An integrated direct drinking water multi-stage filtration and purification device and method

Abstract

The present invention relates to the technical field of filtration and purification, and specifically discloses an integrated direct drinking water multi-stage filtration and purification device and method. The integrated direct drinking water multi-stage filtration and purification device comprises a tank body and a filter assembly. The tank body is provided with a water inlet and a water outlet. The filter assembly comprises a filter plate and a filter element. The tank body is provided with a mounting cylinder. A mounting plate is provided in the tank body. A working space of the filter element is formed between the mounting cylinder and the mounting plate. The water outlet is connected with a water outlet pipe. The filter elements are arranged in sequence in the mounting cylinder along the vertical direction, and adjacent filter elements are connected by a clamping structure. The mounting cylinder and the filter element are threadedly connected. A driving assembly 1 for driving the filter element to rotate and a driving assembly 2 for driving the filter element to move downward are provided in the tank body. The filter plate is located below the water inlet and above the working space. The integrated direct drinking water multi-stage filtration and purification device and method of the present invention can realize the automatic replacement of the filter element, and the filter element and the working space will not be exposed, thereby ensuring the tightness of the filter element installation and the water quality.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration and purification, and in particular to an integrated direct drinking water multi-stage filtration and purification device and method. Background Art

[0002] The filter of a water purifier is its core component, and it has the important task of filtering impurities, particles, microorganisms and other pollutants in the water to ensure that users have clean and safe drinking water. However, as the use time increases, various pollutants will gradually accumulate on the filter, which will not only reduce the filtration efficiency of the filter, but may also cause water quality to deteriorate and even damage the water purifier itself. Therefore, regular cleaning and replacement of the filter of the water purifier is a key operation to maintain its normal operation and extend its service life.

[0003] The Chinese patent with announcement number CN219128451U discloses a pull-out filter element assembly and a water purifier thereof, wherein the pull-out filter element assembly includes a core cover, a core barrel, a core bottom and a filter screen, wherein the inner wall at the top of the core barrel is provided with slots at equal distances and angles, the filter screen is sleeved on the outside of the core barrel, the core cover is fixedly connected to the top of the core barrel, the top of the filter screen is slidably plugged with the core cover, the core cover and the top of the core barrel are both provided with grooves at equal distances and angles, the core bottom is fixedly connected to the bottom of the core barrel, and the bottom of the filter screen is slidably plugged with the bottom of the core. The water purifier includes a top cover and an outer shell, wherein the outer shell is sleeved on the outside of the core barrel, the top of the outer shell is sleeved with a top cover, one side of the top cover is fixedly connected with a liquid outlet pipe, the other side of the top cover is internally fixedly connected with a liquid inlet pipe, the inner wall at the top of the top cover is fixedly connected with an inner barrel, one end of the liquid inlet pipe is fixedly connected with the inner barrel, the bottom of the inner barrel is fixedly connected with a gasket, the bottom of the gasket is fixedly connected with bending strips at equal distances and angles, and the bending strips are all matched with the corresponding slots.

[0004] In the above technical solution, the top cover of the water purifier is connected to the slot on the core barrel on the filter element through the bending strip on the gasket. When the filter element inside the water purifier needs to be taken out, the top cover is rotated to make the bending strip and the slot offset. When the bending strip is rotated to the position facing the groove, the top cover of the water purifier can be removed and the filter element can be replaced.

[0005] However, in the actual implementation of the above technical solution, the operator is required to regularly observe the filter element and manually replace the filter element with a new one when the filter element needs to be replaced. The degree of automation is low, and the operator is required to replace the filter element in time to ensure the water quality. In addition, during the manual replacement process, the top cover of the water purification device needs to be disassembled and installed, which may cause the connection between the liquid inlet pipe and the liquid outlet pipe on the top cover and the pipeline to loosen, or external dirt may fall into the installation space of the filter element, resulting in loose installation of the filter element and water leakage.

[0006] Therefore, the art needs an integrated direct drinking water multi-stage filtration and purification device and method to solve the above problems. Summary of the invention

[0007] The present invention provides an integrated direct drinking water multi-stage filtration and purification device and method, aiming to solve the problem that the filter element of the purification device in the related art needs to be manually disassembled and replaced each time, the degree of automation is low, and the installation space of the filter element is exposed during replacement, which is easy to fall into foreign objects, resulting in loose installation of the filter element and affecting the water quality.

