Self-cleaning water purifier

Abstract

The invention relates to the technical field of water purifiers, in particular to a self-cleaning water purifier. Comprising a shell, a filtering station, a pre-cleaning station, a self-cleaning station and a maintenance station are sequentially arranged in the shell in the anticlockwise direction, an indexing frame rotating intermittently is arranged on the shell, a valve cylinder is rotationally connected to the shell, the indexing frame is fixedly connected with the valve cylinder, and four water purification mechanisms are arranged on the indexing frame in an array mode; the water purification mechanism comprises a vibration frame, a water purification barrel fixedly arranged on the indexing frame, and a main shaft and a rotating wheel which are rotationally connected to the indexing frame, an electric heating jacket is arranged on the water purification barrel, the vibration frame is in sliding connection with the water purification barrel, a spring is arranged between the vibration frame and the water purification barrel, and a filter element is rotationally connected to the vibration frame. The cleaning device has the beneficial effect that the problems that in the prior art, cleaning is not thorough and a blind area exists due to the fact that only single rotary scrubbing or high-pressure back flushing is relied on are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purifiers, in particular to a self-cleaning water purifier. BACKGROUND

[0002] With the increasing water pollution problem and the improvement of residents' health awareness, water purifiers have become an indispensable water treatment equipment in family and commercial scenes. As the core component of the water purifier, the filter core directly determines the water purification quality and use cost in terms of filtering efficiency and service life. However, there are still many technical problems to be solved in the long-term use of existing water purifiers. The specific problems are as follows:

[0003] The cleaning mechanism of the existing self-cleaning water purifier generally adopts a single motion mode, and does not form a collaborative cleaning logic of multi-dimensional motion coverage, precise stroke adaptation and pretreatment assistance, resulting in fundamental defects in filter core cleaning:

[0004] Firstly, the cleaning motion form is single, and most products only rely on fixed direction rotation of the brush shaft or high pressure water flow backwashing, lacking composite motion design. When the brush shaft rotates fixedly, the folds in the inner wall of the filter core, the different regions in the axial direction and the junctions between the support skeleton and the filtering functional layer are easy to form cleaning blind spots. High pressure backwashing is difficult to remove stubborn impurities that are firmly attached. After long-term accumulation, the impurities gradually solidify, not only continuously reducing the filtration flux, but also providing a breeding ground for bacteria and mold, seriously affecting the health and safety of drinking water.

[0005] Secondly, the cleaning stroke is fixed, and the stroke length of the existing few cleaning mechanisms with reciprocating motion is uniform, which cannot fully change and improve the shaking effect of filtering dirt through reciprocating stroke.

[0006] Thirdly, there is a lack of cleaning pretreatment link. The water remaining on the surface of the filter core after filtration will adsorb subsequent pollutants, aggravating impurity attachment. The existing technology does not design targeted pretreatment means for this problem, further reducing the self-cleaning effect.

[0007] Fourthly, the relative motion efficiency of the filter core and the cleaning component is low. In most products, the filter core and the brush shaft rotate in the same direction or have no relative rotation, the scraping speed is insufficient, and stubborn impurities cannot be effectively stripped.

[0008] Therefore, the present application provides a self-cleaning water purifier to solve the problems in the background art. SUMMARY

[0009] The present application provides a self-cleaning water purifier to solve the problems of incomplete self-cleaning of the filter core of the existing water purifier, existence of cleaning dead angle, easy breeding of bacteria and rapid clogging of the filter core, and short service life.

[0010] The technical scheme for solving the above technical problems is as follows: a self-cleaning water purifier comprises a shell, a filter station, a pre-cleaning station, a self-cleaning station and a maintenance station are sequentially arranged in the shell in a counterclockwise direction, a valve cylinder is rotationally connected to the shell and a intermittent rotation indexing frame is arranged on the shell, the indexing frame is fixedly connected with the valve cylinder, four water purifying mechanisms are arrayed on the indexing frame;

[0011] The water purifying mechanism comprises a vibration frame, a water purifying cylinder fixedly arranged on the indexing frame, a main shaft and a rotating wheel rotationally connected to the indexing frame, an electric heating jacket is arranged on the water purifying cylinder, the vibration frame is slidably connected with the water purifying cylinder and a spring is arranged between the vibration frame and the water purifying cylinder, a filter core is rotationally connected to the vibration frame, a brush shaft is rotationally connected to the vibration frame at the position of the axis of the filter core, the filter core, the rotating wheel and the brush shaft are linked with the main shaft, three protruding portions are arrayed on the rotating wheel in a circumferential direction, a driven wheel is rotationally connected to the vibration frame, the three protruding portions are alternately connected with the driven wheel and the driving stroke of the three protruding portions to the driven wheel is different, a channel is arranged in the brush shaft and internal through holes are arrayed on the brush shaft, the internal through holes are communicated with the channel, helical brush leaves are arranged on the brush shaft and abut against the filter core, an upper branch pipe is communicated with the upper portion of the water purifying cylinder, a lower branch pipe is communicated with the bottom end of the water purifying cylinder, and the other ends of the upper branch pipe and the lower branch pipe are communicated with the valve cylinder.

[0012] The transmission mechanism is configured to drive the main shaft to reciprocatingly and intermittently rotate at a first rotating speed in the filter station, to rotate in a forward direction at the first rotating speed in the pre-cleaning station and to rotate in a forward direction at a second rotating speed in the self-cleaning station.

[0013] The shell is communicated with upper flange pipes corresponding to the filter station, the pre-cleaning station and the self-cleaning station, the upper flange pipes are adapted to be communicated with the upper branch pipe, and the shell is communicated with lower flange pipes corresponding to the pre-cleaning station and the self-cleaning station, the lower flange pipes are communicated with the lower branch pipe.

