Flow channel optimization system of efficient ultrafiltration membrane water purification device

Abstract

The utility model discloses a runner optimization system of an efficient ultrafiltration membrane water purification device, which belongs to the technical field of filters and comprises a filter water tank, a main water purification cavity and a water replenishing cavity are arranged in the filter water tank, and a pressure control valve is arranged between the main water purification cavity and the water replenishing cavity; a partition plate is arranged between the main water purifying cavity and the water replenishing cavity, and the pressure control valve is fixed on the partition plate; a plurality of ultrafilters are arranged in the main water purification cavity at intervals in the length direction, a flow stabilizing channel is arranged between every two adjacent ultrafilters, one end of the pressure control valve is located in the flow stabilizing channel, the ultrafilters are arranged close to the partition plate, a main flow channel is arranged on the other side of each ultrafilter, and the main flow channel is communicated with the main water purification cavity. And the main flow channel is communicated with all the steady flow channels. The water flow in the flow stabilizing channel is kept relatively stable, so that the ultrafilter is high in water taking and filtering efficiency from two sides.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a flow channel optimization system for a high-efficiency ultrafiltration membrane water purification device. Background Technology

[0002] Ultrafiltration (UF) is a pressure-driven membrane separation technology. Its core principle is to utilize ultrafiltration membranes with pore sizes ranging from 0.001 to 0.1 micrometers to remove suspended solids, colloids, large organic molecules, bacteria, viruses, and other impurities from water, while allowing water and small-molecule solutes (such as inorganic salts and low-molecular-weight organic matter) to pass through. This technology is widely used in drinking water treatment, industrial wastewater treatment, food and pharmaceutical separation, and seawater desalination pretreatment. Flow channel design is one of the key factors in ultrafiltration membrane technology, directly affecting filtration efficiency, membrane fouling control, and operating costs.

[0003] The existing flow channels can easily cause water to directly impact the ultrafiltration membrane, which can easily create turbulence and result in insufficient contact between the water and the ultrafiltration membrane. At the same time, the existing flow channels are not conducive to cleaning the ultrafiltration membrane, which leads to a decrease in filtration efficiency after a period of use. Utility Model Content

[0004] To address the aforementioned problems, this invention aims to solve the problems described above. One objective of this invention is to provide a flow channel optimization system for a high-efficiency ultrafiltration membrane water purification device that solves the problems described above.

[0005] The solution adopted in this embodiment is: a flow channel optimization system for a high-efficiency ultrafiltration membrane water purification device, including a filter water tank, wherein a main purification chamber and a makeup water chamber are arranged inside the filter water tank, and a pressure control valve is arranged between the main purification chamber and the makeup water chamber; a partition is arranged between the main purification chamber and the makeup water chamber, and the pressure control valve is fixed to the partition; a plurality of ultrafilters are arranged at intervals along the length direction in the main purification chamber, and a flow stabilizing channel is arranged between two adjacent ultrafilters, one end of the pressure control valve is located in the flow stabilizing channel, the ultrafilters are arranged close to the partition, and a main flow channel is arranged on the other side of the ultrafilters, and the main flow channel is connected to all the flow stabilizing channels.

[0006] In order to reliably replenish water from the water replenishment chamber to the main water purification chamber, one end of the pressure control valve is located in the water replenishment chamber and the other end is located in the flow stabilization channel. Each flow stabilization channel is equipped with at least one pressure control valve. When the pressure of the main water purification chamber is less than the pressure of the water replenishment chamber, the pressure control valve opens, and the water replenishment chamber is connected to the flow stabilization channel.

[0007] To ensure sufficient water pressure to drive water replenishment and to ensure stable water replenishment, the liquid level in the water replenishment chamber is greater than the liquid level in the main clean water chamber.

[0008] A preferred technical solution is that an inlet pipe is provided on the side wall of the main water purification chamber, an inlet valve is provided on the inlet pipe, a water replenishment pipe is provided on the side wall of the water replenishment chamber, an outlet pipe is provided at the outlet end of the ultrafilter, the ultrafilter includes a plurality of ultrafilter elements, and the outlet ends of the ultrafilter elements are all connected to the outlet pipe.

