Flow control cylinder cover of double-water-outlet water purifier

Abstract

The bottom of the barrel cover is provided with a lower cavity with a downward opening, and the barrel cover is internally provided with a first raw water flow channel, a second raw water flow channel, a pure water flow channel, a waste water flow channel and a pure water flow channel. The lower cavity comprises a pure water insertion cavity positioned in the center, a wastewater cavity surrounding the exterior of the pure water insertion cavity, and a raw water cavity surrounding the exterior of the wastewater cavity; a first control valve for controlling the connection and disconnection of the first raw water flow channel according to the water pressure of the pure water flow channel and a second control valve for controlling the connection and disconnection of the second raw water flow channel according to the water pressure of the pure water flow channel are also arranged in the cylinder cover. According to the utility model, the water control flow channel is arranged on the cylinder cover, so that the cylinder cover can be conveniently connected with an external pipeline, the pressure sensor can be directly arranged on the cylinder cover, and the user experience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of household water purifiers, and particularly relates to a cylinder cover of a cylindrical integrated water purifier. Background Technique

[0002] Water is the source of life, and the quality of domestic drinking water is closely related to people's physical health. After years of publicity and popularization of drinking water and health knowledge, people have gradually understood the impact of drinking water quality on human health and paid more attention to drinking water safety, which provides a great market prospect for the application of water purifier products.

[0003] A cylindrical integrated water purifier is a water purifier that integrates all filters in a cylindrical housing. It uses a flow control base to realize the automatic on-off of the water circuit, does not require pipeline connection, and does not require electrical appliances such as water pumps or solenoid valves. Therefore, it can produce water without electricity and has a series of advantages such as convenient use, power saving, compact structure, and beautiful appearance, and is increasingly becoming a water purification product favored by people.

[0004] At first, the cylindrical integrated water purifier invented by the applicant could only produce pure water. Later, the applicant invented a dual-outlet cylindrical integrated water purifier, which can produce both pure water and clean water to meet people's diverse water use needs.

[0005] The first-generation dual-outlet cylindrical integrated water purifier invented by the applicant is disclosed in the Chinese patent document CN110156191A. For this dual-outlet cylindrical integrated water purifier, the generation of clean water requires mixing wastewater and pure water, which results in the release of pure water in the storage bucket when discharging clean water, causing waste of pure water.

[0006] The second-generation dual-outlet cylindrical integrated water purifier invented by the applicant is disclosed in the Chinese patent document CN1126243661A. This dual-outlet cylindrical integrated water purifier has a series of advantages such as independent production of pure water and clean water, large amount of clean water produced, flushing of the reverse osmosis membrane during the production of clean water, beneficial to extending the service life of the reverse osmosis membrane, and saving water resources.

[0007] However, the existing dual-outlet cylindrical integrated water purifiers all set flow channels in the base at the bottom of the filter cylinder to control the automatic on-off of the water circuit. To ensure the function, the internal structure is complex. In addition, such a structure makes it only possible to install a pressure gauge on the cylinder body of the filter cylinder to monitor the water pressure inside the cylinder, and installing the pressure gauge on the cylinder body increases the risk of water leakage of the water purifier and also makes the manufacturing process complex.

[0008] In addition, whether it is the first-generation dual-outlet cylindrical integrated water purifier or the second-generation dual-outlet cylindrical integrated water purifier, a waterway cover plate is provided inside the cavity of the base to ensure the sealing of the control valve. Although it has the advantage of preventing water leakage, in this structure, the waterway cover plate is only fixed to the base by screws in the edge area. Since there are multiple water passing channels in the middle area, a large area of the middle area cannot be fixed to the flow control base with screws. This causes the middle area of the waterway cover plate to fluctuate and deform with the water pressure inside the cylinder. Also, since a pure water check valve needs to be installed in the middle of the waterway cover plate, the pure water check valve will be deformed and squeezed by the deformation of the middle area of the waterway cover plate. Over time, the pure water check valve will fail. Once the pure water check valve fails, when the pure water flow channel is not producing pure water (i.e., when the water outlet faucet is closed and the machine stops), there will not be enough pressure to drive the control valve to cut off the raw water flow channel, resulting in the failure of the automatic water cut-off function. Utility Model Content

[0009] The technical problem to be solved by the present utility model is to provide a flow control cylinder cover for a dual-outlet water purifier, by directly arranging the flow control channels on the cylinder cover to overcome the defects existing in the prior art.

