Water purification equipment
By introducing adapters, pressure storage containers, and sealing components into the water purification equipment, the problem of significant differences in product structure between pure water rinsing and non-pure water rinsing has been solved, enabling rapid mode switching, reducing production and user costs, and improving user experience.
Patent Information
- Application Number
- CN202520269575.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing water purification equipment exhibits an increase in TDS value on the pure water side during standby, leading to a decrease in the quality of the first cup of pure water. Furthermore, the structural differences between pure water rinsing and non-pure water rinsing products are significant, requiring separate production. Users cannot modify the equipment according to their needs, resulting in high production costs and the idleness of older products.
The design incorporates adapters, pressure storage containers, and sealing components, enabling the water purification equipment to switch between pure water flushing and non-pure water flushing modes. Mode switching is achieved by disassembling or assembling the pressure storage container or sealing components, reducing production line modifications and product changes at the user end.
It enables rapid switching of flushing modes without changing the production line and user-end equipment, reducing production and user costs, meeting different user needs, and reducing water waste.
Smart Images
Figure CN223780032U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water treatment technical field especially relates to a water purification equipment. BACKGROUND
[0002] The existing water purification equipment mainly relies on the reverse osmosis membrane filter element to filter raw water, however, when the water purification equipment is in standby state, raw water, waste water and pure water exist in the reverse osmosis membrane filter element at the same time, wherein the raw water and waste water are in front of the membrane of the reverse osmosis membrane filter element, the pure water is in the back of the membrane, and the total dissolved solids (TDS) value of the raw water and waste water is much higher than the TDS value of the pure water, thereby making the TDS value of the pure water side increase. When the water purification equipment next time starts to produce pure water, the TDS value of the first cup of pure water produced will be relatively high, which affects the experience of the user. Therefore, the existing water purification equipment generally has a flushing function, which uses pure water or mixed water of pure water and raw water (i.e. non-pure water flushing) to flush the reverse osmosis membrane filter element, so as to reduce the TDS value of the first cup of pure water.
[0003] At present, there are more and more types of products using pure water to flush the reverse osmosis membrane filter element, but the market still has a large demand for products flushing the reverse osmosis membrane filter element with non-pure water. Based on this, the manufacturers will inevitably switch between the production of the two types of products. The waterway design of the pure water flushing reverse osmosis membrane filter element basically increases the flushing branch, increases the pure water storage component (pressure barrel, water tank, etc.), and increases various valve bodies and control components, which belongs to a new product design. Compared with the product of flushing the reverse osmosis membrane filter element with non-pure water, the change is larger, and a new production line or the modification of the old line is needed, which requires a large investment, high cost, and a long research and development cycle, which is not conducive to rapid production.
[0004] In addition, once the user changes the demand after purchasing the product (such as changing the product of flushing the reverse osmosis membrane filter element with non-pure water to the product of flushing the reverse osmosis membrane filter element with pure water), the user can only purchase the product with the corresponding function, which causes the old product to be idle or the problem of high cost. INVENTION CONTENTS
[0005] The utility model aims at providing a water purification equipment, which can solve the problem that the structure of the product of flushing the reverse osmosis membrane filter element with pure water and the product of flushing the reverse osmosis membrane filter element with non-pure water is different, the production line needs to be modified or developed, and the user cannot change the demand.
[0006] In order to achieve the purpose, the utility model adopts the following technical scheme:
[0007] A water purification equipment, comprising:
[0008] A filter assembly, the filter assembly comprising a reverse osmosis membrane filter element and a filter outlet;
[0009] An adapter, the adapter comprising a first communication port, a second communication port and a third communication port in communication, the first communication port being in communication with the filter outlet;
[0010] a flushing flow path, one end of the flushing flow path being connected with the second communication port, and the other end of the flushing flow path being capable of communicating with an inlet end of the reverse osmosis membrane filter core;
[0011] a pressure water storage container and a blocking member, the pressure water storage container and the blocking member being switchably detachably connected with the adapter, the pressure water storage container being capable of communicating with the third communication port when connected with the adapter, and the blocking member being capable of blocking the third communication port when connected with the adapter.
[0012] As an optional solution of the above water purifying device, the blocking member is made of elastic material.
[0013] As an optional solution of the above water purifying device, the blocking member comprises:
[0014] a blocking body, the blocking body being capable of extending into the third communication port and tightly fitting with the third communication port;
[0015] a blocking limit, the blocking limit being connected with the blocking body, and the blocking limit being capable of abutting against the adapter when the blocking body extends into the third communication port.