[0009] To facilitate cleaning of the ultrafiltration membrane, a backwashing pipe is also included. The backwashing pipe is located in the flow stabilization channel and has several flushing holes. The flushing holes are arranged facing the ultrafiltration membrane on both sides. One end of the backwashing pipe is connected to the outlet pipe, and the other end is fixed and sealed to the bottom of the main water purification chamber. A flushing valve is provided on the backwashing pipe.

[0010] To further improve the cleaning effect, an air bubble cleaning method is introduced, and a negative pressure water purification tank is also included. The water outlet end of the water outlet pipe is connected to the negative pressure water purification tank. A water outlet valve is provided at the connection between the negative pressure water purification tank and the water outlet pipe. When the water purification is in normal operation, the water outlet valve is open, and when backwashing, the water outlet valve is closed.

[0011] Furthermore, it also includes a high-pressure air tank, the air outlet of which is connected to the side wall of the water outlet pipe. The air outlet of the high-pressure air tank is equipped with an exhaust valve. When the water purification is in normal operation, the exhaust valve is closed, and when backwashing, the exhaust valve is opened.

[0012] A preferred technical solution is that the pressure control valve includes a connecting pipe, a constriction section is provided at one end of the connecting pipe located in the water supply chamber, and a water outlet section is provided at one end of the connecting pipe located in the main purified water chamber, wherein the diameter of the water outlet section is larger than the diameter of the constriction section.

[0013] Furthermore, a compression spring and a sealing plug are provided inside the water outlet section. One end of the compression spring is fixedly connected to the water outlet section, and the other end is fixedly connected to the sealing plug. The sealing plug is slidably connected in the water outlet section, and in the initial state, the sealing plug blocks the contraction section.

[0014] A preferred technical solution is that an end cap is provided at the end of the water outlet, one end of the compression spring is fixedly connected to the end cap, and a plurality of elongated slots are provided on the side wall of the water outlet. When the pressure of the main water purification chamber is less than the pressure of the water replenishment chamber, the sealing plug moves toward the end cap, and water enters the main water purification chamber from the elongated slots.

[0015] 1. The flow channel optimization system of this utility model's high-efficiency ultrafiltration membrane water purification device has the following technical effects:

[0016] This application discloses a flow channel optimization system for a high-efficiency ultrafiltration membrane water purification device, comprising a filter tank. The filter tank contains a main purified water chamber and a makeup water chamber, with a pressure control valve positioned between them. A partition separates the main purified water chamber and the makeup water chamber, and the pressure control valve is fixed to the partition. Several ultrafilters are spaced along the length of the main purified water chamber, with a flow stabilizing channel between adjacent ultrafilters. One end of the pressure control valve is located within the flow stabilizing channel. The ultrafilters are positioned close to the partition, and a main flow channel is located on the other side of each ultrafilter, communicating with all the flow stabilizing channels. The water flow in the flow stabilizing channels remains relatively stable, resulting in high efficiency when the ultrafilters draw water from both sides for filtration.

[0017] Other features and advantages of the present invention will become clear when reading the following description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0019] Figure 1 This is a schematic diagram of the overall front structure of the flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device provided in a specific embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall rear structure of the flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device provided in a specific embodiment of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the filter tank provided in a specific embodiment of this utility model;

[0022] Figure 4 This is provided in a specific embodiment of the present utility model. Figure 3 Enlarged structural diagram of section A;

[0023] Figure 5 This is provided in a specific embodiment of the present utility model. Figure 3 Enlarged structural diagram of section B;

[0024] In the picture:

