 53, because the inclined hole 52 faces to the surface of the filter layer 11 of the filter element 1 towards one end close to the filter element 1, water in the concave block 5 is sprayed to the surface of the filter layer 11 of the filter element 1 from the inclined hole 52, when the second section of rod of the multi-section electric push rod 43 pushes the pressure plate 44 to be contacted with the bottom of the concave block 5, the lower end of the first section of rod of the multi-section electric push rod 43 is contacted with the upper end of the filter base 2, and at the moment, the controller controls the multi-section electric push rod 43 to stop; when the filter element 1 needs to be replaced, a user rotates the filter base 2, so that the filter base 2 drives the filter element 1 to rotate, when the filter base 2 is separated from the bottom of the filter cylinder 3, the filter element 1 is separated from the bottom end of the concave block 5 in a rotating mode, then the filter element 1 needing to be replaced on the filter base 2 is taken down in a rotating mode, a new filter element 1 is installed, the filter element 1 extends into the filter cylinder 3, the filter base 2 is rotated, the filter base 2 drives the filter element 1 to rotate simultaneously, and therefore the filter element 1 is installed on the concave block 5; the controller controls the multi-section electric push rod 43 to extend downwards, so that the lead screw 56 can extend into the ring sleeve 55, the ring sleeve 55 and the lead screw 56 form a lead screw 56 nut pair, and the ring sleeve 55 can drive the lead screw 56 to move downwards along with the multi-section electric push rod 43, so that the ring sleeve 55 rotates along the central shaft of the lead screw 56, because the ring sleeve 55 is in threaded connection with the guide pipe 12, the rotating block 21 is rotatably connected with the filter base 2, in the rotating process of the ring sleeve 55, the ring sleeve 55 can drive the filter element 1 to rotate, so that when the filter element 1 rotates, the filter element 1 can drive the rotating block 21 to rotate on the filter base 2, and when the multi-section electric push rod 43 pushes the lead screw 56 to be in contact with the bottom of the first sliding groove 22, the multi-section electric push rod 43 stops at the moment, and the ring sleeve 55 stops rotating; when the filter element 1 rotates, water in the concave block 5 can wash the rotating filter element 1, the washing area of the filter element 1 and the washing force of water flow on the filter element 1 are increased, along with the rotation of the filter element 1, the flow velocity of the water in the flow guide pipe 12 is accelerated, and the impact force of the water flow on bacteria and mineral metal particles blocked by the filter layer 11 is increased; when the filter element 1 needs to be replaced, a user rotates the filter base 2 to enable the first groove 23 and the second sliding groove 231 on the filter base 2 to rotate, because the limiting block 232 is blocked by the second sliding groove 231, the limiting block 232 can drive the sliding plate 24 to rotate along with the filter base 2 under the pushing of the side wall of the second sliding groove 231, because the multi-section electric push rod 43 pushes the lead screw 56, the bottom end of the lead screw 56 is contacted with the bottom end of the first sliding groove 22, the ring sleeve 55 is in threaded connection with the lead screw 56 and cannot rotate, the filter element 1 and the rotating block 21 cannot rotate along with the ring sleeve 55, when the filter base 2 is separated from the rotating bottom of the filter cartridge 3, the rotating block 21 pulls the sliding plate 24, so that the sliding plate 24 stretches the first spring 25 and stretches out of the first groove 23, and when the stretched elastic force of the first spring 25 is greater than the static force between the guide pipe 12 and the groove wall of the first sliding groove 22, the first spring 25 recovers to drive the sliding plate 24 to be close to the bottom of the first groove 23, at the moment, the sliding plate 24 pulls the rotating block 21 to move downwards, so that the flow guide tube 12 slides along the wall of the first sliding groove 22 towards the direction of the groove bottom far away from the first sliding groove 22, when the filter base 2 is completely separated from the filter cartridge 3, the flow guide tube 12 extends out of the first sliding groove 22, because the ring sleeve 55 and the lead screw 56 are in a clamping state of threaded connection, the filter core 1 needing to be replaced is rotated, the filter core 1 rotates down from the ring sleeve 55, then a new filter core 1 rotates up, at the moment, the filter base 2 is aligned with the filter cartridge 3, the flow guide tube 12 is aligned with the first sliding groove 22, the filter base 2 is rotated upwards, the filter base 2 is in threaded connection with the filter cartridge 3, the filter base 2 drives the sliding plate 24 to ascend, at the moment, the flow guide tube 12 pushes the sliding plate 24 to extrude the first spring 25, and when the extrusion elastic force of the first spring 25 is greater than the static friction force between the flow guide tube 12 and the wall of the first sliding groove 22, the first spring 25 pushes the sliding plate 24, so that the slide plate 24 drives the rotating block 21 to rise, and the guide pipe 12 slides into the first sliding groove 22; the slide plate 24 can realize the replacement and use of filter elements 1 with different lengths by stretching or compressing the first spring 25; under the pushing of the multi-section electric push rod 43, the water flow of the draft tube 12 can be diffused to the outside of the filter element 1, and the water in the draft tube 12 is pushed by the multi-section electric push rod 43, so that the water in the draft tube 12 generates thrust on the arc-shaped plate 7, so that the arc-shaped plate 7 generates deformation and is sunken towards the direction of the pressure sensor 6, but the thrust of the water flow is limited, so that the deformed arc-shaped plate 7 is not contacted with the pressure sensor 6 until the screw rod 56 is contacted with the arc-shaped plate 7, and the screw rod 56 pushes the deformed arc-shaped plate 7 to generate