[0010] To solve the above technical problem, the present utility model adopts the following technical solutions:

[0011] The bottom of the cylinder cover has a lower cavity with an opening facing downwards, and inside it has a first raw water flow channel, a second raw water flow channel, a pure water flow channel, a wastewater flow channel, and a clean water flow channel. The lower cavity includes a pure water insertion cavity at the center, a wastewater cavity surrounding the outside of the pure water insertion cavity, and a raw water cavity surrounding the outside of the wastewater cavity. Both the first raw water flow channel and the second raw water flow channel are connected to the raw water cavity. The pure water insertion cavity is connected to the pure water flow channel, and a pure water check valve for controlling the one-way inflow of water into the pure water flow channel is provided between them. The wastewater cavity is connected to both the wastewater flow channel and the clean water flow channel, and a clean water check valve for controlling the one-way inflow of water into the clean water flow channel is arranged in the clean water flow channel. Inside the cylinder cover, a first control valve for controlling the on-off of the first raw water flow channel according to the water pressure of the pure water flow channel and a second control valve for controlling the on-off of the second raw water flow channel according to the water pressure of the clean water flow channel are also provided.

[0012] By adopting the above technical solutions, the flow control cylinder cover of the dual-outlet water purifier of the present utility model realizes the arrangement of flow control channels on the cylinder cover, which can not only facilitate the connection with external pipelines but also directly install a pressure sensor on the cylinder cover, improving the user experience. Brief Description of the Drawings

[0013] Figure 1 Schematic three-dimensional structure diagram showing the front of the water purifier applying the cylinder cover of the present utility model;

[0014] Figure 2 Schematic diagram of the three-dimensional structure of the back side of the water purifier display with the barrel cover of the present utility model applied;

[0015] Figure 3 Front view of the water purifier with the barrel cover of the present utility model applied;

[0016] Figure 4 For Figure 3 Cross-sectional view taken along line A-A in

[0017] Figure 5 For Figure 4 Enlarged schematic diagram at the barrel cover in

[0018] Figure 6 For Figure 3 Cross-sectional view taken along line B-B in

[0019] Figure 7 For Figure 3 Cross-sectional view taken along line C-C in

[0020] Figure 8 For Figure 3 Cross-sectional view taken along line D-D in

[0021] Figure 9 Top view of the water purifier with the barrel cover of the present utility model applied;

[0022] Figure 10 For Figure 9 Cross-sectional view taken along line J-J in

[0023] Figure 11 For Figure 9 Cross-sectional view taken along line K-K in

[0024] Figure 12 Schematic diagram of the cover body structure showing the lower cavity part;

[0025] Figure 13 Schematic diagram of the cover body structure showing the upper cavity part;

[0026] Figure 14 Connection schematic diagram of the water purifier with the barrel cover of the present utility model and the dual-outlet faucet. Detailed implementation manners

[0027] The flow control barrel cover of the dual-outlet water purifier of the present utility model is made of plastic as a whole. As Figures 1 to 4 shown, the barrel cover 10 is hermetically installed on the top of the barrel body 20 through an O-ring and fastened with a clamp 40. The filter element assembly 30 is installed inside the barrel body 20. For the convenience of those skilled in the art to understand the structure and working mode of the barrel cover 10, the following is described in conjunction with the overall structure of the water purifier.

[0028] In combination with Figures 5 to 8, wherein, the cylinder cover 10 has a flow control function and includes a cover body 100, a valve cover plate 200, a first control valve 300, and a second control valve 300'. The cover body 100 is composed of a lower cavity part 110 located at the bottom position, a flow channel part 130 located in the middle position, and an upper cavity part 150 located at the top position.

[0029] The inside of the flow channel part 130 is also provided with a raw water inlet flow channel 131, a pure water outlet flow channel 132, a wastewater outlet flow channel 133, and a purified water outlet flow channel 134 extending horizontally. In this embodiment, the raw water inlet flow channel 131, the pure water outlet flow channel 132, and the wastewater outlet flow channel 133 are parallel to each other, and the purified water outlet flow channel 134 and the raw water inlet flow channel 131 are on the same straight line. The pure water outlet flow channel 132 is located in the middle position of the cover body 100, the raw water inlet flow channel 131 and the purified water outlet flow channel 134 are located on one side of the pure water outlet flow channel 132, and the wastewater outlet flow channel 133 is located on the other side of the pure water outlet flow channel 132.

