An anti-blocking and automatic water shut-off integrated water purifier

Abstract

The present invention discloses an anti-clogging, automatic water shut-off integrated water purifier, comprising a base, a filter cartridge mounted on the base, and a filter element assembly located within the filter cartridge. The base comprises a raw water flow channel, a pure water flow channel, and a wastewater flow channel. The base is provided with a control valve that controls the on / off of the raw water flow channel according to the water pressure of the pure water flow channel. The base is also provided with a pressure relief channel connecting the water inlet of the filter element with the wastewater outlet end face of the reverse osmosis filter element. The pressure relief channel is provided with a pressure relief valve. This water purifier has the advantages of preventing the water pressure within the filter cartridge from continuing to rise and achieving automatic water shut-off if impurities in the raw water clog the primary filter element.

Description

Technical Field

[0001] The present invention belongs to the technical field of household water purifiers, and in particular relates to an anti-blocking and automatic water shut-off integrated water purifier. Background Art

[0002] Currently, the mainstream water purifiers on the market are split-type, with individual filters connected in series via pipelines. These systems are complex, bulky, and inconvenient to maintain and replace. Later, integrated water purifiers emerged, integrating the filter into a single cartridge. These compact, space-saving, and convenient filter replacement systems are gaining popularity among consumers. However, these previous integrated water purifiers failed to automatically shut off the pure water supply once it was full, and the system continued to produce water. This resulted in a large amount of water being discharged as wastewater, resulting in a waste of water resources.

[0003] To this end, the applicant has invented a cylindrical integrated water purifier. This type of water purifier has a flow control base, which enables water connectivity through the flow control base, eliminating complicated and entangled pipelines and is very popular among users.

[0004] The water purifier's filter cartridge contains a filter element assembly, which includes a primary filter element and a reverse osmosis filter element. The primary filter element is composed of PP cotton and carbon rods. The PP cotton removes sediment, oxidants, and suspended solids from the water, while the carbon rods remove chlorine and odors. The reverse osmosis filter element further removes bacteria, viruses, and heavy metals, ultimately producing pure water. However, due to impurities in the raw water, after a period of use, these impurities can clog the primary filter element. This prevents raw water from flowing in and out of the filter element, and the booster pump outside the water purifier causes the water pressure inside the filter cartridge to continuously increase, potentially damaging the water purifier and the booster pump. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an anti-blocking and automatic water-cut-off integrated water purifier that can avoid the continuous increase of water pressure in the filter cartridge and can also achieve automatic water shut-off when impurities in the raw water clog the primary filter element, so as to overcome the shortcomings of the existing technology.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A blockage-proof automatic water shut-off integrated water purifier comprises a base, a filter cartridge mounted on the base, and a filter element assembly located in the filter cartridge; the base is provided with a raw water flow channel, a pure water flow channel, and a waste water flow channel; the side of the base is provided with a raw water inlet connected to the raw water flow channel, a pure water outlet connected to the pure water flow channel, and a waste water outlet connected to the waste water flow channel; the filter element assembly is composed of a primary filter element and a reverse osmosis filter element located in the primary filter element, and the space between the primary filter element and the filter cartridge is The gap forms a water inlet of the filter element, and the water inlet of the filter element is connected to the raw water flow channel; the pure water production pipe of the reverse osmosis filter element is connected to the pure water flow channel, and the wastewater outlet end face of the reverse osmosis filter element is connected to the wastewater flow channel; a control valve for controlling the on-off of the raw water flow channel according to the water pressure of the pure water flow channel is provided in the base, and it is characterized in that: a pressure relief flow channel connecting the water inlet of the filter element and the wastewater outlet end face of the reverse osmosis filter element is also provided in the base, and a pressure relief valve is provided in the pressure relief flow channel.

[0008] The above technical solution is adopted, by adding a pressure relief channel in the base that connects the water inlet of the filter element and the wastewater outlet end face of the reverse osmosis filter element, and a pressure relief valve is provided in the pressure relief channel. In this way, when the primary filter element of the water purifier is not blocked, the raw water can flow into the primary filter element and reversely produce water normally, and the water pressure in the water inlet of the filter element will remain normal. At this time, since the pressure relief valve is in a closed state, the pressure relief channel is blocked, and the water purifier is in a normal state of producing pure water. If impurities in the raw water block the primary filter element, the raw water cannot pass through the primary filter element, and the booster pump continues to supply water to the raw water channel, which will inevitably cause the water pressure in the cylinder to continue to increase, that is, the water pressure in the water inlet of the filter element increases. When it increases to exceed the set value of the pressure relief valve, the pressure relief valve will be opened, and the pressure relief channel will be opened. The channel is connected, and the water inlet of the filter element directly flows into the wastewater outlet end face of the reverse osmosis filter element through the pressure relief channel, and directly flows into the reverse osmosis filter element from the wastewater outlet end face, which will cause the pure water production pipe of the reverse osmosis filter element to produce pure water, and then flow into the pure water flow channel. On the one hand, this makes the raw water at the water inlet of the filter element leak out, and the water pressure decreases and no longer increases. On the other hand, as the amount of pure water produced increases, the water pressure in the pure water flow channel will also increase. When the water pressure in the pure water flow channel rises to a certain value, the control valve will be driven to cut off the raw water flow channel to stop water production, thereby preventing the water pressure in the filter cartridge from continuing to rise.