deformation again and is sunken towards the direction of the pressure sensor 6 until the arc-shaped plate 7 is contacted with the pressure sensor 6; the pressure sensor 6 sends an electric signal to the controller, so that the controller controls the multi-section electric push rod 43 to stop; after the operation is finished, the controller controls the water purifying port 42 and the water inlet to be closed, the water outlet is opened at the moment, the residual wastewater in the filter cartridge 3 flows out from the water outlet, the controller controls the multi-section electric push rod 43 to extend downwards, so that the multi-section electric push rod 43 pushes the residual water to clean the filter element 1, bacteria and mineral metal particles blocked by the filter element 1 are enabled to flow to the upper end of the filter base 2 along the surface layer of the filter element 1 by the residual water flow, the bacteria and mineral metal particles remained at the upper end of the filter base 2 are washed to the second annular groove 26, and finally the bacteria and mineral metal particles flow out from the water outlet along the second annular groove 26; the multi-joint electric push rod 43 pushes the screw rod 56 to extend downwards, so that the ring sleeve 55 drives the filter element 1 to rotate, the bacteriostatic activated carbon rod 112 in the chute 111 continuously stretches the spring 113 in the third direction under the action of centrifugal force and slides towards the direction of the check valve 114 in the second direction, so that part of water flow in the draft tube 12 flows into the space between the bacteriostatic activated carbon rod 112 and the draft tube 12, and because the filter layer 11 is formed by winding a reverse osmosis membrane on the draft tube 12, the filter layer 11 is formed, tap water is filtered layer by layer, and bacteria and mineral metal particles are easily stored between two adjacent layers of reverse osmosis membranes; under the pushing of the multi-section electric push rod 43, a part of the water flow in the draft tube 12 can push a part with a smaller volume of the bacteria and mineral metal particles blocked by the filter layer 11 to pass through the filter layer 11 to the outermost surface of the filter layer 11, another part of the water flow can push a part with a larger volume of the bacteria and mineral metal particles blocked by the filter element 1 to flow downwards from between two adjacent filter layers 11 until reaching the chute 111, because the bacteriostatic activated carbon rod 112 can inhibit the bacteria from attaching and breeding, the water flow flowing into the chute 111 can carry the bacteria away from the No. two check valve 114 along the bacteriostatic activated carbon rod 112, when the filter element 1 stops rotating, the No. three spring 113 resumes to pull the bacteriostatic activated carbon rod 112 away from the No. two check valve 114, and the filtered water between the bacteriostatic activated carbon rod 112 and the draft tube 12 is squeezed by the bacteriostatic activated carbon rod 112, one part flows into the filter layer 11 close to the draft tube 12, so that the filter layer 11 close to the draft tube 12 is cleaned again by the filtered water, the other part flows out from the check valve 114 along the bacteriostatic activated carbon rod 112 and washes the surface of the bacteriostatic activated carbon rod 112, in the process of filtering tap water, the check valve 114 prevents the tap water from entering the chute 111, and the water filtered by the filter layer 11 enters the chute 111 and is filtered again by the bacteriostatic activated carbon rod 112.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a water purifier, includes filter core (1), strains seat (2), strains a section of thick bamboo (3), strains lid (4) and controller, its characterized in that: the filter base (2) is rotatably connected to the lower end of the filter cylinder (3), and the upper end of the filter base (2) is provided with a filter element (1); the filter element (1) is positioned in the filter cylinder (3), a concave block (5) is arranged above the filter element (1), and the filter element (1) comprises a filter layer (11) and a flow guide pipe (12); the outer wall of the draft tube (12) is provided with uniformly arranged permeation holes; the concave block (5) is fixedly connected with the filter cartridge (3), and the bottom end of the concave block (5) is provided with a through hole (51); the through hole (51) is positioned in the center of the bottom end of the concave block (5), and the through hole (51) is communicated with the flow guide pipe (12); the bottom end of the concave block (5) is provided with an inclined hole (52); the inclined hole (52) is positioned at the edge of the concave block (5), a one-way valve (53) is arranged in the inclined hole (52), and one end of the inclined hole (52) close to the filter element (1) faces to the surface of the filter layer (11); a water outlet hole (54) is formed in the side wall of the concave block (5); the water outlet hole (54) is positioned above the filter cylinder (3); the upper end of the concave block (5) is rotatably connected with a filter cover (4); a first annular groove (41) is formed in the inner side wall of the filter cover (4); the first annular groove (41) is opposite to the water outlet hole (54); a water purifying opening (42) is formed in the outer side wall of the filter cover (4); the water purifying port (42) is communicated with the first annular groove (41); the bottom end of the filter cover (4) is fixedly connected with a plurality of sections of electric push rods (43); the multi-section electric push rod (43) is opposite to the through hole (51), and a pressing plate (44) is sleeved on the multi-section electric push rod (43); the pressing plate (44) is in sliding contact with the side wall of the concave block (5), and a first magnet (441) is arranged at the upper end of the pressing plate (44); a second magnet (431) is arranged at the bottom end of a second section of the multi-section electric push rod (43); the first magnet (441) is opposite to the second magnet (431); a water inlet and a water outlet are formed in the side wall of the filter cartridge (3); the controller controls the water purifier to automatically operate;

