A pure water machine system with a flushing valve

Abstract

The present invention discloses a pure water machine system with a flushing valve, comprising a first filter group, a second filter group, a water cut-off valve, a booster pump, a large flux reverse osmosis filter group, and a high-pressure switch. The raw water pipe is connected to the first filter group, the water cut-off valve, and the second filter group in sequence through a pipeline. The water outlet of the second filter group is connected to the booster pump and the large flux reverse osmosis filter group in sequence through a pipeline. The water outlet of the large flux reverse osmosis filter group is connected to a clean water pipe and a concentrated water pipe, the clean water pipe is connected to a high-pressure switch, the high-pressure switch is connected to a clean water faucet, the concentrated water pipe is connected to the concentrated water inlet of the flushing valve, the upper end of the flushing valve is connected to the clean water pipe of the high-pressure switch clean water faucet in series, and the drain outlet of the flushing valve is connected to the concentrated water drain pipe. The present invention has a simple structure, a relatively smaller volume, and a simple production process, so the investment cost is lower.

Description

Technical Field

[0001] The invention relates to the technical field of pure water machines, and in particular to a pure water machine system with a flushing valve. Background Art

[0002] With the development of economy, water resources have deteriorated in many places, water shortage and pollution have become more and more serious, and the safety of drinking water for urban residents has become prominent. In order to solve the problem of secondary pollution of urban tap water and the harmful substances in tap water due to source water pollution, more and more household pure water machines with reverse osmosis membrane as the core filtration unit have entered thousands of households. The existing household pure water machines use reverse osmosis membrane as the core filtration unit. After multi-stage pretreatment and pressurization of tap water, it enters the reverse osmosis membrane unit. The pure water produced can fully meet the living drinking water standards of developed countries.

[0003] At present, in pure water machine systems, a flushing solenoid valve for controlling the flushing of the reverse osmosis membrane unit is generally configured on the concentrate discharge pipe. After the pure water machine system stops producing water, the flushing solenoid valve is opened to allow a large amount of concentrate to flow out, thereby flushing the reverse osmosis membrane unit. However, the flushing solenoid valve configured in this way has a relatively complex structure, high cost, and a large size, and has a high failure rate in the later stage, and more lines need to be arranged to control the flushing solenoid valve. Summary of the invention

[0004] The purpose of the present invention is to provide a pure water machine system with a flushing valve, which can achieve the flushing effect required by the reverse osmosis filter group without circuit control, and has a simple structure and a small size, so that the manufacturing process is also relatively simple and the cost investment is reduced.

[0005] In order to solve the above technical problems, the present invention adopts the following solutions:

[0006] A pure water machine system with a flushing valve comprises a first filter group, a second filter group, a water shut-off valve, a booster pump, a large-flux reverse osmosis filter group, and a high-pressure switch. A raw water pipe is connected to the first filter group, the water shut-off valve, and the second filter group in sequence through a pipeline. The water outlet of the second filter group is connected to the booster pump and the large-flux reverse osmosis filter group in sequence through a pipeline. The water outlet of the large-flux reverse osmosis filter group is connected to a clean water pipe and a concentrated water pipe, the clean water pipe is connected to a high-pressure switch, and the end of the high-pressure switch is connected to a clean water faucet. The concentrated water pipe is connected to the concentrated water inlet of the flushing valve, the upper end of the flushing valve is connected to the clean water pipe connected in series with the high-pressure switch and the clean water faucet, and the drain outlet of the flushing valve is connected to the concentrated water drain pipe.

[0007] Due to the adoption of the above technical scheme, the present invention connects the concentrated water inlet of the flushing valve on the concentrated water pipe of the large-flux reverse osmosis filter group, and the drain outlet of the flushing valve is connected to the concentrated water drain pipe. The upper end of the flushing valve is connected to the clean water pipe. When the pure water machine uses water, the flushing valve is in a blocking state with a very small flow rate. The high-pressure switch, the water cut-off valve and the booster pump are started, and the raw water enters from the raw water pipe. Some large-volume impurities are pre-filtered by the first filter group and the second filter group to avoid rapid clogging of the large-flux reverse osmosis filter group and affecting the production of clean water. The initially filtered raw water enters the large-flux reverse osmosis filter group after being pressurized by the booster pump. The increased pressure matches the working pressure of the large-flux reverse osmosis filter group to ensure that clean water can be produced normally. The clean water coming out of the large-flux reverse osmosis filter group flows to the clean water faucet through the high-pressure switch. When the clean water faucet is opened, the clean water can flow out. At this time, the pressure on the clean water pipe is small and is insufficient to meet the required pressure to open the flushing valve. The concentrated water is blocked in the flushing valve so that the working pressure of the large-flux reverse osmosis filter group It will not decrease and can continuously produce water; after closing the water purification faucet, the high-pressure switch is disconnected, the water shut-off valve and the booster pump continue to operate under the control of the delay circuit (the delay circuit is a publicly used circuit and is well known to those skilled in the art. The specific delay time is set according to needs). At this time, due to the closure of the water purification faucet, there is no water storage device on the water purification pipeline, so that the water pressure in the water purification pipe increases rapidly to reach the opening water pressure of the flushing valve. The flushing valve opens, and a large amount of concentrated water flows out through the flushing valve, thereby driving a large amount of water in the large-flux reverse osmosis filter group to flush out, achieving the effect of flushing the large-flux reverse osmosis filter group. When the delay ends, the high-pressure switch, the water shut-off valve and the booster pump stop, and the flushing stops. The flushing valve changes the flow rate of the concentrated water flow channel inside the flushing valve through the rapid change of pressure and mechanical action to achieve the effect on the large-flux reverse osmosis filter group. Compared with the solenoid valve, the structure is simpler, so the volume is relatively smaller, the production process is simple, and the investment cost is lower.