[0008] On the one hand, the present invention provides an integrated direct drinking water multi-stage filtering and purification device, comprising a tank body and a filtering assembly arranged in the tank body, the tank body is provided with a water inlet and a water outlet, the filtering assembly comprises a filter plate and a plurality of filter elements, a mounting cylinder extending to the inside of the tank body is arranged on the top of the tank body, a mounting plate is arranged in the tank body, a working space of the filter element is formed between the bottom of the mounting cylinder and the mounting plate, the water outlet is detachably connected with a water outlet pipe, the water outlet pipe is communicated with the inside of the filter element, and a movable space for the filter element to pass through is formed between the water outlet pipe and the mounting plate;

[0009] Multiple filter elements are arranged in sequence vertically in the installation cylinder, and adjacent filter elements are connected by a clamping structure, the inner circumference of the installation cylinder and the filter element are threadedly connected by a threaded section, a driving component 1 for driving the filter element to rotate and a driving component 2 for driving the filter element to move downward are arranged in the tank body, and the filter plate is located below the water inlet and above the working space;

[0010] When driving component 1 drives the filter element to rotate, the threaded section between the filter element and the mounting tube is temporarily disconnected. When driving component 2 drives the filter element to move downward, all filter elements move downward synchronously until the filter element in the working space moves to the bottom of the activity space, and the filter element in the mounting tube moves to the working space to contact and connect with the water outlet pipe.

[0011] When it is necessary to replace the filter element located in the working space, the driving component 1 is controlled to drive the filter element to rotate and the driving component 2 is controlled to drive the filter element downward. All the filter elements are synchronously rotated and moved downward through the connection of the clamping structure. During the rotation of the filter element, the threaded connection with the installation cylinder is disengaged, and the filter element in the working space moves to the bottom of the activity space. When the filter element in the installation cylinder moves until the working space is in contact and connected with the water outlet pipe, the replacement is completed. The present invention can realize automatic replacement of the filter element. Moreover, during the replacement process, the new filter element and the working space of the filter element will not be exposed to the external environment, thereby improving the problem that external foreign matter can easily fall into the tank body and affect the tightness of the filter element installation and the water quality.

[0012] Preferably, a sinking groove is provided in the center of the filter plate, and the sinking groove is sleeved on the outer periphery of the filter element located in the working space, and a one-way transmission component is provided on the side of the sinking groove close to the filter element. When the filter plate rotates counterclockwise, the one-way transmission component drives the filter element to rotate synchronously. The filter plate is vertically slidably arranged in the tank body, and the driving component 1 drives the filter plate to rotate counterclockwise to drive the filter element to rotate synchronously, and while rotating counterclockwise, the driving component 2 drives the filter plate to move downward, driving the filter element to move downward synchronously.

[0013] When it is necessary to clean the outside of the filter element in the working space, the filter plate is driven to rotate clockwise, and at the same time, the filter plate is driven downward to scrape off the dirt attached to the periphery of the filter element. The scraped dirt passes through the filter plate and enters the top of the filter plate under the drive of the water flow. The water entering the top of the filter plate enters the inside of the filter element from the part of the filter element located above the filter plate, and the impurities in the water adhere to the filter element. Then, the filter plate is driven upward to scrape off the dirt attached to the periphery of the filter element into the sinking groove, thereby cleaning the filter element and extending the service life of the filter element.

[0014] Preferably, the one-way transmission assembly includes a wedge block and a spring, a mounting groove is provided on one side of the sinking groove close to the filter element, the wedge block is rotatably connected in the mounting groove, the spring is connected between the wedge block and the mounting groove, a protrusion extends from the wedge block, and one side of the protrusion of the spring pushes the wedge block to fit the outer periphery of the filter element, and friction grooves are evenly spaced along the circumferential direction at positions near the top of the outer periphery of the filter element. When the filter plate rotates counterclockwise along the friction groove, the friction groove pushes the wedge block to rotate until the protrusion is squeezed on the friction groove, driving the filter element to rotate synchronously.

[0015] Preferably, a plurality of flaps are provided in the sinking trough, and a sliding rod corresponding to each flap is vertically slidably connected to the outer periphery of the mounting cylinder, and each flap is rotatably connected to the corresponding sliding rod, and a torsion spring is provided at the rotatable connection. When the flap is not subjected to external force, the torsion spring drives the flap to be in a vertical state, an annular groove is provided on the filter plate, and a protrusion extending into the annular groove is fixedly connected to the flap, and a lever corresponding to each flap is rotatably connected to the filter plate, and when the filter plate rotates clockwise, the lever drives the flap to flip to a horizontal state, and when the filter plate rotates counterclockwise, the lever rotates over the flap.

[0016] When cleaning the filter element, the filter plate rotates clockwise, and the lever pushes the flap to flip to a horizontal state. The flap blocks the notch of the sinking trough. In the process of the filter plate scraping the filter element downward, the dirt in the sinking trough will not float up and drift to the outside of the sinking trough; in the process of the filter plate moving upward, the filter plate rotates counterclockwise, and the flap returns to a vertical state. When the lever touches the flap, it passes over the flap, so that the notch of the sinking trough is in an open state, which is conducive to scraping the dirt attached to the filter element into the sinking trough.

