Water production equipment with membrane heat disinfection function

Abstract

The utility model relates to a water treatment technology, and discloses water production equipment with a membrane heat disinfection function, which comprises a water inlet pipeline, a pretreatment device, a buffer water tank, a heater, a reverse osmosis membrane system and a circulating pipeline, wherein the water inlet pipeline is connected with the inlet of the buffer tank through the pretreatment device, and the outlet of the buffer tank is connected with the inlet of the reverse osmosis membrane system; a pure water side outlet of the reverse osmosis membrane system is connected with a circulating pipeline inlet, a circulating pipeline outlet is connected with a buffer water tank inlet, and a concentrated water side outlet of the reverse osmosis membrane system is connected with the buffer water tank inlet; a first water pump and a water taking point on the external water using side are sequentially arranged in a pipeline between the circulating pipeline inlet and the circulating pipeline outlet; the pretreatment device comprises at least one of a quartz sand filter, an activated carbon filter, a softening filter and a precision filter; and a reverse osmosis membrane arranged in the reverse osmosis membrane system is a thermal disinfection type membrane. The utility model aims to provide water production equipment with a membrane heat disinfection function so as to ensure the water production quality.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a water making device with membrane thermal disinfection function. Background Art

[0002] Reverse osmosis membranes are widely used in water purification, electroplating industry, water for the pharmaceutical industry, cosmetics industry, and pharmaceutical industry. At present, the reverse osmosis membranes of some water-making equipment are prone to microbial growth after a long period of use, making it difficult for the water supply quality to meet the water quality requirements of the water-using side (especially some water-using sides with sterile requirements, such as hospital dialysis water). Therefore, it is necessary to propose a water-making equipment with membrane thermal disinfection function to sterilize the reverse osmosis membrane-related components. Summary of the invention

[0003] The utility model provides a water production equipment with a membrane thermal disinfection function, aiming to realize membrane thermal disinfection treatment on a reverse osmosis membrane system in the water production equipment to ensure the quality of water production.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a water making device with membrane thermal disinfection function, comprising:

[0005] An inlet pipeline, a pretreatment device, a buffer water tank, a heater, a reverse osmosis membrane system and a circulation pipeline; wherein the inlet pipeline is connected to the inlet of the buffer water tank via the pretreatment device, and the outlet of the buffer water tank is connected to the inlet of the reverse osmosis membrane system via the heater; the pure water side outlet of the reverse osmosis membrane system is connected to the inlet of the circulation pipeline, the outlet of the circulation pipeline is connected to the inlet of the buffer water tank, and the concentrated water side outlet of the reverse osmosis membrane system is connected to the inlet of the buffer water tank; a first water pump and a water intake point on the external water use side are sequentially arranged in the pipeline between the inlet of the circulation pipeline and the outlet of the circulation pipeline; the pretreatment device includes at least one of a quartz sand filter, an activated carbon filter, a softening filter and a precision filter; the reverse osmosis membrane arranged in the reverse osmosis membrane system is a thermal disinfection type membrane.

[0006] Optionally, the reverse osmosis membrane system includes a primary system, a secondary system, a first valve and a second valve; wherein, the primary system inlet serves as the inlet of the reverse osmosis membrane system, the pure water side outlet of the primary system is connected to the secondary system inlet, and the concentrated water side outlet of the primary system is connected to the buffer water tank inlet via the first valve; the pure water side outlet of the secondary system serves as the pure water side outlet of the reverse osmosis membrane system, and the concentrated water side outlet of the secondary system is connected to the buffer water tank inlet via the second valve.

[0007] Optionally, the primary system inlet and the secondary system inlet are also connected by a pipeline, and a third valve is provided in the pipeline; the reverse osmosis membrane system is connected to the circulation pipeline inlet through a three-way valve, and the first inlet of the three-way valve is connected to the pure water side outlet of the primary system, the second inlet of the three-way valve is connected to the pure water side outlet of the secondary system, and the outlet of the three-way valve is connected to the circulation pipeline inlet.

[0008] Optionally, the primary system is provided with a first high-pressure pump and a first reverse osmosis membrane, and the first high-pressure pump is arranged in a pipeline between the inlet of the primary system and the first reverse osmosis membrane; the secondary system is provided with a second high-pressure pump and a second reverse osmosis membrane, and the second high-pressure pump is arranged in a pipeline between the inlet of the secondary system and the second reverse osmosis membrane.

