Double-rotating leak-proof filtering device and water purifier

Abstract

The present invention discloses a double-rotating anti-leakage filtering device and a water purifier, wherein the filtering device comprises a waterway plate and a filter element mounted on the waterway plate, wherein the waterway plate is provided with a first water flow channel and a first rotating seat rotatably used in the waterway plate for opening or closing the first water flow channel; the filter element is provided with a second water flow channel and a second rotating seat rotatably used in the filter element for opening or closing the second water flow channel; the first rotating seat of the waterway plate and the second rotating seat of the filter element can be connected and connected, and the connection between the first water flow channel and the second water flow channel can be opened or closed after rotation. The present invention enables the filtering device of the water purifier to have a double-rotating anti-leakage function, and realizes the function that the water purifier will not leak when the filter element is directly replaced in the standby state without turning off the water source and power supply and without pressure relief.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering equipment, and in particular to a double-rotating leak-proof filtering device and a water purifier. Background Art

[0002] Although the current household tap water is processed by the water plant, it still contains small particles of impurities, such as organic matter, heavy metal ions, iron filings, etc. after being transported to the home through the pipeline network. Long-term consumption of these impurities is harmful to human health, so household water purifiers came into being.

[0003] A water purifier generally includes a housing and a filtering device disposed in the housing. The filtering device generally consists of a waterway plate and a filter element mounted on the waterway plate. The filter element and the waterway plate are connected by plugging, snapping or screwing.

[0004] External raw water flows in from the waterway plate, then flows into the filter element through the waterway plate, and the raw water is filtered by the filter element to obtain clean water, which then flows out through the waterway plate.

[0005] The existing water channel plate is directly connected to the water flow channel in the filter element without a leak-proof mechanism. In this way, after the filter element is taken out, the water in the water channel plate and the filter element will overflow and leak, affecting the user experience.

[0006] Therefore, the prior art needs to be improved. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to propose a double-rotating leak-proof filtering device and a water purifier, aiming to make the filtering device of the water purifier have a double-rotating leak-proof function, so that the water purifier can be in standby mode without turning off the water source and power supply and without releasing the pressure, and the filter element will not leak when it is directly replaced.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A double-rotating anti-leakage filtering device comprises a waterway plate and a filter element mounted on the waterway plate, wherein:

[0010] The waterway plate is provided with a first water flow channel and a first rotating seat rotatably used for opening or closing the first water flow channel in the waterway plate;

[0011] The filter element is provided with a second water flow channel and a second rotating seat rotatably used for opening or closing the second water flow channel in the filter element;

[0012] The first rotating seat of the waterway plate and the second rotating seat of the filter element can be connected and connected, and the connection between the first water flow channel and the second water flow channel can be opened or closed after rotation.

[0013] The filter element is screwed into and installed on the waterway plate, and opens or closes the connection between the first water flow channel and the second water flow channel by rotating in the same direction twice in succession.

[0014] The waterway plate includes a first fixed seat and a first rotating seat in contact with the first fixed seat, the first fixed seat is provided with a filter element installation opening for installing the first rotating seat, the first water flow channel passes through the first fixed seat and the first rotating seat, and the first rotating seat rotates relative to the first fixed seat in the filter element installation opening to open or close the first water flow channel;

[0015] The filter element includes a cylinder and a second fixed seat arranged in the cylinder, and a second rotating seat in contact with the second fixed seat. The second water flow channel passes through the second fixed seat and the second rotating seat. The second rotating seat rotates relative to the second fixed seat in the cylinder to open or close the second water flow channel.

[0016] The first fixed seat is provided with a first rotation limiting groove in the filter element installation opening, and a first limiting rod is provided on the lower end surface of the first rotating seat. The first limiting rod is inserted into the first rotation limiting groove and rotates within a preset length range of the first rotation limiting groove so that the first rotating seat rotates relative to the first fixed seat within the range.

[0017] A second rotation limit groove is provided on the lower end surface of the second fixed seat, and a second limit rod is provided on the upper end surface of the second rotating seat. The second limit rod is inserted into the second rotation limit groove and rotates within a preset length range of the second rotation limit groove so that the second rotating seat rotates relative to the second fixed seat within this range.

[0018] Wherein, the first water flow channel is provided with a first fixed seat water inlet hole and a first fixed seat water outlet hole on the first fixed seat, and a first rotating seat water inlet hole and a first rotating seat water outlet hole are provided on the first rotating seat, and when the first rotating seat rotates relative to the first fixed seat, the first fixed seat water inlet hole and the first rotating seat water inlet hole, and the first fixed seat water outlet hole and the first rotating seat water outlet hole are aligned or staggered;

[0019] The second water flow channel is provided with a second fixed seat water inlet hole and a second fixed seat water outlet hole on the second fixed seat, and a second rotating seat water inlet hole and a second rotating seat water outlet hole are provided on the second rotating seat. When the second rotating seat rotates relative to the second fixed seat, the second fixed seat water inlet hole and the second rotating seat water inlet hole, and the second fixed seat water outlet hole and the second rotating seat water outlet hole are aligned or staggered.