[0017] Preferably, a sewage outlet is provided at the bottom of the sinking trough, and a block one is arranged at the sewage outlet. The block one is slidably connected to the sinking trough along the circumference of the filter element, and a spring is connected between the block one and the sinking trough. The spring drives the block one to block the sewage outlet. A sewage storage barrel is extended downward on one side of the mounting plate close to the activity space, and a driving component three for driving the block one to open is arranged in the sewage storage barrel.

[0018] When the sinking tank moves into the dirt storage tank, the driving component three drives the block one to open the sewage outlet, so that the dirt in the sinking tank is discharged into the dirt storage tank, avoiding the dirt from re-entering the water body and affecting the water quality, and facilitating the centralized treatment of the dirt.

[0019] Preferably, drive component three includes a mounting plate fixedly connected to the dirt storage cylinder, the mounting plate is provided with a through groove corresponding to the sewage outlet, and a block two is arranged in the through groove, and block two is slidingly connected to the mounting plate along the circumference of the filter element, and a spring is connected between block two and the mounting plate, and the spring drives block two to block the through groove, and the bottom of block one is elastically connected with an elastic block, and the top of block two is connected with a convex ridge, and during the rotation of the filter plate, the elastic block and the convex ridge cooperate to open block one and block two.

[0020] Preferably, a connection cover is fixedly connected to the outer periphery of the water outlet pipe, the connection cover is threadedly connected to the bottom of the tank body, and the bottom of the dirt storage cylinder is communicated with the connection cover.

[0021] The dirt in the dirt storage barrel falls onto the connecting cover. When the replaced filter element needs to be taken out, the connecting cover on the water outlet pipe needs to be opened. At this time, the dirt in the dirt storage barrel will be discharged from the tank body, making it convenient to handle the dirt and the replaced filter element at the same time.

[0022] Preferably, the threaded section is arranged at a position near the bottom of the inner circumference of the mounting cylinder and at a position near the bottom of the outer circumference of each filter element, a fixing plate is fixedly connected in the tank body, and a driving component 1 includes a motor 1 connected to the fixing plate, a gear 1 connected to the motor 1, and a gear 2 meshing with the gear 1, and the gear 2 is connected to the filter plate through a connecting rod.

[0023] Preferably, the snap-in structure includes a snap-in groove and a snap-in block, the snap-in groove includes a transverse part and a vertical part, the snap-in groove is opened on the side wall of the filter element near the bottom, the snap-in block is fixedly connected to the inner circumferential surface of the filter element near the top, when the filter element rotates counterclockwise, the snap-in block is located in the transverse part, the drive component 2 includes a motor 2 and a lead screw, the outer peripheral sleeve of the mounting cylinder is provided with a mounting ring, the lead screw is threadedly matched with the mounting ring, and the connecting rod is rotationally matched with the mounting ring through the connecting ring.

[0024] On the other hand, the present invention also provides an integrated direct drinking water multi-stage filtration and purification method, using the integrated direct drinking water multi-stage filtration and purification device described in any one of the above preferred technical solutions, the integrated direct drinking water multi-stage filtration and purification method comprises the following steps:

[0025] Water enters the tank from the water inlet, is filtered by the filter plate, and then enters the filter element located in the working space. After being filtered by the filter element, it is discharged from the outlet pipe.

[0026] The integrated direct drinking water multi-stage filtration and purification method of the present invention filters larger volumes of dirt through the filter plate and filters smaller volumes of dirt through the filter element, thereby achieving graded filtration with better filtration effect. Moreover, by using the above-mentioned integrated direct drinking water multi-stage filtration and purification device, the filter element can be automatically replaced, further improving the filtration and purification effect.

[0027] The beneficial effects of the present invention are as follows: the present invention can realize automatic replacement of the filter element, and during the replacement process, the new filter element and the working space of the filter element will not be exposed to the external environment, thereby improving the problem that external foreign matter can easily fall into the tank body and affect the tightness of the filter element installation and the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an integrated multi-stage filtering and purification device for direct drinking water of the present invention.

[0029] Figure 2 It is a cross-sectional view of an integrated direct drinking water multi-stage filtering and purification device of the present invention.

[0030] Figure 3 It is an assembly cross-sectional view of a mounting cylinder and a filter element of an integrated direct drinking water multi-stage filtering and purification device of the present invention.

[0031] Figure 4 It is an assembly cross-sectional view of a tank body and a water outlet pipe of an integrated direct drinking water multi-stage filtering and purifying device of the present invention.

[0032] Figure 5 This is a cross-sectional view of the assembly of the filter plate and filter element of an integrated direct drinking water multi-stage filtration and purification device of the present invention. Figure 1 .

[0033] Figure 6 It is an assembly cross-sectional view of a flap and a mounting cylinder of an integrated direct drinking water multi-stage filtering and purification device of the present invention.

[0034] Figure 7 This is a cross-sectional view of the assembly of the filter plate and filter element of an integrated direct drinking water multi-stage filtration and purification device of the present invention. Figure 2 .

