Double-outlet cylinder type integrated water purifier

Abstract

This invention discloses a dual-outlet cylindrical integrated water purifier, comprising a cylindrical body, a cap with an opening at the top of the cylindrical body, and a filter element assembly disposed within the cylindrical body. The cap has a first raw water channel, a second raw water channel, a pure water channel, a wastewater channel, and a pure water channel. The cap also includes a first control valve that controls the opening and closing of the first raw water channel based on the water pressure of the pure water channel, and a second control valve that controls the opening and closing of the second raw water channel based on the water pressure of the pure water channel. This dual-outlet cylindrical integrated water purifier achieves this by incorporating water control channels on the cap, facilitating connection to external pipelines and allowing for the direct installation of pressure sensors on the cap, thus improving the user experience.

Description

Technical Field

[0001] This invention belongs to the field of household water purifier technology, and particularly relates to a cylindrical integrated water purifier. Background Technology

[0002] Water is the source of life, and the quality of drinking water is closely related to people's health. After years of promoting and popularizing knowledge about drinking water and health, people have gradually come to understand the impact of drinking water quality on human health and pay more attention to drinking water safety. This has provided a great market prospect for the application of water purifier products.

[0003] A cylindrical integrated water purifier is a type of water purifier that integrates all filter elements into a cylindrical shell. It uses a flow control base to automatically open and close the water circuit, eliminating the need for pipeline connections, water pumps, or solenoid valves and other electrical components. Therefore, it can produce water without electricity and has a series of advantages such as ease of use, no power consumption, compact structure, and beautiful appearance. It is becoming an increasingly popular water purification product.

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

[0005] The applicant's invention of the first-generation dual-outlet cylindrical integrated water purifier is disclosed in Chinese patent document CN110156191A. The dual-outlet cylindrical integrated water purifier requires the mixing of wastewater and pure water to generate purified water. This results in the pure water in the storage tank being discharged when the purified water is discharged, which will cause a waste of pure water.

[0006] The applicant's invention, a second-generation dual-outlet cylindrical integrated water purifier, is disclosed in Chinese patent document CN1126243661A. This dual-outlet cylindrical integrated water purifier has a series of advantages, including independent production of pure water and purified water, large purified water production capacity, simultaneous rinsing of the reverse osmosis membrane during water purification, which helps extend the service life of the reverse osmosis membrane and save water resources.

[0007] However, existing dual-outlet cylindrical integrated water purifiers all use a flow channel in the base at the bottom of the filter cartridge to control the automatic opening and closing of the water circuit. To ensure functionality, the internal structure is complex. In addition, this structure means that a pressure gauge can only be installed on the body of the filter cartridge to monitor the water pressure inside the cartridge. Installing the pressure gauge on the body of the cartridge increases the risk of water purifier leakage and also complicates the manufacturing process.

[0008] Furthermore, both the first-generation and second-generation dual-outlet cylindrical integrated water purifiers use a water passage cover inside the cavity of the base to ensure the control valve's seal. While this prevents water leakage, the cover is only fixed to the base with screws at the edges. Since the central area contains multiple water channels, it's impossible to secure the large central area to the control base with screws. This causes the central area of ​​the cover to deform under fluctuating water pressure. Because a pure water check valve needs to be installed in the center of the cover, it is subjected to the deformation and pressure of this central area, eventually leading to its failure. Once the check valve fails, the pure water flow channel will not reach sufficient pressure to drive the control valve to cut off the original water flow when pure water is not being produced (i.e., when the faucet is closed and the machine is stopped), rendering the automatic water shut-off function ineffective. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a dual-outlet cylindrical integrated water purifier with the water control channel set on the cylinder cover, so as to overcome the defects of the prior art.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] A dual-outlet cylindrical integrated water purifier includes a cylindrical body, a cap with an opening at the top of the cylindrical body, and a filter element assembly disposed within the cylindrical body. The filter element assembly includes a pre-filter and a reverse osmosis filter located in the central cavity of the pre-filter. The reverse osmosis filter has a wastewater outlet and a pure water production pipe. The cap has a first raw water channel, a second raw water channel, a pure water channel, a wastewater channel, and a purified water channel. The first and second raw water channels are both connected to the cylindrical body. Inside the body, the pure water production pipe is connected to the pure water flow channel, and a pure water check valve is provided between them to control the one-way flow of water into the pure water flow channel. The wastewater outlet end is connected to both the wastewater flow channel and the purified water flow channel. A purified water check valve is provided in the purified water flow channel to control the one-way flow of water into the purified water flow channel. The cylinder cover is also provided with a first control valve that controls the opening and closing of the first raw water flow channel according to the water pressure of the pure water flow channel and a second control valve that controls the opening and closing of the second raw water flow channel according to the water pressure of the purified water flow channel.

