A detachable hollow fiber membrane module

Abstract

The present invention relates to a detachable hollow fiber membrane assembly, comprising a solution box, a hollow fiber membrane bundle, a first joint, a shell and a second joint; there are two solution boxes, which are respectively located on the outside of the two ends of the hollow fiber membrane bundle opposite to each other; cold water or liquid desiccant is filled in the solution box; the first joint is fixed on the solution box and corresponds to the position of the end of the bundle; the two ends of the hollow fiber membrane bundle are respectively fixed in different shells; the two ends of the second joint are respectively threadedly connected to the first joint and the shell to realize detachable connection between the bundle and the solution box. The beneficial effects of the present invention are: the hollow fiber membrane bundle is detachably fixed between the two solution boxes through the first joint and the second joint, so that it can be disassembled and assembled at any time, and at the same time, the solution placed in the hollow fiber membrane bundle can more fully exchange heat and mass with the air in the air duct.

Description

Technical Field

[0001] The invention relates to a hollow fiber membrane component, in particular to a detachable hollow fiber membrane component. Background Art

[0002] A person's life has People spend a lot of time indoors, so they are paying more and more attention to the indoor air environment. At first, people only paid attention to the temperature parameters in the air environment, but humidity, like temperature, also plays an important role in human comfort and health. An air environment with too high or too low humidity will also accelerate the release of chemicals (formaldehyde and ozone) from indoor building materials, and accelerate the growth and reproduction of microorganisms such as viruses, fungi and bacteria, and these chemicals will seriously affect our health. The World Health Organization has detailed the standards for healthy homes, which include specific numerical ranges for indoor temperature and humidity, and stipulates that "indoor humidity should be maintained at The relative humidity of indoor air is When the indoor comfort level is high, the indoor occupants’ satisfaction is the highest.

[0003] With the advancement of my country's urbanization process, the building area has increased rapidly. According to statistics from the Ministry of Housing and Urban-Rural Development, in 2016, the per capita housing construction area in my country's urban areas reached more than 33 square meters. The total energy consumption of building operations was converted into 906 million tons of standard coal, accounting for about 20% of the country's energy consumption. HVAC energy consumption accounted for 10% of the total building energy consumption. , and this proportion will increase with the advancement of urbanization. According to statistics, the annual energy consumption of air conditioning per square meter of building is as high as , of which the proportion used for air dehumidification accounts for about.

[0004] The most widely used humidity control method is refrigeration dehumidification. Surface coolers cool humid air to below its dew point, thereby reducing its moisture content. However, to maintain a comfortable air temperature, the dehumidified air must be heated. This cooling-then-heating approach results in significant energy waste. Furthermore, a humid environment fosters the growth of pathogens, which can enter indoor spaces through airflow and severely deteriorate indoor air quality.

[0005] The existing hollow fiber membrane tubes and their regularly arranged membrane components have the following disadvantages during the manufacturing process: (1) For example, the hollow fiber membrane tube bundle disclosed in the Chinese invention patent application publication No. CN107126843A is too dense and easy to cause adhesion, and the air cannot fully transfer heat and mass with the membrane, which reduces the heat and mass exchange efficiency; (2) For example, the membrane component disclosed in the Chinese invention patent application publication No. CN107126843A uses a sealing plate to fix the hollow fiber membrane component sealing plate. When a tube bundle leaks, it is impossible to replace the leaking membrane tube bundle. The entire membrane component needs to be replaced, resulting in material waste and difficulty in operation. (3) For example, the curved hollow fiber membrane dehumidifier disclosed in the Chinese invention patent application publication No. CN107014001A is time-consuming to manufacture, difficult to prepare on a large scale, and not convenient for industrialization, which makes it difficult to meet actual needs and limits the application of membrane components. Summary of the Invention

[0006] To sum up, in order to overcome the shortcomings of the prior art such as uneven air flow field distribution, inability to disassemble and replace, low plasticity, difficulty in large-scale preparation, and inconvenience in industrialization, the technical problem to be solved by the present invention is to provide a detachable hollow fiber membrane assembly.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a detachable hollow fiber membrane assembly, comprising a solution tank, a hollow fiber membrane tube bundle, a first joint, a shell and a second joint; there are two solution tanks, which are located on the outside of the two ends of the hollow fiber membrane tube bundle respectively; cold water or liquid desiccant is filled in the solution tank; the first joint is fixed on the solution tank and corresponds to the position of the tube bundle end; the two ends of the hollow fiber membrane tube bundle are respectively fixed in different shells; the two ends of the second joint are respectively threadedly connected to the first joint and the shell to realize the detachable connection between the tube bundle and the solution tank.