[0025] 1. Filter water tank; 101. Main purified water chamber; 102. Water replenishment chamber; 2. Backwash pipe; 3. Baffle; 4. Pressure control valve; 5. Ultrafilter; 6. High-pressure air tank; 7. Negative pressure purified water tank; 11. Main flow channel; 12. Flow stabilization channel; 13. Flushing drain pipe; 131. Drain valve; 14. Inlet pipe; 141. Inlet valve; 15. Water replenishment pipe; 151. Water replenishment valve; 21. Flushing valve; 22. Air outlet; 61. Air vent; 71. Air outlet valve; 72. Air outlet pipe; 41. Connecting pipe; 411. Contraction section; 412. Water outlet section; 42. Compression spring; 43. Sealing plug; 44. End cap; 45. Long slotted section. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0027] The flow channel optimization system of this high-efficiency ultrafiltration membrane water purification device will be described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figure 1-5As shown, this utility model provides a flow channel optimization system for a high-efficiency ultrafiltration membrane water purification device, including a filter water tank 1. The filter water tank 1 contains a main purification chamber 101 and a water replenishment chamber 102. A pressure control valve 4 is installed between the main purification chamber 101 and the water replenishment chamber 102, which functions to achieve dynamic pressure balance between the two chambers, ensuring stable water pressure and meeting filtration requirements. A partition 3 is installed between the main purification chamber 101 and the water replenishment chamber 102, and the pressure control valve 4 is fixed to the partition 3. The partition 3 separates the main purification chamber 101 and the water replenishment chamber 102, and also provides mounting support for the pressure control valve 4, ensuring its stable operation. Several ultrafilters 5 are spaced along the length of the main purification chamber 101. The ultrafilters 5 utilize their microporous structure to physically intercept impurities in the water, achieving water purification. A flow stabilizing channel 12 is provided between two adjacent ultrafilters 5. The flow stabilizing channel 12 can buffer and homogenize the water flow, preventing the water turbulence from impacting the ultrafilters 5, extending the service life of the ultrafilters 5, and improving the efficiency of the ultrafilters 5. One end of the pressure control valve 4 is located in the flow stabilizing channel 12, and the ultrafilter 5 is located near the partition 3. A main flow channel 11 is provided on the other side of the ultrafilter 5, and the main flow channel 11 is connected to all the flow stabilizing channels 12. When the water passes through the main flow channel 11, it smoothly enters the flow stabilizing channel 12. The ultrafilters 5 draw water from the flow stabilizing channels 12 on both sides, so that the water flow can fully contact the ultrafiltration membrane core of the ultrafilter 5. This design allows the water flow to pass through each ultrafilter 5 stably and orderly, ensuring the consistency of the filtration effect. In principle, guided by the steady flow channel 12 and the main flow channel 11, the water flow forms a stable path, reducing turbulence and dead zones. This improves the filtration efficiency of the ultrafilter 5 and reduces the problem of excessive local filtration load caused by uneven water flow, thus extending the overall service life of the ultrafilter 5. The ultrafilter element 5 can use an MBR filter membrane from Jiangsu Jiuwu High-Tech Co., Ltd.

[0029] Water replenishment mechanism of pressure control valve 4: To stably replenish water from the water replenishment chamber 102 to the main purified water chamber 101, one end of pressure control valve 4 is located in the water replenishment chamber 102, and the other end is located in the flow stabilizing channel 12. Each flow stabilizing channel 12 is equipped with at least one pressure control valve 4. When the pressure in the main purified water chamber 101 is lower than the pressure in the water replenishment chamber 102, pressure control valve 4 opens, connecting the water replenishment chamber 102 to the flow stabilizing channel 12. The principle is based on pressure difference. When the pressure in the main purified water chamber 101 decreases due to water usage or negative pressure filtration, a pressure difference is created between the water replenishment chamber 102 and the main purified water chamber 101. This pressure difference drives pressure control valve 4 to open, allowing water from the water replenishment chamber 102 to automatically replenish the main purified water chamber 101. This achieves automatic water replenishment without manual intervention, ensuring stable water pressure in the main purified water chamber 101 and ensuring the continuous and stable filtration process, preventing a decrease in filtration efficiency due to insufficient water pressure.