[0012] By adopting the above technical solution, the dual-outlet cylinder-type integrated water purifier of the present invention realizes the water control channel on the cylinder cover, which can not only facilitate the connection with external pipelines, but also realize the direct installation of pressure sensors on the cylinder cover, thereby improving the user experience. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the front view of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the back of the display of the present invention;

[0015] Figure 3 This is a front view of the present invention;

[0016] Figure 4 for Figure 3 Sectional view along line AA;

[0017] Figure 5 for Figure 4 Enlarged view of the middle cylinder cover;

[0018] Figure 6 for Figure 3 Sectional view along the BB direction;

[0019] Figure 7 for Figure 3 C-axis sectional view;

[0020] Figure 8 for Figure 3 Sectional view along the DD direction;

[0021] Figure 9 This is a top view of the present invention;

[0022] Figure 10 for Figure 9 JJ section view in the middle;

[0023] Figure 11 for Figure 9 KK-direction sectional view in the middle;

[0024] Figure 12 To show a schematic diagram of the cover structure of the lower cavity;

[0025] Figure 13 To show a schematic diagram of the cover structure of the upper cavity;

[0026] Figure 14 This is a schematic diagram showing the connection between the water purifier and the dual-outlet faucet of the present invention. Detailed Implementation

[0027] like Figures 1 to 4 As shown, the dual-outlet cylindrical integrated water purifier of the present invention includes a cover 10, a cylinder body 20, and a filter element assembly 30. The cylinder body 20 is a cylindrical, one-piece stainless steel shell that is closed at the bottom and open at the top. The cover 10 is sealed to the top opening of the cylinder body 20 by an O-ring and secured with a clamp 40. The filter element assembly 30 is installed inside the cylinder body 20.

[0028] Combination Figures 5 to 8The cylinder cover 10 is made of plastic and has a flow control function. It 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 110 located at the bottom, a flow channel 130 located in the middle, and an upper cavity 150 located at the top.

[0029] The interior of the flow channel section 130 is further provided with 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 raw water inlet channel 131 are on the same straight line. The pure water outlet channel 132 is located in the middle of the cover 100, the raw water inlet channel 131 and the purified water outlet channel 134 are located on one side of the pure water outlet channel 132, and the wastewater outlet channel 133 is located on the other side of the pure water outlet channel 132.

[0030] The raw water inlet channel 131 connects to the outside at one end to form a raw water inlet 121, and terminates inside the channel section 130 at the other end. The purified water outlet channel 134 connects to the outside at one end to form a purified water outlet 124, and terminates inside the channel section 130 at the other end. The purified water outlet 124 is positioned on the cover 100 opposite to the raw water inlet 121. The pure water outlet channel 132 extends laterally through the entire cover 100, with both ends connecting to the outside to form pure water outlets 122. The wastewater outlet channel 133 connects to the outside at one end to form a wastewater outlet 123, and terminates inside the channel section 130 at the other end.

[0031] Raw water inlet 121, wastewater outlet 123, and one of the pure water outlets 122 are located on the same side of the cover 100 (i.e., Figure 1 , Figure 3 (As shown on the front side), the clean water outlet 124 and another pure water outlet 122 are located on the other side of the cover 100 (i.e., the front side). Figure 2 (As shown on the back side), the purified water outlet 124 is opposite to the raw water inlet 121. The inner surfaces of the openings of the raw water inlet 121, the purified water outlet 122, the wastewater outlet 123, and the purified water outlet 124 are all equipped with pipe clamps for connection to external water pipes.