[0020] Among them, the first rotating seat is upwardly extended to be provided with a water inlet connecting column and a water outlet connecting column connected with the first rotating seat water inlet hole and the first rotating seat water outlet hole, and the second rotating seat is downwardly extended to be provided with a water inlet connecting hole and a water outlet connecting hole connected with the second rotating seat water inlet hole and the second rotating seat water outlet hole, the water inlet connecting column is plug-connected to the water inlet connecting hole, and the water outlet connecting column is plug-connected to the water outlet connecting hole.

[0021] Wherein, the first fixing seat is connected to the filter element installation port with a hollow cover plate for shielding the first rotating seat, the inner side wall of the cover plate is circumferentially provided with a first screw-in angular groove and a second screw-in angular groove, the first screw-in angular groove is provided with a first positioning opening and a first positioning wall, and the second screw-in angular groove is provided with a second positioning opening and a second positioning wall;

[0022] A connecting portion is provided at the lower end of the cylinder, and a first screw-in protrusion and a second screw-in protrusion are circumferentially spaced apart on the connecting portion. A first positioning block and a second positioning block are respectively provided on the first screw-in protrusion and the second screw-in protrusion. The first positioning block is installed from the first positioning port so that the first screw-in protrusion is screwed into the first screw-in inclined groove, and the second positioning block is installed from the second positioning port so that the second screw-in protrusion is screwed into the second screw-in inclined groove.

[0023] Wherein, the distance between the first positioning opening and the first positioning wall is different from the distance between the second positioning opening and the second positioning wall.

[0024] Wherein, the waterway plate further comprises a hollow pressing plate arranged between the first rotating seat and the cover plate, the pressing plate covers the first rotating seat, and the cover plate presses the pressing plate;

[0025] The filter element also includes a bracket arranged in the cylinder, a filter screen or filter membrane arranged on the bracket, a connection nozzle arranged in the cylinder to connect the bracket and the second fixed seat, and a hollow retaining ring arranged on the lower end surface of the cylinder to shield the second rotating seat;

[0026] A plurality of first sealing rings are provided at the connection of the first water flow channel between the first fixed seat and the first rotating seat;

[0027] A plurality of second sealing rings are provided at the connection of the second water flow channel between the second fixed seat and the second rotating seat.

[0028] The present invention further provides a water purifier, comprising a shell, wherein the aforementioned double-rotating anti-leakage filtering device is arranged inside the shell.

[0029] The double-rotating anti-leakage filter device of the present invention is provided with a rotatable first rotating seat in the waterway plate and a rotatable second rotating seat in the filter element. After the filter element is installed on the waterway plate, the first rotating seat and the second rotating seat are connected and connected, and the connection between the first water flow channel of the waterway plate and the second water flow channel of the filter element is opened or closed by the rotation movement of the first rotating seat and the second rotating seat. In this way, when taking out the filter element, it is necessary to first rotate the first rotating seat and the second rotating seat to respectively close the first water flow channel and the second water flow channel, and then remove the filter element. At this time, the filter element and the waterway plate will not leak. When installing the filter element, the first rotating seat and the second rotating seat are first connected, and then the first water flow channel and the second water flow channel can be opened by rotating in the opposite direction along the original rotation direction, so that the filter device can normally enter and exit water, and realize the function that the water purifier is in standby state, does not turn off the water source and power supply, does not need to release pressure, and directly replaces the filter element without leaking. The filter device of the present invention has a double rotation function because the first rotating seat and the second rotating seat can rotate, and the waterway plate and the filter element both have independent anti-leakage functions, which is convenient for the disassembly and maintenance of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of a first embodiment of a double-rotating anti-leakage filtering device of the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the structural filter element being rotated twice and installed on the waterway plate;

[0033] Figure 3 for Figure 1 Schematic diagram of the structure.