[0014] The maintenance mechanism is configured to drive the maintenance liquid to be sprayed out through the internal through holes in the maintenance station.

[0015] On the basis of the above technical scheme, the present application can be further improved as follows.

[0016] As a preferred technical scheme of the present application, a first motor is arranged on the bottom of the shell, a first belt is drivingly connected to the output shaft of the first motor and drivingly connected with the indexing frame, a central control unit is arranged on the end surface of the shell, a temperature probe is arranged on the bottom of the water purifying cylinder, and the data end of the temperature probe is data-connected with the central control unit.

[0017] As the preferred technical scheme of the present application, the water purifying mechanism further comprises a square groove formed on the brush shaft, the square groove is open at the top and is in sliding connection with the main shaft, the cross sections of the main shaft and the square groove are regular hexagons, the first bevel gears are installed on the main shaft and the driven wheel, the two first bevel gears are in orthogonal engagement, the second bevel gears are installed on the filter core and the brush shaft, the synchronous shaft is rotatably connected to the water purifying cylinder, the synchronous bevel gear is installed on the synchronous shaft, the two second bevel gears are in transmission connection with the synchronous bevel gear, and the two second bevel gears are respectively arranged on the two sides of the synchronous bevel gear.

[0018] As the preferred technical scheme of the present application, the driving stroke of the three convex parts to the driven wheel is respectively 0.06 times, 0.075 times and 0.09 times of the length of the filter core, the positioning guide rail is installed on the top of the water purifying cylinder, the positioning guide rail is in sliding connection with the vibrating frame, and the outer through holes are arranged at the communication position of the water purifying cylinder and the upper branch pipe.

[0019] As the preferred technical scheme of the present application, the transmission mechanism comprises the second motor installed on the bottom of the shell, the central shaft is rotatably connected to the axis position of the indexing frame, the transmission gear ring is installed on the central shaft, the second belt is in transmission connection with the output shaft of the second motor and the central shaft, the reciprocating shaft is rotatably sleeved on the central shaft, the two auxiliary shafts are rotatably connected to the top of the shell, the third belt is in transmission connection with the top of the central shaft and the two auxiliary shafts, the transmission missing gears are installed on the two auxiliary shafts, the driven gear and the reciprocating gear ring are installed on the reciprocating shaft, the two transmission missing gears are alternately engaged with the driven gear, the upper gear and the lower gear are installed on the main shaft, the driving shafts are rotatably connected to the shell at positions corresponding to the filtering station, the pre-cleaning station and the self-cleaning station, the reciprocating gear engaged with the reciprocating gear ring is installed on the driving shaft in the filtering station, the rotating gears engaged with the transmission gear ring are installed on the driving shafts in the pre-cleaning station and the self-cleaning station, the low-speed ratio gears engaged with the lower gear are installed on the driving shafts in the filtering station and the pre-cleaning station, and the high-speed ratio gear engaged with the upper gear is installed on the driving shaft in the self-cleaning station.

[0020] As the preferred technical scheme of the present application, the radius of the transmission missing gear is 8-10 times of the radius of the driven gear, the central angle corresponding to the effective engagement section of the transmission missing gear is 120°, the central angle corresponding to the non-effective engagement section of the transmission missing gear is 240°, and the effective engagement sections of the two transmission missing gears are arranged with a 120° stagger.

[0021] As the preferred technical scheme of the present application, the transmission ratio of the low-speed ratio gear to the lower gear is 1:2, and the transmission ratio of the high-speed ratio gear to the upper gear is 1.8:1.

[0022] As the preferred technical scheme of the present application, the hot air cylinder is installed on the top of the shell, the electric heating wire is installed in the hot air cylinder, the air blowing fan blades are installed on the central shaft and correspond to the inner side of the hot air cylinder, the air blowing fan blades are arranged below the electric heating wire, the air outlet end of the hot air cylinder is communicated with the hot air delivery pipe, and the hot air delivery pipe is communicated with the upper flange pipe at the pre-cleaning station.

[0023] As the preferred technical scheme of the present application, the upper flange pipe at the filtering station is configured to be communicated with the clean water discharge pipe, the lower flange pipe at the station is configured to be communicated with the sewage inlet pipe, the lower flange pipes at the pre-cleaning station and the self-cleaning station are configured to be communicated with the sewage discharge pipe, and the upper flange pipe at the self-cleaning station is configured to be communicated with the clean water.

[0024] As the preferred technical scheme of the present application, the maintenance mechanism includes a maintenance box installed on the shell, the maintenance box is filled with maintenance liquid, the bottom of the maintenance box is communicated with a pump body, the pump body is communicated with the shell at a position corresponding to the maintenance station, the bottom of the upper branch pipe is communicated with a flow guide pipe, the bottom end of the brush shaft is provided with a sealing rubber ring connected with the flow guide pipe, and the other end of the flow guide pipe is communicated with a valve cylinder.

[0025] The present application has the following beneficial effects:

[0026] 1. The present application solves the problem of incomplete cleaning and existence of blind area caused by single rotary brush cleaning or high pressure back flushing in the prior art. Under the driving of the transmission mechanism, the main shaft drives the brush shaft to rotate and the filter core to rotate reversely through the bevel gear transmission synchronous belt, the spiral brush leaves and the inner wall of the filter core form high-efficiency relative scraping, the main shaft drives the rotating wheel to rotate, the three protruding parts alternately engage the driven wheel, the vibration frame is driven to slide back and forth along the positioning guide rail, and the spring provides elastic return force. The combined motion of the brush shaft rotation scraping, the vibration frame reciprocating displacement and the filter core reverse synchronous rotation, together with the high-pressure water flow sprayed from the through hole in the brush shaft, can accurately cover the traditional cleaning blind area such as the folds on the inner wall of the filter core, the different regions in the axial direction and the junction of the support framework and the filtering functional layer, and can strip the stubborn impurities firmly adhered. Compared with the single motion mode in the prior art, the cleaning efficiency is significantly improved, and there is no impurity solidification residue, which eliminates the breeding ground for bacteria and mold from the root.