[0008] The beneficial effects of the present invention are: the hollow fiber membrane tube bundle is detachably fixed between the two solution tanks through the first joint and the second joint, and can be disassembled and assembled at any time. At the same time, the solution placed in the hollow fiber membrane tube bundle can more fully exchange heat and mass with the air in the air duct.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows:

[0010] Furthermore, an internal thread is provided on the inner side wall of the first joint, and an external thread is provided on the outer side wall of the shell; an external thread that matches the first joint is provided on the outer side wall of one end of the second joint, and an internal thread that matches the shell is provided on the inner side wall of the other end; the two ends of the second joint are respectively threadedly connected to the first joint and the shell to achieve detachable connection between the tube bundle and the solution tank.

[0011] Furthermore, a polygonal disc for rotating the corresponding joint is provided on the first joint and the second joint respectively, and a sealing ring is provided between the first joint and the corresponding inner wall of the solution tank and between the second joint and the corresponding outer wall of the solution tank.

[0012] The beneficial effect of adopting the above further solution is that the hollow fiber membrane bundle can be detachably fixed between the two solution tanks and the sealing of the connection is ensured.

[0013] Furthermore, it includes a third joint, a fourth joint, a connecting pipe, a valve and a support plate, wherein the third joint is threadedly connected to the first joint, the fourth joint is threadedly connected to the second joint, and both ends of the connecting pipe are threadedly connected to the third joint and the fourth joint respectively;

[0014] The valve is arranged on the connecting pipe and is used to connect or disconnect the connecting pipe. The support plate is fixed at the position where the second joint and the fourth joint are connected and plays a supporting role.

[0015] Furthermore, polygonal disks for rotating the corresponding joints are respectively provided on the first joint, the second joint, the third joint and the fourth joint, and sealing rings are provided between the first joint and the corresponding inner wall of the solution tank, between the third joint and the corresponding outer wall of the solution tank, between the fourth joint and the support plate, and between the second joint and the support plate.

[0016] The beneficial effect of adopting the above further solution is: meeting the use requirements in different places, and the solution flowing to the hollow fiber membrane bundle can be blocked by closing the valve, so that the hollow fiber membrane bundle can be replaced.

[0017] Furthermore, a water inlet pipe for inputting cold water or liquid desiccant is provided at the bottom of one of the solution tanks corresponding to below the first joint, and a water outlet pipe for discharging the cold water or liquid desiccant after passing through the hollow fiber membrane tube bundle is provided at the bottom of the other solution tank corresponding to below the first joint; an overflow plate is vertically provided at a position corresponding to one side of the first joint in the two solution tanks, and the height of the overflow plate is greater than the height of the first joint, and the excess cold water or liquid desiccant in the corresponding solution tank is directed to the side of the overflow plate away from the first joint; a return pipe is also provided at a position at the bottom of the solution tank corresponding to the side of the overflow plate away from the first joint, and the diameter of the return pipe is greater than the diameters of the water inlet pipe and the water outlet pipe to discharge the excess cold water or liquid desiccant in the corresponding solution tank.

[0018] The beneficial effect of adopting the above further solution is to prevent excessive overflow of cold water or liquid desiccant in the solution tank.

[0019] Furthermore, a plurality of hollow fiber membrane tube bundles are provided and are spaced apart and arranged between the two solution tanks.

[0020] Furthermore, the plurality of hollow fiber membrane tube bundles are arranged in upper and lower layers between the two solution tanks, a partition is fixed between the two adjacent layers of the hollow fiber membrane tube bundles on the two solution tanks, and a guide plate is provided above the uppermost layer of the hollow fiber membrane tube bundle and below the lowermost layer of the hollow fiber membrane tube bundle on the two solution tanks.