[0034] Figure 4 It is a structural schematic diagram of a second embodiment of the double-rotating leakage-proof filtering device of the present invention;

[0035] Figure 5 for Figure 3 Schematic diagram of the exploded structure of the waterway plate;

[0036] Figure 6 for Figure 5 An exploded schematic diagram of the first fixed seat and the first rotating seat;

[0037] Figure 7 for Figure 3An exploded schematic diagram of the second fixed seat and the second rotating seat;

[0038] Figure 8 for Figure 3 An exploded schematic diagram of the first rotating seat and the second rotating seat;

[0039] Fig. 9 for Figure 5 A schematic diagram of the top view of the middle cover;

[0040] Fig.10 for Figure 5 A schematic diagram of a side view of the middle cover;

[0041] Fig.11 for Figure 5 A schematic diagram of the bottom view of the middle cover;

[0042] Fig.12 It is a schematic diagram of the first partial structure of the bottom of the filter element;

[0043] Fig.13 It is a schematic diagram of the second partial structure of the bottom of the filter element;

[0044] Fig.14 It is a structural schematic diagram of a first embodiment of the water purifier of the present invention;

[0045] Fig.15 It is a schematic diagram of the internal structure of the water purifier of the present invention.

[0046] Description of reference numerals:

[0047] 100-filter device, 1-waterway plate, 11-first water flow channel, 111-water inlet hole of the first fixed seat, 112-water outlet hole of the first fixed seat, 113-water inlet hole of the first rotating seat, 114-water outlet hole of the first rotating seat, 12-first rotating seat, 121-first limiting rod, 122-water inlet connecting column, 123-water outlet connecting column, 124-wastewater connecting column, 13-first fixed seat, 131-filter element installation port, 132-first rotation limiting groove, 14-cover plate, 141-first screw-in inclined groove, 1411-first positioning port, 1412-first positioning wall, 142-second screw-in inclined groove, 1421-second positioning port, 1422-second positioning wall, 1431-guide inclined block, 1432-spiral groove, 1433-first block, 1434-second block, 15-pressing plate, 2-filter element , 21-second water flow channel, 211-second fixed seat water inlet hole, 212-second fixed seat water outlet hole, 213-second rotating seat water inlet hole, 214-second rotating seat water outlet hole, 22-second rotating seat, 221-second limiting rod, 222-water inlet connecting hole, 223-water outlet connecting hole, 224-wastewater connecting hole, 23-second fixed seat, 231-second rotation limiting groove, 24-cylinder, 25-connecting part, 251-first screw-in protrusion, 2511-first positioning block, 252-second screw-in protrusion, 2521-second positioning block, 253-oblique protrusion, 254-transverse protrusion, 26-bracket, 27-filter screen or filter membrane, 28-connecting nozzle, 29-retaining ring, 31-first sealing ring, 32-second sealing ring, 300-water purifier, 301-shell, 302-tourmaline active water device. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0052] Please refer to Figures 1 to 3 The present invention provides a double-rotating anti-leakage filtering device 100, comprising a waterway plate 1 and a filter element 2 installed on the waterway plate 1. The waterway plate 1 is used to connect an external water inlet and outlet pipe, and is used to install and connect the filter element 2 to provide raw water to the filter element 2 and receive the clean water flowing out of the filter element 2. A filter screen or a filter membrane is arranged in the filter element 2 to filter and purify the incoming water.

[0053] The waterway plate 1 is provided with a first water flow channel 11, and a first rotating seat 12 rotatably used to open or close the first water flow channel 11 in the waterway plate 1. That is, after the first rotating seat 12 of the waterway plate 1 rotates a certain angle, the first water flow channel 11 of the waterway plate 1 will be opened or closed, thereby opening or closing the external water inlet and outlet. When closed, it prevents the position on the waterway plate 1 connected to the filter element 2 from leaking after the filter element 2 on the waterway plate 1 is removed.

[0054] The filter element 2 is provided with a second water flow channel 21, and a second rotating seat 22 rotatably used to open or close the second water flow channel 21 in the filter element 2. That is, after the second rotating seat 22 of the filter element 2 rotates a certain angle, the second water flow channel 21 of the filter element 2 will be opened or closed, thereby opening the water inlet and outlet of the waterway plate 1 and the filter element 2, or closing the water inlet and outlet of the waterway plate 1 and the filter element 2. When closed, it prevents water from leaking out from the connection position between the filter element 2 and the waterway plate 1 after the filter element 2 is removed.

[0055] The first rotating seat 12 of the waterway plate 1 and the second rotating seat 22 of the filter element 2 can be connected and connected, and the connection between the first water flow channel 11 and the second water flow channel 21 can be turned on or off after rotation. That is, the waterway plate 1 and the filter element 2 of the filter device 100 of the present invention are connected through the first rotating seat 12 and the second rotating seat 22, and then the first water flow channel 11 and the second water flow channel 21 are completely connected or completely turned off after the first rotating seat 12 and the second rotating seat 22 are rotated. Only after they are completely connected, water can flow from the waterway plate 1 into the filter element 2. If it is not completely connected, such as the first water flow channel 11 is already connected after the first rotating seat 12 rotates a certain angle, but the second rotating seat 22 does not rotate so that the second water flow channel 21 is still in a closed state, then water can flow out of the waterway plate 1, but cannot flow into the filter element 2, and is blocked by the first rotating seat 22 of the filter element. The same is true for the shutdown situation. If it is not completely shut down, such as the second water flow channel 12 has been shut off after the second rotating seat 22 rotates a certain angle, but the first rotating seat 12 has not rotated so that the first water flow channel 21 is still in a conductive state, then after the filter element 2 is removed, water can overflow from the waterway plate 1.