[0008] Preferably, the flushing valve also includes a valve body, a matching valve cover is provided at the upper end of the valve body, a clean water inlet connected to the clean water pipe is provided on the valve cover, a drainage cavity connected to the drain port is provided in the valve body, a blocking component for controlling the amount of water flowing into the drainage cavity is provided between the drainage cavity and the concentrated water inlet, the blocking component is located in the first blocking channel, a first diaphragm for blocking the clean water inlet and the drainage cavity is provided between the upper end of the blocking component and the clean water inlet, and the periphery of the first diaphragm is pressed and sealed by the valve cover.

[0009] Due to the adoption of the above technical solution, during the process of water use by the pure water machine, the clean water inlet on the valve cover is connected to the clean water pipe, the water pressure in the clean water pipe is relatively small, and the blocking component blocks the amount of concentrated water entering the drainage chamber from the concentrated water inlet. The concentrated water in the valve body enters the drainage chamber slowly and in small quantities through the first blocking channel, and is then discharged to the outside of the valve body through the connected drain port. When water production stops, the high-pressure switch is closed and the delay circuit is started. At this time, the booster pump and the water cut-off valve continue to operate, and the water pressure in the clean water pipe increases, thereby increasing the water pressure at the clean water inlet. The water pressure acts downward on the first diaphragm, and the periphery of the first diaphragm is pressed and sealed on the valve body through the valve cover, so that the clean water will not enter the drainage cavity from the clean water inlet, ensuring the pressure value in the clean water pipe. The first diaphragm acts downward on the flow-blocking component under the action of water pressure, so that the flow-blocking component moves downward until the flow-blocking component is separated from the first flow-blocking channel, so that the first flow-blocking channel becomes a large flow channel. At this time, a large amount of concentrated water enters the drainage cavity through the unobstructed first flow-blocking channel, and then flows into the drainage port, thereby driving the water in the large-flux reverse osmosis filter group to be discharged from the concentrated water pipe in large flux, achieving the effect of flushing the large-flux reverse osmosis filter group. The flushing valve controls the mechanical action of the internal components through pressure changes, changes the flow volume of the flushing valve, has a simple structure, and saves costs.

[0010] Preferably, the valve body is provided with a third flow-blocking channel connected to the drainage chamber, the valve body has a water-sealing port formed by the valve body, the valve body is provided with a concentrated water channel connected to the concentrated water inlet, the flow-blocking component and the first flow-blocking channel are sealed, and a second diaphragm for connecting or blocking the water-sealing port and the concentrated water channel is embedded in the third flow-blocking channel, the periphery of the second diaphragm is pressed and sealed by the outer cover, a matching pressure plate is provided at one end of the second diaphragm away from the drainage chamber, the pressure plate is sleeved on one end of the second spring, and the other end of the second spring acts on the inner wall of the outer cover.

[0011] Due to the adoption of the above technical solution, a third flow blocking channel for concentrated water to enter the drainage chamber is provided on the valve body, and a water sealing port of the valve body structure is provided inside the valve body, and the water sealing port is located at the port of the third flow blocking channel. During the process of water production and water use, the pressure at the clean water inlet is relatively small, so that concentrated water stays in the concentrated water channel until the concentrated water pressure pushes the second diaphragm open and the third flow blocking channel is connected. At this time, a small amount of concentrated water enters the drainage chamber through the third flow blocking channel, and the function of the second spring is to maintain the stability of the water pressure of water production. When water production stops, the clean water tap is closed, the high-pressure switch is closed, the delay circuit controlling the water cut-off valve and the booster pump is opened, and the water cut-off valve and the booster pump continue to operate. At this time, the pressure at the clean water inlet becomes large enough to make the flow blocking component move downward, release the obstruction to the first flow blocking channel, make the concentrated water channel and the drainage chamber connected and become a large flux flow channel, and a large amount of concentrated water enters the drainage chamber through the unobstructed first flow blocking channel, and then flows into the drainage port, thereby driving the water in the large flux reverse osmosis filter group to be discharged from the concentrated water pipe in large flux, so as to achieve the effect of flushing the large flux reverse osmosis filter group.