[0009] Optionally, the pure water side outlet of the primary system is also connected to the buffer water tank inlet through a pipe, and a fourth valve is provided in the pipe; the pure water side outlet of the secondary system is also connected to the buffer water tank inlet through a pipe, and a fifth valve is provided in the pipe; the concentrated water side outlet of the secondary system is connected to the secondary system inlet through a pipe, and a sixth valve is provided in the pipe.

[0010] Optionally, the buffer water tank outlet is also connected to a first drainage pipeline;

[0011] And / or, the circulation pipeline is further connected to a second drainage pipeline;

[0012] And / or, the reverse osmosis membrane system is also connected to a third drainage pipeline.

[0013] Optionally, a conductivity meter is also provided in the circulation pipeline.

[0014] Optionally, a constant pressure valve is further provided in the circulation pipeline, and the constant pressure valve is arranged in the pipeline between the water intake point and the outlet of the circulation pipeline.

[0015] Optionally, a second water pump is also provided in the water inlet pipeline.

[0016] The beneficial effect of the technical solution of the utility model is that: a water-making equipment with membrane thermal disinfection function is proposed, which can perform membrane thermal disinfection treatment on the reverse osmosis membrane system by circulating high-temperature hot water, effectively kill microorganisms, and ensure that the quality of the prepared pure water meets the requirements. In addition, the solution takes into account the thermal disinfection treatment of the pure water and concentrated water outlets of the reverse osmosis membrane system, which can comprehensively clean the system, prevent microbial contamination and breeding, and improve the sanitation level of the water-making equipment. It can effectively solve the problem that the reverse osmosis membrane is prone to breeding microorganisms after a long period of use, thereby improving the quality of water supply, especially suitable for occasions with sterile requirements, such as hospital dialysis water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an embodiment of a water production device with membrane thermal disinfection function according to the utility model;

[0018] Figure 2 It is a structural schematic diagram of another embodiment of a water production equipment with membrane thermal disinfection function of the utility model;

[0019] Figure 3 This is a structural schematic diagram of another embodiment of a water production device with membrane thermal disinfection function according to the utility model;

[0020] Figure 4 This is a schematic structural diagram of another embodiment of a water production device with membrane thermal disinfection function according to the utility model.

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0025] In addition, if the description of "first", "second", etc. is involved in the utility model, it is only used for descriptive purposes (such as for distinguishing the same or similar elements), and cannot be understood as indicating or implying its relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0026] The utility model proposes a water making device with membrane thermal disinfection function, referring to Figure 1The water-making equipment with membrane thermal disinfection function includes a water inlet pipeline, a pretreatment device, a buffer water tank, a heater, a reverse osmosis membrane system and a circulation pipeline; wherein the water inlet pipeline is connected to the inlet of the buffer water tank via the pretreatment device, and the outlet of the buffer water tank is connected to the inlet of the reverse osmosis membrane system via the heater; the pure water side outlet of the reverse osmosis membrane system is connected to the inlet of the circulation pipeline, the outlet of the circulation pipeline is connected to the inlet of the buffer water tank, and the concentrated water side outlet of the reverse osmosis membrane system is connected to the inlet of the buffer water tank; a first water pump B1 and a water intake point on the external water side are sequentially arranged in the pipeline between the inlet of the circulation pipeline and the outlet of the circulation pipeline; the pretreatment device includes at least one of a quartz sand filter, an activated carbon filter, a softening filter and a precision filter; the reverse osmosis membrane arranged in the reverse osmosis membrane system is a thermal disinfection type membrane.

[0027] In this embodiment, raw water (such as tap water) introduced from the water inlet pipeline enters the buffer water tank through the pretreatment device to remove suspended particles and large particle pollutants.

[0028] Optionally, the pretreatment device includes at least one of a quartz sand filter, an activated carbon filter, a softening filter and a precision filter, that is, at least one filter needs to be selected to ensure the water quality treatment effect. Among them, the quartz sand filter is used to remove larger particles and suspended matter in the water; the activated carbon filter is used to remove odors and chemicals such as chlorine; the softening filter is used to remove hardness substances in the water; and the precision filter is used to remove tiny particles and microorganisms. And the tank of each filter is a single tank or a double tank.