[0030] One end of the raw water inlet flow channel 131 communicates with the outside to form a raw water inlet 121, and the other end terminates inside the flow channel part 130. One end of the purified water outlet flow channel 134 communicates with the outside to form a purified water outlet 124, and the other end terminates inside the flow channel part 130. The position of the purified water outlet 124 on the cover body 100 is opposite to that of the raw water inlet 121. The pure water outlet flow channel 132 horizontally penetrates the entire cover body 100, and both ends communicate with the outside to form a pure water outlet 122. One end of the wastewater outlet flow channel 133 communicates with the outside to form a wastewater outlet 123, and the other end terminates inside the flow channel part 130.

[0031] The raw water inlet 121, the wastewater outlet 123, and one of the pure water outlets 122 are located on the same side of the cover body 100 (i.e., Figure 1 , Figure 3 the front side shown), the purified water outlet 124 and the other pure water outlet 122 are located on the other side of the cover body 100 (i.e., Figure 2 the back side shown), the purified water outlet 124 is opposite to the raw water inlet 121. The inner surfaces of the mouths of the raw water inlet 121, the pure water outlet 122, the wastewater outlet 123, and the purified water outlet 124 all have pipe clip claws for connecting with external water pipes.

[0032] As Figure 4 and Figure 5 as well as Figure 12As shown, the lower cavity 110 covers the opening at the top of the cylinder body 20 and is in communication with the interior of the cylinder body 20. Inside the lower cavity 110, there is a water collection cavity 1101 at the center and a raw water cavity 113 surrounding the water collection cavity 1101. The water collection cavity 1101 is divided into a pure water insertion cavity 111 at the center and a wastewater cavity 112 surrounding the pure water insertion cavity 111. The pure water insertion cavity 111 is in communication with the pure water outlet flow channel 132 through a pure water check valve cavity 114.

[0033] As Figure 7 、 Figure 11 and Figure 12 shown, the top of the wastewater cavity 112 is respectively provided with a purified water hole 1121 and a wastewater hole 1122. Among them, the wastewater hole 1122 is in communication with the wastewater outlet flow channel 133.

[0034] Again, as Figure 4 、 Figure 5 、 Figure 10 and Figure 12 shown, the bottom surface of the upper cavity 150 has a central lower insertion hole 151 in communication with the pure water outlet flow channel 132, and the central lower insertion hole 151 is located directly above the pure water check valve cavity 114. A pure water check valve 501 is provided in the pure water check valve cavity 114. The pure water check valve 501 is sealed with the pure water check valve cavity 114 by a sealing ring. The pure water check valve cavity 114, the pure water outlet flow channel 132, and the pure water outlet 122 are sequentially in communication to form a pure water flow channel.

[0035] The pure water check valve 501 only allows pure water to flow from the pure water insertion cavity 111 to the pure water outlet flow channel 132, but does not allow the pure water in the pure water flow channel 132 to flow back to the pure water insertion cavity 111.

[0036] As Figure 6 shown and Figure 13 shown, the bottom surface of the upper cavity 150 is respectively provided with a first lower half cavity 301 and a second lower half cavity 301' at positions corresponding to and above the raw water inlet flow channel 131. The first lower half cavity 301 and the second lower half cavity 301' are respectively in communication with the raw water inlet flow channel 131.

[0037] As Figure 11 shown and Figure 13 shown, the bottom surface of the upper cavity 150 has a first purified water lower insertion hole 152 in communication with the purified water hole 1121 above the purified water hole 1121. A purified water check valve 502 is provided in the first purified water lower insertion hole 152. The purified water check valve 502 is sealed with the first purified water lower insertion hole 152 by a sealing ring.

[0038] Again Figure 6 and Figure 13 shown, the bottom surface of the upper cavity 150 is provided with a second purified water lower insertion hole 153 in communication with the purified water outlet flow channel 134 above the purified water outlet flow channel 134.

[0039] As Figure 5 、 Figure 6 、 Figure 10 、 Figure 11 shown, the valve cover plate 200 is fixed to the bottom surface of the upper cavity portion 150 by screws 401. The lower surface of the valve cover plate 200 respectively has a first upper half cavity 302 above the first lower half cavity 301, a second upper half cavity 302' above the second lower half cavity 301', a central upper socket 151' above the central lower socket 151, a first purified water upper socket 152' above the first purified water lower socket 152, and a second purified water upper socket 153' above the second purified water lower socket 153.