[0012] Preferably, a second sealing ring is sleeved on the flow-blocking component, and a second flow-blocking channel communicating with the drainage cavity is provided on the cavity of the concentrated water inlet.

[0013] Due to the adoption of the above technical solution, a matching second sealing ring is sleeved on the flow-blocking component to block the first flow-blocking channel. When water is used for water production, the pressure of the clean water inlet is insufficient, and the concentrated water can only enter the drainage chamber from the second flow-blocking channel in small quantities. When water production stops, the clean water tap is closed, the high-pressure switch is closed and the delay circuit is started. At this time, the water cut-off valve and the booster pump continue to operate under the action of the delay circuit. At this time, the pressure of the clean water inlet becomes large enough to make the flow-blocking component move downward, releasing the obstruction to the first flow-blocking channel, so that the concentrated water channel and the drainage chamber are connected and become a large-flux flow channel. A large amount of concentrated water enters the drainage chamber through the unobstructed first flow-blocking channel, and then flows into the drainage port, thereby driving the water in the large-flux reverse osmosis filter group to be discharged from the concentrated water pipe in large flux, achieving the effect of flushing the large-flux reverse osmosis filter group.

[0014] Preferably, the choke assembly includes a T-shaped first control rod, the lower end of the first control rod is integrally connected to the first choke plug, the vertical part of the first control rod is sleeved with the first flow sleeve, the lower end of the first choke plug is sleeved with one end of the first spring, the other end of the first spring acts on the first adjusting member in the valve body, the lower end of the first adjusting member is sleeved with the first sealing ring, and the first choke plug can reciprocate along the first choke channel under the action of the first spring and the internal water pressure of the clean water inlet.

[0015] Due to the adoption of the above technical solution, the choke assembly includes a T-shaped first control rod and a first choke plug. The first control rod is composed of a horizontal part and a vertical part, and the lower end of the vertical part is integrated with the first choke plug. The first flow sleeve is sleeved at the connection between the vertical part and the first choke plug. The upper surface of the horizontal part contacts the bottom surface of the first diaphragm to facilitate the pressure transmission between the first diaphragm and the first control rod. The lower end of the first choke plug is sleeved with one end of the first spring, and the other end of the first spring acts on the first adjusting member in the valve body. The lower end of the first adjusting member is sleeved with the first sealing ring, so that the concentrated water will not pass through the gap between the first adjusting member and the valve body. Seepage, maintaining the concentrated water pressure inside the valve body, the first flow blocker can reciprocate along the first flow blocker channel under the action of the first spring and the water pressure inside the clean water inlet. During the process of water production and water use, the pressure of the clean water inlet is relatively small and cannot overcome the reaction force of the first spring, so that the concentrated water can only enter the drainage chamber in small quantities through the first flow blocker channel. When water production stops, the pressure of the clean water inlet increases, which is enough to overcome the reaction force of the first spring, so that the first control rod moves downward, releasing the first flow blocker's obstruction to the concentrated water flow, changing the concentrated water flow rate, and achieving the effect of flushing the large-flux reverse osmosis filter group; after the flushing is completed, that is, the delay time is reached, the water cut-off valve and the booster pump stop working. When water is produced again, the pressure of the clean water inlet decreases, and under the action of the reaction force of the first spring, the first flow blocker is pushed upward, so that the first control rod returns to its original position, and the first control rod reciprocates under the change of the clean water inlet pressure and the action of the first spring.

[0016] Preferably, the valve body is provided with flow channels with different inner diameters, one end of the flow channel is connected to the drainage chamber, and the other end is connected to the concentrate water inlet, a second control rod is provided in the flow channel, the second control rod is T-shaped, a third spring is provided between the horizontal part of the second control rod and the bottom of the drainage chamber, a second sealing ring located at the smallest inner diameter of the flow channel is provided on the vertical part of the second control rod, the vertical hollow part of the second control rod is sleeved on the second baffle plug, and a fourth baffle channel is formed inside the vertical part of the second baffle plug, the second control rod is provided with a water hole for connecting the fourth baffle channel and the drainage chamber, a second flow sleeve is provided in the fourth baffle channel, the lower end of the second baffle plug is connected to the second adjusting member located in the valve body, the lower end of the second adjusting member is sleeved with the first sealing ring, the top end of the second baffle plug is higher than the flow channel of the concentrate water inlet, and the second control rod can make relative reciprocating motion along the second baffle plug under the action of the second spring and the water pressure inside the clean water inlet.