[0016] As an optional solution of the above water purifying device, the pressure water storage container comprises a water storage body and a connecting pipe connected with the water storage body, and the connecting pipe is capable of being nested with the adapter and being threadedly connected with the adapter.
[0017] As an optional solution of the above water purifying device, the water purifying device further comprises:
[0018] a flushing switch valve, the flushing switch valve being arranged in the flushing flow path;
[0019] a pure water supply flow path, the pure water supply flow path being communicated with the filtering outlet.
[0020] As an optional solution of the above water purifying device, the water purifying device further comprises:
[0021] a pure water switch valve, the pure water switch valve being arranged in the pure water supply flow path;
[0022] a high pressure switch, the high pressure switch being arranged in the pure water supply flow path and being located upstream of the pure water switch valve, and the high pressure switch being communicatively connected with the flushing switch valve.
[0023] As an optional solution of the above water purifying device, a flushing check valve is arranged in the flushing flow path, and the flushing check valve is capable of allowing fluid to flow from the adapter to the inlet end of the reverse osmosis membrane filter core.
[0024] As an optional solution of the water purification device, the filter assembly further comprises a PCB filter core, the PCB filter core comprising a front filter structure and a rear filter structure, an outlet end of the front filter structure being communicated with an inlet end of the reverse osmosis membrane filter core, an outlet end of the reverse osmosis membrane filter core being communicated with an inlet end of the rear filter structure, and an outlet end of the rear filter structure being communicated with the filter outlet.
[0025] As an optional solution of the water purification device, the filter assembly further comprises a booster pump between the outlet end of the front filter structure and the outlet end of the reverse osmosis membrane filter core, the flushing flow path being communicated with an inlet end of the booster pump.
[0026] As an optional solution of the water purification device, the water purification device further comprises a purified water supply flow path, the purified water supply flow path being communicated with the outlet end of the front filter structure.
[0027] The water purification device provided by the utility model has the advantages that:
[0028] The water purification device provided by the utility model can be switched between the pure water flushing mode and the non-pure water flushing mode by selecting to install the pressure water storage container or the plugging piece, the difference between the product in the pure water flushing mode and the product in the non-pure water flushing mode is reduced, only the assembly process needs to be adjusted during production, the industrial line changes little, the product can be quickly put into production, the change investment is small, and the flushing mode can be changed according to the requirement of the user end, a new product does not need to be purchased, the old product is avoided to be limited, the cost investment is reduced, and the cost investment is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 is a structural schematic view of the water purification device provided by the utility model when the pressure water storage container is assembled;
[0030] Figure 2 is a structural schematic view of the water purification device provided by the utility model when the plugging piece is assembled.
[0031] In the drawings:
[0032] 10, filter assembly; 11, PCB filter core; 111, pre-filter structure; 112, post-filter structure; 12, reverse osmosis membrane filter core; 13, booster pump; 14, first filter flow channel; 141, purified water TDS detection piece; 15, second filter flow channel; 151, filter check valve; 16, third filter flow channel; 20, adapter; 30, flushing flow path; 31, flushing on-off valve; 32, flushing check valve; 40, pressure water storage container; 50, plugging piece; 60, purified water supply flow path; 61, high-pressure switch; 62, purified water check valve; 63, purified water on-off valve; 64, purified water TDS detection piece; 65, purified water flow meter; 70, raw water supply flow path; 71, raw water TDS detection piece; 72, raw water on-off valve; 80, waste water flow path; 81, waste water check valve; 82, waste water on-off valve; 90, purified water supply flow path; 91, purified water flow meter; 92, purified water on-off valve. DETAILED DESCRIPTION
[0033] The utility model will be explained in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.
[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0035] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0036] In the description of the present embodiment, the terms "upper", "lower", "right", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.
[0037] As shown in Figure 1 The present embodiment provides a water purification device, which comprises a filter assembly 10, a raw water supply flow path 70 and a pure water supply flow path 60. The filter assembly 10 comprises a filter inlet and a filter outlet, the filter inlet is communicated with the raw water supply flow path 70, and the filter outlet is communicated with the pure water supply flow path 60. When the water purification device prepares pure water, raw water enters the filter assembly 10 through the raw water supply flow path 70 and the filter inlet, and the pure water is prepared after being filtered by the filter assembly 10, and then flows out through the filter outlet and the pure water supply flow path 60 in sequence to meet the demand of using pure water.