[0027] 2. In the present application, the transmission mechanism drives the main shaft to rotate back and forth at a first rotating speed at the filtering station, to rotate forward at the first rotating speed at the pre-cleaning station and to rotate forward at a second rotating speed at the self-cleaning station through the precise cooperation of the transmission missing gear and the high-low speed ratio gear. The linkage design of stroke adaptation and rotating speed control not only ensures the cleaning intensity of the seriously polluted area, but also avoids excessive cleaning of the filter core. Compared with the existing fixed stroke and fixed rotating speed design, the balance between cleaning effect and filter core protection is achieved, and the service life of the filter core is significantly prolonged.

[0028] 3、The prior art lacks cleaning pretreatment, and water residues on the surface of the filter element are easy to adsorb subsequent pollutants, which aggravates the attachment of impurities. The present application fills this gap through the cooperative design of pretreatment and self-cleaning stations. In the pre-cleaning station, the center shaft rotates to link the air blowing fan blades to generate airflow, which is heated by the electric heating wire to form 120℃ hot air. The hot air is delivered to the filter element through the hot air delivery pipe, and the electric heating jacket on the water purification cylinder is heated to 100℃ at the same time, forming a double pretreatment environment of hot air blowing and cylinder wall heating. This design can quickly dry the residual water on the surface of the filter element, break the adsorption bonding force between impurities and the surface of the filter element, and assist in the decomposition of part of the organic impurities, creating a dry and residue-free precondition for the high-pressure water washing in the self-cleaning station, greatly improving the subsequent cleaning efficiency. Compared with the existing technology which directly cleans, the pretreatment link of the present application does not exist independently, but is precisely connected with the self-cleaning station through the center shaft linkage air blowing fan blades, hot air delivery pipe and pre-cleaning station flange pipe, realizing the process cooperation with the self-cleaning station. The creativity lies in the construction of the connection logic between pretreatment and deep cleaning, which reduces the difficulty of impurity attachment from the source.

[0029] 4、In view of the problem that the prior art only focuses on cleaning and ignores long-term maintenance of the filter element, the present application constructs a whole-process linkage system of maintenance, filtration and cleaning. In the maintenance station, the pump body delivers the maintenance liquid to the brush shaft channel through the flow guide pipe and valve cylinder, and the liquid is evenly sprayed through the inner through hole and then solidified to form a porous and flexible membrane. This membrane forms a gradient filtration structure with the filter function layer of the filter element, which can assist in trapping small suspended particles, colloidal impurities and trace heavy metals, significantly improving the filtration precision. Moreover, this membrane layer can be completely stripped by the high-speed rotating spiral brush and high-pressure water washing in the self-cleaning station without residual blockage of the pores. At the same time, the intermittent automatic switching of the four stations is realized through the fixed connection of the indexing frame and the valve cylinder. The transmission mechanism, hot air system and maintenance mechanism form a cooperative linkage around the functions of each station, realizing the whole cycle management of preventing attachment during filtration, pretreatment during pre-cleaning, strong cleaning during self-cleaning and improving precision during maintenance. Compared with the existing design which only focuses on the cleaning link, the creativity of the present application lies in the deep integration of the maintenance function with the cleaning and filtration process. Through the design of the strippable maintenance membrane, the filtration precision is improved and maintenance residues are avoided, realizing the dual improvement of the service life of the filter element and the water quality. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a self-cleaning water purifier;

[0031] Figure 2 is Figure 1 is a structural schematic diagram from another perspective;

[0032] Figure 3 is Figure 2 is a cross-sectional structural schematic diagram;

[0033] Figure 4 isFigure 3 A magnified schematic diagram of the local structure at point A;

[0034] Figure 5 for Figure 3 A magnified schematic diagram of the local structure at point B;

[0035] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0036] Figure 7 This is a structural schematic diagram of the secondary shaft and the drive shaft;

[0037] Figure 8 for Figure 7 A magnified schematic diagram of the local structure at point D;

[0038] Figure 9 This is a schematic diagram of the reciprocating gear and the countershaft.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] 1. Housing; 2. Indexing frame; 3. Valve cylinder; 4. Vibration frame; 5. Water purification cylinder; 6. Main shaft; 7. Rotary wheel; 8. Heating jacket; 9. Spring; 10. Filter element; 11. Brush shaft; 12. Protrusion; 13. Driven wheel; 14. Inner through hole; 15. Spiral brush blade; 16. Upper branch pipe; 17. Lower branch pipe; 18. Upper flange pipe; 19. Lower flange pipe; 20. First motor; 21. Central control unit; 22. Temperature probe; 23. Synchronous shaft; 24. Positioning guide rail; 25. Second motor; 26. Central shaft; 27. Transmission gear ring; 28. Reciprocating shaft; 29. ​​Secondary shaft; 30. Transmission missing gear; 31. Driven gear; 32. Reciprocating gear ring; 33. Lower gear; 34. Drive shaft; 35. Reciprocating gear; 36. Rotary gear; 37. Low-speed ratio gear; 38. High-speed ratio gear; 39. Hot air duct; 40. Heating wire; 41. Blower fan blade; 42. Hot air delivery pipe; 43. Maintenance box; 44. Guide pipe; 45. External through hole; 46. Upper gear. Detailed Implementation

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0042] The present invention provides the following preferred embodiments, such as Figures 1-9 As shown, a self-cleaning water purifier includes a housing 1, which has a filtration station, a pre-cleaning station, a self-cleaning station and a maintenance station arranged in a counterclockwise direction. A valve cylinder 3 is rotatably connected to the housing 1 and an intermittently rotating indexing frame 2 is provided. The indexing frame 2 is fixedly connected to the valve cylinder 3.