[0032] like Figure 4 and Figure 5 as well as Figure 12As shown, the lower cavity 110 covers the opening at the top of the cylinder 20 and communicates with the interior of the cylinder 20. The lower cavity 110 has a centrally located water collection chamber 1101 and a raw water chamber 113 surrounding the water collection chamber 1101. The water collection chamber 1101 is divided into a centrally located pure water insertion chamber 111 and a wastewater chamber 112 surrounding the pure water insertion chamber 111. The pure water insertion chamber 111 is connected to the pure water outlet channel 132 via a pure water check valve chamber 114.

[0033] like Figure 7 , Figure 11 and Figure 12 As shown, the top of the wastewater chamber 112 has a clean water hole 1121 and a wastewater hole 1122. The wastewater hole 1122 is connected to the wastewater outlet channel 133.

[0034] For example Figure 4 , Figure 5 , Figure 10 as well as Figure 12 As shown, the bottom surface of the upper cavity 150 has a central lower insertion hole 151 that communicates with the pure water outlet channel 132. This central lower insertion hole 151 is located directly above the pure water check valve cavity 114. A pure water check valve 501 is installed in the pure water check valve cavity 114. The pure water check valve 501 and the pure water check valve cavity 114 are sealed with a sealing ring. The pure water check valve cavity 114, the pure water outlet channel 132, and the pure water outlet 122 are sequentially connected to form the pure water channel.

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

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

[0037] like Figure 11 As shown and Figure 13 As shown, the bottom surface of the upper cavity 150, located above the water purification hole 1121, has a first lower water purification hole 152 communicating with the water purification hole 1121. A water purification check valve 502 is installed inside the first lower water purification hole 152. The water purification check valve 502 and the first lower water purification hole 152 are sealed with a sealing ring.

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

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

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

[0041] It also includes a central intubation cannula 211, a first water purification cannula 212, and a second water purification cannula 213.

[0042] Among them, such as Figure 5 As shown, the lower end of the central insertion tube 211 is inserted through the lower central insertion hole 151 and pressed against the pure water check valve 501, while the upper end is inserted into the upper central insertion hole 151'. The central insertion tube 211 is sealed with both the lower central insertion hole 151 and the upper central insertion hole 151' using sealing rings. The central insertion tube 211 also has horizontal through holes 214 that allow the pure water outlet flow channel 132 to remain open on both sides.

[0043] like Figure 11 As shown, the lower end of the first water purification tube 212 is inserted into the first lower water purification hole 152 and pressed against the water purification check valve 502, while the upper end is inserted into the first upper water purification hole 152'. The first water purification tube 212 is sealed with the first lower water purification hole 152 and the first upper water purification hole 152' respectively using sealing rings.

[0044] like Figure 6 As shown, the lower end of the second water purification tube 213 is inserted into the second lower water purification hole 153, and the upper end is inserted into the second upper water purification hole 153'. The second water purification tube 213 is sealed with the second lower water purification hole 153 and the second upper water purification hole 153' respectively using sealing rings.

[0045] Continue as Figure 6 The combination shown Figure 10As shown, the first upper cavity 302 and the first lower cavity 301 are coupled to form a first control valve cavity 310, and a first control valve 300 is disposed within the first control valve cavity 310. The first control valve 300 is placed within the first control valve cavity 310, with its first active valve diaphragm 311 located within the first upper cavity 302 and its first passive valve diaphragm 312 located within the first lower cavity 301. The first control valve 300 is sealed to the inner walls of the first upper cavity 302 and the first lower cavity 301 by the annular protrusions around the first active valve diaphragm 311 and the first passive valve diaphragm 312, respectively.

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

[0047] The water purification check valve 502 allows purified water to flow from the wastewater chamber 112 to the purified water outlet channel 134, but does not allow purified water in the purified water outlet channel 134 to flow back into the wastewater chamber 112.

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

[0049] The first water inlet 602, the gap between the first activated valve diaphragm 312 and the end face of the first boss 601, and the first water outlet 603 are connected in sequence to form the first water control channel section.

[0050] A first piston 313 is located between the first active valve diaphragm 311 and the first passive valve diaphragm 312, directly above the first boss 601. When the first piston 313 moves downward under the drive of the first active valve diaphragm 311, it compresses the first passive valve diaphragm 312 to move downward and block the first water inlet 602, thus blocking the first water control channel section and preventing raw water from entering the first lower cavity 301 and flowing into the cylinder through the first water outlet 603, achieving the purpose of water cut-off. Conversely, when the first piston 313 does not compress the first passive valve diaphragm 312, the first water inlet 602 and the first water outlet 603 are connected through the gap between the first passive valve diaphragm 312 and the end face of the first boss, the first water control channel section is unobstructed, and raw water can enter the raw water chamber 113 through the water control channel section via the first water inlet 602.