[0038] Among them, the water purification device can be a water purification machine, a direct drinking machine, a tea bar machine and the like which can prepare pure water.
[0039] Optionally, a raw water on-off valve 72 is arranged on the raw water supply flow path 70 to control the on-off of raw water supply; and a pure water on-off valve 63 is arranged on the pure water supply flow path 60 to control the on-off of pure water supply.
[0040] In the present embodiment, the filter assembly 10 comprises a reverse osmosis membrane filter core 12, and the core technology of the reverse osmosis membrane filter core 12 is a reverse osmosis membrane. The reverse osmosis membrane can effectively remove dissolved salts, colloids, microorganisms, organic matter and the like in raw water by using the principle of reverse osmosis, and has the advantages of good water quality after filtration, low energy consumption, no pollution and the like, so as to better improve the filtration effect on raw water.
[0041] When the water purification device is on standby, the TDS value of the pure water side of the reverse osmosis membrane will increase, so that the TDS value of the first cup of pure water is high, which affects the user experience. There are two kinds of products in the prior art, one is pure water flushing reverse osmosis membrane filter core 12, and the other is non-pure water flushing reverse osmosis membrane filter core 12. The structures of the two kinds of products are quite different, and they need to be produced by their own production lines respectively, which increases the production cost. In addition, users cannot change the flushing mode according to their needs, and need to buy new products, which causes the problem of idle old products and high cost burden.
[0042] To solve the above problems, as shown in Figure 1 and Figure 2As shown, the water purification device in the embodiment further includes an adapter 20, a flushing flow path 30, a pressure water storage container 40, and a blocking member 50. The adapter 20 includes a first communication port, a second communication port, and a third communication port in communication with each other, the first communication port is in communication with the filter outlet; one end of the flushing flow path 30 is connected with the second communication port, and the other end is in communication with the inlet end of the reverse osmosis membrane filter core 12; the pressure water storage container 40 and the blocking member 50 are detachably connected with the adapter 20 in a switchable manner, the pressure water storage container 40 can be in communication with the third communication port when connected with the adapter 20, and the blocking member 50 can block the third communication port when connected with the adapter 20. The above arrangement enables the water purification device to switch between the pure water flushing mode and the non-pure water flushing mode, reduces the difference between the product in the pure water flushing mode and the product in the non-pure water flushing mode, and the industrial lines of the two products can be shared, only the assembly process needs to be adjusted, the industrial line changes little, the production can be quickly started, and the change investment is small.
[0043] In addition, for the user end, the flushing mode can be changed according to the user's needs. When the user needs to use the non-pure water flushing mode for the purpose of shortening the flushing time, reducing water waste, etc., as shown in Figure 2 the pressure water storage container 40 is detached from the adapter 20, and the blocking member 50 is installed to block the third communication port, the non-pure water flushing can be realized, and when the reverse osmosis membrane filter core 12 needs to be flushed, the reverse osmosis membrane filter core 12 is flushed by the pure water mixed with raw water or purified water in the flushing flow path 30, the pure water consumption is reduced, thereby shortening the flushing time and reducing the total water consumption. When the user selects the pure water flushing mode for the purpose of reducing the TDS value of the first cup of pure water, as shown in Figure 1 the blocking member 50 is detached, and the pressure water storage container 40 is connected with the adapter 20, the pure water flushing can be realized. When the reverse osmosis membrane filter core 12 needs to be flushed, the reverse osmosis membrane filter core 12 is flushed by the pure water in the flushing flow path 30, which can ensure that the TDS value of the first cup of pure water is still low after the water purification device is left for a long time, and meet the user's use needs.
[0044] It should be noted here that the pressure water storage container 40 can be a pressure bucket, a water tank, or other water storage container, as long as it can drive the pure water to flow to the flushing flow path 30 by the water pressure in the container itself, thereby realizing the flushing of the reverse osmosis membrane filter core 12.
[0045] In some embodiments, the adapter 20 is a tee joint, including a first pipe, a second pipe, and a third pipe in communication with each other, the end of the first pipe forms the first communication port, the first pipe is connected with the filter assembly 10 to enable the first communication port to communicate with the filter outlet; the end of the second pipe forms the second communication port, the second pipe is connected with the flushing flow path 30 to enable the second communication port to communicate with the flushing flow path 30; the end of the third pipe forms the third communication port, the third pipe is used to detachably connect the blocking member 50 or the pressure water storage container 40 to switch the flushing mode as needed.