[0043] The rotating connection between the valve cylinder 3 and the shell 1 is provided with a plurality of sealing outer rings;

[0044] A first motor 20 is mounted at the bottom of the shell 1, and a first belt is drivingly connected to an output shaft of the first motor 20, and the first belt is drivingly connected to the indexing frame 2, and a central control unit 21 is mounted at an end face of the shell 1;

[0045] The first motor 20 drives the indexing frame 2 to realize intermittent rotation through the first belt, and cooperates with the sealing outer rings between the valve cylinder 3 and the shell 1, so that the automatic switching of the water purification mechanism between the four stations can be accurately completed;

[0046] The central control unit 21 is data-connected with a temperature probe 22, can realize real-time monitoring of the temperature in the water purification cylinder 5, provides data support for the working adjustment of the electric heating jacket 8, improves the automation degree and temperature control precision of the equipment operation, ensures the stability of the process conditions of each station, and guarantees the water purification and self-cleaning effects;

[0047] Four water purification mechanisms are arranged in an array on the indexing frame 2;

[0048] The water purification mechanism comprises a vibrating frame 4, a water purification cylinder 5 fixedly arranged on the indexing frame 2, a main shaft 6 and a rotating wheel 7 drivingly connected to the indexing frame 2, and the water purification cylinder 5 is provided with an electric heating jacket 8, and the bottom of the water purification cylinder 5 is provided with the temperature probe 22, and the data end of the temperature probe 22 is data-connected with the central control unit 21;

[0049] The vibrating frame 4 is slidingly connected with the water purification cylinder 5, and a spring 9 is arranged between the vibrating frame 4 and the water purification cylinder 5, and the top of the water purification cylinder 5 is provided with a positioning guide rail 24, and the positioning guide rail 24 is slidingly connected with the vibrating frame 4;

[0050] The vibrating frame 4 is drivingly connected with a filter core 10, and the bottom end of the filter core 10 is open and in a hollow cylindrical structure;

[0051] The lower part of the filter core 10 is provided with a sealing inner ring which is sealingly attached to the water purification cylinder 5;

[0052] In a preferred embodiment, the length of the filter core 10 is 500 mm, and the filter core 10 is a layered cylindrical structure, which comprises a support framework layer and a filtering function layer from outside to inside in sequence, and the filtering function layer is fixed to the inside of the support framework layer;

[0053] The support framework layer is a food-grade 304 stainless steel hollow cylindrical structure, and the side wall is uniformly provided with air guide holes with a diameter of 5 mm according to a spiral;

[0054] The filtering function layer is fixed by a folding and winding process, the folding interval is 8 mm, and a high-temperature-resistant PP material micro-flow guide rib with a height of 2 mm is arranged at the folding gap, the filtering function layer and the support framework layer are sealed by a temperature-resistant 200℃ silicon rubber sealing ring, and the filter core 10 is made of high-temperature-resistant PP material with a melting point ≥160℃;

[0055] A brush shaft 11 is rotatably connected to the axis of the filter element 10. The filter element 10, the rotating wheel 7 and the brush shaft 11 are all linked to the main shaft 6. Along the circumferential direction, three protrusions 12 are arranged in an array on the rotating wheel 7. A driven wheel 13 is rotatably connected to the vibration frame 4. The three protrusions 12 are alternately connected to the driven wheel 13 and the driving stroke of the three protrusions 12 on the driven wheel 13 is different.

[0056] In a preferred embodiment, the driving strokes of the three protrusions 12 to the driven wheel 13 are 0.06 times, 0.075 times, and 0.09 times the length of the filter element 10, respectively. Specifically, when the length of the filter element 10 is 500 mm, the driving strokes of the three protrusions 12 are 30 mm, 37.5 mm, and 45 mm, respectively.

[0057] When the main shaft 6 drives the rotating wheel 7 to rotate, the three protrusions 12 with different driving strokes alternately mesh with the driven wheel 13, driving the vibration frame 4 to slide back and forth along the positioning guide rail 24. The spring 9 provides elastic restoring force for the vibration frame 4, making the sliding of the vibration frame 4 more stable.

[0058] At the same time, the filter element 10 and the brush shaft 11 rotate in linkage, and the spiral brush blade 15 scrapes against the inner wall of the filter element 10. The reciprocating sliding of the vibrating frame 4 and the rotational motion of the brush shaft 11 form a compound cleaning action. Different drive strokes improve the removal effect of impurities on the inner wall of the filter element 10.

[0059] Furthermore, the arrangement of the three protrusions 12 effectively prevents stress concentration and stress fatigue in the filter element 10 under a single amplitude.

[0060] The brush shaft 11 has a channel and an array of internal through holes 14. The internal through holes 14 are connected to the channel. The axis of the internal through holes 14 is perpendicular to the axis of the filter element 10. The brush shaft 11 is equipped with spiral brush blades 15 that fit against the filter element 10. The upper part of the water purification cylinder 5 is connected to the upper branch pipe 16, and the bottom end is connected to the lower branch pipe 17. The other ends of the upper branch pipe 16 and the lower branch pipe 17 are both connected to the valve cylinder 3.