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

[0052] For example Figure 6 Combination Figure 11 As shown, the second upper cavity 302' and the second lower cavity 301' are coupled to form a second control valve cavity 310'. A second control valve 300' is disposed within this second control valve cavity 310'. The second control valve 300' is placed within the second control valve cavity 310', with its second active valve diaphragm 311' located within the second upper cavity 302' and its second passive valve diaphragm 312' located within the second lower cavity 301'. The second control valve 300' achieves sealing with the inner walls of the second upper cavity 302' and the second lower cavity 301' respectively through the annular protrusions around the second active valve diaphragm 311' and the second passive valve diaphragm 312'.

[0053] The bottom of the second lower cavity 301' has an upwardly protruding second boss 601', and the center of the second boss 601' has a second water inlet 602', which is connected to the raw water inlet channel 131. The outside of the second boss 601' has a second water outlet 603', which is connected to the raw water cavity 113.

[0054] The second water inlet 602', the gap between the second activated valve diaphragm and the end face of the second boss, and the second water outlet 603' are connected in sequence to form the second water control channel section.

[0055] A second piston 313' is located between the second active valve diaphragm 311' and the second passive valve diaphragm 312'. This second piston 313' is positioned directly above the second boss 601'. When the second piston 313' moves downward under the drive of the second active valve diaphragm 311', it compresses the second passive valve diaphragm 312' to block the second water inlet 602', thus blocking the second water control channel section and preventing raw water from entering the second lower cavity 301' and flowing into the cylinder through the second water outlet 603', achieving the purpose of water cut-off. Conversely, when the second piston 313' does not compress the second passive valve diaphragm 312', the second water inlet 602' and the second water outlet 603' are connected through the gap between the second passive valve diaphragm 312' and the end face of the second boss, the second water control channel section is unobstructed, and raw water can enter the raw water chamber 113 through the water control channel section via the second water inlet 602'.

[0056] The raw water inlet 121, the raw water inlet channel 131, and the second water control channel section, which are connected in sequence, constitute the second raw water channel.

[0057] like Figure 8 Combination Figure 9 , Figure 13 As shown, the upper cavity 150 also includes a sensor mounting cavity 154, which is connected to the raw water cavity 113 via a through hole 154a. The pressure sensor 154' is sealed and installed in this sensor mounting cavity 154.

[0058] Additionally, it includes a cover 155 covering the opening of the upper cavity 150, the cover 155 having an opening 156 that exposes the display screen of the pressure sensor 154'.

[0059] like Figure 7 and Figure 13 As shown, the upper cavity 150 is also provided with a regulating valve mounting hole 157 located above the wastewater hole 1122. A wastewater regulating valve core 158, extending into the wastewater hole 1122, is installed in the regulating valve mounting hole 157 via a threaded assembly. By rotating the wastewater regulating valve core 158, the wastewater outlet gap 1123 between the wastewater regulating valve core 158 and the wastewater hole 1122 can be adjusted, thereby regulating the wastewater flow rate into the wastewater outlet channel 133, and thus achieving the purpose of regulating the wastewater ratio.

[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 turn the wastewater regulating valve core 158, the hole cover 159' is removed, and the wastewater regulating valve core 158 can be turned by inserting it into the hole 159 using a corresponding valve core turning tool to adjust the wastewater ratio.

[0061] By mounting the pressure sensor 154' and wastewater regulating valve core 158 on the top of the cylinder cover 10, it is convenient to observe the water pressure inside the cylinder and to adjust the wastewater ratio. Since the pressure sensor 154' is directly mounted on the cylinder cover 10, there is no need to install a pressure sensor in the cylinder body 20 through an opening, reducing the risk of water leakage and simplifying the cylinder manufacturing process.

[0062] Wastewater inlet 1122, wastewater outlet channel 133, and wastewater outlet 123 constitute the wastewater channel.