[0021] Furthermore, the hollow fiber membrane tube bundle includes support bars, hollow fiber membrane tubes and fixed plates; a plurality of support bars are provided, which are evenly distributed in an annular manner between the two shells, and the two ends of each support bar are respectively fixedly connected to the corresponding positions near the edges of the two shells; a plurality of hollow fiber membrane tubes are evenly located in the cavity surrounded by all the support bars, and the two ends of each hollow fiber membrane tube are respectively fixed at corresponding positions in the two shells, and a preset gap is left between adjacent hollow fiber membrane tubes;

[0022] The fixed plate is located in the middle of the cavity surrounded by all the support bars, and is provided with through holes corresponding to the hollow fiber membrane tubes one by one. Each hollow fiber membrane tube passes through the corresponding through hole to ensure that a preset gap is left between adjacent hollow fiber membrane tubes.

[0023] The fiber membrane of the hollow fiber membrane tube serves as a semi-indirect contact medium. A high-concentration lithium chloride solution passes through the inner tube of the hollow fiber membrane tube and cross-flows with the air outside the membrane wall. The membrane only allows water vapor to pass through. Driven by the water vapor partial pressure difference, it can effectively absorb moisture from humid air while strictly preventing the solution from leaking in liquid form and contaminating the air. Hollow fiber membrane tubes can be used in dehumidified air, humidified air, seawater desalination, purification, and distillation systems. The corresponding solution passes through the inner tube of the hollow fiber membrane tube and cross-flows with the air outside the membrane wall. Hollow fiber membranes have the characteristic of high selective permeability. Water vapor molecules can pass through the porous membrane wall of the hollow fiber membrane. Water vapor can pass through the membrane, while salt molecules and liquid water cannot. For example, Chinese invention patent No. 201010286229.8 discloses a highly selective asymmetric moisture-permeable membrane, its preparation method, and application.

[0024] The beneficial effect of adopting the above further solution is: limiting the air from blowing through between the hollow fiber membrane tubes, thereby increasing the contact area between the air and the hollow fiber membrane tube bundle.

[0025] Furthermore, glue is filled into the shell to fix and seal the end of the hollow fiber membrane tube.

[0026] The beneficial effect of adopting the above further solution is that the end of the hollow fiber membrane tube is fixed in the shell and the end of the hollow fiber membrane tube is sealed at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of the present invention (removing the plate on the top of the solution tank);

[0028] Figure 2 for Figure 1 A top view of

[0029] Figure 3 It is a three-dimensional diagram of the hollow fiber membrane bundle;

[0030] Figure 4 for Figure 3 AA section view;

[0031] Figure 5 for Figure 4 C enlarged view;

[0032] Figure 6 for Figure 3 BB cross-sectional view;

[0033] Figure 7 It is a three-dimensional image of the hollow fiber membrane bundle after removing the hollow fiber membrane tube;

[0034] Figure 8 This is a three-dimensional diagram of the second embodiment of the present invention.

[0035] Among them, a is the air inlet and b is the air outlet.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 1. Solution tank, 2. First joint, 3. Shell, 4. Second joint, 5. Sealing ring, 6. Third joint, 7. Fourth joint, 8. Connecting pipe, 9. Valve, 10. Support plate, 11. Water inlet pipe, 12. Water outlet pipe, 13. Overflow plate, 14. Return pipe, 15. Partition, 16. Guide plate, 17. Support bar, 18. Hollow fiber membrane tube, 19. Fixed plate. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] Example 1

[0040] like Figure 1 and 2 As shown, a detachable hollow fiber membrane assembly includes a solution tank 1, a hollow fiber membrane bundle, a first joint 2, a shell 3 and a second joint 4. There are two solution tanks 1, which are located on the outside of the two ends of the hollow fiber membrane bundle. Cold water or liquid desiccant is filled in the solution tank 1. The first joint 2 is fixed on the solution tank 1 and corresponds to the position of the end of the bundle. The two ends of the hollow fiber membrane bundle are respectively fixed in different shells 3. The two ends of the second joint 4 are respectively threadedly connected to the first joint 2 and the shell 3 to achieve detachable connection between the bundle and the solution tank 1.