[0061] The connection between the water purification cylinder 5 and the upper branch pipe 16 is provided with an array of external through holes 45;

[0062] The water purification mechanism also includes a square groove formed on the brush shaft 11. The top of the square groove is open and slidably connected to the main shaft 6. The cross-section of the main shaft 6 and the square groove is a regular hexagon. A first bevel gear is installed on both the main shaft 6 and the driven wheel 13. The two first bevel gears mesh orthogonally. A second bevel gear is installed on both the filter element 10 and the brush shaft 11. A synchronous shaft 23 is rotatably connected to the water purification cylinder 5. A synchronous bevel gear is installed on the synchronous shaft 23. The two second bevel gears are both connected to the synchronous bevel gear. The two second bevel gears are respectively set on both sides of the synchronous bevel gear.

[0063] The main shaft 6 and the brush shaft 11 are slidably connected by a regular hexagonal groove, which not only ensures the power transmission of the main shaft 6 to the brush shaft 11, but also allows the brush shaft 11 to slide synchronously with the vibration frame 4, realizing the transmission of rotational power and axial sliding compatibility. The orthogonal meshing of the first bevel gear converts the circumferential motion of the wheel 7 into the rotational power of the driven wheel 13, ensuring the stability of the sliding drive of the vibration frame 4.

[0064] Two second bevel gears are symmetrically distributed on both sides of the synchronous bevel gear and mesh with it, so that the filter element 10 and the brush shaft 11 rotate in opposite directions synchronously, which significantly improves the relative scraping speed between the spiral brush blade 15 and the inner wall of the filter element 10, enhances the cleaning effect, and at the same time, the setting of the synchronous shaft 23 ensures the symmetry and stability of the transmission, reduces power loss, and optimizes the power transmission efficiency of the water purification mechanism.

[0065] The outer edge of the spiral brush blade 15 is evenly covered with rubber bristles. The spiral brush blade 15 adheres to the filter element 10 through the rubber bristles, thereby achieving cleaning.

[0066] The transmission mechanism is configured to drive the main shaft 6 to reciprocate intermittently at a first speed in the filtration station, to rotate forward at a first speed in the pre-cleaning station, and to rotate forward at a second speed in the self-cleaning station.

[0067] In a preferred embodiment, at the filtration station, the main shaft 6 alternately rotates forward, intermittently stops, and rotates in reverse. The rotation speeds for both forward and reverse rotations are set to a first speed of 5 r / min and a second speed of 9 r / min.

[0068] The transmission mechanism, through the integrated design of the second motor 25, belt, and gear set, achieves precise control of the spindle speed and rotation mode at different workstations.

[0069] The radius design of the transmission gear 30, the center angle of the effective meshing section, and the misalignment setting enable the reciprocating shaft 28 to drive the main shaft 6 of the filtration station to achieve reciprocating intermittent rotation in forward, intermittent, and reverse directions. This can reduce the adhesion and accumulation of impurities on the surface of the filter element 10 during the filtration process and delay clogging.

[0070] The low-speed ratio gear 37 enables the main shaft 6 of the pre-cleaning station and the filtration station to run stably at the first speed, ensuring filtration accuracy and the gentleness of the pre-cleaning process.

[0071] The high-speed gear 38 causes the main shaft 6 of the self-cleaning station to rotate at a high speed of the second speed, which enhances the scraping and cleaning effect of the spiral brush 15.

[0072] The entire transmission system has a compact structure, with all components working together to simplify the control logic of multi-mode drive, reduce equipment energy consumption, and improve operational reliability.

[0073] The transmission mechanism includes a second motor 25 mounted at the bottom of the housing 1, a central shaft 26 rotatably connected to the axis of the indexing frame 2, a transmission gear ring 27 mounted on the central shaft 26, a second belt drivingly connected to the output shaft of the second motor 25, the second belt drivingly connected to the central shaft 26, a reciprocating shaft 28 rotatably mounted on the central shaft 26, two secondary shafts 29 rotatably connected to the top of the housing 1, a third belt drivingly connected to the top of the central shaft 26, both secondary shafts 29 drivingly connected to the third belt, a transmission gear 30 mounted on each of the two secondary shafts 29, a driven gear 31 and a reciprocating gear ring 32 mounted on the reciprocating shaft 28, and two transmission gears... 30 alternately meshes with the driven gear 31. The main shaft 6 is equipped with an upper gear 46 and a lower gear 33. The housing 1 is rotatably connected to the positions corresponding to the filtration station, pre-cleaning station and self-cleaning station. The drive shaft 34 in the filtration station is equipped with a reciprocating gear 35 that meshes with the reciprocating gear ring 32. The drive shaft 34 in the pre-cleaning station and the self-cleaning station is equipped with a rotating gear 36 that meshes with the transmission gear ring 27. The drive shaft 34 in the filtration station and the pre-cleaning station is equipped with a low-speed ratio gear 37 that meshes with the lower gear 33. The drive shaft 34 in the self-cleaning station is equipped with a high-speed ratio gear 38 that meshes with the upper gear 46.

[0074] The radius of the transmission missing gear 30 is 9 times the radius of the driven gear 31. The center angle corresponding to the effective meshing section on the transmission missing gear 30 is 120°, and the center angle corresponding to the non-effective meshing section on the transmission missing gear 30 is 240°. The effective meshing sections on the two transmission missing gears 30 are offset by 120°.

[0075] The transmission ratio of the low-speed gear 37 to the lower gear 33 is 1:2, and the transmission ratio of the high-speed gear 38 to the upper gear 46 is 1.8:1.

[0076] By setting the transmission ratio and rotation speed as described above, excessive wear of the filter element 10 can be effectively avoided.