[0030] To ensure sufficient water pressure for water replenishment and to guarantee stable replenishment, the liquid level in the replenishment chamber 102 is higher than that in the main purified water chamber 101. In principle, the difference in liquid level creates a hydrostatic pressure difference; the higher liquid level in the replenishment chamber 102 generates greater hydrostatic pressure, providing sufficient power for water replenishment. The beneficial effect is ensuring the stability and timeliness of water replenishment. Even with fluctuations in water flow, the pressure difference generated by the liquid level difference allows for a continuous and stable supply of water to the main purified water chamber 101, preventing equipment malfunctions due to untimely water replenishment.

[0031] Piping and ultrafilter 5 water outlet configuration: An inlet pipe 14 is installed on the side wall of the main purified water chamber 101, and an inlet valve 141 is installed on the inlet pipe 14. The inlet valve 141 can control the water volume and flow rate entering the main purified water chamber 101, facilitating the adjustment of the filtration system's operating parameters according to actual needs. A water supply pipe 15 is installed on the side wall of the water supply chamber 102, and a water supply valve 151 is installed on the water supply pipe 15 to replenish the water supply chamber 102, ensuring that the water supply chamber 102 has sufficient water volume to maintain its water supply function. An outlet pipe 72 is installed at the outlet end of the ultrafilter 5 to discharge the water filtered by the ultrafilter 5. The ultrafilter 5 includes several ultrafilter elements, and the outlet ends of the ultrafilter elements are all connected to the outlet pipe 72. The parallel design of multiple ultrafilter elements increases the filtration area and improves the filtration efficiency. In principle, water enters the main purified water chamber 101 through the inlet pipe 14, is filtered by the ultrafiltration element of the ultrafiltration unit 5, and then flows out through the outlet pipe 72. This design allows the water to flow evenly through each ultrafiltration element, fully utilizing the filtration capacity of each element. The beneficial effect is a significant improvement in the filtration system's processing capacity, enabling it to meet the needs of larger flow rates while ensuring stable filtered water quality.

[0032] To facilitate cleaning of the ultrafiltration membrane, a backwash pipe 2 is included. The backwash pipe 2 has several air outlets 22 and is located within the flow stabilizing channel 12. The backwash pipe 2 also has several flushing holes facing the ultrafilters 5 on both sides. One end of the backwash pipe 2 is connected to the outlet pipe 72, and the other end is fixed and sealed to the bottom of the main purified water chamber 101. A flushing valve 21 is installed on the backwash pipe 2. The principle is that when backwashing of the ultrafilter 5 is required, the inlet valve 141 and outlet valve 71 are closed, and the flushing valve 21 is opened. The backwash pump uses a backwash pump to reverse the flow of filtered clean water into the ultrafilter 5, and water is sprayed onto the surface of the ultrafilter 5 through the flushing holes, washing away impurities adhering to the surface of the ultrafilter 5. The beneficial effects are that it effectively removes dirt and impurities from the surface of the ultrafilter 5, restores the filtration performance of the ultrafilter 5, extends the service life of the ultrafilter 5, reduces the replacement frequency of the ultrafilter 5, and lowers equipment maintenance costs. A flushing drain pipe 13 is provided on the side wall of the main clean water chamber 101, and a drain valve 131 is provided on the flushing drain pipe 13 to control the discharge of dirty water during backwashing.

[0033] To further enhance the cleaning effect, an air bubble cleaning method is introduced, including a negative pressure water purification tank 7. The outlet end of the water outlet pipe 72 is connected to the negative pressure water purification tank 7. A water outlet valve 71 is installed at the connection between the negative pressure water purification tank 7 and the water outlet pipe 72. During normal water purification, the water outlet valve 71 is open, and during backwashing, the water outlet valve 71 is closed. During normal water purification, the filtered water flows into the negative pressure water purification tank 7 through the water outlet pipe 72 for further treatment or storage; during backwashing, the water outlet valve 71 is closed to prevent backwash water from entering the negative pressure water purification tank 7. Furthermore, a high-pressure air tank 6 is included. The air outlet end of the high-pressure air tank 6 is connected to the side wall of the water outlet pipe 72. An exhaust valve 61 is installed at the air outlet end of the high-pressure air tank 6. During normal water purification, the exhaust valve 61 is closed, and during backwashing, the exhaust valve 61 is open. In principle, during backwashing, the exhaust valve 61 is opened simultaneously, allowing high-pressure air from the high-pressure air tank 6 to enter the outlet pipe 72. This air mixes with the backwash water to form a bubble flow. As the bubbles rise, they impact and rub against the surface of the ultrafilter 5, enhancing the cleaning effect on impurities. The beneficial effect is that the combination of bubble flow cleaning and conventional backwashing significantly improves the cleaning efficiency of the ultrafilter 5, more thoroughly removing stubborn dirt from its surface, further extending its service life, and ensuring the long-term stable operation of the filtration system. The bubbles can be used alone to backwash the ultrafilter 5, or they can be mixed with water for rinsing.