[0035] Figure 8 It is a schematic diagram of the assembly of a filter plate and a flap of an integrated direct drinking water multi-stage filtering and purification device of the present invention.

[0036] Fig. 9 It is a structural schematic diagram of a driving component 1 and a driving component 2 of an integrated direct drinking water multi-stage filtering and purification device of the present invention.

[0037] Reference numerals:

[0038] 1. Tank body; 11. Water inlet; 12. Fixing plate; 13. Mounting plate; 14. Dirt storage cylinder; 2. Filter element; 21. Top sleeve; 22. Bottom sleeve; 23. Connecting rod; 24. Filter screen; 25. Snap-on groove; 26. Snap-on block; 3. Filter plate; 31. Sinking groove; 32. Wedge block; 33. Raised part; 34. Ring groove; 35. Support rod; 36. Push rod; 37. Block 1; 38. Spring block; 4. Mounting cylinder; 41. Threaded section; 5. Water outlet pipe; 51. Connecting cover; 6. Flap; 61. Slide rod; 7. Mounting plate; 71. Block 2; 73. Protruding ridge; 8. Motor 1; 81. Gear 1; 82. Gear 2; 83. Connecting rod; 84. Connecting ring; 9. Motor 2; 91. Bevel gear 1; 92. Bevel gear 2; 93. Lead screw; 94. Mounting ring. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0040] like Figures 1 to 9 As shown, an integrated direct drinking water multi-stage filtration and purification device of the present invention comprises a tank body 1 and a filtration assembly arranged in the tank body 1, a water inlet 11 and a water outlet (not shown in the figure) are provided on the tank body 1, and a fixing plate 12 and a mounting plate 13 arranged at intervals up and down are provided in the tank body 1, and a water filtration space is formed between the fixing plate 12 and the mounting plate 13. The filtration assembly comprises a filter plate 3 and a plurality of filter elements 2, a mounting cylinder 4 extending to the inside of the tank body 1 is provided on the top of the tank body 1, a working space of the filter element 2 is formed between the bottom of the mounting cylinder 4 and the mounting plate 13, and a top cover (not shown in the figure) is provided on the top of the mounting cylinder 4.

[0041] like Figure 2 , Figure 3 and Figure 6 As shown, a plurality of filter elements 2 are arranged in sequence in the vertical direction in the mounting barrel 4, and adjacent filter elements 2 are connected by a snap-fit ​​structure. The filter element 2 comprises a filter barrel and a filter screen 24 mounted on the outer periphery of the filter barrel, and the filter barrel comprises a top sleeve 21, a bottom sleeve 22, and a connecting rod 23 connecting the top sleeve 21 and the bottom sleeve 22. The snap-fit ​​structure comprises a snap-fit ​​groove 25 and a snap-fit ​​block 26, the snap-fit ​​groove 25 comprises a transverse portion and a vertical portion, the snap-fit ​​groove 25 is provided in the bottom sleeve 22 of the filter element 2, and the snap-fit ​​block 26 is fixedly connected to the inner circumference of the top sleeve 21 of the filter element 2. When two adjacent filter elements 2 are connected, the snap-fit ​​block 26 is located in the transverse portion of the corresponding snap-fit ​​groove 25. The inner circumference of the mounting barrel 4 near the bottom and the outer circumference of the bottom sleeve 22 of each filter element 2 are respectively provided with matching threaded sections 41.

[0042] like Figures 2 to 4As shown, when filtering water, one of the filter elements 2 is located in the working space, the filter element 2 located above the filter element 2 is located in the mounting tube 4, and is threadedly connected to the mounting tube 4 through the cooperation of the threaded section 41, the filter plate 3 is located below the water inlet 11 and above the working space, and the water outlet of the tank body 1 is detachably connected with the water outlet pipe 5, and the water outlet pipe 5 is connected to the inside of the filter element 2 located in the working space. Water enters the tank body 1 from the water inlet 11, enters the filter element 2 located in the working space after being filtered by the filter plate 3, and is discharged from the water outlet pipe 5 after being filtered by the filter element 2.

[0043] A driving component 1 for driving the filter element 2 to rotate and a driving component 2 for driving the filter element 2 to move downward are arranged in the tank body 1. A connecting cover 51 is fixedly connected to the outer periphery of the water outlet pipe 5. The connecting cover 51 is threadedly connected to the bottom of the tank body 1. A movable space for the filter element 2 to pass through is formed between the water outlet pipe 5 and the mounting plate 13.