[0056] The filter device 100 of the present invention has a dual rotation function because the waterway plate 1 and the filter element 2 are respectively provided with a rotatable first rotating seat 12 and a second rotating seat 22. In addition, the waterway plate and the filter element both have independent leak-proof functions, that is, after the filter element 2 is removed, the filter element 2 will not leak, and the waterway plate 1 will not leak either. In this way, when the water purifier is in standby mode, the water source and power supply do not need to be turned off, and the pressure does not need to be released, and the filter element 2 can be directly replaced without leaking.

[0057] At the same time, due to the coordinated use of the first rotating seat 12 and the second rotating seat 22, the filter device 100 of the present invention has the functions of combined leakage prevention and combined conduction, that is, when the filter element 2 is removed for leakage prevention, the first rotating seat 12 and the second rotating seat 22 need to be rotated to shut off various water flow channels, and when conducting, the first rotating seat 12 and the second rotating seat 22 need to be rotated to conduct various water flow channels, and rotating the first rotating seat 12 or the second rotating seat 22 alone cannot complete the shutoff or conduction function.

[0058] When removing the filter element 2 from the filter device 100 of the present invention, it is necessary to first rotate the second rotating seat 22 and the first rotating seat 12 to respectively shut off the second water flow channel 21 and the first water flow channel 11, and then remove the filter element 2. At this time, the filter element 2 and the waterway plate 1 will not leak. When installing the filter element 2, first connect the second rotating seat 22 and the first rotating seat 12, and then rotate them in the opposite direction along the original rotation direction to conduct the first water flow channel 11 and the second water flow channel 12, so that the filter device 100 can normally inlet and outlet water. The double-rotation leak-proof method of the filter device 100 of the present invention facilitates the disassembly and maintenance of the filter element 2.

[0059] Furthermore, if Figure 2 As shown, the filter element 2 of the filter device 100 of the present invention is screwed into and installed on the waterway plate 1, and opens or closes the connection between the first water flow channel 11 and the second water flow channel 21 by rotating in the same direction twice in succession.

[0060] The two identical rotations are that the first rotating seat 12 rotates by a first angle first, and then the second rotating seat 22 rotates by a second angle along the rotation direction; or, the second rotating seat 22 rotates by a first angle first, and then the first rotating seat 12 rotates by a second angle along the rotation direction.

[0061] When conducting, the second rotating seat 22 rotates clockwise by a first angle, and the first rotating seat 12 rotates clockwise by a second angle based on the first angle. The sum of the first angle and the second rotation angle can be 90 degrees.

[0062] As an implementation method, Figure 2 As shown, move the filter element 2 downward to align with the installation position of the waterway plate 1, then rotate the filter element 2 clockwise as a whole, so that the second rotating seat 22 rotates 45 degrees, and then rotate the filter element 2 clockwise as a whole again, so that the first rotating seat 22 rotates another 45 degrees. After the two rotate clockwise for a total of 90 degrees, the first water flow channel 11 and the second water flow channel 21 are completely connected. If the filter element 2 is removed, rotate the filter element 2 in the opposite direction.

[0063] The waterway plate 1 of the present invention can be as follows Figure 1 The structure only has one filter element 2 installed, or it can be as follows Figure 4 The integrated structure is used to install multiple filter elements 2.

[0064] Specifically, as shown in Figure 3, the waterway plate 1 includes a first fixed seat 13 and a first rotating seat 12 in contact with the first fixed seat 13, and a filter element mounting port 131 is provided on the first fixed seat 13 to mount the first rotating seat 12. The first water flow channel 11 passes through the first fixed seat 13 and the first rotating seat 12. The first rotating seat 12 rotates relative to the first fixed seat 13 in the filter element mounting port 131 to open or close the first water flow channel 11.

[0065] The filter element 2 includes a cylinder 24 and a second fixed seat 23 arranged in the cylinder 24, and a second rotating seat 22 in contact with the second fixed seat 23. The second water flow channel 21 passes through the second fixed seat 23 and the second rotating seat 22. The second rotating seat 22 rotates relative to the second fixed seat 23 in the cylinder 24 to open or close the second water flow channel 21.