[0040] The interior of the valve cover plate 200 also has a pure water cover plate flow channel 201 that connects the central upper socket 151 to the first upper half cavity 302, and a purified water cover plate flow channel 202 that is connected to both the first purified water upper socket 152', the second upper half cavity 302', and the second purified water upper socket 153'.

[0041] It also includes a central insertion tube 211, a first purified water insertion tube 212, and a second purified water insertion tube 213.

[0042] Among them, as Figure 5 shown, the lower end of the central insertion tube 211 is inserted through the central lower socket 151 and presses on the pure water check valve 501, and the upper end is inserted into the central upper socket 151'. Sealing rings are used to seal between the central insertion tube 211 and the central lower socket 151 and the central upper socket 151' respectively. The central insertion tube 211 also has a horizontal perforation 214 that keeps both sides of the pure water outlet flow channel 132 unblocked.

[0043] As Figure 11 shown, the lower end of the first purified water insertion tube 212 is inserted into the first purified water lower socket 152 and presses on the purified water check valve 502, and the upper end is inserted into the first purified water upper socket 152'. Sealing rings are used to seal between the first purified water insertion tube 212 and the first purified water lower socket 152 and the first purified water upper socket 152' respectively.

[0044] As Figure 6 shown, the lower end of the second purified water insertion tube 213 is inserted into the second purified water lower socket 153, and the upper end is inserted into the second purified water upper socket 153'. Sealing rings are used to seal between the second purified water insertion tube 213 and the second purified water lower socket 153 and the second purified water upper socket 153' respectively.

[0045] Continuing as Figure 6 shown in combination with Figure 10As shown, the first upper half cavity 302 and the first lower half cavity 301 are combined to form the first control valve cavity 310, and a first control valve 300 is arranged in the first control valve cavity 310. The first control valve 300 is placed in the first control valve cavity 310, with its first active valve membrane 311 located in the first upper half cavity 302 and its first passive valve membrane 312 located in the first lower half cavity 301. The first control valve 300 is sealed with the inner walls of the first upper half cavity 302 and the first lower half cavity 301 through the annular ridges around the first active valve membrane 311 and the first passive valve membrane 312 respectively.

[0046] The clean water hole 1121, the first lower clean water insertion hole 152, the first upper clean water insertion hole 152', the clean water cover plate flow channel 202, the second upper clean water insertion hole 153', the second lower clean water insertion hole 153, the clean water outlet flow channel 134 and the clean water outlet 124 are connected in sequence to form a clean water flow channel.

[0047] The clean water check valve 502 allows clean water to flow from the waste water cavity 112 to the clean water outlet flow channel 134, but does not allow the clean water in the clean water outlet flow channel 134 to flow back into the waste water cavity 112.

[0048] The bottom of the first lower half cavity 301 has a first boss 601 protruding upward, and the center of the first boss 601 has a first water inlet hole 602. The first water inlet hole 602 is connected to the raw water inlet flow channel 131, and the outside of the first boss 601 has a first water outlet hole 603, which is connected to the raw water cavity 113.

[0049] The first water inlet hole 602, the gap between the first passive valve membrane 312 and the end face of the first boss 601, and the first water outlet hole 603 are connected in sequence to form a first controlled water flow channel section.

[0050] There is a first piston 313 between the first active valve membrane 311 and the first passive valve membrane 312, and the first piston 313 is located directly above the first boss 601. When the first piston 313 moves downward under the drive of the first active valve membrane 311, it will press the first passive valve membrane 312 to move downward to block the first water inlet hole 602, blocking the first controlled water flow channel section and preventing the raw water from entering the first lower half cavity 301 and flowing into the cylinder through the first water outlet hole 603, thus achieving the purpose of cutting off the water supply. On the contrary, when the first piston 313 does not press the first passive valve membrane 312, the first water inlet hole 602 and the first water outlet hole 603 are connected through the gap between the first passive valve membrane 312 and the end face of the boss, and the first controlled water flow channel section is unobstructed. The raw water can enter the raw water cavity 113 through the controlled water flow channel section via the first water inlet hole 602.

[0051] The raw water inlet 121, the raw water inlet flow channel 131 and the first controlled water flow channel section connected in sequence constitute the first raw water flow channel.