[0009] Therefore, the water purifier of the present invention has the advantages of being able to avoid a continuous increase in water pressure in the filter cartridge and also being able to automatically cut off water supply when impurities in the raw water clog the primary filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention is described in detail below with reference to the accompanying drawings:

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0012] Figure 2 A front view schematic diagram of the present invention

[0013] Figure 3 It is a schematic diagram of the back side of the present invention;

[0014] Figure 4 for Figure 2 The left diagram in ;

[0015] Figure 5 It is a bottom schematic diagram of the present invention;

[0016] Figure 6 for Figure 2 Middle AA section view;

[0017] Figure 7 for Figure 6 A in the middle is an enlarged schematic diagram;

[0018] Figure 8 for Figure 2 Middle BB section view;

[0019] Figure 9 for Figure 8 The enlarged schematic diagram of point B in the middle;

[0020] Figure 10 for Figure 2 Middle CC section view;

[0021] Figure 11 for Figure 10 Enlarged schematic diagram at point C in the middle;

[0022] Figure 12 for Figure 4 Middle DD section view;

[0023] Figure 13 for Figure 12 The enlarged schematic diagram of point D in FIG.

[0024] Figure 14 for Figure 5 Middle EE section view;

[0025] Figure 15 for Figure 14 The enlarged schematic diagram at E in the middle;

[0026] Figure 16 It is a schematic diagram of the connection between the water purifier of the present invention and the double-outlet faucet. DETAILED DESCRIPTION

[0027] like Figure 1-5 and Figure 6As shown, the anti-blocking automatic water shut-off integrated water purifier of the present invention includes a base 10, a filter cartridge 20 and a filter element assembly 30. The filter cartridge 20 is a cylindrical structure with a closed top and an open bottom, which is mounted on the base 10, and the filter element assembly 30 is mounted inside the filter cartridge 20.

[0028] The base 10 is made of plastic and has a flow control function, and includes a base body 100, a water channel cover plate 200, and a control valve 300. The base body 100 is composed of a cavity portion 110 located at the upper portion and a flow channel portion 120 located at the lower portion.

[0029] Figure 6 Combine Figure 8 、 Figure 10 As shown, the interior of the flow channel portion 120 also includes a laterally extending raw water inlet channel 131, a pure water outlet channel 132, a wastewater outlet channel 133, and a purified water outlet channel 134. In this embodiment, the raw water inlet channel 131, the pure water outlet channel 132, and the wastewater outlet channel 133 are parallel to each other, and the purified water outlet channel 134 and the wastewater outlet channel 133 are collinear. The pure water outlet channel 132 is located in the middle of the base, the raw water inlet channel 131 is located on one side of the pure water outlet channel 132, and the wastewater outlet channel 133 and the purified water outlet channel 134 are located on the other side of the pure water outlet channel 132.

[0030] One end of the raw water inlet channel 131 communicates with the outside world to form the raw water inlet 121, and the other end terminates inside the channel portion 120. The pure water outlet channel 132 runs horizontally through the entire base, and both ends communicate with the outside world to form the pure water outlet 122. One end of the wastewater outlet channel 133 communicates with the outside world to form the wastewater outlet 123, and the other end terminates inside the channel portion 120. One end of the clean water outlet channel 134 communicates with the outside world to form the clean water outlet 124, and the other end terminates inside the channel portion 120. The clean water outlet 124 is located on the base 100 opposite the wastewater outlet 123.

[0031] The raw water inlet 121, the waste water outlet 123 and one of the pure water outlets 122 are located on the same side of the base 100 (i.e. Figure 2 The clean water outlet 124 and another pure water outlet 122 are located on the other side of the seat body 100 (ie Figure 3 The clean water outlet 124 is opposite to the waste water outlet 123 (as shown in FIG. Figure 8 The raw water inlet 121, the pure water outlet 122, the waste water outlet 123, and the clean water outlet 124 are used to connect to external water pipes.