[0063] For example Figure 4 Combination Figure 5 As shown, the filter element assembly 30 includes a pre-filtration device 31 and a reverse osmosis filter element 32. The water-proof protrusion 905 of the pre-filtration device 31 is inserted into the water collection chamber 1101, with a sealing ring between them. The pre-filtration device 31 consists of a pre-filtration element 901, a lower end plate 902, and an upper end plate 903. The pre-filtration element 901 has a cylindrical structure with a central cavity 904. The lower end plate 902 seals the lower end face of the pre-filtration element 901 and the lower port of the central cavity 904. The upper end plate 903 seals the upper end face of the pre-filtration element 901 and has a water-proof protrusion 905 that communicates with the central cavity 904 and protrudes upwards.

[0064] The reverse osmosis filter element 32 is located in the central cavity 904 of the primary filtration device 31. A water seal ring is wrapped around the circumference of its water production end 906 to seal with the water-proof protrusion 905 of the primary filtration device 31. Its pure water production pipe 907 is inserted into the pure water insertion cavity 111. The two are sealed by a sealing ring, which makes the wastewater outlet end face 908 of the reverse osmosis filter element 32 connected to the wastewater cavity 112.

[0065] A gap exists between the peripheral surface of the primary filter element 901 and the cylinder 20, forming a filter element inlet 910. Raw water entering the raw water chamber 113 enters the filter element assembly 30 through the filter element inlet 910 for filtration.

[0066] Both the pre-filter 901 and the reverse osmosis filter 32 are existing technologies. The pre-filter 901 consists of PP cotton and a carbon rod. The PP cotton filters out sediment, oxidized substances, and suspended solids in the water, while the carbon rod removes chlorine and odors. The reverse osmosis filter 32 further filters out bacteria, viruses, and heavy metals from the water, ultimately producing pure water.

[0067] In this invention, since the valve cover plate 200 is not installed inside the cylinder, a sufficient number of screws can be arranged around the first control valve 300, the second control valve 300', the central insertion tube 211, the first purified water insertion tube 212, and the second purified water insertion tube 213 in the upper cavity 150 to achieve the connection and fixation between the valve cover plate 200 and the cover body 100. Because there are enough screws, the sealing of the connection between the cover plate 200 and the cover body 100 is ensured, and even if there are pressure fluctuations in the various cavities or holes, it will not affect the valve cover plate 200.

[0068] The above describes the dual-outlet cylinder type integrated water purifier of the present invention, and its working principle is as follows:

[0069] like Figure 14 As shown, the raw water inlet 121 is connected to the tap water pipe, the two pure water outlets 122 of the pure water outlet channel 132 are respectively connected to the water storage tank and the pure water pipe 81 of the double water faucet 80, the wastewater outlet 123 is connected to the wastewater pipe, and the clean water outlet 124 is connected to the clean water pipe 82 of the double water faucet 80.

[0070] With both the pure water valve 83 and the purified water valve 84 of the dual-outlet faucet 80 closed, initially, raw water (i.e., tap water or other unfiltered water) enters the raw water inlet channel 131 from the raw water inlet 121. The raw water inlet channel 131 is divided into two paths: one path flows into the cylinder through the first inlet hole 602, the first upper cavity, and the first outlet hole 603; the other path flows into the cylinder through the second inlet hole 602', the second upper cavity, and the second outlet hole 603'. Water flowing into the cylinder is filtered by the filter element assembly and then flows into the purified water outlet channel. When the pressure in the purified water outlet channel increases, it drives the second control valve 300' to cut off the second water control channel section, automatically shutting off the raw water from entering the cylinder from the second water control channel section and automatically stopping the production of purified water. When the water storage tank is full of pure water, the water pressure in the pure water outlet channel 132 will increase, driving the first control valve 300 to cut off the first water control channel section, automatically shutting off the raw water from entering the cylinder from the first water control channel section and automatically stopping the production of pure water.

[0071] Of course, if a high-flow-rate reverse osmosis filter cartridge is used, such as a 1000-gallon high-flow-rate reverse osmosis filter cartridge, the water storage tank can be omitted. You only need to block the pure water outlet 122 that is connected to the water storage tank.