[0017] Due to the adoption of the above technical solution, a flow channel with unequal inner diameters is provided in the valve body, one end of the flow channel is connected to the drainage chamber, and the other end is connected to the concentrated water inlet. The vertical part of the second control rod is arranged in the flow channel, and the two ends of the flow channel are separated by the action of the second sealing ring. The second sealing ring is located at the position where the inner diameter of the flow channel is the smallest. The vertical part of the second control rod is a hollow structure. The second control rod is provided with a water through hole for connecting the fourth flow blocking channel and the drainage chamber. The second control rod is sleeved on the second flow blocking plug, so that the second control rod can make relative reciprocating motion along the second flow blocking plug under the action of the second spring and the internal water pressure of the clean water inlet. In the process of the second control rod sliding up and down, impurities on the fourth flow blocking channel can be squeezed out to avoid blocking the fourth flow blocking channel and failing to achieve pressure relief. The top of the second flow blocking plug is higher than the flow channel of the concentrated water inlet, so that in the water making During the process, concentrated water can only enter in a small amount through the fourth flow-blocking channel, then enter the drainage chamber through the water hole, and finally be discharged through the drainage port. The fourth flow-blocking channel is in the shape of a long cylinder. During the downward movement of the second control rod, the flow channel length of the fourth flow-blocking channel can be adjusted, so that the concentrated water discharge volume can be controlled more accurately. The first sealing ring sleeved at the lower end of the second adjusting member is used to prevent concentrated water leakage and maintain the concentrated water pressure inside the valve body. When the water for water production stops, the high-pressure switch is closed, and the water shut-off valve and the booster pump will not stop running immediately under the action of the delay circuit. At this time, the pressure of the clean water inlet increases, squeezing the second control rod downward until the second sealing ring on the vertical part of the second control rod exceeds the position with the smallest inner diameter of the flow channel. At this time, both ends of the flow channel are connected, and a large amount of concentrated water enters the drainage chamber through the flow channel, and then is discharged through the drainage port, thereby realizing the flushing of the large-flux reverse osmosis filter group.

[0018] The present invention has the beneficial effects:

[0019] 1. When water is produced, the pressure at the clean water inlet is low, and the displacement of the control rod cannot be changed downward, so that the concentrated water can only flow out of the blocking channel to the drain outlet slowly and in small quantities, and the pressure required for water production can be maintained normally.

[0020] 2. During flushing, the flushing valve changes the pressure of the clean water inlet quickly, and changes the flow rate of the concentrated water channel inside the flushing valve through the mechanical action of the control rod to achieve the effect on the large-flux reverse osmosis filter group. Compared with the solenoid valve, the flushing valve has a simpler structure, a relatively smaller volume, and a simpler production process, so the investment cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the water purifier system of the present invention;

[0022] Figure 2 It is a schematic diagram of the structures of Example 2 and Example 5;

[0023] Figure 3 and Figure 4is a schematic diagram of the structure of Example 3, Figure 4 for Figure 3 AA section view;

[0024] Figure 5 It is a structural schematic diagram of Example 4;

[0025] Figure 6 This is a schematic diagram of the structure of Example 6.