[0066] Furthermore, if Figure 5 and Figure 6As shown, the first water flow channel 11 is provided with a first fixed seat water inlet hole 111 and a first fixed seat water outlet hole 112 on the first fixed seat 13, and a first rotating seat water inlet hole 113 and a first rotating seat water outlet hole 114 on the first rotating seat 12. When the first rotating seat 12 rotates relative to the first fixed seat 13, the first fixed seat water inlet hole 111 and the first rotating seat water inlet hole 113, the first fixed seat water outlet hole 112 and the first rotating seat water outlet hole 114 are aligned or staggered. When the first fixed seat water inlet hole 111 and the first rotating seat water inlet hole 113, the first fixed seat water outlet hole 112 and the first rotating seat water outlet hole 114 are aligned, the first water flow channel 11 of the waterway plate 1 is connected and water flows in and out normally; when the first fixed seat water inlet hole 111 and the first rotating seat water inlet hole 113, the first fixed seat water outlet hole 112 and the first rotating seat water outlet hole 114 are staggered, the first water flow channel 11 of the waterway plate 1 is closed to prevent leakage.

[0067] like Figure 7 As shown, the second water flow channel 21 is provided with a second fixed seat water inlet hole 211 and a second fixed seat water outlet hole 212 on the second fixed seat 23, and a second rotating seat water inlet hole 213 and a second rotating seat water outlet hole 214 on the second rotating seat 22. When the second rotating seat 22 rotates relative to the second fixed seat 23, the second fixed seat water inlet hole 211 and the second rotating seat water inlet hole 213, the second fixed seat water outlet hole 212 and the second rotating seat water outlet hole 214 are aligned or staggered. When the second fixed seat water inlet hole 211 and the second rotating seat water inlet hole 213, the second fixed seat water outlet hole 212 and the second rotating seat water outlet hole 214 are aligned, the second water flow channel 21 of the filter element 2 is conducted and water enters and exits normally; when the second fixed seat water inlet hole 211 and the second rotating seat water inlet hole 213, the second fixed seat water outlet hole 212 and the second rotating seat water outlet hole 214 are staggered, the second water flow channel 21 of the filter element 2 is closed to prevent leakage.

[0068] Preferably, the first water flow channel 11 may also be provided with a waste water hole penetrating the first fixed seat 13 and the first rotating seat 12 ; the second water flow channel 21 may also be provided with a waste water hole penetrating the second fixed seat 23 and the second rotating seat 22 .

[0069] Preferably, if Figure 6 As shown, the first fixed seat 13 is provided with a first rotation limit groove 132 in the filter element installation port 131, and the lower end surface of the first rotating seat 12 is provided with a first limit rod 121, and the first limit rod 121 is inserted into the first rotation limit groove 132 and rotates within a preset length range of the first rotation limit groove 132 so that the first rotating seat 12 rotates relative to the first fixed seat 13 within this range.

[0070] like Figure 7As shown, a second rotation limit groove 231 is provided on the lower end surface of the second fixed seat 23, and a second limit rod 221 is provided on the upper end surface of the second rotating seat 22. The second limit rod 221 is inserted into the second rotation limit groove 231 and rotates within a preset length range of the second rotation limit groove 231 so that the second rotating seat 22 rotates relative to the second fixed seat 23 within this range.

[0071] Preferably, the first rotation limiting groove 132 and the second rotation limiting groove 231 are both arc grooves. For example, the first rotation limiting groove 132 is an arc groove with a preset arc length of 45 degrees at a rotation angle, and the second rotation limiting groove 231 is also an arc groove with a preset arc length of 4.5 degrees at a rotation angle.

[0072] The arrangement of the first limiting rod 121 and the first rotation limiting groove 132 and the arrangement of the second limiting rod 221 and the second rotation limiting groove 231 enables the first rotating seat 12 and the second rotating seat 22 to be accurately rotated to the right position, so that the on and off control is accurate.

[0073] like Figure 8 As shown, the first rotating seat 12 of the filter device 100 of the present invention extends upwards and is provided with a water inlet connection column 122 and a water outlet connection column 123 connected with the first rotating seat water inlet hole 113 and the first rotating seat water outlet hole 114, and the second rotating seat 22 extends downwards and is provided with a water inlet connection hole 222 and a water outlet connection hole 223 connected with the second rotating seat water inlet hole 213 and the second rotating seat 22 water outlet hole 214, the water inlet connection column 122 is plug-connected with the water inlet connection hole 222, and the water outlet connection column 123 is plug-connected with the water outlet connection hole 223. When the filter element 2 is installed on the waterway plate 1, the water inlet connection column 122 and the water inlet connection hole 222, and the water outlet connection column 123 and the water outlet connection hole 223 are first connected by plugging the first rotating seat 12 and the second rotating seat 22.

[0074] Preferably, a wastewater connection column 124 is further provided on the first rotating seat 12, and a wastewater connection hole 224 is further provided on the second rotating seat 22, and the two are plug-connected and used for a filter element 2 with a wastewater discharge function, such as an RO membrane filter element.