[0029] The buffer tank is also called a water buffer tank or a hydraulic buffer tank (or a balancer). It is a device used to adjust the water pressure and water flow in the pipeline. The function of the buffer tank is to buffer the water flow in the pipeline system to balance the water flow and water pressure, ensure the water flow between different branches or equipment is evenly distributed, and avoid the problem of unstable water pressure or uneven water flow caused by an unbalanced pipeline system.

[0030] The outlet of the buffer water tank is connected to the inlet pipe of the reverse osmosis membrane system, and a heater is also provided in the pipe connecting the two. Therefore, the water flowing out of the buffer water tank will first pass through the heater, and then enter the reverse osmosis membrane system, and will be further filtered and separated by the reverse osmosis membrane system to produce pure water output.

[0031] It should be noted that the reverse osmosis membrane system is a device that separates and concentrates solutions through the selective permeability of the membrane. In the reverse osmosis membrane system, the concentrated water outlet and the pure water outlet are two key outlet locations. Among them, the concentrated water outlet refers to the outlet of the concentrated solution flowing out of the reverse osmosis membrane system. This outlet is used to discharge the concentrated solution after being filtered by the reverse osmosis membrane. The concentration of the concentrated water outlet is usually higher than that of the raw water; the pure water outlet refers to the outlet of the pure water after being filtered by the reverse osmosis membrane flowing out of the reverse osmosis membrane system. This outlet is used to discharge the pure water after being filtered by the reverse osmosis membrane. The solute concentration of the pure water outlet is usually much lower than that of the raw water.

[0032] The pure water outlet of the reverse osmosis membrane system is connected to the inlet of the buffer water tank through a circulation pipeline, and the inlet of the circulation pipeline is connected to the pure water outlet of the reverse osmosis membrane system, and the outlet of the circulation pipeline is connected to the inlet of the buffer water tank. The first water pump B1 and the water intake point of the external water use side are arranged in the pipeline from the inlet of the circulation pipeline to the outlet of the circulation pipeline in sequence, so that the external water use side can take out the pure water flowing in the circulation pipeline through the water intake point as needed, and the pure water (i.e., excess pure water) that is not taken out in the circulation pipeline will flow back to the buffer water tank, thereby forming a water use cycle.

[0033] Optionally, the external water use side refers to the water use environment or water use facilities outside the system, which can refer to various scenarios in life, industry, commerce or other fields that require low bacterial content in water use, such as homes, factories, offices, schools, hospitals, public places, etc. Taking the use scenario of a hospital as an example, the external water use side can be dialysis equipment used by the hospital's hemodialysis department, dialysis center, etc.

[0034] The concentrated water outlet of the reverse osmosis membrane system is connected to the inlet of the buffer water tank, so that the concentrated water generated during the operation of the reverse osmosis system can be recycled and utilized. This can reduce waste on the one hand, and is also conducive to maintaining the balance and stability of the system on the other.

[0035] Generally, when the water-making equipment is supplying water normally, the heater can be disabled, and the other parts operate normally. When the water-making equipment needs to be disinfected, the heater is enabled, so that the water flowing out of the buffer water tank will be heated by the heater before entering the reverse osmosis membrane system, so as to use hot water to perform membrane heat disinfection on the reverse osmosis membrane system, effectively killing bacteria and microorganisms, and ensuring the sanitation and safety of the system. Moreover, after the hot water flows out from the pure water side outlet of the reverse osmosis membrane system, it will also flow back to the buffer water tank through the circulation pipeline, so that the circulation pipeline and the buffer water tank can be disinfected; and the hot water flowing out of the concentrated water side outlet of the reverse osmosis membrane system can be directly returned to the buffer water tank, and the concentrated water side outlet of the reverse osmosis membrane system can be disinfected at the same time, further ensuring the water quality safety and sanitation of the system.