[0044] When the filter element 2 located in the working space needs to be replaced, the driving component 1 is controlled to drive the filter element 2 to rotate and the driving component 2 is controlled to drive the filter element 2 to move downward at the same time. All the filter elements 2 are synchronously rotated and moved downward through the connection of the clamping structure. During the rotation of the filter element 2, the threaded connection between the filter element 2 and the installation cylinder 4 is separated, and the filter element 2 in the working space moves to the bottom of the activity space. When the filter element 2 in the installation cylinder 4 moves to the working space and contacts and communicates with the outlet pipe 5, the replacement is completed. The present invention can realize the automatic replacement of the filter element 2, and during the replacement process, the new filter element 2 and the working space of the filter element 2 will not be exposed to the external environment, which improves the problem that external foreign matter is easy to fall into the tank body 1 and affect the tightness of the installation of the filter element 2 and the water quality.

[0045] like Figure 2 , Figures 5 to 7 As shown, a sinking groove 31 is provided at the center of the filter plate 3, and the sinking groove 31 is sleeved on the outer periphery of the filter element 2 located in the working space, and a one-way transmission component is provided on one side of the sinking groove 31 close to the filter element 2, so as to Figure 7 With the orientation in the figure as a reference, when the filter plate 3 rotates counterclockwise, the filter element 2 is driven to rotate synchronously through the one-way transmission component, and the filter plate 3 is vertically slidably arranged in the tank body 1. The driving component 1 drives the filter plate 3 to rotate counterclockwise to drive the filter element 2 to rotate synchronously, and at the same time, the driving component 2 drives the filter plate 3 to move downward to drive the filter element 2 to move downward synchronously, so as to realize the replacement of the filter element 2.

[0046] The bottom of the sinking groove 31 is tilted downward from the side away from the filter element 2 to the side close to the filter element 2. When the outside of the filter element 2 in the working space needs to be cleaned, the filter plate 3 is driven to rotate clockwise by the driving component 1, and the filter plate 3 is driven to move downward by the driving component 2 at the same time. Since the one-way transmission component does not work at this time, the filter plate 3 will not drive the filter element 2 to move synchronously. The filter plate 3 moves downward while rotating along the outer periphery of the filter element 2. The side of the sinking groove 31 of the filter plate 3 close to the filter element 2 scrapes off the dirt attached to the outer periphery of the filter element 2, and the water below the filter plate 3 is squeezed to move above the filter plate 3, and the scraped dirt moves along the filter element 2. The bottom of the sinking trough 31 moves upward, and driven by the water flow, passes through the filter plate 3 and enters the top of the filter plate 3. The water entering the top of the filter plate 3 enters the inside of the filter element 2 from the part of the filter element 2 located above the filter plate 3. Impurities in the water adhere to the filter element 2. When the filter plate 3 moves downward to a preset position, the filter plate 3 is driven upward by the driving component 2. The sinking trough 31 is close to one side of the filter element 2 to scrape the dirt attached to the outer periphery of the filter element 2 into the sinking trough 31, thereby cleaning the filter element 2 and extending the service life of the filter element 2.

[0047] The one-way transmission assembly includes a wedge 32 and a spring. A mounting groove (not shown in the figure) is provided on one side of the sinking groove 31 close to the filter element 2. The wedge 32 is rotatably connected in the mounting groove. The spring is connected between the wedge 32 and the mounting groove. A protrusion 33 extends from the wedge 32. The spring pushes one side of the protrusion 33 of the wedge 32 to fit the outer periphery of the filter element 2. The top sleeve 21 of the filter element 2 is evenly spaced along the circumferential direction to form friction grooves (not shown in the figure). When the filter plate 3 rotates counterclockwise along the friction groove, the friction groove pushes the wedge 32 to rotate until the protrusion 33 is pressed on the friction groove, driving the filter element 2 to rotate synchronously. When the filter plate 3 rotates clockwise along the friction groove, the friction groove pushes the wedge 32 to rotate, so that the protrusion 33 on the wedge 32 moves in a direction away from the friction groove, so that the wedge 32 cannot be pressed against the filter element 2, and the one-way transmission between the filter plate 3 and the filter element 2 is realized.

[0048] like Figure 5 , Figure 6 and Figure 8 As shown, a plurality of flaps 6 are arranged in the sinking groove 31, and a slide bar 61 corresponding to each flap 6 is slidably connected to the outer periphery of the mounting cylinder 4 along the vertical direction, and each flap 6 is rotatably connected to the corresponding slide bar 61, and a torsion spring (not shown in the figure) is arranged at the rotation connection. When the flap 6 is not subjected to external force, the torsion spring drives the flap 6 to be in a vertical state. An annular groove 34 is provided on the filter plate 3, and a protrusion (not shown in the figure) extending into the annular groove 34 is fixedly connected to the flap 6. When the filter plate 3 rotates, the annular groove 34 moves along the protrusion, and does not drive the flap 6 to move. When the filter plate 3 moves vertically, it drives the flap 6 to move up and down synchronously.