[0075] Combination Figure 3 and Figures 9 to 11 The first fixing seat 13 of the waterway plate 1 of the present invention is connected to a hollow cover plate 14 for shielding the first rotating seat 12 on the filter element installation port 131, and the hollow cover plate 14 exposes the water inlet connection column 122 and the water outlet connection column 123. The inner side wall of the cover plate 14 is provided with a first screw-in chute 141 and a second screw-in chute 142 at intervals in an annular direction, and the first screw-in chute 141 is provided with a first positioning port 1411 and a first positioning wall 1412 at intervals, and the second screw-in chute 142 is provided with a second positioning port 1421 and a second positioning wall 1422 at intervals.

[0076] like Fig.12 and Fig.13 As shown, the lower end of the barrel 24 of the filter element 2 of the present invention is provided with a connecting portion 25, and the connecting portion 25 is annularly spaced with a first screw-in protrusion 251 and a second screw-in protrusion 252, and the first screw-in protrusion 251 and the second screw-in protrusion 252 are respectively provided with a first positioning block 2511 and a second positioning block 2521, the first positioning block 2511 is installed from the first positioning port 1411 so that the first screw-in protrusion 251 is screwed into the first screw-in chute 141, and the second positioning block 2521 is installed from the second positioning port 1421 so that the second screw-in protrusion 252 is screwed into the second screw-in chute 142.

[0077] That is, the connecting portion 25 of the barrel 24 of the filter element 2 of the present invention is provided with a first screw-in protrusion 251 and a second screw-in protrusion 252 to be screwed into the first screw-in bevel groove 141 and the second screw-in bevel groove 142 installed on the cover plate 14 of the waterway plate 1 respectively, and is positioned and installed from the first positioning port 1411 through the first positioning block 2511 and the second positioning port 1421 through the second positioning block 2521.

[0078] Specifically, the first screw-in slant groove 141 and the second screw-in slant groove 142 both include a guide slant block 1431, a spiral groove 1432 arranged in the screw-in direction of the guide slant block 1431, and a first stopper 1433 and a second stopper 1434 arranged at the end of the spiral groove 1432; the first positioning opening 1411, the first positioning wall 1412 or the second positioning opening 1421, the second positioning wall 1422 are arranged at the head end of the spiral groove 1432. The first screw-in protrusion 251 and the second screw-in protrusion 252 both include an oblique protrusion 253 and a transverse protrusion 254 connected to the lower end of the oblique protrusion 253, and the first positioning block 2511 or the second positioning block 2521 is arranged on the transverse protrusion 254.

[0079] During screwing and installation, the first positioning block 2511 of the first screwing-in protrusion 251 is first aligned with the first positioning opening of the first screwing-in slant groove 141 and installed into 1411, and the second positioning block 2521 of the second screwing-in protrusion 252 is first aligned with the first positioning opening of the second screwing-in slant groove 142 and installed into 1421, and then rotated, so that the transverse protrusion 254 of the first screwing-in protrusion 251 and the second screwing-in protrusion 252 are screwed into the corresponding spiral groove 1432, and the first positioning block 2511 abuts against the first stopper 1433 in the first screwing-in slant groove 141, and the end of the transverse protrusion 254 abuts against the second stopper 1434 in the first screwing-in slant groove 141. The second screwing-in protrusion 252 performs the same screwing-in action in the second screwing-in slant groove 142 at the same time.

[0080] Preferably, the spacing between the first positioning opening 1411 of the first screw-in chute 141 and the first positioning wall 1412 is different from the spacing between the second positioning opening 1421 of the second screw-in chute 142 and the second positioning wall 1422. Correspondingly, the distance between the first positioning block 2511 and the end of the transverse protrusion 254 of the first screw-in protrusion 251 is different from the distance between the second positioning block 2521 and the end of the transverse protrusion 254 of the second screw-in protrusion 252. In this way, the installation position of the filter element 2 is fixed and can only be installed at the set position, so as to avoid the water inlet connection column 122 and the water outlet connection column 123 on the first rotating seat 12 and the water inlet connection hole 222 and the water outlet connection hole 223 on the second rotating seat 22 being interchanged and connected incorrectly.

[0081] Please continue to refer to Figure 3 The waterway plate 1 of the filter device 100 of the present invention further includes a hollow pressing plate 15 disposed between the first rotating seat 12 and the cover plate 14. The pressing plate 15 covers the first rotating seat 12, and the cover plate 14 presses the pressing plate 15. The pressing plate 15 can prevent the first rotating seat 12 from escaping from the first fixed seat 13. The pressing plate 15 and the first rotating seat 12 are in a non-pressing state, so that the first rotating seat 12 can rotate.