[0026] Figure numerals: 1-concentrated water inlet, 2-valve body, 3-drainage chamber, 4-first diaphragm, 5-clean water inlet, 6-valve cover, 7-first control rod, 8-first flow sleeve, 9-first blocking plug, 10-first spring, 11-drainage port, 12-sleeve, 13-first sealing ring, 14-first adjusting member, 15-first blocking channel, 16-second blocking channel, 17-second sealing ring, 18-third blocking channel, 19-sealing water port, 20-second spring, 21-outer cover, 22-pressing plate, 23-second diaphragm, 2 4-concentrated water channel, 25-third spring, 26-second flow sleeve, 27-fourth flow blocking channel, 28-second flow blocking plug, 29-second adjusting member, 30-water hole, 31-second control rod, 101-raw water pipe, 102-first filter group, 103-water cut-off valve, 104-second filter group, 105-boosting pump, 106-large flux reverse osmosis filter group, 107-clean water pipe, 108-concentrated water pipe, 109-high pressure switch, 110-clean water faucet, 111-tee, 112-concentrated water discharge pipe, 113-flushing valve. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0028] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "opened", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figure 1As shown, the present invention connects the concentrate inlet 1 of the flushing valve 113 to the concentrate pipe 108 of the large flux reverse osmosis filter group 106, and the drain port 11 of the flushing valve 113 is connected to the concentrate drain pipe 112. The upper end of the flushing valve 113 is connected to the vertical opening of the three-way 111 on the clean water pipe 107. The three-way 111 is located between the high-pressure switch 109 and the clean water tap 110. The two horizontal openings are connected to the high-pressure switch 109 and the clean water tap 110 respectively. When the pure water machine produces water, the flushing valve 113 is in a conduction state with a very small flow rate. The high-pressure switch 109, the water cut-off valve 103 and the booster pump 105 are started, and the raw water enters from the raw water pipe 101. Some large-volume impurities are pre-filtered by the first filter group 102 and the second filter group 104 to avoid rapid clogging of the large-flux reverse osmosis filter group 106 and affecting the production of purified water. The preliminarily filtered raw water is pressurized by the booster pump 105 and enters the large-flux reverse osmosis filter group 106. The increased pressure matches the working pressure of the large-flux reverse osmosis filter group 106 to ensure that purified water can be produced normally. The purified water from the large-flux reverse osmosis filter group 106 is passed through the high-pressure switch 109. The flow of water from the high pressure switch 109 to the clean water tap 110 is turned on, and the clean water can flow out. At this time, the pressure on the clean water pipe 107 is relatively small, which is not enough to meet the pressure required to open the flushing valve 113. The concentrated water in the flushing valve 113 does not reduce the working pressure of the large flux reverse osmosis filter group 106, and can continuously produce water. After closing the clean water tap 110, the high pressure switch 109 is turned off, and the water cut-off valve 103 and the booster pump 105 continue to operate under the control of the delay circuit (the delay circuit is a publicly available commonly used circuit and is familiar to those skilled in the art). The specific delay time is set as needed.) At this time, due to the closure of the water purification tap 110, there is no water storage device on the water purification pipe 107, so that the water pressure in the water purification pipe 107 increases rapidly, reaching the opening water pressure of the flushing valve 113. The flushing valve 113 opens, and a large amount of concentrated water flows out through the concentrated water discharge pipe 112 of the flushing valve 113, thereby driving a large amount of water in the large-flux reverse osmosis filter group 106 to flush out, achieving the effect of flushing the large-flux reverse osmosis filter group. When the delay ends, the water cut-off valve 103 and the booster pump 105 stop running. The flushing valve 113 changes the flow rate of the concentrated water flow channel inside the flushing valve 113 through the rapid change of the pressure of the clean water inlet 5, and mechanically changes the flow rate of the concentrated water flow channel inside the flushing valve 113 to achieve the effect on the large-flux reverse osmosis filter group 106. Compared with the solenoid valve, the flushing valve structure is simpler, the volume is relatively smaller, the production process is simple, and the investment cost is lower.

[0032] Example 2

[0033] In this embodiment, Figure 2As shown, the flushing valve 113 also includes a valve body 2, and a matching valve cover 6 is provided at the upper end of the valve body 2. The clean water inlet 5 on the valve cover 6 is connected to the clean water pipe 107. During the water production process of the pure water machine, clean water continuously flows out from the clean water faucet 110. At this time, the water pressure in the clean water pipe 107 is relatively small, and the flow blocking component blocks the amount of concentrated water entering the drainage chamber 3 from the concentrated water inlet 1. The concentrated water in the valve body 2 slowly and in small quantities enters the drainage chamber 3 through the first flow blocking channel 15, and is then discharged to the outside of the valve body 2 through the connected drain port 11. When the water supply is stopped, the high-pressure switch 109 is closed and the delay circuit is started. At this time, the booster pump 105 and the water cut-off valve 103 are closed with a delay, and the water pressure in the clean water pipe 107 increases, thereby increasing the water pressure at the clean water inlet 5. The water pressure acts downward on the first diaphragm 4, and the periphery of the first diaphragm 4 is pressed and sealed on the valve body 2 through the valve cover 6, so that the clean water will not enter the drainage cavity 3 from the clean water inlet 5, ensuring the pressure value in the clean water pipe 107. Under the action of the water pressure, the first diaphragm 4 acts downward on the flow-blocking component, causing the flow-blocking component to move downward. , until the blocking component is separated from the first blocking channel 15, so that the first blocking channel 15 becomes a large flow channel. At this time, a large amount of concentrated water enters the drainage chamber 3 through the unobstructed first blocking channel 15, and then flows into the drainage port 11, thereby driving the water in the large-flux reverse osmosis filter group 106 to be discharged from the concentrated water discharge pipe 112 in a large flux, thereby achieving the effect of flushing the large-flux reverse osmosis filter group 106. The flushing valve 113 controls the mechanical action of the internal components through pressure changes, changes the flow rate of the flushing valve 113, has a simple structure, and saves costs.