[0046] To ensure the sealing performance of the third communication port in the non-pure water flushing mode, in some embodiments, the blocking piece 50 is made of an elastic material. At least part of the blocking piece 50 can extend into the third pipe and seal the third communication port by the elastic force of the blocking piece 50 itself, so as to avoid water leakage at the third communication port.
[0047] Optionally, the blocking piece 50 can be made of a material with good elasticity such as soft rubber or silicone.
[0048] In some embodiments, the blocking piece 50 includes a blocking body and a blocking limit. The blocking body can extend into the third communication port and tightly fit with the third communication port to achieve the needs of blocking and sealing the third communication port. The blocking limit is connected with the blocking body and can abut against the adapter 20 when the blocking body extends into the third communication port. On the one hand, the blocking limit can limit the length of the blocking body extending into the third communication port, so as to achieve the limiting of the blocking piece 50. On the other hand, the blocking limit is located on the outside of the adapter 20, which can facilitate the disassembly and assembly of the blocking piece 50 by holding the blocking limit, and is convenient to operate.
[0049] In some embodiments, the pressure water storage container 40 includes a water storage body and a connecting pipe connected with the water storage body. The connecting pipe can be nested with the adapter 20 and be threadedly connected with the adapter 20. Specifically, the connecting pipe is nested with the third pipe and is connected with the third pipe through a threaded pair. The threaded pair not only can achieve fixed connection, but also can achieve sealing through the threaded pair, so as to avoid water leakage at the connection position.
[0050] Optionally, the connecting pipe can be sleeved on the outside of the third pipe. The connecting pipe is internally threaded, and the outer wall of the third pipe is externally threaded. The connection between the pressure water storage container 40 and the adapter 20 is achieved through the cooperation of the internal threads and the external threads.
[0051] In order to control the start and stop of the flushing of the reverse osmosis membrane filter element 12, in some embodiments, the water purification device further includes a flushing switch valve 31. The flushing switch valve 31 is arranged on the flushing flow path 30 and is used to control the opening and closing of the flushing flow path 30.
[0052] Optionally, the flushing switch valve 31 can be an electromagnetic valve to automatically control the opening and closing of the flushing flow path 30.
[0053] In order to make the opening and closing control of the flushing switch valve 31 more intelligent and simple, in some embodiments, a high-pressure switch 61 is arranged on the pure water supply flow path 60. The high-pressure switch 61 is located upstream of the pure water switch valve 63. The high-pressure switch 61 is in communication connection with the flushing switch valve 31, so as to automatically control the opening and closing of the flushing flow path 30 according to the state switching of the high-pressure switch 61.
[0054] As Figure 1As shown, when the pressure storage container 40 is connected with the adapter 20, before flushing, the pure water on-off valve 63 is closed, raw water is supplied to the filter assembly 10 through the raw water supply flow path 70, and the filtered pure water enters the pressure storage container 40 through the adapter 20. Since the first communication port of the adapter 20 and the pure water supply flow path 60 are both in communication with the filter outlet, the pressure storage container 40 and the pure water supply flow path 60 are in a communication state, and the water pressures of the two are the same. As the water in the pressure storage container 40 increases, the water pressure in the inlet end of the pressure storage container 40 and the pure water supply flow path 60 increases, and when the water pressure increases to the set pressure value of the high-pressure switch 61, the high-pressure switch 61 is switched from the normally closed state to the open state, at which time it can be judged that the pure water in the pressure storage container 40 has reached the preset storage amount, and flushing can be performed; and then the flushing on-off valve 31 is opened, and the pure water is used to flush the reverse osmosis membrane filter core 12.
[0055] It should be noted here that although the high-pressure switch 61 is in an open state, the pure water supply flow path 60 is still in a disconnected state because the pure water on-off valve 63 is closed.
[0056] In some embodiments, the water purification device further comprises a control assembly electrically connected with the high-pressure switch 61 and the flushing on-off valve 31, respectively, to control the opening and closing of the flushing on-off valve 31 according to the state of the high-pressure switch 61. When the downstream pressure of the high-pressure switch 61 reaches the set pressure value, the signal of the high-pressure switch 61 changes, the high-pressure switch 61 sends an electrical signal to the control assembly, and after the control assembly receives the electrical signal, the control assembly controls the flushing on-off valve 31 to open, so that the pure water in the pressure storage container 40 flows out under its own pressure and flushes the reverse osmosis membrane filter core 12 through the flushing flow path 30.