the bottom end of the concave block (5) is rotatably connected with a ring sleeve (55); the cross section of the ring sleeve (55) is L-shaped, and the inner wall of the ring sleeve (55) is attached to the through hole (51); the draft tube (12) is rotatably connected with the ring sleeve (55); a thread groove is arranged in the ring sleeve (55); the bottom end of a first section rod of the multi-section electric push rod (43) is fixedly connected with a screw rod (56); the upper end of the filter base (2) is rotatably provided with a rotating block (21); the upper end of the rotating block (21) is provided with a first sliding groove (22); the draft tube (12) is connected in the first sliding groove (22) in a sliding manner; the section shape of the draft tube (12) is consistent with that of the first sliding chute (22).

2. The water purifier according to claim 1, wherein: the upper end of the filter base (2) is provided with a first groove (23); a sliding plate (24) is connected in the first groove (23) in a sliding manner; the rotating block (21) is rotatably connected in the sliding plate (24); the sliding plate (24) is circular, the cross section of the sliding plate (24) is consistent with that of the first groove (23), and a first spring (25) is arranged between the sliding plate (24) and the bottom of the first groove (23); one end of the first spring (25) is fixedly connected with the sliding plate (24), and the other end of the first spring is fixedly connected with the bottom of the first groove (23); two sides of the first groove (23) are provided with a second sliding groove (231); a limiting block (232) is connected in the second sliding groove (231) in a sliding manner; the height of the limiting block (232) is the same as that of the sliding plate (24), and the limiting block (232) is fixedly connected with the sliding plate (24).

3. A water purifier according to claim 2, characterized in that: a pressure sensor (6) is arranged at the bottom of the first sliding chute (22); an arc-shaped plate (7) is arranged above the pressure sensor (6); the arc-shaped plate (7) is made of silica gel materials, the arc-shaped plate (7) is fixedly connected with the side wall of the first sliding groove (22), and the concave surface of the arc-shaped plate (7) faces the pressure sensor (6); when the multi-section electric push rod (43) is in contact with the arc-shaped plate (7), the multi-section electric push rod (43) pushes the screw rod (56) to move downwards, so that the arc-shaped plate (7) deforms, the arc-shaped plate (7) is in contact with the pressure sensor (6), the pressure sensor (6) transmits an electric signal to the controller, and the controller controls the multi-section electric push rod (43) to stop running.

4. A water purifier according to claim 3, characterized in that: one surface of the filter base (2) close to the filter element (1) is a curved surface, and the upper end of the filter base (2) is provided with a second annular groove (26); the second annular groove (26) is positioned at the edge of the filter base (2), and the second annular groove (26) is communicated with the water outlet; when the multi-section electric push rod (43) extrudes the purified water in the draft tube (12) to discharge the purified water, the discharged purified water can flow into the second annular groove (26) along the curved surface of the filter base (2) and flow out from the water outlet.

5. A reverse osmosis filter core which is characterized in that: the reverse osmosis filter element (1) is suitable for a water purifier as claimed in any one of claims 1 to 4, and comprises a filter layer (11) and a flow guide pipe (12); an inclined groove (111) is formed in the filter layer (11); the chute (111) is connected with a bacteriostatic activated carbon rod (112) in a sliding way; a third spring (113) is arranged between the bacteriostatic activated carbon rod (112) and the outer wall of the draft tube (12); one end of the third spring (113) is fixedly connected with the bacteriostatic activated carbon rod (112), and the other end is fixedly connected with the draft tube (12); one end of the chute (111) far away from the draft tube (12) is provided with a second check valve (114).