[0032] like Figure 6 and Figure 7As shown, a first check valve cavity 111 is provided at the center of the bottom of the cavity portion 110 and above the pure water outlet flow channel 132, and the first check valve cavity 111 is connected to the pure water outlet flow channel 132. A second check valve cavity 112 and a lower half cavity 301 are provided at the bottom of the cavity portion 110, on both sides of the first check valve cavity 111 and above the pure water outlet flow channel 132. The second check valve cavity 112 and the lower half cavity 301 are also connected to the pure water outlet flow channel 132, respectively. In addition, as shown Figure 8 and Figure 9 As shown, at the bottom of the cavity 110, above the clean water outlet flow channel 134, there are also a third check valve cavity 114 and a first plug cavity 115, wherein the third check valve cavity 114 is located above the end of the clean water outlet flow channel 134, and the third check valve cavity 114 and the first plug cavity 115 are both connected to the clean water outlet flow channel 134. At the bottom of the cavity 110, above the end of the waste water outlet flow channel 133, there is also a second plug cavity 116, which is connected to the waste water outlet flow channel 133. Figure 10 and Figure 11 As shown, the bottom of the cavity portion 110 is located above the end of the raw water inlet channel 131 and has a raw water plug-in cavity 117 .

[0033] For example Figure 6 and Figure 7 As shown, the waterway cover plate 200 is fixed to the cavity portion 110 by screws, and includes a plate body 210 and a water collecting chamber 220 located on the plate body 210. A pure water through chamber 221 and a waste water chamber 222 of the pure water through chamber 221 are provided at the center position of the bottom of the water collecting chamber 220. The lower end of the pure water through chamber 221 has a pure water outlet center pipe 201 extending downward. The pure water outlet center pipe 201 is inserted into the first check valve cavity 111, and a sealing ring is provided between the two. A first check valve 401 is provided in the pure water outlet center pipe 201, and the first check valve 401 allows water to flow only from the pure water through chamber 221 to the pure water outlet flow channel 132, while water cannot flow from the pure water outlet flow channel 132 to the pure water through chamber 221.

[0034] The pure water outlet 122 , the pure water outlet flow channel 132 , the first check valve chamber 111 , and the pure water outlet central pipe 201 , which are connected in sequence, form a pure water flow channel.

[0035] For example Figure 6 、 Figure 8 as well as Figure 9As shown, the bottom of the waterway cover plate 200 has a downwardly protruding pure water inlet pipe 202 and a pure water outlet pipe 203. A pure water internal channel 204 is also provided within the water flow cover plate 200, connecting the pure water inlet pipe 202 and the pure water outlet pipe 203. The pure water inlet pipe 202 is inserted into the second check valve cavity 112, with a sealing ring between the two. A second check valve 402 is installed within the pure water inlet pipe 202. This second check valve 402 prevents water from flowing from the pure water outlet channel 132 to the pure water internal channel 204 within the waterway cover plate 200, preventing water from flowing from the pure water internal channel 204 to the pure water outlet channel 132. The pure water outlet pipe 203 is inserted into the first insertion cavity 115, with a sealing ring between the two. The second check valve chamber 112 , the pure water inlet pipe 202 , the pure water internal channel 204 , the pure water outlet pipe 203 , and the first plug-in chamber 115 , which are connected in sequence, form a pure water branch channel.

[0036] like Figure 9 As shown, the bottom of the wastewater chamber 222 has two wastewater outlets. A first wastewater outlet pipe 206 extends below the first wastewater outlet 205 and is inserted into the third check valve chamber 114, with a sealing ring between the two. A third check valve 403 is installed within the first wastewater outlet pipe 203. This third check valve 403 prevents water from flowing from the wastewater chamber 222 to the clean water outlet channel 134, preventing water from flowing from the clean water outlet channel 134 to the wastewater chamber 222. The first wastewater outlet 205, first wastewater outlet pipe 206, and third check valve chamber 114, which are connected in sequence, form a wastewater bypass channel.

[0037] A second wastewater outlet pipe 208 extends below the second wastewater outlet 207. This second wastewater outlet pipe 218 is inserted into the second insertion cavity 116, with a sealing ring between the two. The second wastewater outlet 207, second wastewater outlet pipe 218, second insertion cavity 116, wastewater outlet channel 133, and wastewater outlet 123 are connected in sequence to form a wastewater channel.

[0038] The connected purified water outlet channel 134 and the purified water outlet 124 form a purified water channel.

[0039] like Figure 10 and Figure 11 As shown, the bottom of the water channel cover plate 200 also has a downwardly protruding raw water inlet pipe 209, and the raw water inlet pipe 209 is plugged into the raw water inlet plug-in cavity 117, with a sealing ring sealed between the two.