[0036] It should be noted that the concentrated water outlet of the reverse osmosis membrane system is often the most likely place for microorganisms to grow in the system, because the concentrated pollutants and high-concentration solutes contained in the concentrated water provide growth conditions for microorganisms. If the concentrated water outlet is not disinfected, microorganisms may grow and multiply here, pollute the system, and affect the subsequent purification effect. By disinfecting the concentrated water outlet in this way, microbial growth can be effectively prevented, the water quality safety and stability of the system can be guaranteed, the service life of the equipment can be extended, and the water production equipment can continue to provide high-quality and healthy purified water.

[0037] The reverse osmosis membrane provided in the reverse osmosis membrane system is a heat disinfection membrane, preferably a high temperature resistant heat disinfection sanitary reverse osmosis membrane, so that the reverse osmosis membrane system can withstand high temperature disinfection.

[0038] By achieving hot water circulation in this way, the reverse osmosis membrane system can be thermally disinfected (the disinfection temperature can reach 85°C, that is, the set heating temperature is preferably 85°C), and the pure and concentrated water side outlets (especially the concentrated water side outlet) of the reverse osmosis membrane system can be thermally disinfected at the same time, thereby achieving an effective sterilization effect.

[0039] In addition, the first water pump B1 in the circulation pipeline is arranged in the pipeline between the water intake point and the circulation pipeline inlet. The first water pump B1 is responsible for increasing the flow rate and water supply pressure of the water flow between the circulation pipeline inlet and the circulation pipeline outlet, which is not only convenient for water intake at the water intake point, but also can avoid the growth of microorganisms in the circulation pipeline due to the water flow being too slow and staying in the pipeline for too long. Therefore, increasing the water flow rate and water supply pressure by the first water pump B1 helps prevent the growth of microorganisms in the pipeline, reduces the accumulation of bacteria and other pollutants, and thus helps maintain the hygiene level of the equipment and the quality of pure water.

[0040] Optionally, the first water pump B1 may be a sanitary water delivery pump.

[0041] Optionally, a water supply period during off-peak hours is preset as the preset period, and the water production equipment is disinfected during the preset period. For example, from 10 pm to 4 am the next day. Once the current time is detected to enter the preset period, the device will automatically determine that the disinfection conditions are met. And within the preset period, the disinfection process is automatically performed for 5 minutes every hour. This timed rotation disinfection process can provide sufficient disinfection protection and ensure the hygiene and safety of water supply.

[0042] In addition, since the low temperature environment will affect the water production rate of the reverse osmosis membrane and cause the water production to decrease, when the water temperature is too low in winter, even if the water-making equipment does not need to be disinfected and the water supply is normal, the heater can be turned on and the water temperature can be heated by the heater to increase the water temperature, promote the water penetration and filtration rate, ensure the water production of the equipment, and prevent the reverse osmosis membrane from reducing water production due to the low temperature in winter. Ensure that the equipment can still work efficiently and stably in a low temperature environment, providing users with a reliable quality purified water source.

[0043] In one embodiment, a water-making device with a membrane thermal disinfection function is proposed. By circulating high-temperature hot water, the reverse osmosis membrane system can be thermally disinfected to effectively kill microorganisms and ensure that the quality of the prepared pure water meets the requirements. In addition, the solution takes into account the thermal disinfection of the pure water and concentrated water outlets of the reverse osmosis membrane system, which can comprehensively clean the system, prevent microbial contamination and growth, and improve the sanitation level of the water-making equipment. It can effectively solve the problem that the reverse osmosis membrane is prone to microbial growth after a long period of use, thereby improving the quality of water supply, especially suitable for occasions with sterile requirements, such as hospital dialysis water.

[0044] Moreover, by integrating the heater into the main unit of the equipment, there is no need to configure the corresponding heating device for the water-making equipment, and the buffer water tank can also be used as a hot water tank, which simplifies the structure and composition of the equipment, thereby reducing the equipment preparation cost, weight and load-bearing capacity. This integrated design not only facilitates user operation and maintenance, but also improves the overall performance and user experience of the equipment.

[0045] In one embodiment, based on the above embodiment, referring to Figure 2 The reverse osmosis membrane system includes a primary system, a secondary system, a first valve F1 and a second valve F2; wherein the primary system inlet serves as the reverse osmosis membrane system inlet, the primary system pure water side outlet is connected to the secondary system inlet, and the primary system concentrated water side outlet is connected to the buffer water tank inlet via the first valve F1; the secondary system pure water side outlet serves as the reverse osmosis membrane system pure water side outlet, and the secondary system concentrated water side outlet is connected to the buffer water tank inlet via the second valve F2.