[0052] Again Figure 6 Combined withFigure 11 As shown in the figure, the second upper half cavity 302' and the second lower half cavity 301' are mated to form the second control valve cavity 310'. A second control valve 300' is arranged in the second control valve cavity 310'. The second control valve 300' is placed in the second control valve cavity 310', with its second active valve membrane 311' located in the second upper half cavity 302' and its second passive valve membrane 312' located in the second lower half cavity 301'. The second control valve 300' is sealed with the inner walls of the second upper half cavity 302' and the second lower half cavity 301' respectively through the annular ridges around the second active valve membrane 311' and the second passive valve membrane 312'.

[0053] The bottom of the second lower half cavity 301' has a second boss 601' protruding upward. The center of the second boss 601' has a second water inlet hole 602', and the second water inlet hole 602' is communicated with the raw water inlet flow channel 131. The outside of the second boss 601' has a second water outlet hole 603', and the second water outlet hole 603' is communicated with the raw water cavity 113.

[0054] The second water inlet hole 602', the gap between the second passive valve membrane and the end face of the second boss, and the second water outlet hole 603' are communicated in sequence to form a second control water flow channel section.

[0055] There is a second piston 313' between the second active valve membrane 311' and the second passive valve membrane 312'. The second piston 313' is located directly above the second boss 601'. When the second piston 313' moves downward under the drive of the second active valve membrane 311', it will press the second passive valve membrane 312' to move downward to block the second water inlet hole 602', block the second control water flow channel section, block the raw water from entering the second lower half cavity 301' and unable to flow into the cylinder through the second water outlet hole 603', so as to achieve the purpose of cutting off water. On the contrary, when the second piston 313' does not press the second passive valve membrane 312', the second water inlet hole 602' and the second water outlet hole 603' are communicated through the gap between the second passive valve membrane 312' and the end face of the second boss, the second control water flow channel section is unobstructed, and the raw water can enter the raw water cavity 113 through the control water flow channel section via the second water inlet hole 602'.

[0056] The raw water inlet 121, the raw water inlet flow channel 131, and the second control water flow channel section that are communicated in sequence form the second raw water flow channel.

[0057] As Figure 8 Combined Figure 9 、 Figure 13 As shown in the figure, a sensor installation cavity 154 is also arranged in the upper cavity part 150. The sensor installation cavity 154 is communicated with the raw water cavity 113 through a through hole 154a. A pressure sensor 154' is sealed and installed in the sensor installation cavity 154.

[0058] In addition, it further includes a cover 155 covering the opening of the upper cavity 150, and the cover 155 has an opening 156 for exposing the display screen of the pressure sensor 154'.

[0059] As Figure 7 and Figure 13 shown, a regulating valve mounting hole 157 is also provided in the upper cavity 150 above the waste water hole 1122. A waste water regulating valve core 158 extending into the waste water hole 1122 is installed in the regulating valve mounting hole 157 by means of threaded assembly. By rotating the waste water regulating valve core 158, the waste water outlet gap 1123 between the waste water regulating valve core 158 and the waste water hole 1122 can be adjusted, and thus the waste water flow rate flowing into the waste water outlet flow channel 133 can be adjusted, and the purpose of adjusting the waste water ratio can be achieved.

[0060] A hole 159 is provided on the cover 155 above the regulating valve mounting hole 157, and a hole cover 159' is provided on the hole 159. When it is necessary to rotate the waste water regulating valve core 158, the hole cover 159' is removed, and with a corresponding valve core rotating tool, it is inserted into the waste water regulating valve core 158 through the hole 159 to rotate the waste water regulating valve core 158 to adjust the waste water ratio.

[0061] By installing the pressure sensor 154' and the waste water regulating valve core 158 on the top of the cylinder cover 10, it is convenient to observe the water pressure in the cylinder and also convenient to adjust the waste water ratio. Since the pressure sensor 154' is directly installed on the cylinder cover 10, there is no need to open a hole in the cylinder body 20 to install the pressure sensor, reducing the risk of water leakage and simplifying the processing technology of the cylinder body.

[0062] The waste water hole 1122, the waste water outlet flow channel 133, and the waste water outlet 123 constitute the waste water flow channel.

[0063] In this embodiment, the cylinder body 20 is a cylindrical integral stainless steel shell with a closed bottom and an open top.