[0040] For example Figure 7As shown, the bottom of the waterway cover plate 200 also has a downwardly protruding upper chamber 302. This upper chamber 302 aligns with the lower chamber 301 at the bottom of the cavity portion 110 to form a control valve chamber, within which a control valve 300 is disposed. The control valve 300 is placed within the control valve chamber, with its active valve diaphragm 311 located within the lower chamber 301 and its passive valve diaphragm 312 located within the upper chamber 302. The control valve 300 is sealed against the inner walls of the lower chamber 301 and the upper chamber 302, respectively, by annular ridges surrounding the active valve diaphragm 311 and the passive valve diaphragm 312.

[0041] The top of the upper chamber 302 has a downwardly protruding boss 501, and the center of the boss 501 has a water inlet hole 502, which is connected to the raw water inlet pipe 209 through the raw water internal channel 503 inside the water channel cover 200. Figure 5 As shown, the top of the upper chamber 302 is located outside the boss 501 and has a water outlet 504, which is connected to the upper surface of the cover body 210 of the water channel cover 200, which is located outside the water collecting chamber 220. The water inlet 502, the gap between the passive valve membrane 312 and the end face of the boss 501, and the water outlet 504 are connected in sequence to form a water control flow channel section. There is a piston 313 between the active valve membrane 311 and the passive valve membrane 312, and the piston 313 is located directly below the boss 501. When the piston 313 moves upward, it will press the passive valve membrane 312 to move upward to block the water inlet 502, block the control flow channel section, and prevent the raw water from entering the upper chamber 302 and flowing into the cylinder through the water outlet 504, thereby achieving the purpose of water cut-off. On the contrary, when the piston 313 does not press the actuated valve membrane 312, the water inlet hole 502 and the water outlet hole 504 are connected to the upper cavity 302 through the gap between the actuated valve membrane and the end face of the boss, the water control flow section is unobstructed, and the raw water can enter the cylinder through the water inlet hole 502 and the water control flow section.

[0042] The raw water inlet 121, the raw water inlet flow channel 131, the raw water inlet plug-in cavity 117, the raw water inlet pipe 209, the raw water internal channel 503, and the water control flow channel section, which are connected in sequence, constitute a raw water flow channel.

[0043] For example Figure 6 As shown, the filter element assembly 30 includes a primary filter device 31 and a reverse osmosis filter element 32. The water-isolating bead 905 of the primary filter device 31 is inserted into the water collection chamber 220, and a sealing ring is provided between the two.

[0044] The primary filter device 31 consists of a primary filter element 901, an upper end plate 902, and a lower end plate 903. The primary filter element 902 is cylindrical in shape, with a central cavity 904. The upper end plate 902 blocks the upper end surface of the primary filter element 902 and the upper port of the central cavity 904. The lower end plate 903 blocks the lower end surface of the primary filter element 902 and has a downwardly projecting water-blocking collar 905 that connects to the central cavity 902.

[0045] Combine Figure 7 As shown, the reverse osmosis filter element 32 is located in the central cavity 904 of the primary filtration device 31, and a sealing ring is wrapped around the circumference of its water production end 906 to seal it with the water-isolating convex ring 905 of the primary filtration device 31. Its pure water production pipe 907 is inserted into the pure water cavity 221, and a sealing ring is sealed between the two, so that the wastewater outlet end face 908 of the reverse osmosis filter element 32 is located in the wastewater cavity 222.

[0046] like Figure 6 and Figure 12 As shown, there is a gap between the circumference of the primary filter element 901 and the cylinder wall 21 of the filter cartridge 20 to form the filter element water inlet portion 41 .

[0047] Both primary filter element 901 and reverse osmosis filter element 32 are conventional technologies. Primary filter element 901 is composed of PP cotton and carbon rods. The PP cotton removes sediment, oxidants, and suspended solids from the water, while the carbon rods remove chlorine and odors. Reverse osmosis filter element 32 further removes bacteria, viruses, and heavy metals from the water, ultimately producing pure water.

[0048] For example Figure 9 As shown, in order to adjust the wastewater ratio, a wastewater regulating valve 900 (combined with Figure 5 ). Specifically, the bottom of the flow channel portion 120 is located below the second plug-in cavity 116 and has a regulating valve cavity 910. The regulating valve cavity 910 is a stepped hole with a thin upper section and a thick lower end. Its upper section is connected to the wastewater outlet flow channel 133. A regulating valve core 911 is provided in the regulating valve cavity 910. The lower section of the regulating valve core 911 has an annular flange 912. The lower mouth of the regulating valve cavity 910 is fixed with an annular cover plate 913 that surrounds the lower end of the regulating valve core 911 and covers the annular flange 912. It is used to prevent the regulating valve core 911 from falling off from the regulating valve cavity 910. There is a sealing ring between the regulating valve cavity 910 and the regulating valve core 911. The upper section of the regulating valve core 911 has a countersunk flow channel 914 with a closed bottom and an upper part connected to the upper end surface. The side of the countersunk flow channel 914 has a valve port 915 corresponding to the position of the wastewater outlet flow channel 133. The lower end surface of the regulating valve core 911 has a wrench counterbore 916. By using a wrench that can be inserted into the wrench counterbore 916, the regulating valve core 911 is rotated within the regulating valve chamber 910, so that the valve port 915 is aligned with or offset from the wastewater outlet flow channel 133 to adjust the unit wastewater discharge volume, thereby adjusting the wastewater ratio: when the valve port 915 is aligned with the wastewater outlet flow channel 133, the unit wastewater discharge volume is maximized, and the greater the offset, the smaller the unit wastewater discharge volume.