[0049] The filter plate 3 is fixedly connected with a support rod 35 corresponding to each flap 6, and the support rod 35 is rotatably connected with a lever 36 corresponding to each flap 6. When cleaning the filter element 2, the filter plate 3 rotates clockwise, and the lever 36 turns the flap 6 to a horizontal state, and the flap 6 blocks the notch of the sinking groove 31. During the process of the filter plate 3 scraping the filter element 2 downward, the dirt in the sinking groove 31 will not float up and drift outside the sinking groove 31; when the filter plate 3 scrapes the filter element 2 downward and moves upward, the filter plate 3 is driven to rotate counterclockwise, and the flap 6 loses the squeezing of the lever 36 and returns to a vertical state. During the process of the filter plate 3 continuing to rotate, the lever 36 will rotate relative to the support rod 35 when it hits the flap 6, so as to pass over the flap 6, so that the notch of the sinking groove 31 is in an open state, thereby scraping the dirt attached to the filter element 2 into the sinking groove 31.

[0050] like Figures 4 to 6 As shown, a sewage outlet (not shown) is provided at the bottom of the sinking tank 31, and a stopper 37 is provided at the sewage outlet. The stopper 37 is slidably connected to the sinking tank 31 along the circumference of the filter element 2, and a spring is connected between the stopper 37 and the sinking tank 31, and the spring drives the stopper 37 to block the sewage outlet. A sewage storage cylinder 14 extends downward from one side of the mounting plate 13 close to the activity space, and the bottom of the sewage storage cylinder 14 is connected to the connecting cover 51, and a driving component 3 for driving the stopper 37 to open is provided in the sewage storage cylinder 14.

[0051] The driving assembly 3 includes a mounting plate 7 fixedly connected to the dirt storage barrel 14, and a through slot (not shown in the figure) corresponding to the sewage outlet is provided on the mounting plate 7, and a second block 71 is provided in the through slot, and the second block 71 is slidably connected to the mounting plate 7 along the circumference of the filter element 2, and a spring is connected between the second block 71 and the mounting plate 7, and the spring drives the second block 71 to block the through slot. The bottom of the block 1 37 is elastically connected to the elastic block 38, and the top of the block 2 71 is connected to the convex ridge 73. During the rotation of the filter plate 3, the elastic block 38 and the convex ridge 73 cooperate to open the block 1 37 and the second block 71, so that the sewage outlet on the sinking tank 31 is opposite to the through slot on the mounting plate 7, thereby discharging the dirt collected in the sinking tank 31 into the dirt storage barrel 14. When the replaced filter element 2 needs to be taken out, the connection cover 51 on the water outlet pipe 5 is opened, and the dirt in the dirt storage cylinder 14 will be discharged from the tank body 1. Then the filter element 2 is rotated to disengage the clamping structure between the filter elements 2, and the filter element 2 can be taken out.

[0052] like Figure 2 , Figure 8 and Fig. 9As shown, the driving assembly 1 includes a motor 18 connected to the fixed plate 12, a gear 181 connected to the motor 18, and a gear 282 meshing with the gear 181, and the gear 282 is connected to the filter plate 3 through a connecting rod 83. The driving assembly 2 includes a motor 29, a bevel gear 191, a bevel gear 292 and a lead screw 93. The motor 29 is fixedly connected to the fixed plate 12, the bevel gear 191 is connected to the output end of the motor 29, the bevel gear 292 is rotatably connected to the fixed plate 12 and meshes with the bevel gear 191, and the lead screw 93 is fixedly connected to the center position of the bevel gear 292. The outer periphery of the mounting cylinder 4 is sleeved with a mounting ring 94, the lead screw 93 is threadedly matched with the mounting ring 94, and the connecting rod 83 is rotatably matched with the mounting ring 94 through the connecting ring 84.

[0053] The integrated direct drinking water multi-stage filtration and purification method uses the integrated direct drinking water multi-stage filtration and purification device in the above embodiment. The integrated direct drinking water multi-stage filtration and purification method includes the following steps:

[0054] Water enters the tank body 1 from the water inlet 11 , enters the filter element 2 located in the working space after being filtered by the filter plate 3 , and is discharged from the water outlet pipe 5 after being filtered by the filter element 2 .

[0055] When the filter element 2 located in the working space needs to be cleaned, the control motor 1 8 drives the gear 1 81 and the gear 2 82 to rotate, and the gear 2 82 drives the filter plate 3 to rotate clockwise through the connecting rod 83. At the same time, the control motor 2 9 drives the bevel gear 1 91 and the bevel gear 2 92 to rotate, and the bevel gear 2 92 drives the mounting ring 94 to move downward through the lead screw 93. The mounting ring 94 drives the filter plate 3 to move downward through the connecting ring 84 and the connecting rod 83. The sinking groove 31 on the filter plate 3 scrapes the dirt on the periphery of the filter element 2, and the water under the filter plate 3 is squeezed to move upward to the filter plate 3. The dirt scraped off moves upward along the bottom of the sinking trough 31, and driven by the water flow, passes through the filter plate 3 and enters the top of the filter plate 3. The water entering the top of the filter plate 3 enters the inside of the filter element 2 from the part of the filter element 2 located above the filter plate 3, and the impurities in the water adhere to the filter element 2. When the filter plate 3 moves downward to the preset position, the control motor 1 8 drives the filter plate 3 to rotate counterclockwise, and controls the motor 2 9 to drive the filter plate 3 to move upward. The sinking trough 31 is close to one side of the filter element 2 to scrape the dirt attached to the periphery of the filter element 2 into the sinking trough 31, so as to clean the filter element 2.