[0041] The inner wall of the first joint 2 is provided with an internal thread, and the outer wall of the shell 3 is provided with an external thread. The outer wall of one end of the second joint 4 is provided with an external thread that matches the first joint 2, and the inner wall of the other end is provided with an internal thread that matches the shell 3. The two ends of the second joint 4 are respectively threadedly connected to the first joint 2 and the shell 3 to achieve detachable connection between the tube bundle and the solution tank 1. The first joint 2 and the second joint 4 are respectively provided with polygonal discs for rotating the corresponding joints. The hollow fiber membrane tube bundle can be spliced ​​and disassembled by rotating the polygonal discs to replace the leaking hollow fiber membrane tube bundle. At the same time, it also better prevents solution leakage. A sealing ring 5 is provided between the first joint 2 and the corresponding inner wall of the solution tank 1, and between the second joint 4 and the corresponding outer wall of the solution tank 1.

[0042] An inlet pipe 11 for inputting cold water or liquid desiccant is provided at the bottom of one of the solution tanks 1, corresponding to below the first joint 2. An outlet pipe 12 for discharging the cold water or liquid desiccant after passing through the hollow fiber membrane bundle is provided at the bottom of the other solution tank 1, corresponding to below the first joint 2. An overflow plate 13 is vertically provided at a position corresponding to one side of the first joint 2 in both solution tanks 1. The overflow plate 13 is higher than the height of the first joint 2 and directs excess cold water or liquid desiccant in the corresponding solution tank 1 to the side of the overflow plate 13 away from the first joint 2. A return pipe 13 is also provided at a position at the bottom of the solution tank 1, corresponding to the side of the overflow plate 13 away from the first joint 2. The diameter of the return pipe 13 is larger than the diameters of the inlet pipe 11 and the outlet pipe 12 to discharge excess cold water or liquid desiccant in the corresponding solution tank 1. Through this design, the cold water or liquid desiccant in solution tank 1 can effectively flow through the hollow fiber membrane bundle, ensuring that the hollow fiber membrane bundle is filled with cold water or liquid desiccant, thereby improving heat and mass exchange with other substances such as air. Furthermore, the diameter of return pipe 13 is larger than that of water inlet pipe 11 and water outlet pipe 12, ensuring that any excess cold water or liquid desiccant in solution tank 1 is promptly drained and returned to the solution source, preventing leakage from solution tank 1.

[0043] There are multiple hollow fiber membrane bundles, which are arranged at intervals between the two solution tanks 1. When the number of hollow fiber membrane bundles N ≥ 3, they are arranged in a triangle or cube at equal intervals. The number of hollow fiber membrane bundles can be selected according to the different processing volumes. The multiple hollow fiber membrane bundles are arranged in layers between the two solution tanks 1, and partitions 15 are fixed between the two adjacent layers of hollow fiber membrane bundles on the two solution tanks 1, and guide plates 16 are provided above the uppermost layer of the hollow fiber membrane bundle and below the lowermost layer of the hollow fiber membrane bundle on the two solution tanks 1. As Figure 3-7As shown, the hollow fiber membrane tube bundle includes support bars 17, hollow fiber membrane tubes 18 and fixed plates 19. There are multiple support bars 17, which are evenly distributed in a ring between the two shells 3. The two ends of each support bar 17 are fixedly connected to the corresponding positions near the edges of the two shells 3. There are several hollow fiber membrane tubes 18, which are evenly located in the cavity surrounded by all the support bars 17. The two ends of each hollow fiber membrane tube 18 are fixed at corresponding positions in the two shells 3, and a preset gap is left between adjacent hollow fiber membrane tubes 18. Glue is poured into the shell 3 to fix and seal the ends of the hollow fiber membrane tubes 18. The glue can be epoxy ultrafiltration water-treated hard glue. Since the hollow fiber membrane tube 18 is stretched toward the middle by capillary force when cold water or liquid desiccant is introduced, an internal thread or a protrusion is provided on the inner wall of the shell 3 to increase the contact area between the epoxy ultrafiltration water treatment hard glue and the shell 3, thereby improving the fixation of the epoxy ultrafiltration water treatment hard glue to the hollow fiber membrane tube 18 and preventing the hollow fiber membrane tube 18 from degumming, thereby preventing the cold water or liquid desiccant inside the hollow fiber membrane tube 18 from leaking from the end.