[0049] like Figure 13As shown, the base 10 also includes a pressure relief channel 42 connecting the filter element water inlet 41 with the wastewater outlet end of the reverse osmosis filter element 32. A pressure relief valve 50 is installed within the pressure relief channel 42. Specifically, a water gap 1001 is defined between the waterway cover plate 200 and the inner wall of the cavity 110, connecting to the filter element water inlet 41. A lower pressure relief valve chamber 51 is also defined at the bottom of the cavity 110, next to the first check valve chamber 111. The lower surface of the plate body 210 of the waterway cover plate 200 includes an upper pressure relief valve chamber 52, which is inserted into the lower pressure relief valve chamber 51. The lower pressure relief valve chamber 51 includes a valve seat 53, which has a valve seat through-hole 5301 defined therein. This valve seat through-hole 5301 is connected to the water gap 1001. The upper pressure relief valve chamber 52 is connected to the wastewater chamber 222 of the waterway cover plate 200.

[0050] The upper pressure relief valve chamber 52 is inserted into the lower pressure relief valve chamber 51 and sleeved onto the valve seat 53. A valve seal ring 54 is provided between the valve seat end surface of the valve seat 53 and the upper pressure relief valve chamber 52. A valve plug 54, a first spring 55, and a pressure plate 56 are provided within the upper pressure relief valve chamber 52. A first adjustment hole is provided at the top of the upper pressure relief valve chamber 52, and a first adjustment bolt 57 is installed within the first adjustment hole.

[0051] The valve plug 54 comprises an upper thick section and a lower thin section. The upper thick section is located in the upper pressure relief valve chamber 52, while the lower thin section is inserted into the valve seat through-hole 5301. A stepped sealing surface 5403 is formed at the junction of the upper thick section and the lower thin section. The sealing surface 5403 engages and disengages with the valve seal 54 to cut off and open the water flow. A pressure plate 56 is positioned above the first spring 55 within the upper pressure relief valve chamber 52. The lower end of the first spring 55 abuts against the upper thick section of the valve plug 54, while the upper end of the first spring 55 abuts against the pressure plate 56. The pressure plate 56 is abutted by the lower end of the first adjusting bolt 57. Adjusting the length of the first adjusting bolt 57 extending into the upper pressure relief valve chamber 52 adjusts the preload of the first spring 55, thereby adjusting the pressure relief threshold of the pressure relief valve 50. The pressure plate 56 is positioned within the upper pressure relief valve chamber 52. Its shape and dimensions are designed to ensure that it does not affect the connection between the upper pressure relief valve chamber 52 and the wastewater chamber 222.

[0052] In the present invention, the water gap 1001, the valve seat channel 5301, the upper pressure relief valve chamber 52, and the wastewater chamber 222 constitute the pressure relief passage 42 of the present invention. When the primary filter element 901 is not yet clogged by impurities, raw water entering the filter cartridge 20 will smoothly pass through the primary filter element 901 through the filter element water inlet 41, and then enter the reverse osmosis filter element 32 for normal filtration and water production. At this time, the water pressure in the pressure relief passage 42 will be lower than the pressure relief threshold. Due to the preload force of the spring 55, the valve plug 54 will always block the pressure relief passage 42, cutting off the flow of raw water from the pressure relief passage 42 to the wastewater chamber 222. However, if impurities in the raw water clog the primary filter element 901, causing it to lose its filtration function, the water pressure in the pressure relief passage 42 connected to the filter element's water inlet 41 will increase as the raw water enters the filter cartridge 20. When the pressure exceeds the pressure relief threshold of the pressure relief valve 50, the water pressure will push the valve plug 54 upward, opening the pressure relief passage 42. The raw water will then flow directly through the pressure relief passage 42 into the wastewater chamber 222. A portion of the raw water will then flow into the reverse osmosis filter element 32 from the wastewater end surface located in the wastewater chamber 222, while the remaining portion will be directly discharged from the wastewater passage. This will prevent the water pressure in the filter cartridge 20 from accumulating and increasing. The raw water flowing into the reverse osmosis filter element 32, after being filtered by the reverse osmosis filter element 32, flows through the pure water production pipe 907 into the pure water passage. When the water storage tank is full, the water pressure in the pure water passage will rise until the control valve 300 shuts off the raw water passage, stopping the inflow of raw water. Therefore, the present invention has the advantages of being able to avoid a continuous increase in water pressure in the filter cartridge and also being able to automatically cut off water supply when impurities in the raw water clog the primary filter element.