[0056] It should be noted that, during the process of the filter plate 3 rotating upward counterclockwise, since the wedge block 32 is in contact with the filter screen 24 on the filter element 2, the filter screen 24 cannot push the wedge block 32 to rotate, and therefore the wedge block 32 will not squeeze the filter element 2 to move synchronously with the filter plate 3. When the wedge block 32 is close to the top sleeve 21 of the filter element 2, the control motor 2 9 stops driving, and the filter plate 3 continues to move upward and reset, so that the wedge block 32 can move upward to the outer periphery of the top sleeve 21.

[0057] When the filter element 2 located in the working space needs to be replaced, the control motor 1 8 drives the filter plate 3 to rotate counterclockwise, and the filter plate 3 drives the filter element 2 located in the working space to rotate counterclockwise through the wedge block 32. At the same time, the control motor 2 9 drives the filter plate 3 to drive the filter element 2 located in the working space to move downward. Other filter elements 2 follow the filter element 2 located in the working space through the connection of the clamping structure and rotate and move downward synchronously. During the rotation of the filter element 2, the threaded connection between the filter element 2 and the mounting cylinder 4 is detached, and the filter element 2 located in the working space moves to the bottom of the mounting disk 7. When the filter element 2 in the mounting cylinder 4 moves to the working space and is in contact and connected with the water outlet pipe 5, the replacement is completed.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An integrated direct drinking water multi-stage filtering and purification device, comprising a tank body (1) and a filtering assembly arranged in the tank body (1), wherein the tank body (1) is provided with a water inlet (11) and a water outlet, and characterized in that: The filter assembly comprises a filter plate (3) and a plurality of filter elements (2); a mounting cylinder (4) extending into the interior of the tank body (1) is arranged at the top of the tank body (1); a mounting plate (13) is arranged inside the tank body (1); a working space for the filter element (2) is formed between the bottom of the mounting cylinder (4) and the mounting plate (13); a water outlet is detachably connected to a water outlet pipe (5); the water outlet pipe (5) is in communication with the interior of the filter element (2); and a movable space for the filter element (2) to pass through is formed between the water outlet pipe (5) and the mounting plate (13); A plurality of filter elements (2) are arranged in sequence in the vertical direction on the installation cylinder (4), and adjacent filter elements (2) are connected via a clamping structure; the inner circumferential surface of the installation cylinder (4) and the filter element (2) are threadedly connected via a threaded section (41); a driving component 1 for driving the filter element (2) to rotate and a driving component 2 for driving the filter element (2) to move downward are arranged in the tank body (1); and the filter plate (3) is located below the water inlet (11) and above the working space; When the driving component 1 drives the filter element (2) to rotate, the threaded section (41) between the filter element (2) and the mounting tube (4) is temporarily disconnected, and when the driving component 2 drives the filter element (2) to move downward, all the filter elements (2) move downward synchronously until the filter element (2) in the working space moves to the bottom of the moving space, and the filter element (2) in the mounting tube (4) moves to the working space to contact and communicate with the water outlet pipe (5).

2. The integrated direct drinking water multi-stage filtration and purification device according to claim 1 is characterized in that: A sinking groove (31) is provided at the center of the filter plate (3), the sinking groove (31) is sleeved on the outer periphery of the filter element (2) located in the working space, and a one-way transmission component is provided on a side of the sinking groove (31) close to the filter element (2); when the filter plate (3) rotates counterclockwise, the one-way transmission component drives the filter element (2) to rotate synchronously; the filter plate (3) is vertically slidably arranged in the tank body (1); the driving component 1 drives the filter plate (3) to rotate counterclockwise to drive the filter element (2) to rotate synchronously, and while rotating counterclockwise, the driving component 2 drives the filter plate (3) to move downward to drive the filter element (2) to move downward synchronously.

3. The integrated direct drinking water multi-stage filtration and purification device according to claim 2 is characterized in that: The one-way transmission assembly comprises a wedge block (32) and a spring. A mounting groove is provided on one side of the sinking groove (31) close to the filter element (2). The wedge block (32) is rotatably connected in the mounting groove. The spring is connected between the wedge block (32) and the mounting groove. A protrusion (33) extends from the wedge block (32). The spring pushes one side of the protrusion (33) of the wedge block (32) to fit the outer periphery of the filter element (2). Friction grooves are evenly spaced along the circumference of the outer periphery of the filter element (2) near the top. When the filter plate (3) rotates counterclockwise along the friction groove, the friction groove pushes the wedge block (32) to rotate until the protrusion (33) is pressed on the friction groove, thereby driving the filter element (2) to rotate synchronously.