[0034] A simplified design for a pressure control valve includes a connecting pipe 41. One end of the connecting pipe 41 located in the water supply chamber 102 has a contraction section 411, and the other end located in the main clean water chamber 101 has an outlet section 412. The diameter of the outlet section 412 is larger than the diameter of the contraction section 411. This structural design, with the contraction section 411 at the water supply chamber 102 end increasing the resistance to water flow into the connecting pipe 41, and the outlet section 412 at the main clean water chamber 101 end having a larger diameter than the contraction section 411, allows for a certain degree of pressure release and stabilization when water enters the main clean water chamber 101. The principle is based on the pressure and velocity variation of fluids under different pipe diameters, adjusting the water pressure by changing the pipe diameter. The beneficial effect is that this design can more accurately control the pressure difference between the main and water supply chambers 102, making pressure regulation more stable and accurate, avoiding shocks to the equipment due to sudden pressure changes, and improving the stability and reliability of pressure regulation. Furthermore, a compression spring 42 and a sealing plug 43 are provided inside the water outlet 412. One end of the compression spring 42 is fixedly connected to the water outlet 412, and the other end is fixedly connected to the sealing plug 43. The sealing plug 43 is slidably connected in the water outlet 412. In the initial state, the sealing plug 43 blocks the contraction section 411. The combined design of the compression spring 42 and the sealing plug 43 allows the compression spring 42 to provide the initial sealing force to the sealing plug 43, enabling the sealing plug 43 to tightly block the contraction section 411 in the initial state, preventing water from flowing from the water replenishment chamber 102 into the main clean water chamber 101 when not needed. The sealing plug 43 is slidably connected in the water outlet 412. When the pressure changes, the sealing plug 43 can slide within the water outlet 412, thereby realizing the opening and closing of the pressure control valve. The principle is based on the balance between the elastic force of the compression spring 42 and the water pressure. When the pressure in the main clean water chamber 101 is less than the pressure in the water replenishment chamber 102, the water pressure overcomes the spring force and pushes the sealing plug 43 to move. The beneficial effect is that this mechanical pressure regulation structure is simple and reliable, and can automatically regulate pressure without external energy, reducing the complexity and cost of the equipment while ensuring the timeliness and accuracy of pressure regulation. Preferably, an end cap 44 is provided at the end of the water outlet 412, and one end of the compression spring 42 is fixedly connected to the end cap 44. Several elongated slots 45 are provided on the side wall of the water outlet 412. When the pressure in the main purified water chamber 101 is less than the pressure in the water replenishment chamber 102, the sealing plug 43 moves toward the end cap 44, and water enters the main purified water chamber 101 through the elongated slots 45. The end cap 44 at the end of the water outlet 412 provides a fixing point for the compression spring 42, ensuring the stable installation of the compression spring 42. The elongated slots 45 on the side wall of the water outlet 412 provide a channel for water to enter the main purified water chamber 101 when the sealing plug 43 moves toward the end cap 44. When the pressure in the main water purification chamber 101 is less than the pressure in the water replenishment chamber 102, the sealing plug 43 moves, and water flows into the main water purification chamber 101 from the long slot 45, thus realizing the opening function of the pressure control valve.The principle is to change the water flow channel by moving the sealing plug 43, and to control the water flow rate and direction using the elongated slot 45. The beneficial effect is that this design makes the pressure control valve structure more rational. The elongated slot 45 ensures smooth water flow during pressure regulation, and can automatically adjust the water flow rate according to the pressure difference, further improving the flexibility and accuracy of pressure regulation, and ensuring stable operation of the device under various working conditions.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes that element. The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. The utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flow channel optimization system of a high-efficiency ultrafiltration membrane water purification device, characterized in that: a filtered water tank is internally provided with a main water purification cavity and a water supplement cavity, a pressure control valve is arranged between the main water purification cavity and the water supplement cavity; a partition plate is arranged between the main water purification cavity and the water supplement cavity, and the pressure control valve is fixed on the partition plate; a plurality of ultrafilters are arranged in the main water purification cavity along the length direction, a steady flow channel is arranged between two adjacent ultrafilters, one end of the pressure control valve is located in the steady flow channel, the ultrafilter is arranged close to the partition plate, a main flow channel is arranged on the other side of the ultrafilter, and the main flow channel is communicated with all the steady flow channels.

2. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 1, characterized in that: one end of the pressure control valve is located in the water supplement cavity, and the other end is located in the steady flow channel, at least one pressure control valve is arranged in each steady flow channel, when the pressure of the main water purification cavity is less than the pressure of the water supplement cavity, the pressure control valve is opened, and the water supplement cavity is communicated with the steady flow channel.

3. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 1, characterized in that: the liquid level of the water supplement cavity is higher than that of the main water purification cavity.

4. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 1, characterized in that: a water inlet pipe is arranged on the side wall of the main water purification cavity, a water inlet valve is arranged on the water inlet pipe, a water supplement pipe is arranged on the side wall of the water supplement cavity, a water outlet pipe is arranged at the water outlet end of the ultrafilter, and the water outlet end of each ultrafilter core is communicated with the water outlet pipe.

5. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 4, characterized in that: a backwashing pipe is further arranged in the steady flow channel, a plurality of washing holes are arranged on the backwashing pipe, the washing holes are arranged towards the two sides of the ultrafilter, one end of the backwashing pipe is connected with the water outlet pipe, the other end is fixed and sealed with the bottom of the main water purification cavity, and a washing valve is arranged on the backwashing pipe.

6. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 4, characterized in that: a negative pressure water purification tank is further arranged, the water outlet end of the water outlet pipe is communicated with the negative pressure water purification tank, and a water outlet valve is arranged at the connection between the negative pressure water purification tank and the water outlet pipe, the water outlet valve is opened during normal water purification, and the water outlet valve is closed during backwashing.

7. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 6, characterized in that: a high-pressure air tank is further arranged, the air outlet end of the high-pressure air tank is connected to the side wall of the water outlet pipe, and the air outlet end of the high-pressure air tank is provided with an air outlet valve, the air outlet valve is closed during normal water purification, and the air outlet valve is opened during backwashing.

8. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purification device according to claim 1, characterized in that: ​ The pressure control valve comprises a communication pipe, one end of the communication pipe is provided with a contraction part, and the other end of the communication pipe is provided with a water outlet part, and the diameter of the water outlet part is larger than that of the contraction part.

9. The flow channel optimization system of the high-efficiency ultrafiltration membrane water purifier device according to claim 8, wherein: The water outlet part is provided with a compression spring and a sealing plug, one end of the compression spring is fixedly connected with the water outlet part, the other end is fixedly connected with the sealing plug, the sealing plug is slidingly connected in the water outlet part, and the sealing plug blocks the contraction part in an initial state.

10. The flow channel optimization system for a high-efficiency ultrafiltration membrane water purifier device of claim 9, wherein: An end cap is arranged at the end of the water outlet part, one end of the compression spring is fixedly connected with the end cap, a plurality of long slits are arranged on the side wall of the water outlet part, when the pressure of the main water purifying cavity is less than that of the water supplementing cavity, the sealing plug moves towards the end cap, and water enters the main water purifying cavity from the long slits.

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