[0046] In this embodiment, the inlet of the primary system serves as the inlet of the reverse osmosis membrane system to receive water in the water inlet pipeline. The pure water side outlet of the primary system is connected to the inlet of the secondary system to transport the water that has undergone primary treatment to the secondary treatment stage. The pure water side outlet of the secondary system serves as the pure water side outlet of the entire reverse osmosis membrane system, i.e., the pure water that is finally output. In this way, the primary system is responsible for the initial water treatment and transfers the water to the secondary system for further treatment and purification, thereby ensuring the efficiency and purification effect of the reverse osmosis membrane system in treating water quality.

[0047] Optionally, the concentrated water side outlet of the primary system is connected to the inlet of the buffer water tank by a pipe, and a first valve F1 is provided in the pipe. By controlling whether the first valve F1 is opened or not, it is possible to control whether the concentrated water produced by the primary system flows back into the buffer water tank; the concentrated water side outlet of the secondary system is connected to the inlet of the buffer water tank by a pipe, and a second valve F2 is provided in the pipe. By controlling whether the second valve F2 is opened or not, it is possible to control whether the concentrated water produced by the secondary system flows back into the buffer water tank.

[0048] The first valve F1 and the second valve F2 play the role of flow control and diversion in the system. Through this valve setting, concentrated water can be recovered and reused to reduce the waste of water resources.

[0049] Moreover, when the reverse osmosis membrane system needs to be disinfected, by opening the first valve F1 and the second valve F2, the hot water entering the reverse osmosis membrane system can be used to perform thermal disinfection on the reverse osmosis membrane, and then flow back to the balance tank from the concentrated water outlet of the primary system and the secondary system, and in this process, the concentrated water outlet of the primary system and the secondary system is disinfected. By disinfecting the concentrated water outlet in this way, the growth of microorganisms can be effectively prevented, the water quality safety and stability of the system can be guaranteed, the service life of the equipment can be extended, and the water production equipment can be ensured to continuously provide high-quality and healthy purified water sources.

[0050] In one embodiment, based on the above embodiment, referring to Figure 3 The inlet of the primary system and the inlet of the secondary system are also connected by a pipeline, and a third valve F3 is provided in the pipeline; the reverse osmosis membrane system is connected to the inlet of the circulation pipeline through a three-way valve SF, and the first inlet of the three-way valve SF is connected to the pure water side outlet of the primary system, the second inlet of the three-way valve SF is connected to the pure water side outlet of the secondary system, and the outlet of the three-way valve SF is connected to the inlet of the circulation pipeline.

[0051] In this embodiment, the primary system inlet is also connected to the secondary system inlet through a corresponding pipeline, and a third valve F3 is provided in the pipeline. By controlling the opening and closing of the third valve F3, it is possible to control whether the influent flow of the reverse osmosis membrane system needs to bypass the primary system and directly enter the secondary system, that is, if the primary system can work normally, the third valve F3 is closed; if the primary system fails, the third valve F3 is opened to allow the influent of the reverse osmosis membrane system to directly enter the secondary system for treatment.

[0052] A three-way valve SF is provided in the pipeline from the pure water side outlet of the secondary system to the inlet of the circulation pipeline. The pure water side outlet of the primary system is connected to the first inlet of the three-way valve SF, the pure water side outlet of the secondary system is connected to the second inlet of the three-way valve SF, and the outlet of the three-way valve SF is connected to the inlet of the circulation pipeline. By controlling the conduction state of the three-way valve SF, the flow direction of the pure water provided by the primary system can be controlled to decide whether to continue to supply to the secondary system for processing or to directly send it to the circulation pipeline. Among them, if the secondary system can work normally, the conduction state of the three-way valve SF is set from the second inlet to the outlet of the three-way valve SF, so that the circulation pipeline only receives the pure water provided by the secondary system; if the secondary system fails, the conduction state of the three-way valve SF is set from the first inlet to the outlet of the three-way valve SF, so that the pure water provided by the primary system bypasses the secondary system and is directly sent to the circulation pipeline.