[0082] The filter element 2 further includes a bracket 26 disposed in the barrel 24, a filter screen or filter membrane 27 disposed on the bracket 26, a connection nozzle 28 disposed in the barrel 24 to connect the bracket 26 and the second fixed seat 23, and a hollow retaining ring 29 disposed on the lower end surface of the barrel 24 to block the second rotating seat 22. The retaining ring 29 can block the second rotating seat 22 to prevent it from escaping from the barrel 24, and at the same time, the retaining ring 29 will not press the second rotating seat 22 so that the second rotating seat 22 can rotate relative to the second fixed seat 23 in the barrel 24.

[0083] Preferably, if Figure 6 As shown, a plurality of first sealing rings 31 are provided at the connection of the first water flow channel 11 between the first fixed seat 13 and the first rotating seat 12 .

[0084] like Figure 7 As shown, a plurality of second sealing rings 32 are provided at the connection of the second water flow channel 21 between the second fixed seat 23 and the second rotating seat 22 .

[0085] The provision of the first sealing ring 31 and the second sealing ring 32 improves the sealing performance of the first water flow channel 11 and the second water flow channel 21 .

[0086] like Figure 14 to Figure 15As shown, the present invention further provides a water purifier 300, including a housing 301, wherein the housing 301 is provided with the above-mentioned double-rotating anti-leakage filter device 100. Since the water purifier 300 of the present invention is provided with the double-rotating anti-leakage filter device 100, when the filter element 2 is replaced, after the filter element 2 is removed, neither the waterway plate 1 nor the filter element 2 will leak.

[0087] Preferably, if Fig.15 As shown, a plurality of filter elements 2 are arranged in the water purifier 300 of the present invention, including an ultrafiltration filter element, a pre-activated carbon filter element, an RO membrane filter element and a post-activated carbon filter element which are connected in series in sequence.

[0088] The water purifier 300 of the present invention obtains highly pure water after filtering by four filter elements to ensure the health and safety of drinking water for human body.

[0089] The four filter elements 2 of the water purifier 300 of the present invention can be installed on the top of the shell 301. In this way, when installing and removing the filter element 2 of the water purifier 300 of the present invention, there is no need to disassemble the entire shell 301, so that the filter element 2 can be installed and replaced quickly and conveniently.

[0090] Furthermore, if Fig.15 As shown, a tourmaline water activating device 302 is also provided in the housing 301 of the water purifier 300 of the present invention. Specifically, the tourmaline water activating device 302 can activate the purified water so that the purified water has a water molecule cluster structure that is most beneficial to human health.

[0091] The double-rotating leak-proof filter device 100 and the water purifier 300 proposed in the embodiment of the present invention are provided with a rotatable first rotating seat 12 in the waterway plate 1 and a rotatable second rotating seat 22 in the filter element 2. After the filter element 2 is installed on the waterway plate 1, the first rotating seat 12 and the second rotating seat 22 are connected and connected, and the connection between the first water flow channel 11 of the waterway plate 1 and the second water flow channel 21 of the filter element 2 is turned on or off by the rotational movement of the first rotating seat 12 and the second rotating seat 22. When the filter element 2 is taken out of the filter device 100 of the present invention, the first rotating seat 12 and the second rotating seat 22 are first rotated to respectively turn off the first water flow channel 11 and the second water flow channel 21, and then the filter element 2 is removed, so that the filter element 2 and the waterway plate 1 will not leak. The function of the water purifier in the standby state without turning off the water source and power supply and without releasing the pressure, and directly replacing the filter element will not leak. The filter device 100 of the present invention has a dual rotation function because both the first rotating seat 12 and the second rotating seat 22 can rotate, and the waterway plate 1 and the filter element 2 both have independent leak-proof functions, which facilitates the disassembly, assembly and maintenance of the filter element 2.