[0053] The pressure relief valve 50 may be a commercially available pressure relief valve or a pressure relief valve of other structural forms, as long as it has the function of closing when the pressure is below the threshold and automatically opening when the pressure is above the threshold.

[0054] For example Figure 6 and Figure 7 As shown, in order to be able to adjust the water cut-off sensitivity of the control valve 300, the present invention also adds a control valve adjustment structure 60 (combined with Figure 5The control valve adjustment structure 60 is disposed in the base, below the control valve 300. Specifically, a second adjustment hole 61 is formed in the base 10, below the control valve 300. This second adjustment hole 61 connects from the lower surface of the flow channel portion 120 to the lower chamber 301. A nut 62 is embedded in the lower section of the second adjustment hole 61, and a second adjustment bolt 63 is disposed within the second adjustment hole 61. The second adjustment bolt 63 comprises a smooth upper section and a threaded lower section. Two sealing rings are disposed between the smooth section and the upper section of the second adjustment hole 61. The threaded section engages with the nut 62. The top end of the second adjustment bolt 63 extends into the lower chamber 301 and is supported by a top plate 64, which is located below the active valve diaphragm 311. The shape and size of the top plate 64, the second adjustment bolt 63, and the second adjustment hole 61 within the pure water flow path are designed to avoid blockage of the pure water flow path, allowing pure water to flow through the lower chamber 301.

[0055] By rotating the second adjusting bolt 63, the top plate 64 can be driven to drive the active valve diaphragm 311 and then drive the piston 313 to adjust the initial gap between the passive valve diaphragm 312 and the boss 501, thereby achieving the function of adjusting the sensitivity of the control valve. When the initial gap is relatively small, the stroke of the passive valve diaphragm 312 to reach the boss 501 will become smaller, and the water control flow section can be cut off more sensitively and quickly. Therefore, the adjustment of the control valve adjustment structure 60 can meet the different needs of users for water control sensitivity in different situations.

[0056] like Figure 9 As shown, in the wastewater flow channel 133, a fourth check valve 70 is provided above the wastewater regulating valve, specifically in the second wastewater outlet pipe 208. The setting of the fourth check valve 70 helps to prevent harmful substances such as wastewater and exhaust gas from returning to the polluted water purifier.

[0057] In order to be able to expel the air in the water purifier, such as Figure 14 and Figure 15 As shown, an air release structure 80 (combined with Figure 5). The air release structure 80 includes an exhaust hole 81 located on the base 100, connecting the cavity portion 110 and the outside world, a plug 82 located in the exhaust hole 81, a sealing gasket 83, and a second spring 84. The plug 82 includes a button column 8201 and a plugging head 8202 that is integral with the button column 8201 and is thicker than the exhaust hole 81. The plugging head 8202 and the button column 8201 are connected to form a blocking end face 8203 around the end face of the button column 8201. The plugging head 8202 is located in the cavity portion 110, and the button column 8201 is located in the exhaust hole 81, with its end exposed outside the base 10. The sealing gasket 83 is made of an elastic material, such as rubber, and is fixed on the blocking end face 8203 around the button column 8201. The end surface of the plugging head 8202 facing the inside of the cylinder has a spring mounting cavity 8204, and the lower surface of the waterway cover plate 200 has a spring top column 85 extending toward the plugging head 8202. The lower end of the second spring 84 is fixed in the spring mounting cavity 8204, and the upper end is mounted on the spring top column 85. Through the elastic action of the second spring 84, the plugging head 8202 is pressed to block the exhaust hole 81. If you need to release the air in the cylinder, just press the button column 83, and the exhaust hole 81 will open. When opening the exhaust hole, the water purifier needs to be turned upside down, that is, when releasing the air, the base 10 is located on top so that water will not leak out. Of course, the air release structure 80 can also be a manual exhaust valve directly installed at the bottom of the base body 100, as long as it has a manual opening function to achieve air discharge. When using the water purifier for the first time, you need to first turn the water purifier upside down with the base 10 facing upward. Press the button column 83 to open the vent 81. Then, inject raw water into the water purifier through the raw water flow channel until water overflows from the drain hole 81. At this point, you can confirm that the air in the cylinder has been exhausted. Release the button column 83 to re-seal the vent 81. Finally, turn the water purifier over and straighten it (with the base 10 facing downward) to allow the water purifier to operate normally.