[0064] Again, as Figure 4 Combined Figure 5 shown, the filter element assembly 30 includes a primary filter device 31 and a reverse osmosis filter element 32. The water-retaining convex ring 905 of the primary filter device 31 is inserted into the water collection cavity 1101, and a sealing ring is provided between them. The primary filter device 31 is composed of a primary filter element 901, a lower end plate 902, and an upper end plate 903. Among them, the primary filter element 901 is of a cylindrical structure and has a central cavity 904 in the middle. The lower end plate 902 seals the lower end face of the primary filter element 901 and the lower port of the central cavity 904. The upper end plate 903 seals the upper end face of the primary filter element 901 and has a water-retaining convex ring 905 that communicates with the central cavity 904 and protrudes upward.

[0065] The reverse osmosis filter element 32 is located in the central cavity 904 of the primary filtration device 31. A water seal ring is wound around the circumferential surface of its water production end 906 and sealed with the water isolation convex ring 905 of the primary filtration device 31. Its pure water production pipe 907 is inserted into the pure water insertion cavity 111, and the two are sealed with a sealing ring, and the waste water outlet end face 908 of the reverse osmosis filter element 32 is communicated with the waste water cavity 112.

[0066] There is a gap between the circumferential surface of the primary filter element 901 and the cylinder body 20 to form a filter element water inlet part 910. The raw water entering the raw water cavity 113 enters the filter element assembly 30 through the filter element water inlet part 910 for filtration.

[0067] Both the primary filter element 901 and the reverse osmosis filter element 32 are prior arts. The primary filter element 901 is composed of a PP cotton and a carbon rod. The PP cotton can filter out sediment, oxidation substances and suspended solids in water, and the carbon rod can remove chlorine and peculiar smell in water. The reverse osmosis filter element 32 can further filter out bacteria, viruses and heavy metals in water to finally obtain pure water.

[0068] In the present utility model, since the valve cover plate 200 is not installed inside the cylinder, enough screws can be arranged around the first control valve 300, the second control valve 300', the central insertion pipe 211, the first pure water insertion pipe 212 and the second pure water insertion pipe 213 in the upper cavity part 150 to realize the connection and fixation of the valve cover plate 200 and the cover body 100. Due to having enough screws, the sealing performance of the connection between the cover plate 200 and the cover body 100 is ensured, and even if there are pressure fluctuations in each cavity or hole, it will not affect the valve cover plate 200.

[0069] The above is the flow control cylinder cover of the double-outlet water purifier of the present utility model, and its working mode is as follows:

[0070] As Figure 14 shown, connect the raw water inlet 121 to the tap water pipe, connect the two pure water outlets 122 of the pure water outlet flow channel 132 to the pure water pipes 81 of the water storage bucket and the double-outlet faucet 80 respectively, connect the waste water outlet 123 to the waste water pipe, and connect the purified water outlet 124 to the purified water pipe 82 of the double-outlet faucet 80.

[0071] When both the pure water valve 83 and the purified water valve 84 of the dual-outlet faucet 80 are closed. Initially, raw water (i.e., tap water or other unfiltered water) enters the raw water inlet flow channel 131 from the raw water inlet 121. The raw water in the raw water inlet flow channel 131 is divided into two paths. One path can flow into the cylinder through the first water inlet hole 602, the first upper half cavity, and the first water outlet hole 603, and the other path can flow into the cylinder through the second water inlet hole 602', the second upper half cavity, and the second water outlet hole 603'. The water flowing into the cylinder is filtered by the filter element assembly and then flows into the purified water outlet flow channel. When the pressure in the purified water outlet flow channel increases, it drives the second control valve 300' to cut off the second control water flow channel section, automatically closing the entry of raw water from the second control water flow channel section into the cylinder and automatically stopping the production of purified water; when the pure water in the storage bucket is full, the water pressure in the pure water outlet flow channel 132 will increase, driving the first control valve 300 to cut off the first control water flow channel section, automatically closing the entry of raw water from the first control water flow channel section into the cylinder and automatically stopping the production of pure water.

[0072] Of course, if a large-flow reverse osmosis filter element is used, such as a 1000-gallon large-flow reverse osmosis filter element, the storage bucket can be omitted, and only the pure water outlet 122 connected to the storage bucket needs to be blocked.