[0053] Through the reverse osmosis membrane system structure designed above, flexible control of the inlet water flow direction and the pure water flow direction can be achieved, ensuring that the system can still operate normally when a failure occurs in the primary system or the secondary system, thereby ensuring the continuity and stability of the water treatment process.

[0054] In one embodiment, based on the above embodiment, referring to Figure 2 or Figure 3 The primary system is provided with a first high-pressure pump G1 and a first reverse osmosis membrane, and the first high-pressure pump G1 is arranged in a pipeline between the inlet of the primary system and the first reverse osmosis membrane; the secondary system is provided with a second high-pressure pump G2 and a second reverse osmosis membrane, and the second high-pressure pump G2 is arranged in a pipeline between the inlet of the secondary system and the second reverse osmosis membrane.

[0055] In this embodiment, a first high-pressure pump G1 and a first reverse osmosis membrane are provided in the primary system. The first high-pressure pump G1 is arranged in the pipeline between the primary system inlet and the first reverse osmosis membrane, and its function is to provide sufficient pressure to push the incoming water through the first reverse osmosis membrane to achieve preliminary treatment and purification of the water.

[0056] The secondary system is provided with a second high-pressure pump G2 and a second reverse osmosis membrane. The second high-pressure pump G2 is arranged in the pipeline between the inlet of the secondary system and the second reverse osmosis membrane. Its function is to provide further pressure for the water treated by the primary system, and push the water through the second reverse osmosis membrane to achieve more thorough purification and treatment.

[0057] By installing high-pressure pumps and reverse osmosis membranes in the primary system and the secondary system respectively, the reverse osmosis membrane system can treat and purify water more effectively and ensure excellent water quality. The high-pressure pump provides the necessary pressure to push water through the reverse osmosis membrane, while the reverse osmosis membrane plays the role of filtering and separating impurities, thereby achieving efficient water purification and desalination.

[0058] In one embodiment, based on the above embodiment, referring to Figure 3 The pure water side outlet of the primary system is also connected to the buffer water tank inlet through a pipeline, and a fourth valve F4 is provided in the pipeline; the pure water side outlet of the secondary system is also connected to the buffer water tank inlet through a pipeline, and a fifth valve F5 is provided in the pipeline; the concentrated water side outlet of the secondary system is connected to the secondary system inlet through a pipeline, and a sixth valve F6 is provided in the pipeline.

[0059] In this embodiment, the connection between the pure water produced by the primary system and the buffer water tank is achieved through a pipeline connection. A fourth valve F4 is provided in the pipeline to control whether the pure water produced by the primary system flows into the buffer water tank, thereby improving the reuse rate of water resources and the flexibility of the system. For example, when the water demand at the water intake point is low, the fourth valve F4 can be opened to allow part of the pure water produced by the primary system to flow directly back into the buffer water tank; or when the primary system fails and cannot effectively filter water, the fourth valve F4 can be opened (the first valve F1 can also be opened at the same time) to allow the water flowing into the primary system to flow back into the buffer water tank, thereby improving the comprehensive utilization efficiency of water resources.

[0060] Optionally, the connection between the pure water produced by the secondary system and the buffer water tank is achieved through a pipeline connection. A fifth valve F5 is provided in the pipeline to control whether the pure water produced by the secondary system flows into the buffer water tank, thereby improving the reuse rate of water resources and the flexibility of the system. For example, when the water demand at the water intake point is low, the fifth valve F5 can be opened to allow part of the pure water produced by the secondary system to flow directly back into the buffer water tank; or when the secondary system fails and cannot effectively filter water, the fifth valve F5 can be opened (the second valve F2 can also be opened at the same time) to allow the water flowing into the primary system to flow back into the buffer water tank, thereby improving the comprehensive utilization efficiency of water resources.

[0061] Optionally, the concentrated water side outlet of the secondary system is connected to the inlet of the secondary system through a pipeline connection. A sixth valve F6 is provided in the pipeline to control whether the concentrated water produced by the secondary system enters the secondary system again for treatment, thereby realizing secondary utilization and resource recovery of the concentrated water. It should be noted that since the cleanliness of the concentrated water produced by the secondary system is higher than that of the concentrated water of the primary system, when the water demand at the water intake point is high, the sixth valve F6 can be opened to allow the concentrated water produced by the secondary system to enter the secondary system again for purification treatment, thereby realizing secondary utilization of the concentrated water, and improving the comprehensive utilization efficiency of water resources while ensuring sufficient water supply.