[0044] like Figure 6 As shown, the fixed plate 19 is located in the middle of the cavity surrounded by all the support bars 17, and is provided with through holes corresponding to the hollow fiber membrane tubes 18 one by one. Each of the hollow fiber membrane tubes 18 passes through the corresponding through hole to ensure that a preset gap is left between adjacent hollow fiber membrane tubes 18.

[0045] The hollow fiber membrane module can be used in air dehumidification, regenerator, air heating and humidification, seawater desalination, wastewater purification or air evaporative cooling and other fields, as follows:

[0046] When used for air dehumidification, the system acts as both a dehumidifier and a solution regenerator. When used as a dehumidifier, a relatively high concentration of LiCl, LiBr, and / or CaCl₂ solution can be introduced into one of the solution tanks 1 through the water inlet pipe 11. From there, the solution tank 1 passes through the hollow fiber membrane tubes 18 and into the other solution tank 1. These solutions, acting as dehumidifiers, are hygroscopic. After passing through the air inlet a, the moist air passes through the outer surface of the hollow fiber membrane tubes 18. Due to the water vapor partial pressure difference between the inside and outside of the hollow fiber membrane tubes 18, the moist air water vapor partial pressure is greater than the water vapor partial pressure of the solution within the hollow fiber membrane tubes 18. This pressure difference propels the moist air water vapor into the membranes, i.e., the hollow fiber membrane tubes 18, achieving the desired air dehumidification effect. The dehumidified air is discharged through the air outlet b for use.

[0047] When used as a regenerator, the LiCl solution, LiBr solution and / or CaCl2 solution that has absorbed the diluted wet air is heated and flows through the hollow fiber membrane tube 18. The regenerated air after passing through the dehumidifier passes through the outer surface of the hollow fiber membrane tube 18. There is also a water vapor partial pressure difference between the inside and outside of the hollow fiber membrane tube 18. The water vapor partial pressure of the regenerated air is less than the water vapor partial pressure of the solution in the hollow fiber membrane tube 18. The pressure difference can push the solution water vapor to penetrate outside the membrane, that is, outside the hollow fiber membrane tube 18. After drying and regeneration, the concentrated solution is obtained and flows out from the water outlet pipe 12. The humidified air is discharged through the outlet fan for utilization.

[0048] When used for air heating and humidification, it functions as a heating humidifier. Hot water flows through the hollow fiber membrane tubes 18, cross-flowing into the air outside the membrane walls / hollow fiber membrane tubes 18. The hollow fiber membranes of the hollow fiber membrane tubes 18 have high selective permeability. Water within the membranes / hollow fiber membrane tubes 18 evaporates and turns into water vapor. As the water vapor molecules pass through the porous membrane walls, this prevents the water from leaking out as liquid. The water vapor that penetrates the membrane walls forms a thin film of water vapor on the outside of the membrane walls, which is nearly saturated with water vapor within the membrane. This creates a humidity difference with the dry air passing over the membranes. As the water vapor in the film diffuses into the dry air, the evaporated water vapor within the membrane replenishes the water vapor film outside the membrane. Simultaneously, driven by the temperature gradient, the water within the membrane is transferred by convection from the inner surface of the membrane to the outer surface, and then to the supply air, increasing the supply air temperature and reducing the water temperature within the membrane. Water and air pass through the membrane in a cross-flow pattern, and heat and mass transfer occurs simultaneously, thereby obtaining heated and humidified air.

[0049] When used in seawater desalination or wastewater purification, it is used as a membrane humidifier to humidify the air. The heated seawater solution or wastewater passes through the hollow fiber membrane tube. Other principles are the same as above. The heated and humidified air is discharged from the air outlet and enters the next step of treatment.