[0073] When pure water needs to be produced, open the pure water valve 83 in the dual-outlet faucet 80 (at this time, the purified water valve 84 is closed). Since the purified water valve 84 is closed, the water pressure in the purified water outlet flow channel 134 is still relatively high, maintaining the drive for the second control valve 300' to cut off the second control water flow channel section. And since the pure water valve 83 is opened, as the pure water in the storage bucket is consumed, the water pressure in the pure water outlet flow channel 132 decreases, releasing the first control valve 300, making the first control water flow channel section unobstructed, and the raw water can enter the cylinder through the first water inlet hole 602 via the control water flow channel section. The raw water entering the cylinder enters the primary filter element 901 from the side of the filter element water inlet part 910, enters the central cavity 904 after primary filtration, and then enters the reverse osmosis filter element 32 from the lower end face (i.e., the water inlet end face) of the reverse osmosis filter element 32. After filtration, a part becomes pure water and enters the pure water production pipe 907, flows into the storage bucket through the pure water insertion cavity 111, the pure water check valve 501, the pure water outlet flow channel 132, and the pure water outlet 122 to obtain pure water. The wastewater is discharged into the wastewater cavity 222 from the upper end face (i.e., the wastewater end face) of the reverse osmosis filter element 32. Since the water pressure in the purified water outlet flow channel 134 is high at this time, the wastewater will not be discharged from the purified water hole 1121 and can only be discharged to the sewer through the wastewater hole 1122, the wastewater outlet flow channel 133, and the wastewater outlet 123. When the pure water valve 83 is closed, as the pure water in the storage bucket is full, the water pressure in the pure water outlet flow channel 132 will increase, thereby driving the first control valve 300 to cut off the first control water flow channel section to prevent the entry of raw water and achieve automatic water control.

[0074] When water purification is required, open the water purification valve 84 in the dual-outlet faucet 80 (at this time, the pure water valve 83 is closed). Since the pure water valve 83 is closed, the water pressure in the pure water outlet flow channel is high, maintaining the drive of the first control valve 300 to cut off the first controlled water flow channel section. And because the water purification valve 84 is open, the water pressure in the water purification outlet flow channel 134 is low, releasing the second control valve 300', making the second controlled water flow channel section unobstructed. The raw water can enter the cylinder through the second controlled water flow channel section via the second water inlet hole 602'. The raw water entering the cylinder enters the primary filter element 901 from the side of the filter element water inlet part 910, enters the central cavity 904 after primary filtration, and enters the reverse osmosis filter element 32 through the lower end surface (i.e., the water inlet end surface) of the reverse osmosis filter element 32. Since the water pressure in the pure water outlet flow channel is high at this time (the water pressure in the water production pipe is also high) and the water pressure in the water purification outlet flow channel 134 is low, the water entering the reverse osmosis filter element 32 cannot flow into the water production pipe through the filtration of the reverse osmosis membrane, but directly flows to the wastewater end through the gaps on the surface of the reverse osmosis membrane, is discharged to the water purification outlet flow channel 134 from the water purification hole 1121, and finally obtains purified water directly from the dual-outlet faucet 80. Since there is a wastewater regulating valve element in the wastewater hole 1122, and the wastewater regulating valve element has a large resistance to water, even if a small amount of wastewater is discharged from the wastewater hole 1122 into the wastewater pipe, it is extremely small. When the water purification valve 84 is closed, the water pressure in the water purification outlet flow channel 134 will increase, driving the second control valve 300' to cut off the second controlled water flow channel section, preventing the raw water from entering, and realizing automatic water control.

[0075] As can be seen from the above detailed description, the present utility model has the following advantages:

[0076] By arranging the controlled water flow channel on the cylinder cover, the present utility model can facilitate the connection with external pipelines and also facilitate the direct installation of a pressure sensor on the cylinder cover, which can improve the user experience. In addition, by arranging the valve cover plate in the upper cavity outside the cover body, the valve cover plate can be fixed to the cover body with a sufficient number of screws around the control valve and the check valve, which can improve the sealing effect and will not cause the pure water check valve to be squeezed, avoiding the failure of the check valve, and thus ensuring the reliability of automatic water control.