[0077] It also includes a hot air duct 39 installed on the top of the housing 1. An electric heating wire 40 is installed inside the hot air duct 39. Blower fan blades 41 are arrayed on the central shaft 26 and at positions corresponding to the inside of the hot air duct 39. The blower fan blades 41 are located below the electric heating wire 40. The air outlet of the hot air duct 39 is connected to a hot air delivery pipe 42, which is connected to the upper flange pipe 18 at the pre-cleaning station.

[0078] The hot air supply pipe is connected to one-way air outlet valves at 42 points;

[0079] At the pre-cleaning station, the working temperature of the heating wire 40 is 120℃, the blower blade 41 is a stainless steel blade, and at the same time, the working temperature of the heating jacket 8 at the pre-cleaning station is 100℃.

[0080] The central shaft 26 drives the blower blades 41 to rotate and generate airflow. After being heated by the heating wire 40, it forms hot air, which is then directionally delivered to the upper flange pipe 18 of the pre-cleaning station through the hot air delivery pipe 42. Together with the electric heating jacket 8 on the water purification cylinder 5, it forms a dual heating environment, which can quickly dry the residual moisture on the surface of the filter element 10. At the same time, the high-temperature hot air at 120°C can help decompose some stubborn organic impurities.

[0081] The one-way air outlet valve effectively prevents hot air backflow, ensuring that hot air acts directionally on filter element 10, avoiding interference with airflow from other stations, creating a dry and residue-free pretreatment environment for high-pressure rinsing of cleaning water in the subsequent self-cleaning station, improving the efficiency of deep cleaning, and reducing the risk of bacteria growth due to moisture residue in filter element 10, ensuring the hygiene and safety of filter element 10 for reuse.

[0082] The housing 1 is connected to the upper flange pipe 18, which is adapted to and connected to the upper branch pipe 16, at the positions corresponding to the filtration station, pre-cleaning station and self-cleaning station. The housing 1 is connected to the lower flange pipe 19, which is connected to the lower branch pipe 17, at the positions corresponding to the pre-cleaning station and self-cleaning station.

[0083] The upper flange pipe 18 at the filtration station is configured to connect to the clean water discharge pipe, and the lower flange pipe 19 at the same station is configured to connect to the sewage inlet pipe. The lower flange pipes 19 at both the pre-cleaning station and the self-cleaning station are configured to connect to the sewage discharge pipe, and the upper flange pipe 18 at the self-cleaning station is configured to connect to the clean water.

[0084] The upper flange pipe 18 at the filtration station is equipped with a first one-way outlet valve, and the lower flange pipe 19 at the same station is equipped with a first one-way inlet valve.

[0085] Both the lower flange pipe 19 at the pre-cleaning station and the self-cleaning station are equipped with a second one-way water outlet valve;

[0086] The maintenance mechanism includes a maintenance box 43 installed on the housing 1, which is filled with maintenance fluid. A pump body is connected to the bottom of the maintenance box 43. The pump body is connected to the housing 1 at the corresponding maintenance position. A guide pipe 44 is connected to the bottom of the upper branch pipe 16. A sealing ring connected to the guide pipe 44 is installed at the bottom of the brush shaft 11. The other end of the guide pipe 44 is connected to the valve cylinder 3.

[0087] The components of the maintenance solution, by weight percentage, include: 3.0%-5.0% food-grade hydroxypropyl modified starch, 1.0%-2.0% food-grade sodium carboxymethyl cellulose, 0.5%-1.0% food-grade ultrafine diatomaceous earth, 0.3%-0.8% food-grade chitosan, 0.2%-0.5% food-grade polyglycerol fatty acid ester, with the balance being deionized water;

[0088] After the maintenance fluid is sprayed out through the inner through hole 14, it adheres evenly to the inner wall of the filter element 10 and solidifies within 2-4 minutes to form a porous and tough membrane. The membrane has a Shore hardness of 25-35D and can withstand the intermittent rotation and scraping of the spiral brush blade 15 at the filtration station and the reciprocating sliding impact of the vibrating frame 4 without falling off or cracking.

[0089] The tough membrane has a membrane porosity of 40%-50% and a pore size of 0.1-0.5μm. It forms a gradient filtration with the pore structure of the filter element 10's filtration functional layer, which can help intercept tiny suspended particles and colloidal impurities larger than 50nm in the water, enhance filtration accuracy, and at the same time, not reduce the flux of the filter element 10.

[0090] Chitosan components can adsorb trace heavy metal ions and some organic pollutants in water, synergistically improving the water purification effect. All components of the maintenance solution meet the standards for the use of food additives. The solidified film layer has no odor, no toxic or harmful substances are released, and has no impact on drinking water quality.

[0091] The membrane layer has no compatibility conflict with the support skeleton layer, filtration function layer and sealing structure of the filter element 10, and does not cause corrosion or swelling. It can be completely peeled off at the self-cleaning station by high-speed rotation scraping at 9r / min and high-pressure rinsing with clean water. After peeling, the filtration performance of the filter element 10 is restored to the initial state, and there is no residual membrane residue clogging the pores.

[0092] The upper flange pipe 18 and the lower flange pipe 19 clearly define the fluid transport path for each station;

[0093] The filtration station realizes the core function of sewage inlet and clean water outlet, the pre-cleaning station and the self-cleaning station focus on impurity discharge, and the self-cleaning station is connected to clean water separately to achieve deep rinsing.

[0094] The one-way valves configured in each pipeline can effectively block backflow of fluid, avoid cross-contamination between sewage, clean water and purified water, and ensure the purity of the filtered water;

[0095] Meanwhile, the clear fluid path design ensures that the work at each station does not interfere with each other, improves the stability of equipment operation, reduces the risk of pipeline blockage and contamination, and ensures the quality of purified water and the effectiveness of the self-cleaning process.