[0058] The above is the anti-blocking and automatic water shut-off integrated water purifier of the present invention, and its working method is as follows:

[0059] Connect the raw water inlet 121 to the tap water pipe, Figure 16 , connect the two pure water outlets 122 of the pure water outlet channel 132 to the water storage barrel and the pure water pipe 21 of the double water outlet faucet 20 respectively, connect the waste water outlet 123 to the waste water pipe, and connect the clean water outlet 124 to the clean water pipe 22 of the double water outlet faucet 20.

[0060] When both the pure water valve 23 and the purified water valve 24 of the dual-outlet faucet 20 are closed, raw water (i.e., tap water or other unfiltered water) enters from the raw water inlet 121, passes through the raw water inlet channel 131, the raw water plug-in cavity 117, the raw water inlet pipe 209, the raw water internal channel 503, the water inlet hole 502, the upper cavity, and the water outlet hole 504, and flows into the filter cartridge. It enters the primary filter cartridge from the side through the gap between the cartridge wall 21 and the primary filter cartridge 901, enters the central cavity after primary filtration, and then enters the reverse osmosis filter cartridge 32 from the upper end face, i.e., the water inlet end face, of which a portion becomes pure water after filtration and enters the purified water cartridge. The aquatic water pipe 907 enters the water storage tank through the pure water cavity 221, the first check valve cavity 111, the pure water outlet channel 132, and the pure water outlet 122, and the waste water is discharged into the wastewater cavity 222. Part of the waste water flows into the clean water outlet channel 134 through the first wastewater outlet 205, the first wastewater outlet pipe 206, the third check valve 403, and the third check valve cavity 114, and the other part of the waste water is discharged into the sewer through the second wastewater outlet 207, the second wastewater outlet pipe 208, the second plug-in cavity 116, the wastewater outlet channel 133, and the wastewater outlet 123. Since the pure water valve and the clean water valve of the double-outlet faucet are both closed, when the pure water in the water storage tank is full, the water pressure in the pure water outlet channel 132 will rise, causing the active valve membrane 311 of the control valve 300 to be pressurized to drive the piston 313 to move upward, and then the piston 313 presses the passive valve membrane 313, so that the passive valve membrane 312 is pressed on the end face of the boss 501 to block the water inlet hole 502, isolating the water inlet hole 502 from the water outlet hole 504, preventing the inflow of raw water, and achieving the purpose of automatic water shut-off.

[0061] Of course, if the reverse osmosis filter element adopts a large flow reverse osmosis filter element, such as a 1000-gallon large flow reverse osmosis filter element, the water storage tank can be omitted, and it is only necessary to block the water outlet 122 connected to the water storage tank.

[0062] When the user chooses to use pure water, they open the pure water valve 23 in the dual-outlet faucet 20 (while the clean water valve 24 is closed). As the pure water flows out, the water pressure in the pure water outlet channel 132 decreases, reducing the pressure on the active valve diaphragm 311. The piston 313 moves downward, releasing the passive valve diaphragm 312, and opening the water inlet hole 502, allowing the water inlet hole 502 to resume communication with the water outlet hole 504 through the upper chamber. The raw water can then be filtered smoothly in the filter cartridge, continuously producing pure water. When the pure water valve in the dual-outlet faucet is closed again, as described above, the water pressure in the pure water outlet channel 132 increases, and the control valve 300 cuts off the raw water from entering, stopping water production.

[0063] When the user chooses to use purified water, the clean water valve 24 of the dual-outlet faucet 20 is opened (while the pure water valve 23 is closed). Since the clean water outlet flow path 134 is connected to the pure water outlet flow path 132, opening the clean water valve 24 of the dual-outlet faucet 20 will reduce the pressure in the pure water outlet flow path 132. The control valve 300 will also open the water inlet hole 502 as described above, resuming pure water production. At this time, a portion of the generated wastewater flows into the clean water outlet flow path 134 through the first wastewater outlet 205, the first wastewater outlet pipe 206, the third check valve 403, and the third check valve chamber 114. It mixes with the pure water flowing into the clean water outlet flow path 134 and then flows out of the dual-outlet faucet, thus forming a large flow of purified water to meet people's non-food needs. Of course, after the clean water valve 24 of the dual-outlet faucet 20 is closed again, as described above, the water pressure in the pure water outlet flow path 132 will rise, and the control valve 300 will cut off the entry of raw water, stopping water production.

[0064] It can be seen from the above detailed description that the present invention has the following advantages:

[0065] 1. When the primary filter element is blocked by impurities in the raw water, it can prevent the water pressure in the filter cartridge from continuing to rise and can also achieve automatic water shut-off;

[0066] 2. The water cut-off sensitivity of the control valve can be adjusted;

[0067] 3. It can prevent wastewater, exhaust gas and other harmful substances from returning to the polluted water purifier;

[0068] 4. It can release the air remaining in the water purifier.