Claims

1. A flow control cylinder cover for a dual-outlet water purifier, characterized in that: The bottom of the cylinder cover has a lower cavity with an opening facing downwards, and inside there are a first original water flow channel, a second original water flow channel, a pure water flow channel, a waste water flow channel, and a purified water flow channel. The lower cavity includes a pure water insertion cavity at the center, a waste water cavity surrounding the outside of the pure water insertion cavity, and an original water cavity surrounding the outside of the waste water cavity. Both the first original water flow channel and the second original water flow channel are connected to the original water cavity. The pure water insertion cavity is connected to the pure water flow channel, and a pure water check valve for controlling the one-way inflow of water into the pure water flow channel is provided therebetween. The waste water cavity is connected to both the waste water flow channel and the purified water flow channel, and a purified water check valve for controlling the one-way inflow of water into the purified water flow channel is provided in the purified water flow channel. Inside the cylinder cover, there is also a first control valve for controlling the on-off of the first original water flow channel according to the water pressure in the pure water flow channel and a second control valve for controlling the on-off of the second original water flow channel according to the water pressure in the purified water flow channel.

2. The flow control cylinder cover of the dual-outlet water purifier according to claim 1, characterized in that: The cylinder cover includes a cover body and a valve cover plate. The cover body further includes an upper cavity part at the top position. The valve cover plate is fixed to the bottom surface of the upper cavity part, and a first control valve cavity and a second control valve cavity are formed therebetween. The first control valve is provided in the first control valve cavity, and the second control valve is provided in the second control valve cavity. The first active valve membrane of the first control valve is located in the upper half of the first control valve cavity, and the upper half of the first control valve cavity is connected to the pure water flow channel. The first passive valve membrane of the first control valve is located in the lower half of the first control valve cavity. There is a first controlled water flow channel section located in the lower half of the first control valve cavity in the first original water flow channel. The first passive valve membrane can cut off the first controlled water flow channel section under the pressure of the first piston of the first control valve driven by the first active valve membrane. The second active valve membrane of the second control valve is located in the upper half of the second control valve cavity, and the upper half of the second control valve cavity is connected to the purified water flow channel. The second passive valve membrane of the second control valve is located in the lower half of the second control valve cavity. There is a second controlled water flow channel section located in the lower half of the second control valve cavity in the second original water flow channel. The second passive valve membrane can cut off the second controlled water flow channel section under the pressure of the second piston of the second control valve driven by the second active valve membrane.

3. The flow control cylinder cover of the double-outlet water purifier according to claim 2, characterized in that: The bottom of the first lower half cavity has a first boss. The center of the first boss has a first water inlet hole. The bottom of the first lower half cavity outside the first boss has a first water outlet hole connected to the original water cavity. The first passive valve membrane is located above the first boss. The first water inlet hole, the gap between the first passive valve membrane and the end face of the first boss, and the first water outlet hole are sequentially connected to form the first controlled water flow channel section. The bottom of the second lower half cavity has a second boss. The center of the second boss has a second water inlet hole. The bottom of the second lower half cavity outside the second boss has a second water outlet hole connected to the original water inlet cavity. The second passive valve membrane is located above the second boss. The second water inlet hole, the gap between the second passive valve membrane and the end face of the second boss, and the second water outlet hole are sequentially connected to form the second controlled water flow channel section.

4. The flow control cylinder cover of the double-outlet water purifier according to claim 2, characterized in that: The flow channel part at the middle position of the cover body has a raw water inlet flow channel, and the raw water inlet flow channel forms the first raw water flow channel through the first controlled water flow channel section and forms the second raw water flow channel through the second controlled water flow channel.

5. The flow control cylinder cover of the dual-outlet water purifier according to claim 2, characterized in that: The flow channel part at the middle position of the cover body has a purified water outlet flow channel and a wastewater outlet flow channel. The top of the wastewater chamber has a purified water hole and a wastewater hole respectively. The valve cover plate has a purified water cover plate flow channel that is communicated with the purified water outlet flow channel, the second upper half chamber, and the purified water hole. A purified water check valve is arranged between the purified water cover plate flow channel and the purified water hole, and the wastewater hole is communicated with the wastewater outlet flow channel.

6. The flow control cylinder cover of the double-outlet water purifier according to claim 1, characterized in that: A sensor installation cavity communicated with the raw water chamber is arranged on the cylinder cover, and a pressure sensor is installed in the sensor installation cavity.

7. The flow control cylinder cover of the double-outlet water purifier according to claim 2, characterized in that: A cover is further arranged on the upper chamber part.

8. The flow control cylinder cover of the double-outlet water purifier according to claim 2, characterized in that, A regulating valve installation hole above the wastewater hole located in the wastewater chamber is further arranged in the upper chamber part, and a wastewater regulating valve core extending into the wastewater hole is installed in the regulating valve installation hole.

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