[0057] In some embodiments, a pure water check valve 62 is arranged on the pure water supply flow path 60, which can allow fluid to flow from the filter outlet to the pure water supply flow path 60, but can prevent water in the pure water supply flow path 60 from flowing to the filter outlet, so as to avoid backflow of pure water.
[0058] In some embodiments, a pure water flow meter 65 is arranged on the pure water supply flow path 60, which is used to detect the flow in the pure water supply flow path 60, so as to realize quantitative supply of pure water.
[0059] In some embodiments, a pure water TDS detection piece 64 is arranged on the pure water supply flow path 60, which is used to detect the TDS value of the pure water, and the pure water TDS detection piece 64 can be in communication connection with the pure water on-off valve 63, so as to close the pure water on-off valve 63 after detecting that the TDS value of the pure water increases, so as to avoid supplying pure water that does not meet the requirements to the user.
[0060] In some embodiments, the flushing flow path 30 is provided with a flushing check valve 32, which allows fluid to flow from the adapter 20 to the inlet end of the reverse osmosis membrane cartridge 12, and prevents fluid from flowing from the inlet end of the reverse osmosis membrane cartridge 12 to the adapter 20, so as to avoid backflow of water.
[0061] In some embodiments, the filter assembly 10 further comprises a PCB cartridge 11, which comprises a pre-filter structure 111 and a post-filter structure 112. The inlet end of the pre-filter structure 111 forms a filter inlet, the outlet end of the pre-filter structure 111 is in communication with the inlet end of the reverse osmosis membrane cartridge 12, the outlet end of the reverse osmosis membrane cartridge 12 is in communication with the inlet end of the post-filter structure 112, and the outlet end of the post-filter structure 112 is connected to a filter outlet. The above arrangement allows raw water to pass through three filters in total, thereby achieving good filtering effect.
[0062] Specifically, the outlet end of the pre-filter structure 111 is in communication with the inlet end of the reverse osmosis membrane cartridge 12 through a first filter flow path 14, the outlet end of the reverse osmosis membrane cartridge 12 is in communication with the inlet end of the post-filter structure 112 through a second filter flow path 15, and the outlet end of the post-filter structure 112 is in communication with the filter outlet through a third filter flow path 16.
[0063] Optionally, the second filter flow path 15 is provided with a filter check valve 151, which only allows water to flow from the reverse osmosis membrane cartridge 12 to the post-filter structure 112, so as to avoid backflow of water therein.
[0064] In some embodiments, the filter assembly 10 further comprises a booster pump 13, which is arranged in the first filter flow path 14 and located between the outlet end of the pre-filter structure 111 and the outlet end of the reverse osmosis membrane cartridge 12. The booster pump 13 can increase the pressure of the fluid flowing to the reverse osmosis membrane cartridge 12, so as to improve the filtering effect.
[0065] In some embodiments, the flushing flow path 30 is in communication with the first filter flow path 14, and the communication position is located upstream of the booster pump 13.
[0066] In some embodiments, the first filter flow path 14 is provided with a purified water TDS detection member 141, which is arranged upstream of the booster pump 13 and is used to detect the TDS value of the purified water filtered by the pre-filter structure 111.
[0067] In some embodiments, the raw water supply flow path 70 is provided with a raw water TDS detection member 71, which is used to detect the TDS value of the raw water.
[0068] In some embodiments, the purified water device further comprises a waste water flow path, which is in communication with the waste water outlet of the reverse osmosis membrane cartridge 12, and is used to discharge the filtered waste water.
[0069] Optionally, the wastewater flow path 80 is provided with a wastewater on-off valve 82 and a wastewater check valve 81 to realize the on-off control of the wastewater flow path 80 and avoid the reverse flow of wastewater.
[0070] In some embodiments, the water purification device further comprises a purified water supply flow path 90, which is in communication with the outlet end of the pre-filter structure 111, and is used to supply the purified water filtered by the pre-filter structure 111 to the user to meet the user's demand for using purified water.
[0071] Optionally, the purified water supply flow path 90 is provided with a purified water on-off valve 92 and a purified water flow meter 91, the purified water on-off valve 92 is used to control the on-off of the purified water supply flow path 90, and the purified water flow meter 91 is used to detect the flow of the purified water supply flow path 90 to control the total amount of supplied purified water.