[0062] Optionally, the first valve F1 , the second valve F2 , the third valve F3 , the fourth valve F4 , the fifth valve F5 and / or the sixth valve F6 may be manual switch valves or electric valves, preferably electric valves.

[0063] Generally speaking, when the reverse osmosis membrane system needs to be disinfected, in order to ensure the disinfection effect, the first valve F1, the second valve F2, the third valve F3, the fourth valve F4, the fifth valve F5 and the sixth valve F6 need to be fully opened so that hot water can fill the internal pipes and components of the reverse osmosis membrane system and be fully disinfected.

[0064] In one embodiment, based on the above embodiment, referring to Figure 4 The outlet of the buffer water tank is also connected to a first drainage pipeline P1;

[0065] And / or, the circulation pipeline is further connected to a second drainage pipeline P2;

[0066] And / or, the reverse osmosis membrane system is also connected to a third drainage pipeline P3.

[0067] In this embodiment, the water production equipment is provided with at least one of the first drainage pipeline P1, the second drainage pipeline P2 and the third drainage pipeline P3, and a corresponding valve is provided in the drainage pipeline, through which the use of the drainage pipeline can be controlled.

[0068] Optionally, the first drainage pipeline P1 is connected to the outlet of the buffer water tank.

[0069] Optionally, the second drainage pipeline P2 is connected to the pipeline between the water intake point and the outlet of the circulation pipeline.

[0070] Optionally, the third drainage pipeline P3 is connected to the concentrated water side outlet of the primary system.

[0071] Optionally, before the equipment is turned on to produce water each time, the equipment can be self-cleaned first, and the wastewater generated after self-cleaning can be discharged through the drainage pipeline to ensure the cleanliness of the equipment and the quality of water production.

[0072] Optionally, when the equipment is disinfected, the hot water can be quickly drained through the corresponding drainage pipes to quickly cool the equipment and quickly put it into water production work.

[0073] In one embodiment, based on the above embodiment, referring to Figure 4 A conductivity meter DY is also provided in the circulation pipeline.

[0074] In this embodiment, the conductivity meter DY is arranged in the pipeline between the inlet of the second drainage pipeline P2 and the water intake point.

[0075] Optionally, the conductivity meter DY is used to detect whether the water quality exceeds the standard. When the water quality exceeds the standard, it can be automatically drained through the drainage pipeline to ensure the water supply quality of the equipment. Through this intelligent design, the water production equipment can realize automatic detection of water quality and corresponding disposal functions to ensure that the water quality provided by the equipment meets the standard requirements.

[0076] In one embodiment, based on the above embodiment, referring to Figure 4 A constant pressure valve HF is also provided in the circulation pipeline, and the constant pressure valve HF is arranged in the pipeline between the water intake point and the outlet of the circulation pipeline.

[0077] In this embodiment, by setting a constant pressure valve HF in the pipeline from the water intake point to the outlet of the circulation pipeline, the water pressure can be monitored and regulated, the water pressure in the circulation pipeline can be kept stable, and the stability of the water supply effect can be ensured.

[0078] The constant pressure valve HF can effectively regulate the water flow in the pipeline, prevent pressure fluctuations caused by changes in flow, ensure that the water pressure fluctuates within an appropriate range, and avoid affecting the user's water experience due to unstable water pressure.

[0079] Moreover, the constant pressure valve HF can help the system control the water pressure more accurately, improve the stability and consistency of the water supply effect, and ensure that users can obtain high-quality water supply services at different times and with different water consumption.

[0080] In one embodiment, based on the above embodiment, referring to Figure 4 The water inlet pipeline is also provided with a second water pump B2. By operating the second water pump B2, the raw water passes through the filter pipeline at a higher speed and pressure, thereby improving the filtering effect of the filter pipeline, and further strengthening the water flow pressure inside the equipment, thereby further strengthening the flow rate and pressure of the water supply in the circulation pipeline.