[0096] At the pre-cleaning station, hot air is used to pre-clean impurities;

[0097] In the self-cleaning station, the high-speed rotating spiral brush 15 and the high-pressure flushing of cleaning water remove residual impurities from the inner wall of the filter element 10 to achieve secondary cleaning. Through double cleaning, the amount of cleaning water consumed by traditional single high-pressure backwash cleaning can be effectively reduced.

[0098] The specific steps for using this invention are as follows:

[0099] The working principle of the self-cleaning water purifier of the present invention revolves around four counterclockwise arranged workstations inside the shell 1: filtration, pre-cleaning, self-cleaning, and maintenance. Through the fixed connection between the indexing frame 2 and the valve cylinder 3 and the intermittent rotation driven by the first motor 20, the four water purification mechanisms can be accurately switched between each workstation.

[0100] The water purification unit stays at each station for ≥20 minutes, and the station transition time is ≤2 seconds;

[0101] The central control unit 21, combined with the temperature probe 22, monitors the temperature of the water purification cylinder 5 in real time, providing data support for the operation adjustment of the electric heating jacket 8. At the filtration station, sewage is introduced through the lower flange pipe 19. The transmission mechanism drives the main shaft 6 to reciprocate intermittently at the first speed. The brush shaft 11 is driven to rotate through the regular hexagonal square groove. At the same time, the main shaft 6 drives the rotating wheel 7 to rotate through the first bevel gear. Its three protrusions 12 with different driving strokes alternately mesh with the driven wheel 13, causing the vibrating frame 4 to slide back and forth along the positioning guide rail 24. The filter element 10 and the brush shaft 11 achieve reverse synchronous rotation through the meshing of the synchronous bevel gear and the second bevel gears on both sides. The spiral brush blade 15 scrapes against the inner wall of the filter element 10 to reduce the adhesion of impurities. The filtered water is discharged from the upper flange pipe 18.

[0102] After filtration, the water purification unit switches to the pre-cleaning station. The electric heating wire 40 in the hot air tube 39 heats the air, which is blown by the blower fan blade 41 and delivered to the upper flange pipe 18 of the station by the hot air delivery pipe 42. With the double heating of the electric heating jacket 8, the residual moisture of the filter element 10 is dried and some organic impurities are decomposed. The impurities are discharged through the lower flange pipe 19 with the airflow.

[0103] Then it enters the self-cleaning station. Cleaning water is introduced from the upper flange pipe 18. The transmission mechanism drives the main shaft 6 to rotate at high speed at the second speed through the high-speed ratio gear 38. The spiral brush blade 15 enhances the scraping effect. The cleaning water is sprayed out through the brush shaft 11 channel and the inner through hole 14 to form high-pressure rinsing. Impurities are discharged through the lower flange pipe 19.

[0104] In both the self-cleaning and pre-cleaning stations, the spiral brush blade 15 discharges wastewater downwards.

[0105] Finally, at the maintenance station, the pump body delivers the maintenance fluid in the maintenance tank 43 to the brush shaft 11 channel through the guide pipe 44 and valve cylinder 3. It is then sprayed out through the inner through hole 14 and solidified on the inner wall of the filter element 10 to form a porous and tough membrane, which helps to improve the subsequent filtration accuracy. The upper branch pipe 16 and lower branch pipe 17 of each station are precisely connected to the corresponding flange pipe through the valve cylinder 3. The one-way valve prevents fluid backflow and realizes the automated and coordinated operation of water purification, self-cleaning and maintenance.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-cleaning water purifier comprising a housing (1) in which are arranged in sequence in a counterclockwise direction a filtering station, a pre-cleaning station, a self-cleaning station and a maintenance station, the housing (1) being provided with an intermittent rotating indexing frame (2), characterized in that, A valve cylinder (3) is rotatably connected to the shell (1), the indexing frame (2) is fixedly connected with the valve cylinder (3), and four water purification mechanisms are arranged on the indexing frame (2); The water purification mechanism comprises a vibrating frame (4), a water purification cylinder (5) fixedly connected to the indexing frame (2), a main shaft (6) and a rotating wheel (7) rotatably connected to the indexing frame (2), and the water purification cylinder (5) is provided with an electric heating jacket (8), the vibrating frame (4) is slidably connected with the water purification cylinder (5), and a spring (9) is arranged between the vibrating frame (4) and the water purification cylinder (5), a filter core (10) is rotatably connected to the vibrating frame (4), an axis of the filter core (10) is rotatably connected with a brush shaft (11), the filter core (10), the rotating wheel (7) and the brush shaft (11) are all connected with the main shaft (6), in the circumferential direction, three protruding portions (12) are arranged on the rotating wheel (7), a driven wheel (13) is rotatably connected to the vibrating frame (4), the three protruding portions (12) are alternately connected with the driven wheel (13) and the driving stroke of the three protruding portions (12) to the driven wheel (13) is different, a channel is formed in the brush shaft (11) and a plurality of inner through holes (14) are arranged in the channel, the inner through holes (14) are communicated with the channel, a spiral brush leaf (15) is arranged on the brush shaft (11) and abuts against the filter core (10), an upper branch pipe (16) is communicated with the upper portion of the water purification cylinder (5), a lower branch pipe (17) is communicated with the bottom end of the water purification cylinder (5), and the other ends of the upper branch pipe (16) and the lower branch pipe (17) are communicated with the valve cylinder (3); The transmission mechanism is configured to drive the main shaft (6) to reciprocatingly and intermittently rotate at a first rotating speed in the filtering position, to rotate in a forward direction at the first rotating speed in the pre-cleaning position, and to rotate in a forward direction at a second rotating speed in the self-cleaning position; The shell (1) is communicated with the upper flange pipe (18) corresponding to the filtering position, the pre-cleaning position and the self-cleaning position, and the lower flange pipe (19) corresponding to the pre-cleaning position and the self-cleaning position is communicated with the lower branch pipe (17); The maintenance mechanism is configured to drive the maintenance liquid to be sprayed out through the inner through holes (14) in the maintenance position.