[0034] Example 3

[0035] In this embodiment, Figure 3 and Figure 4As shown, a third flow-blocking channel 18 for concentrated water to enter the drainage chamber 3 is opened on the valve body 2, and a water-sealing port of the valve body 2 structure is provided inside the valve body 2, and the water-sealing port is located at the port of the third flow-blocking channel 18. During the water production and water use process, the pressure at the clean water inlet 5 is relatively small, so that the concentrated water stays in the concentrated water channel 24 until the water pressure rises and pushes open the second diaphragm 23; at this time, a small amount of concentrated water enters the drainage chamber 3 through the third flow-blocking channel 18; under the fixing action of the outer cover 21, the second spring 20 applies elastic force to the pressure plate 22 in the reverse direction, so that the second diaphragm 23 can return to separate the concentrated water channel 24 and the third flow-blocking channel 18, thereby effectively maintaining the stability of the water pressure for water production. When water production stops, the water purification tap 110 is closed and the high-pressure switch 109 is turned off. At this time, the water shut-off valve 103 and the booster pump 105 continue to operate under the action of the delay circuit, so that the pressure of the clean water inlet 5 increases, causing the flow blocking component to move downward, releasing the obstruction to the first flow blocking channel 15, so that the concentrated water channel 24 and the drainage chamber 3 are connected and become a large-flux flow channel. A large amount of concentrated water enters the drainage chamber 3 through the unobstructed first flow blocking channel 15, and then flows into the drainage port 11, thereby driving the water in the large-flux reverse osmosis filter group 106 to be discharged from the concentrated water pipe in large flux, thereby achieving the effect of flushing the large-flux reverse osmosis filter group 106.

[0036] Example 4

[0037] In this embodiment, Figure 5 As shown, a matching second sealing ring 17 is sleeved on the flow-blocking component to block the first flow-blocking channel 15. When making water, the pressure of the clean water inlet 5 is insufficient, and the concentrated water can only enter the drainage chamber 3 in a small amount from the second flow-blocking channel 16; when the water for water making stops, the clean water tap 110 is closed, and the high-pressure switch 109 is turned off. At this time, the water shut-off valve 103 and the booster pump 105 continue to operate under the action of the delay circuit, so that the pressure of the clean water inlet 5 becomes large, which is enough to make the flow-blocking component move downward, releasing the obstruction to the first flow-blocking channel 15, and a large amount of concentrated water enters the drainage chamber 3 through the unobstructed first flow-blocking channel 15, and then flows into the drain port 11, thereby driving the water in the large-flux reverse osmosis filter group 106 to be discharged from the concentrated water pipe in a large flux, thereby achieving the effect of flushing the large-flux reverse osmosis filter group 106.

[0038] Example 5

[0039] On the basis of Example 2, the choke assembly includes a T-shaped first control rod 7 and a first choke plug 9. The first control rod 7 is integrated with a horizontal part and a vertical part. The lower end of the vertical part is integrated with the first choke plug 9. The connection between the vertical part and the first choke plug 9 is sleeved with a first flow sleeve 8. The upper surface of the horizontal part contacts the bottom surface of the first diaphragm 4 to facilitate the pressure transmission between the first diaphragm 4 and the first control rod 7. The lower end of the first choke plug 9 is sleeved with one end of the first spring 10, and the other end of the first spring 10 acts on the first adjusting member 14 in the valve body 2. The lower end of the first adjusting member 14 is sleeved with a first sealing ring 13, so that the concentrated water will not pass through the gap between the first adjusting member 14 and the valve body 2. The first flow blocker 9 can reciprocate along the first flow blocker channel 15 under the action of the first spring 10 and the water pressure inside the clean water inlet 5. During the process of making water and using water, the pressure of the clean water inlet 5 is relatively small and cannot overcome the elastic force of the first spring 10, so that the concentrated water can only enter the drainage chamber 3 in a small amount through the first flow blocker channel 15. When the water making and using water stops, the pressure of the clean water inlet 5 increases, which is enough to overcome the elastic force of the first spring 10, so that the first control rod 7 moves downward, releases the first flow blocker 9 from hindering the concentrated water flow, changes the concentrated water flow, and achieves the effect of flushing the large flux reverse osmosis filter group 106. When the delay time is reached, the water cut-off valve 103 and the booster pump 105 stop working. When the water is made again, the pressure of the clean water inlet 5 decreases. Under the action of the reaction force of the first spring 10, the first flow blocker 9 is pushed upward, so that the first control rod 7 returns to the initial position. The first control rod 7 reciprocates under the change of the pressure of the clean water inlet 5 and the action of the first spring 10.