[0072] It should be noted here that the raw water TDS detection member 71, the pure water TDS detection member 64 and the purified water TDS detection member 141 are all prior art, and any structure and principle in the prior art can be adopted in the present embodiment, which can only detect the TDS value.
[0073] The water purification device provided by the present embodiment can be switched between the pure water flushing mode and the non-pure water flushing mode, and only the pressure water storage container 40 and the blocking member 50 need to be disassembled and assembled, without the need to add a valve body or a flow path, which has small structural changes to the whole machine and is beneficial to the batch production and modification of the product. When the non-pure water flushing mode is adopted, the volume of the whole machine is small; when the pure water flushing mode is adopted, the booster pump 13 is first started to drain water, which can increase the pressure at the filtration outlet to trigger the high-pressure switch 61, and can reduce the amount of raw water or purified water upstream of the reverse osmosis membrane filter element 12, and then the flushing on-off valve 31 is opened to release the pure water from the pressure water storage container 40, which reduces the required amount of pure water for flushing, and the volume of the pressure water storage container 40 can also be smaller.
[0074] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. A water purification apparatus, characterized by comprising: The water purifying device comprises: a filter assembly (10) comprising a reverse osmosis membrane filter cartridge (12) and a filter outlet; an adapter (20) comprising first, second and third communication ports in communication with each other, the first communication port being in communication with the filter outlet; a flushing flow path (30) having one end connected to the second communication port and the other end capable of being in communication with an inlet end of the reverse osmosis membrane filter cartridge (12); a pressure storage container (40) and a blocking member (50) capable of being detachably connected to the adapter (20) in a switchable manner, the pressure storage container (40) being capable of being in communication with the third communication port when connected to the adapter (20), and the blocking member (50) being capable of blocking the third communication port when connected to the adapter (20).
2. The water purification apparatus according to claim 1, characterized by The blocking member (50) is made of an elastic material.
3. The water purification apparatus according to claim 1, characterized by The blocking member (50) comprises: a blocking body capable of being inserted into the third communication port and tightly fitted with the third communication port; a blocking limit connected to the blocking body, the blocking limit being capable of abutting against the adapter (20) when the blocking body is inserted into the third communication port.
4. The water purification apparatus according to any one of claims 1 to 3, characterized by The pressure storage container (40) comprises a storage body and a connecting pipe connected to the storage body, the connecting pipe being capable of being nested with the adapter (20) and being threadedly connected.
5. The water purification apparatus according to any one of claims 1 to 3, characterized by The water purifying device further comprises: a flushing on-off valve (31) arranged in the flushing flow path (30); a pure water supply flow path (60) in communication with the filter outlet.
6. The water purification apparatus according to claim 5, characterized by The water purifying device further comprises: a pure water on-off valve (63) arranged in the pure water supply flow path (60); a high-pressure switch (61) arranged in the pure water supply flow path (60) and located upstream of the pure water on-off valve (63), the high-pressure switch (61) being in communication connection with the flushing on-off valve (31).
7. The water purification apparatus according to any one of claims 1 to 3, characterized by A flushing check valve (32) is arranged on the flushing flow path (30), the flushing check valve (32) being capable of allowing fluid to flow from the adapter (20) to the inlet end of the reverse osmosis membrane filter cartridge (12).
8. The water purification apparatus according to any one of claims 1 to 3, characterized by The filter assembly (10) further comprises a PCB filter cartridge (11) comprising a pre-filter structure (111) and a post-filter structure (112), an outlet end of the pre-filter structure (111) being in communication with an inlet end of the reverse osmosis membrane filter cartridge (12), an outlet end of the reverse osmosis membrane filter cartridge (12) being in communication with an inlet end of the post-filter structure (112), and an outlet end of the post-filter structure (112) being in communication with the filter outlet.
9. The water purification apparatus of claim 8, wherein The filter assembly (10) further comprises a booster pump (13) arranged between the outlet end of the pre-filter structure (111) and the outlet end of the reverse osmosis membrane filter cartridge (12), the flushing flow path (30) being in communication with an inlet end of the booster pump (13).
10. The water purification apparatus of claim 8, wherein The water purifying apparatus further includes a purified water supply flow path (90) which communicates with an outlet end of the prefilter structure (111).