2. The self-cleaning water purifier according to claim 1, wherein A first motor (20) is mounted on the bottom of the shell (1), a first belt is drivingly connected to the output shaft of the first motor (20) and the indexing frame (2), a central control unit (21) is mounted on the end face of the shell (1), a temperature probe (22) is mounted on the bottom of the water purification cylinder (5), and the data end of the temperature probe (22) is data-connected with the central control unit (21).

3. The self-cleaning water purifier according to claim 1, wherein The water purification mechanism further comprises a square groove formed on the brush shaft (11), the square groove is open at the top end and is slidably connected with the main shaft (6), the main shaft (6) and the square groove are both hexagonal in cross section, the main shaft (6) and the driven wheel (13) are both provided with a first bevel gear, the two first bevel gears are orthogonally engaged, the filter core (10) and the brush shaft (11) are both provided with a second bevel gear, a synchronous shaft (23) is rotatably connected to the water purification cylinder (5), a synchronous bevel gear is mounted on the synchronous shaft (23), the two second bevel gears are drivingly connected with the synchronous bevel gear, and the two second bevel gears are respectively arranged on the two sides of the synchronous bevel gear.

4. The self-cleaning water purifier according to claim 1, wherein In the circumferential direction, the three convex parts (12) are 0.06 times, 0.075 times and 0.09 times the length of the filter core (10) respectively, the top of the water purification cylinder (5) is provided with a positioning guide rail (24), the positioning guide rail (24) is slidably connected with the vibration frame (4), and the communication position of the water purification cylinder (5) and the upper branch pipe (16) is provided with an outer through hole (45).

5. The self-cleaning water purifier according to claim 1, wherein The transmission mechanism comprises a second motor (25) mounted at the bottom of the shell (1), a central shaft (26) rotatably connected to the axis position of the indexing frame (2), a transmission gear ring (27) mounted on the central shaft (26), a second belt rotatably connected to the output shaft of the second motor (25), and the central shaft (26) is rotatably sleeved with a reciprocating shaft (28), the top of the shell (1) is rotatably connected with two auxiliary shafts (29), the top of the central shaft (26) is rotatably connected with a third belt, the two auxiliary shafts (29) are rotatably connected with the third belt, the two auxiliary shafts (29) are rotatably connected with a transmission missing gear (30), the reciprocating shaft (28) is rotatably connected with a driven gear (31) and a reciprocating gear ring (32), the two transmission missing gears (30) are rotatably connected with the driven gear (31), the main shaft (6) is rotatably connected with an upper gear (46) and a lower gear (33), the shell (1) is rotatably connected with a drive shaft (34) at positions corresponding to the filtering station, the pre-cleaning station and the self-cleaning station, the drive shaft (34) in the filtering station is rotatably connected with a reciprocating gear (35) engaged with the reciprocating gear ring (32), the drive shaft (34) in the pre-cleaning station and the self-cleaning station is rotatably connected with a rotating gear (36) engaged with the transmission gear ring (27), the drive shaft (34) in the filtering station and the pre-cleaning station is rotatably connected with a low-speed ratio gear (37) engaged with the lower gear (33), and the drive shaft (34) in the self-cleaning station is rotatably connected with a high-speed ratio gear (38) engaged with the upper gear (46).

6. A self-cleaning water filter according to claim 5, wherein The radius of the transmission missing gear (30) is 8-10 times the radius of the driven gear (31), the central angle corresponding to the effective engagement section of the transmission missing gear (30) is 120°, the central angle corresponding to the non-effective engagement section of the transmission missing gear (30) is 240°, and the effective engagement sections of the two transmission missing gears (30) are arranged with a 120° offset.

7. The self-cleaning water filter according to claim 5, wherein The transmission ratio of the low-speed ratio gear (37) to the lower gear (33) is 1:2, and the transmission ratio of the high-speed ratio gear (38) to the upper gear (46) is 1.8:

1.

8. The self-cleaning water filter of claim 5, wherein, A hot air cylinder (39) is installed on the top of the shell (1), an electric heating wire (40) is installed in the hot air cylinder (39), air blowing fan blades (41) are installed on the central shaft (26) and correspond to the position inside the hot air cylinder (39), the air blowing fan blades (41) are arranged below the electric heating wire (40), an air outlet end of the hot air cylinder (39) is communicated with a hot air delivery pipe (42), and the hot air delivery pipe (42) is communicated with the upper flange pipe (18) at the pre-cleaning station.

9. A self-cleaning water filter according to claim 8, wherein The upper flange pipe (18) at the filtering station is configured to be communicated with a clean water discharge pipe, the lower flange pipe (19) at the station is configured to be communicated with a sewage inlet pipe, the lower flange pipes (19) at the pre-cleaning station and the self-cleaning station are configured to be communicated with sewage discharge pipes, and the upper flange pipe (18) at the self-cleaning station is configured to be communicated with clean water.

10. The self-cleaning water purifier according to claim 1, wherein The maintenance mechanism comprises a maintenance tank (43) installed on the shell (1), the maintenance tank (43) is filled with a maintenance liquid, a pump body is communicated with the bottom of the maintenance tank (43), the pump body is communicated with the shell (1) at a position corresponding to the maintenance station, the bottom of the upper branch pipe (16) is communicated with a flow guide pipe (44), a sealing rubber ring connected with the flow guide pipe (44) is installed at the bottom end of the brush shaft (11), and the other end of the flow guide pipe (44) is communicated with the valve cylinder (3).

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