[0050] When used for evaporative cooling of air, it functions as an evaporative cooler in an evaporative cooling system. The evaporative cooling principle of the hollow fiber membrane tube 18 is as follows: water passes through the tube 18 and cross-flows with the air outside the membrane wall / hollow fiber membrane tube 18. The hollow fiber membrane tube 18 has high selective permeability. The water within the membrane / hollow fiber membrane tube 18 absorbs sensible heat from the air and evaporates into water vapor. As the water vapor molecules pass through the membrane wall of the hollow fiber membrane tube 18, they also prevent the water from leaking out as a liquid. The water vapor that penetrates the membrane wall forms a thin film of water vapor on the outside of the membrane wall. This film of water vapor continues to absorb sensible heat from the air and turns into water vapor, thereby lowering the air temperature. While the water vapor in the film diffuses into the dry air, the evaporated water vapor within the membrane replenishes the water vapor film outside the membrane. Simultaneously, driven by the temperature gradient, the water within the membrane is transferred by convection from the inner surface of the membrane to the outer surface of the membrane, and then to the supply air, lowering the supply air temperature and raising the temperature of the water within the membrane. Water and air pass through the membrane in a cross-flow pattern, and heat and mass transfer occurs simultaneously.

[0051] Example 2

[0052] like Figure 8 As shown, a third joint 6, a fourth joint 7, a connecting pipe 8, a valve 9, and a support plate 10 are added. The third joint 6 is threadedly connected to the first joint 2, the fourth joint 7 is threadedly connected to the second joint 4, and the ends of the connecting pipe 8 are respectively threadedly connected to the third joint 6 and the fourth joint 7. The valve 9 is provided on the connecting pipe 8 and is used to connect or disconnect the connecting pipe 8. The support plate 10 is fixed at the connection point between the second joint 4 and the fourth joint 7 and provides support. The first joint 2, the second joint 4, the third joint 6, and the fourth joint 7 are each provided with a polygonal disk for rotating the corresponding joint. A sealing ring 5 is provided between the first joint 2 and the corresponding inner wall of the solution tank 1, between the third joint 6 and the corresponding outer wall of the solution tank 1, between the fourth joint 7 and the support plate 10, and between the second joint 4 and the support plate 10. The other structures are consistent with the embodiment.

[0053] Through the connecting pipe 8, the solution tank 1 and the hollow fiber membrane bundle at different distances can be detachably connected according to actual conditions, so that the solution tank 1 can be separated from the hollow fiber membrane bundle, so that the solution tank 1 and the hollow fiber membrane bundle are in different horizontal positions or height positions, meeting the use requirements in different places. At the same time, the connecting pipe 8 is provided with a valve 9. When the hollow fiber membrane bundle needs to be replaced, the solution flowing to the hollow fiber membrane bundle can be blocked by closing the valve 9, so that the hollow fiber membrane bundle can be replaced.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detachable hollow fiber membrane assembly, characterized in that: The invention comprises a solution box (1), a hollow fiber membrane tube bundle, a first joint (2), a shell (3) and a second joint (4); the solution box (1) has two parts, which are located opposite to each other on the outside of the two ends of the hollow fiber membrane tube bundle; the solution box (1) is filled with cold water or a liquid desiccant; the first joint (2) is fixed on the solution box (1) at a position corresponding to the end of the tube bundle; the two ends of the hollow fiber membrane tube bundle are respectively fixed in different shells (3); the two ends of the second joint (4) are respectively threadedly connected to the first joint (2) and the shell (3) to realize detachable connection between the tube bundle and the solution box (1); The first joint (2) has an inner wall provided with an internal thread, and the outer wall of the shell (3) has an outer thread; the outer wall of one end of the second joint (4) has an outer thread matching the first joint (2), and the inner wall of the other end of the second joint (4) has an inner thread matching the shell (3); the two ends of the second joint (4) are respectively threadedly connected to the first joint (2) and the shell (3) to achieve detachable communication between the tube bundle and the solution tank (1); The hollow fiber membrane tube bundle is provided in plurality and is arranged at intervals between the two solution tanks (1); The hollow fiber membrane tube bundle comprises a support bar (17), a hollow fiber membrane tube (18) and a fixing plate (19); a plurality of the support bars (17) are provided, and are evenly distributed in a ring shape between the two shells (3), and the two ends of each of the support bars (17) are respectively fixedly connected to corresponding positions near the edges of the two shells (3); a plurality of the hollow fiber membrane tubes (18) are evenly located in a cavity surrounded by all the support bars (17), and the two ends of each of the hollow fiber membrane tubes (18) are respectively fixed to corresponding positions in the two shells (3), and a preset gap is left between adjacent hollow fiber membrane tubes (18); The fixing plate (19) is located in the middle of the cavity surrounded by all the support bars (17), and is provided with through holes corresponding to the hollow fiber membrane tubes (18) one by one. Each of the hollow fiber membrane tubes (18) passes through the corresponding through hole to ensure that a preset gap is left between adjacent hollow fiber membrane tubes (18).