[0072] When pure water is needed, 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 channel 134 is still relatively high, keeping the second control valve 300' shut off the second water control channel section. However, since the pure water valve 83 is open, as the pure water in the storage tank is consumed, the water pressure in the pure water outlet channel 132 decreases, releasing the first control valve 300, making the first water control channel section unobstructed, and the raw water can enter the tank through the first inlet hole 602 via the water control channel section. Raw water enters the filter cartridge 901 from the side of the filter cartridge inlet 910. After primary filtration, it enters the central cavity 904, and then enters the reverse osmosis filter cartridge 32 from the lower end face (i.e., the inlet end face). After filtration, a portion becomes pure water and enters the pure water production pipe 907. It then flows into the water storage tank through the pure water inlet chamber 111, the pure water check valve 501, the pure water outlet channel 132, and the pure water outlet 122 to obtain pure water. Wastewater is discharged into the wastewater chamber 222 from the upper end face (i.e., the wastewater end face) of the reverse osmosis filter cartridge 32. Because the water pressure in the purified water outlet channel 134 is high at this time, the wastewater will not be discharged from the purified water hole 1121, but can only be discharged into the sewer through the wastewater hole 1122, the wastewater outlet channel 133, and the wastewater outlet 123. When the pure water valve 83 is closed, as the pure water in the storage tank is full, the water pressure in the pure water outlet channel 132 will increase, thereby driving the first control valve 300 to cut off the first water control channel section, preventing raw water from entering, and realizing automatic water control.

[0073] When purified water is needed, open the purified water 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 channel is high, keeping the first control valve 300 shut off the first water control channel section. However, since the purified water valve 84 is open, the water pressure in the purified water outlet channel 134 is low, releasing the second control valve 300', making the second water control channel section unobstructed, and the raw water can enter the cylinder through the second inlet hole 602'. The raw water entering the cylinder enters the primary filter element 901 from the side of the filter element inlet 910. After primary filtration, it enters the central cavity 904 and then enters the reverse osmosis filter element 32 through the lower end face (i.e., the inlet end face). Because the water pressure in the pure water outlet channel is high (and the water pressure in the product water pipe is also high), while the water pressure in the purified water outlet channel 134 is low, the water entering the reverse osmosis filter element 32 cannot flow into the product water pipe through the reverse osmosis membrane. Instead, it flows directly through the gaps on the surface of the reverse osmosis membrane to the wastewater end, and is discharged from the purified water hole 1121 to the purified water outlet channel 134, and finally obtains purified water directly from the dual-outlet faucet 80. Because the wastewater hole 1122 has a wastewater regulating valve core, and because the wastewater regulating valve core has a large resistance to water, even if some wastewater is discharged from the wastewater hole 1122 into the wastewater pipe, it is only a very small amount. When the water purification valve 84 is closed, the water pressure in the water purification outlet channel 134 will increase, driving the second control valve 300' to cut off the second water control channel section, preventing raw water from entering, and implementing automatic water control.

[0074] As can be seen from the above detailed description, the present invention has the following advantages:

[0075] This invention, by placing the water control channel on the cylinder cover, facilitates connection to external pipelines and allows for direct installation of pressure sensors on the cylinder cover, thus improving the user experience. Furthermore, the invention utilizes a valve cover plate with an external upper cavity. This allows the valve cover plate to be secured to the cover with a sufficient number of screws surrounding the control valve and check valve, improving the sealing effect and preventing the pure water check valve from being compressed, thus avoiding check valve failure and ensuring reliable automatic water control.