4. The integrated direct drinking water multi-stage filtration and purification device according to claim 2 is characterized in that: A plurality of flaps (6) are arranged in the sinking groove (31), and a slide bar (61) corresponding to each flap (6) is vertically slidably connected to the outer periphery of the mounting cylinder (4), and each flap (6) is rotatably connected to the corresponding slide bar (61), and a torsion spring is arranged at the rotatable connection. When the flap (6) is not subjected to an external force, the torsion spring drives the flap (6) to be in a vertical state. An annular groove (34) is provided on the filter plate (3), and a protrusion extending into the annular groove (34) is fixedly connected to the flap (6). A lever (36) corresponding to each flap (6) is rotatably connected to the filter plate (3). When the filter plate (3) rotates clockwise, the lever (36) drives the flap (6) to flip to a horizontal state, and when the filter plate (3) rotates counterclockwise, the lever (36) rotates over the flap (6).

5. The integrated direct drinking water multi-stage filtration and purification device according to claim 2 is characterized in that: A sewage outlet is provided at the bottom of the sinking groove (31), and a stopper 1 (37) is arranged at the sewage outlet. The stopper 1 (37) is slidably connected to the sinking groove (31) along the circumference of the filter element (2), and a spring is connected between the stopper 1 (37) and the sinking groove (31). The spring drives the stopper 1 (37) to block the sewage outlet. A sewage storage cylinder (14) extends downward from one side of the mounting plate (13) close to the activity space, and a driving component 3 for driving the stopper 1 (37) to open is arranged in the sewage storage cylinder (14).

6. The integrated multi-stage filtration and purification device for direct drinking water according to claim 5 is characterized in that: The driving assembly three comprises a mounting plate (7) fixedly connected to the dirt storage cylinder (14); a through groove corresponding to the dirt discharge port is formed on the mounting plate (7); a second stopper (71) is arranged in the through groove; the second stopper (71) is slidably connected to the mounting plate (7) along the circumference of the filter element (2); a spring is connected between the second stopper (71) and the mounting plate (7); the spring drives the second stopper (71) to block the through groove; the bottom of the first stopper (37) is elastically connected to an elastic block (38); the top of the second stopper (71) is connected to a convex ridge (73); when the filter plate (3) rotates, the elastic block (38) and the convex ridge (73) cooperate to open the first stopper (37) and the second stopper (71).

7. The integrated direct drinking water multi-stage filtration and purification device according to claim 6 is characterized in that: A connection cover (51) is fixedly connected to the outer periphery of the water outlet pipe (5); the connection cover (51) is threadedly connected to the bottom of the tank body (1); and the bottom of the dirt storage cylinder (14) is in communication with the connection cover (51).

8. The integrated multi-stage filtration and purification device for direct drinking water according to claim 2 is characterized in that: The threaded section (41) is arranged at a position close to the bottom of the inner circumference of the mounting cylinder (4) and at a position close to the bottom of the outer circumference of each filter element (2). A fixing plate (12) is fixedly connected inside the tank body (1). The driving assembly 1 comprises a motor 1 (8) connected to the fixing plate (12), a gear 1 (81) connected to the motor 1 (8), and a gear 2 (82) meshing with the gear 1 (81). The gear 2 (82) is connected to the filter plate (3) via a connecting rod (83).

9. The integrated multi-stage filtration and purification device for direct drinking water according to claim 8 is characterized in that: The clamping structure comprises a clamping groove (25) and a clamping block (26); the clamping groove (25) comprises a transverse portion and a vertical portion; the clamping groove (25) is disposed on a side wall of the filter element (2) near the bottom; the clamping block (26) is fixedly connected to an inner peripheral surface of the filter element (2) near the top; when the filter element (2) rotates counterclockwise, the clamping block (26) is located in the transverse portion; the second drive assembly comprises a second motor (9) and a lead screw (93); a mounting ring (94) is sleeved on the outer periphery of the mounting cylinder (4); the lead screw (93) is threadedly engaged with the mounting ring (94); and the connecting rod (83) is rotationally engaged with the mounting ring (94) via the connecting ring (84).

10. An integrated multi-stage filtration and purification method for direct drinking water, characterized in that: Using the integrated direct drinking water multi-stage filtration and purification device according to any one of claims 1 to 9, the integrated direct drinking water multi-stage filtration and purification method comprises the following steps: Water enters the tank body (1) from the water inlet (11), is filtered by the filter plate (3), and then enters the filter element (2) located in the working space. After being filtered by the filter element (2), the water is discharged from the water outlet pipe (5).

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