2. The detachable hollow fiber membrane assembly according to claim 1, characterized in that: A polygonal disc for rotating the corresponding joint is provided on the first joint (2) and the second joint (4), respectively. A sealing ring (5) is provided between the first joint (2) and the corresponding inner wall of the solution tank (1), and between the second joint (4) and the corresponding outer wall of the solution tank (1).

3. The detachable hollow fiber membrane assembly according to claim 1, characterized in that: It also comprises a third joint (6), a fourth joint (7), a connecting pipe (8), a valve (9) and a supporting plate (10), wherein the third joint (6) is threadedly connected to the first joint (2), the fourth joint (7) is threadedly connected to the second joint (4), and both ends of the connecting pipe (8) are respectively threadedly connected to the third joint (6) and the fourth joint (7); The valve (9) is arranged on the connecting pipe (8) and is used to connect or disconnect the connecting pipe (8); the support plate (10) is fixed at the position where the second joint (4) and the fourth joint (7) are connected and plays a supporting role.

4. The detachable hollow fiber membrane assembly according to claim 3, characterized in that: A polygonal disc for rotating the corresponding joint is provided on the first joint (2), the second joint (4), the third joint (6) and the fourth joint (7), respectively. A sealing ring (5) is provided between the first joint (2) and the corresponding inner wall of the solution tank (1), between the third joint (6) and the corresponding outer wall of the solution tank (1), between the fourth joint (7) and the support plate (10), and between the second joint (4) and the support plate (10).

5. The detachable hollow fiber membrane assembly according to claim 1, characterized in that: A water inlet pipe (11) for inputting cold water or liquid desiccant is provided at the bottom of one of the solution boxes (1) corresponding to below the first joint (2), and a water outlet pipe (12) for discharging the cold water or liquid desiccant after passing through the hollow fiber membrane tube bundle is provided at the bottom of the other solution box (1) corresponding to below the first joint (2); an overflow plate (13) is vertically provided at a position corresponding to one side of the first joint (2) in the two solution boxes (1), and the height of the overflow plate (13) is greater than the height of the first joint (2), and the excess cold water or liquid desiccant in the corresponding solution box (1) is directed to the side of the overflow plate (13) away from the first joint (2); a return pipe (14) is also provided at a position at the bottom of the solution box (1) corresponding to the side of the overflow plate (13) away from the first joint (2), and the diameter of the return pipe (14) is greater than the diameters of the water inlet pipe (11) and the water outlet pipe (12), so as to discharge the excess cold water or liquid desiccant in the corresponding solution box (1).

6. The detachable hollow fiber membrane assembly according to claim 1, characterized in that: The plurality of hollow fiber membrane tube bundles are arranged in layers between the two solution boxes (1), a partition plate (15) is fixed between two adjacent layers of the hollow fiber membrane tube bundles on the two solution boxes (1), and guide plates (16) are provided above the uppermost layer of the hollow fiber membrane tube bundle and below the lowermost layer of the hollow fiber membrane tube bundle on the two solution boxes (1).

7. The detachable hollow fiber membrane assembly according to claim 1, characterized in that: The shell (3) is filled with glue for fixing and sealing the end of the hollow fiber membrane tube (18).

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