Claims

1. A dual-outlet cylindrical integrated water purifier, comprising a cylindrical body, a cap with an opening at the top of the cylindrical body, and a filter element assembly disposed within the cylindrical body, the filter element assembly comprising a pre-filter and a reverse osmosis filter located in the central cavity of the pre-filter, the reverse osmosis filter having a wastewater outlet end face and a pure water production pipe, characterized in that: The cylinder cover has a first raw water channel, a second raw water channel, a pure water channel, a wastewater channel, and a clean water channel. The first raw water channel and the second raw water channel are both connected to the inside of the cylinder body. The pure water production pipe is connected to the pure water channel, and a pure water check valve is provided between them to control the one-way flow of water into the pure water channel. The wastewater outlet end face is connected to both the wastewater channel and the clean water channel. A clean water check valve is provided in the clean water channel to control the one-way flow of water into the clean water channel. The cylinder cover is also equipped with a first control valve that controls the opening and closing of the first raw water channel according to the water pressure of the pure water channel and a second control valve that controls the opening and closing of the second raw water channel according to the water pressure of the clean water channel. The cylinder cover includes a cover body and a valve cover plate. The cover body includes a lower cavity at the bottom, a flow channel at the middle, and an upper cavity at the top. The lower cavity covers the top opening of the cylinder body. The valve cover plate is fixed to the bottom surface of the upper cavity, forming a first control valve cavity and a second control valve cavity between them. The first control valve is located in the first control valve cavity, and the second control valve is located in the second control valve cavity. The first active valve diaphragm of the first control valve is located in the first upper half of the first control valve cavity, which communicates with the pure water flow channel. The first passive valve diaphragm of the first control valve is located in the first lower half of the first control valve cavity, which is connected to the first raw water flow channel. The first control valve has a first water control channel section located in the first lower half cavity. The first passive valve diaphragm can cut off the first water control channel section under the pressure of the first piston of the first control valve driven by the first active valve diaphragm. The second active valve diaphragm of the second control valve is located in the second upper half cavity of the second control valve chamber, and the second upper half cavity is connected to the clean water channel. The second passive valve diaphragm of the second control valve is located in the second lower half cavity of the second control valve chamber. The second raw water channel has a second water control channel section located in the second lower half cavity. The second passive valve diaphragm can cut off the second water control channel section under the pressure of the second piston of the second control valve driven by the second active valve diaphragm.

2. The dual-outlet cylindrical integrated water purifier according to claim 1, characterized in that: The lower cavity has a centrally located water collection chamber and a surrounding raw water chamber. The bottom of the first lower cavity has a first protrusion with a first water inlet at its center. The bottom of the first lower cavity, outside the first protrusion, has a first water outlet communicating with the raw water chamber. The first activated valve membrane is located above the first protrusion. The first water outlet is communicating with the water inlet of the filter element assembly. The first water inlet, the gap between the first activated valve membrane and the end face of the first protrusion, and the first water outlet are sequentially connected to form the first water control channel section. The bottom of the second lower cavity has a second protrusion with a second water inlet at its center. The bottom of the second lower cavity, outside the second protrusion, has a second water outlet communicating with the raw water inlet chamber. The second activated valve membrane is located above the second protrusion. The second water outlet is communicating with the water inlet of the filter element assembly. The second water inlet, the gap between the second activated valve membrane and the end face of the second protrusion, and the second water outlet are sequentially connected to form the second water control channel section.

3. The dual-outlet cylindrical integrated water purifier according to claim 2, characterized in that: The water collection chamber is divided into a pure water chamber located in the center and a wastewater chamber surrounding the pure water chamber. The pure water chamber is connected to the pure water flow channel, and a pure water check valve is provided between the two. The wastewater outlet is located in the wastewater chamber, and the wastewater chamber is connected to both the pure water flow channel and the wastewater flow channel.

4. The dual-outlet cylindrical integrated water purifier according to claim 1, characterized in that: The flow channel section has a raw water inlet flow channel, which is formed by passing through a first water control flow channel section to form a first raw water flow channel, and by passing through a second water control flow channel to form a second raw water flow channel.

5. The dual-outlet cylindrical integrated water purifier according to claim 3, characterized in that: The flow channel section has a clean water outlet flow channel and a wastewater outlet flow channel. The top of the wastewater chamber has a clean water hole and a wastewater hole respectively. The valve cover plate has a clean water cover plate flow channel that is connected to the clean water outlet flow channel, the second upper half chamber and the clean water hole. The clean water check valve is provided between the clean water cover plate flow channel and the clean water hole. The wastewater hole is connected to the wastewater outlet flow channel.

6. The dual-outlet cylindrical integrated water purifier according to claim 1, characterized in that: The cylinder is a one-piece stainless steel cylinder that is closed at the bottom and open at the top.

7. The dual-outlet cylindrical integrated water purifier according to claim 1, characterized in that: The cylinder cover is provided with a sensor mounting cavity that communicates with the inside of the cylinder, and a pressure sensor is installed in the sensor mounting cavity.

8. The dual-outlet cylindrical integrated water purifier according to claim 1, characterized in that: The upper cavity is also equipped with a cover.

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