[0081] In one embodiment, based on the above embodiment, the water production equipment further includes a controller (not shown in the figure), the control output end of the controller is electrically connected to the control end of each electronic control component in the equipment, and controls and monitors the working status of each electronic control component.

[0082] Optionally, the electronically controlled components in the device may be electric valves, water pumps, high-pressure pumps, heaters, three-way valves, etc.

[0083] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A water production equipment with membrane thermal disinfection function, characterized in that: include: An inlet pipeline, a pretreatment device, a buffer water tank, a heater, a reverse osmosis membrane system and a circulation pipeline; wherein the inlet pipeline is connected to the inlet of the buffer water tank via the pretreatment device, and the outlet of the buffer water tank is connected to the inlet of the reverse osmosis membrane system via the heater; the pure water side outlet of the reverse osmosis membrane system is connected to the inlet of the circulation pipeline, the outlet of the circulation pipeline is connected to the inlet of the buffer water tank, and the concentrated water side outlet of the reverse osmosis membrane system is connected to the inlet of the buffer water tank; a first water pump and a water intake point on the external water use side are sequentially arranged in the pipeline between the inlet of the circulation pipeline and the outlet of the circulation pipeline; the pretreatment device includes at least one of a quartz sand filter, an activated carbon filter, a softening filter and a precision filter; the reverse osmosis membrane arranged in the reverse osmosis membrane system is a thermal disinfection type membrane.

2. The water production equipment with membrane thermal disinfection function as claimed in claim 1, characterized in that: The reverse osmosis membrane system includes a primary system, a secondary system, a first valve and a second valve; wherein the primary system inlet serves as the reverse osmosis membrane system inlet, the pure water side outlet of the primary system is connected to the secondary system inlet, and the concentrated water side outlet of the primary system is connected to the buffer water tank inlet via the first valve; the pure water side outlet of the secondary system serves as the pure water side outlet of the reverse osmosis membrane system, and the concentrated water side outlet of the secondary system is connected to the buffer water tank inlet via the second valve.

3. The water production equipment with membrane thermal disinfection function as claimed in claim 2, characterized in that: The primary system inlet and the secondary system inlet are also connected by a pipeline, and a third valve is provided in the pipeline; the reverse osmosis membrane system is connected to the circulation pipeline inlet through a three-way valve, and the first inlet of the three-way valve is connected to the pure water side outlet of the primary system, the second inlet of the three-way valve is connected to the pure water side outlet of the secondary system, and the outlet of the three-way valve is connected to the circulation pipeline inlet.

4. The water production equipment with membrane thermal disinfection function as claimed in claim 2, characterized in that: The primary system is provided with a first high-pressure pump and a first reverse osmosis membrane, and the first high-pressure pump is arranged in a pipeline between the inlet of the primary system and the first reverse osmosis membrane; the secondary system is provided with a second high-pressure pump and a second reverse osmosis membrane, and the second high-pressure pump is arranged in a pipeline between the inlet of the secondary system and the second reverse osmosis membrane.

5. The water production equipment with membrane thermal disinfection function as claimed in claim 2, characterized in that: The pure water side outlet of the primary system is also connected to the buffer water tank inlet through a pipeline, and a fourth valve is provided in the pipeline; the pure water side outlet of the secondary system is also connected to the buffer water tank inlet through a pipeline, and a fifth valve is provided in the pipeline; the concentrated water side outlet of the secondary system is connected to the secondary system inlet through a pipeline, and a sixth valve is provided in the pipeline.

6. The water production equipment with membrane thermal disinfection function as claimed in claim 1, characterized in that: The outlet of the buffer water tank is also connected to a first drainage pipeline; And / or, the circulation pipeline is further connected to a second drainage pipeline; And / or, the reverse osmosis membrane system is also connected to a third drainage pipeline.

7. The water production equipment with membrane thermal disinfection function as claimed in claim 6, characterized in that: A conductivity meter is also provided in the circulation pipeline.

8. The water production equipment with membrane thermal disinfection function as claimed in claim 1, characterized in that: A constant pressure valve is also provided in the circulation pipeline, and the constant pressure valve is arranged in the pipeline between the water intake point and the outlet of the circulation pipeline.

9. The water production equipment with membrane thermal disinfection function as claimed in claim 1, characterized in that: A second water pump is also provided in the water inlet pipeline.

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