[0040] Example 6

[0041] In this embodiment, Figure 6As shown, a flow channel with different inner diameters is provided in the valve body 2, one end of the flow channel is connected to the drainage chamber 3, and the other end is connected to the concentrated water inlet 1, the vertical part of the second control rod 31 is arranged in the flow channel, and the two ends of the flow channel are separated by the action of the second sealing ring 17, and the second sealing ring 17 is located at the position where the inner diameter of the flow channel is the smallest, the vertical part of the second control rod 31 is a hollow structure, and the second control rod 31 is provided with a water hole 30 for connecting the fourth blocking channel 27 and the drainage chamber 3, and the second control rod 31 is directly sleeved on the second blocking plug 28, so that the second control rod 31 can make relative reciprocating motion along the second blocking plug 28 under the action of the second spring 20 and the internal water pressure of the clean water inlet 5, and the second control rod 31 is connected to the second blocking plug 28. During the upward and downward sliding of the control rod 31, impurities on the fourth flow blocking channel 27 can be squeezed out to avoid blockage of the fourth flow blocking channel 27; the top of the second flow blocking plug 28 is higher than the flow channel of the concentrated water inlet 1, so that during the water production process, concentrated water can only enter in a small amount through the fourth flow blocking channel 27, and then enter the drainage chamber 3 through the water hole 30 through the second flow sleeve 26, and then enter the drainage port 11 from the drainage chamber 3 to be discharged to the outside. The fourth flow blocking channel 27 is a long cylindrical shape. During the downward movement of the second control rod 31, the flow channel length of the fourth flow blocking channel 27 can be adjusted, so that the concentrated water flow rate can be controlled more accurately. The first sealing ring 13 sleeved on the lower end of the second adjusting member 29 is used to prevent concentrated water leakage. When water for water production stops, the high-pressure switch 109 is closed, and the water shut-off valve 103 and the booster pump 105 continue to operate under the action of the delay circuit, so that the pressure at the clean water inlet 5 increases, squeezing the second control rod 31 downward until the second sealing ring 17 on the vertical part of the second control rod 31 exceeds the position where the inner diameter of the flow channel is the smallest. At this time, both ends of the flow channel are connected, and a large amount of concentrated water enters the drainage chamber 3 through the flow channel, and is then discharged through the drainage port 11, thereby achieving the flushing of the large-flux reverse osmosis filter group 106.

[0042] Working principle of the present invention:

[0043] During the water making process of the pure water machine, the high-pressure switch 109, the water shut-off valve 103 and the booster pump 105 are started, and the raw water enters from the raw water pipe, and some large-volume impurities are pre-filtered by the first filter group 102 and the second filter group 104. The preliminarily filtered raw water is pressurized by the booster pump 105 and enters the large-flux reverse osmosis filter group 106. The increased pressure matches the working pressure of the large-flux reverse osmosis filter group 106 to ensure that the purified water can be produced normally. The purified water coming out of the large-flux reverse osmosis filter group flows to the purified water faucet 110 through the high-pressure switch 109. When the purified water faucet 110 is turned on, the purified water can flow out. At this time, the pressure at the purified water inlet 5 connected to the purified water pipe 107 is relatively small, and it cannot be squeezed downward to move the flow-blocking component. The flow-blocking component blocks the amount of concentrated water entering the drainage chamber 3 from the concentrated water inlet 1. The concentrated water can only enter the drainage chamber 3 slowly and in small quantities through the flow-blocking channel, and then be discharged to the outside of the valve body 2 through the connected drainage port 11.