[0069] However, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. An integrated water purifier with anti-blocking and automatic water shut-off function, comprising a base, a filter cartridge mounted on the base, and a filter element assembly located in the filter cartridge; the base is provided with a raw water flow channel, a pure water flow channel and a waste water flow channel, the side surface of the base is provided with a raw water inlet connected to the raw water flow channel, a pure water outlet connected to the pure water flow channel, and a waste water outlet connected to the waste water flow channel, respectively; the filter element assembly is composed of a primary filter element and a reverse osmosis filter element located in the primary filter element, the gap between the primary filter element and the filter cartridge forming a filter element water inlet, the filter element water inlet being connected to the raw water flow channel; the pure water production pipe of the reverse osmosis filter element is connected to the pure water flow channel, and the waste water outlet end face of the reverse osmosis filter element is connected to the waste water flow channel; a control valve is provided in the base to control the on-off of the raw water flow channel according to the water pressure of the pure water flow channel, characterized in that: The base is also provided with a pressure relief channel connecting the water inlet of the filter element and the wastewater outlet end face of the reverse osmosis filter element, and a pressure relief valve is provided in the pressure relief channel; when impurities in the raw water clog the primary filter element so that the primary filter element loses its water filtering function, as the raw water enters the filter cartridge, the water pressure in the pressure relief channel connected to the water inlet of the filter element will increase. When the pressure relief threshold of the pressure relief valve is exceeded, the water pressure pushes open the valve plug of the pressure relief valve, so that the pressure relief channel is conductive, and a part of the raw water flows into the reverse osmosis filter element from the wastewater end face located at the reverse osmosis filter element, and the other part of the raw water is directly discharged from the wastewater channel. The raw water flowing into the reverse osmosis filter element is filtered and flows into the pure water channel from the pure water production pipe. When the water pressure in the pure water channel rises until the control valve is prompted to cut off the raw water channel to stop the raw water inlet.

2. The anti-blocking and automatic water shut-off integrated water purifier according to claim 1 is characterized by: The pressure relief valve comprises a valve plug which blocks the pressure relief passage when the pressure is lower than a threshold value and opens the pressure relief passage when the pressure is higher than the threshold value.

3. The anti-blocking and automatic water shut-off integrated water purifier according to claim 1 is characterized by: The pressure relief valve includes a lower pressure relief valve chamber and an upper pressure relief valve chamber provided in the pressure relief flow channel, a valve seat located in the lower pressure relief valve chamber, and a valve plug and a first spring provided in the upper pressure relief valve chamber; the valve seat has a valve seat through hole connected to the water inlet of the filter element, and the upper pressure relief valve chamber is connected to the wastewater outlet end face of the reverse osmosis filter element; the upper pressure relief valve chamber is inserted into the lower pressure relief valve chamber and sleeved on the valve seat, a valve sealing ring is provided on the valve seat end face of the valve seat, and the valve plug is pressed and fitted on the valve sealing ring by the first spring.

4. The anti-blocking and automatic water shut-off integrated water purifier according to claim 3 is characterized by: The valve plug has a lower thin section located in the valve seat through hole and an upper thick section located in the upper pressure relief valve cavity. The upper thick section and the thin section are combined to form a sealing surface that cooperates with the valve sealing ring.

5. The anti-blocking and automatic water shut-off integrated water purifier according to claim 3 or 4, characterized in that: The top of the upper pressure relief valve cavity is provided with a first adjustment hole, in which a first adjustment bolt is provided, and the lower end of the first adjustment bolt extends into the upper pressure relief valve cavity and presses against the first spring.

6. The anti-blocking and automatic water shut-off integrated water purifier according to claim 1, characterized in that: The base is located below the control valve and is also provided with a control valve adjustment structure. The control valve adjustment structure is a second adjustment hole opened below the control valve. The second adjustment hole is connected from the lower surface of the base to the bottom of the active valve diaphragm of the control valve. There is also a second adjustment bolt in the second adjustment hole. The top of the second adjustment bolt is located below the active valve diaphragm. By turning the adjustment bolt, the active valve diaphragm is driven and then the piston of the control valve is driven to press or release the passive valve diaphragm of the control valve, so that the passive valve diaphragm is close to or away from the water inlet hole of the control valve.

7. The anti-blocking and automatic water shut-off integrated water purifier according to claim 1, characterized in that: A check valve is also provided in the wastewater flow channel.

8. The anti-blocking and automatic water shut-off integrated water purifier according to claim 1, characterized in that: The base is also provided with an air release structure.

9. The anti-blocking and automatic water shut-off integrated water purifier according to claim 8, characterized in that: The air release structure includes an exhaust hole on the seat body that connects the inside of the filter cartridge with the outside, and an elastic plug arranged in the exhaust hole. The plug blocks the exhaust hole and opens the exhaust hole when pressed.

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