[0092] The above description is only an example to clearly illustrate the present invention, and does not limit the patent scope of the present invention. It is impossible to list all the implementation methods here. All equivalent structural changes made by using the contents of the technical solution of the present invention under the concept of the present invention, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A double-rotating anti-leakage filtering device, comprising a waterway plate and a filter element mounted on the waterway plate, characterized in that: The waterway plate is provided with a first water flow channel and a first rotating seat rotatably used for opening or closing the first water flow channel in the waterway plate; The filter element is provided with a second water flow channel and a second rotating seat rotatably used for opening or closing the second water flow channel in the filter element; The first rotating seat of the waterway plate and the second rotating seat of the filter element can be connected and connected, and the connection between the first water flow channel and the second water flow channel can be opened or closed after rotation; The waterway plate includes a first fixed seat and a first rotating seat in contact with the first fixed seat, the first fixed seat is provided with a filter element installation opening for installing the first rotating seat, the first water flow channel passes through the first fixed seat and the first rotating seat, and the first rotating seat rotates relative to the first fixed seat in the filter element installation opening to open or close the first water flow channel; The filter element comprises a cylinder, a second fixed seat arranged in the cylinder, and a second rotating seat in contact with the second fixed seat, the second water flow channel passes through the second fixed seat and the second rotating seat, and the second rotating seat rotates relative to the second fixed seat in the cylinder to open or close the second water flow channel; The first fixed seat is provided with a first rotation limiting groove in the filter element installation opening, and a first limiting rod is provided on the lower end surface of the first rotating seat. The first limiting rod is inserted into the first rotation limiting groove and rotates within a preset length range of the first rotation limiting groove so that the first rotating seat rotates relative to the first fixed seat within the range; A second rotation limiting groove is provided on the lower end surface of the second fixed seat, and a second limiting rod is provided on the upper end surface of the second rotating seat. The second limiting rod is inserted into the second rotation limiting groove and rotates within a preset length range of the second rotation limiting groove so that the second rotating seat rotates relative to the second fixed seat within the range; The first water flow channel is provided with a first fixed seat water inlet hole and a first fixed seat water outlet hole on the first fixed seat, and a first rotating seat water inlet hole and a first rotating seat water outlet hole are provided on the first rotating seat. When the first rotating seat rotates relative to the first fixed seat, the first fixed seat water inlet hole and the first rotating seat water inlet hole, and the first fixed seat water outlet hole and the first rotating seat water outlet hole are aligned or staggered; The second water flow channel is provided with a second fixed seat water inlet hole and a second fixed seat water outlet hole on the second fixed seat, and a second rotating seat water inlet hole and a second rotating seat water outlet hole are provided on the second rotating seat. When the second rotating seat rotates relative to the second fixed seat, the second fixed seat water inlet hole and the second rotating seat water inlet hole, and the second fixed seat water outlet hole and the second rotating seat water outlet hole are aligned or staggered.

2. The double-rotating leak-proof filter device according to claim 1, characterized in that: The filter element is screwed into and installed on the waterway plate, and opens or closes the communication between the first water flow channel and the second water flow channel by rotating in the same direction twice in succession.

3. The double-rotating anti-leakage filtering device according to claim 1, characterized in that: The first rotating seat extends upward to be provided with a water inlet connecting column and a water outlet connecting column which are connected with the first rotating seat water inlet hole and the first rotating seat water outlet hole. The second rotating seat extends downward to be provided with a water inlet connecting hole and a water outlet connecting hole which are connected with the second rotating seat water inlet hole and the second rotating seat water outlet hole. The water inlet connecting column is plug-connected with the water inlet connecting hole, and the water outlet connecting column is plug-connected with the water outlet connecting hole.

4. The double-rotating anti-leakage filtering device according to claim 1, characterized in that: The first fixing seat is connected to the filter element installation port with a hollow cover plate for shielding the first rotating seat, the inner side wall of the cover plate is circumferentially provided with a first screw-in angular groove and a second screw-in angular groove, the first screw-in angular groove is provided with a first positioning opening and a first positioning wall, and the second screw-in angular groove is provided with a second positioning opening and a second positioning wall; A connecting portion is provided at the lower end of the cylinder, and a first screw-in protrusion and a second screw-in protrusion are circumferentially spaced apart on the connecting portion. A first positioning block and a second positioning block are respectively provided on the first screw-in protrusion and the second screw-in protrusion. The first positioning block is installed from the first positioning port so that the first screw-in protrusion is screwed into the first screw-in inclined groove, and the second positioning block is installed from the second positioning port so that the second screw-in protrusion is screwed into the second screw-in inclined groove.

5. The double-rotating anti-leakage filtering device according to claim 4, characterized in that: The distance between the first positioning opening and the first positioning wall is different from the distance between the second positioning opening and the second positioning wall.

6. The double-rotating anti-leakage filtering device according to claim 4, characterized in that: The waterway plate further comprises a hollow pressing plate arranged between the first rotating seat and the cover plate, the pressing plate covers the first rotating seat, and the cover plate presses the pressing plate; The filter element also includes a bracket arranged in the cylinder, a filter screen or filter membrane arranged on the bracket, a connection nozzle arranged in the cylinder to connect the bracket and the second fixed seat, and a hollow retaining ring arranged on the lower end surface of the cylinder to shield the second rotating seat; A plurality of first sealing rings are provided at the connection of the first water flow channel between the first fixed seat and the first rotating seat; A plurality of second sealing rings are provided at the connection of the second water flow channel between the second fixed seat and the second rotating seat.

7. A water purifier, comprising a housing, characterized in that: The housing is provided with a double-rotating anti-leakage filtering device as described in any one of claims 1 to 6.

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