[0044] When the pure water machine stops making water, the high-pressure switch 109 is closed and the delay circuit is started. At this time, the boost pump 105 and the water shut-off valve 103 continue to run, thereby increasing the water pressure at the clean water inlet 5. The water pressure acts downward on the first diaphragm 4. The periphery of the first diaphragm 4 is pressed and sealed on the valve body 2 through the valve cover 6, so that the clean water will not enter the drainage chamber 3 from the clean water inlet 5, thereby ensuring the pressure value in the clean water pipe 107. The first diaphragm 4 acts downward on the baffle component under the action of water pressure, so that the baffle component moves downward until the baffle component is separated from the baffle channel, so that the baffle channel becomes a large flow channel. At this time, a large amount of concentrated water enters the drainage chamber 3 through the unobstructed baffle channel, and then flows into the drain port 11, thereby driving the water in the large-flux reverse osmosis filter group 106 to be discharged from the concentrated water pipe in large flux, thereby achieving the effect of flushing the large-flux reverse osmosis filter group 106.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A pure water machine system with a flushing valve, comprising a first filter group (102), a second filter group (104), a water shutoff valve (103), a booster pump (105), a large-flux reverse osmosis filter group (106), and a high-pressure switch (109); a raw water pipe (101) is connected to the first filter group (102), the water shutoff valve (103), and the second filter group (104) in sequence through pipelines; a water outlet of the second filter group (104) is connected to the booster pump (105) and the large-flux reverse osmosis filter group (106) in sequence through pipelines; a water outlet of the large-flux reverse osmosis filter group (106) is connected to a clean water pipe (107) and a concentrated water pipe (108); a high-pressure switch (109) is connected to the clean water pipe (107); and a clean water tap (110) is connected to the end of the high-pressure switch (109); the raw water pipe (101) is connected to the first filter group (102), the water shutoff valve (103), and the second filter group (104) in sequence through pipelines; The concentrated water pipe (108) is connected to the concentrated water inlet (1) of the flushing valve (113); the upper end of the flushing valve (113) is connected to the clean water pipe (107) connected in series with the high-pressure switch (109) and the clean water tap (110); and the drainage port (11) of the flushing valve (113) is connected to the concentrated water drainage pipe (112); The flushing valve further comprises a valve body (2), the upper end of the valve body (2) being provided with a matching valve cover (6), the valve cover (6) being provided with a clean water inlet (5) communicating with the clean water pipe (107), a drainage chamber (3) communicating with the drainage port (11) being provided in the valve body (2), a flow blocking component for controlling the amount of water flowing into the drainage chamber (3) being provided between the drainage chamber (3) and the concentrated water inlet (1), the flow blocking component being located in the first flow blocking channel (15), a first diaphragm (4) for blocking the clean water inlet (5) and the drainage chamber (3) being provided between the upper end of the flow blocking component and the clean water inlet (5), the periphery of the first diaphragm (4) being pressed and sealed by the valve cover (6); A flow channel with different inner diameters is provided in the valve body (2), one end of the flow channel is connected to the drainage chamber (3), and the other end is connected to the concentrated water inlet (1), a second control rod (31) is provided in the flow channel, the second control rod (31) is T-shaped, a third spring (25) is provided between the horizontal part of the second control rod (31) and the bottom of the drainage chamber (3), a second sealing ring (17) located at the smallest inner diameter of the flow channel is provided on the vertical part of the second control rod (31), the vertical part of the second control rod (31) is sleeved on the second flow blocking plug (28), and forms a fourth flow blocking channel inside with the vertical part of the second flow blocking plug (28) (27), a water hole (30) for conducting the fourth flow blocking channel (27) and the drainage chamber (3) is provided on the second control rod (31), a second flow sleeve (26) is provided in the fourth flow blocking channel (27), the lower end of the second flow blocking plug (28) is connected to the second adjusting member (29) located in the valve body (2), the lower end of the second adjusting member (29) is sleeved with a first sealing ring (13), the top end of the second flow blocking plug (28) is higher than the flow channel of the concentrated water inlet (1), and the second control rod (31) can perform relative reciprocating motion along the second flow blocking plug (28) under the action of the second spring (20) and the internal water pressure of the clean water inlet (5); A second sealing ring (17) is sleeved on the flow-blocking component, and a second flow-blocking channel (16) communicating with the drainage cavity (3) is provided on the channel of the concentrated water inlet (1).

2. A water purifier system with a flushing valve according to claim 1, characterized in that: The valve body (2) is provided with a third flow-blocking channel (18) in communication with the drainage chamber (3); the valve body (2) has a water-sealing port (19) formed by the valve body (2); the valve body (2) is provided with a concentrated water channel (24) in communication with the concentrated water inlet (1); the flow-blocking component and the first flow-blocking channel (15) are sealed; a second diaphragm (23) for connecting or blocking the water-sealing port (19) and the concentrated water channel (24) is embedded in the third flow-blocking channel (18); the periphery of the second diaphragm (23) is compressed and sealed by the outer cover (21); a matching pressure plate (22) is provided at one end of the second diaphragm (23) away from the drainage chamber (3); the pressure plate (22) is sleeved with one end of a second spring (20); the other end of the second spring (20) acts on the inner wall of the outer cover (21).

3. A water purifier system with a flushing valve according to claim 1, characterized in that: The flow blocking assembly comprises a T-shaped first control rod (7), the lower end of the first control rod (7) is integrally connected to a first flow blocking plug (9), the vertical portion of the first control rod (7) is sleeved with a first flow sleeve (8), the lower end of the first flow blocking plug (9) is sleeved with one end of a first spring (10), the other end of the first spring (10) acts on a first adjusting member (14) in the valve body (2), the lower end of the first adjusting member (14) is sleeved with a first sealing ring (13), and the first flow blocking plug (9) can reciprocate along the first flow blocking channel (15) under the action of the first spring (10) and the internal water pressure of the clean water inlet (5).

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