Micro-channel photosensitive low-pressure desorption air water taking device

Abstract

The invention discloses a micro-channel photosensitive low-pressure air analysis water taking device which comprises a solar heat collector, a photosensitive sensor, a solar power supply system, a PLC, a condenser, a dustproof fan, a water purifier and a water collecting tank. The solar heat collector comprises a sunlight reflector and an evacuated collector tube, the sunlight reflector is rotatably arranged and located below the evacuated collector tube, the evacuated collector tube is filled with a solid adsorbent, one end of the evacuated collector tube is provided with a dustproof fan, and the other end of the evacuated collector tube is connected with the condenser; a bottom outlet of the condenser is connected with the water purifier; an outlet of the water purifier is connected with the water collecting tank; the solar power supply system is used for providing a power supply and comprises a solar panel and a storage battery; the photosensitive sensor is connected with the PLC, and the PLC controls operation of the dustproof fan and rotation of the sunlight reflector and the solar panel. The problem of insufficient adsorption and desorption is solved, and the purpose of automatic, portable and efficient water taking is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of energy conservation and environmental protection, and specifically relates to a microchannel photosensitive low-pressure analytical air water extraction device. Background Art

[0002] Fresh water is a basic need for human survival. However, fresh water on land only accounts for 2.53% of the world's water, and fresh water resources directly available to humans only account for 0.26%. With the intensification of human activities and industrial pollution, fresh water resources are becoming increasingly scarce. Studies have shown that the atmosphere stores about 14,000 cubic kilometers of water, which can be called a huge "reservoir". Therefore, obtaining fresh water from the atmosphere is regarded as one of the effective ways to alleviate water shortages.

[0003] At present, air water extraction technologies mainly include steam compression, adsorption analysis, semiconductor refrigeration, etc. Among them, the adsorption analysis method uses the moisture absorption and release characteristics of the adsorbent to achieve water extraction in a low dew point environment. Moreover, the adsorption analysis method has good application prospects due to its safety and stability. In addition, by using solar energy or low-grade thermal energy to assist heating, the adsorbent can be regenerated, which is an efficient and environmentally friendly way to extract water from air.

[0004] For remote and backward areas with perennial drought, portable air-to-water devices that can work independently play an important role. As a clean energy source that can be obtained anywhere, solar energy is the best choice for achieving independent operation and lightweight of adsorption air-to-water systems.

[0005] Existing solar adsorption air water extraction technologies all use fixed solar collectors to complete the daytime decomposition of the adsorbent. When the light is insufficient, the decomposition effect of the adsorbent deteriorates, which ultimately affects the water extraction efficiency. For example, Chinese patent number: CN113605494A proposes a solar regeneration adsorption air water extraction device using silica sol solidified activated carbon fiber felt / lithium chloride + sodium acetate double salt as a solid adsorbent. The system has a short water extraction cycle and a considerable water output, but it also has the disadvantages of being bulky, requiring external power supply, and being affected by light, which is not conducive to use in backward, remote, and power-deficient areas.

[0006] With the rapid development of the field of adsorption materials, the efficiency of the adsorption air water extraction system has been significantly improved. Among them, the metal organic framework has extremely high adsorption performance, and its water absorption capacity is particularly outstanding in low humidity environments. The filling method of the adsorbent will also affect the adsorption capacity. For example, the fluid resistance of direct stacking filling is large, which will affect the air flow efficiency. For specific reference, please refer to Chinese patents CN216304790U, CN109594612B, and CN220939863U. Therefore, it is necessary to improve the structure of the adsorption bed, mainly by using a microchannel structure to reduce fluid resistance. Existing structures include: triangular, circular, honeycomb cross-sections, etc. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention proposes a microchannel photosensitivity low-pressure air analysis water extraction device.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is: a microchannel photosensitive low-pressure analytical air water extraction device, which includes: a solar collector, a photosensitive sensor, a solar power supply system, a PLC controller, a condenser, a dust-proof fan, a water purifier and a water collection tank;

[0009] The solar collector comprises a solar reflector and a vacuum heat collecting tube, wherein the solar reflector is rotatably arranged and is located below the vacuum heat collecting tube, the vacuum heat collecting tube is filled with a solid adsorbent, and a dustproof fan is installed at one end of the vacuum heat collecting tube to inhale air in the environment through the dustproof fan, and the other end of the vacuum heat collecting tube is connected to a condenser;

[0010] The bottom outlet of the condenser is connected to a water purifier, and the outlet of the water purifier is connected to a water collecting tank;

[0011] The solar power supply system is used to provide power, and includes solar panels and batteries;

[0012] The photosensitive sensor is connected to a PLC controller, and the PLC controller controls the operation of the dust-proof fan and the rotation of the solar reflector and the solar panel.

[0013] Furthermore, the solar collector, solar power supply system, PLC controller, condenser, water purifier and water collection tank are all integrated and installed on the cart, and a cart handle is provided on one side of the cart and cart rollers are provided on the bottom.

[0014] Furthermore, the solar reflector is fixed on the transmission shaft I, and the rotation of the transmission shaft I is controlled by a PLC controller.

[0015] Furthermore, the solar collector also includes a triangular bracket and an electric valve, wherein the triangular bracket is supported on the ground and connected to the transmission shaft I; the electric valve is installed at the air inlet end of the vacuum collector tube and is controlled by a PLC controller.

[0016] Furthermore, the vacuum heat collecting tube is connected to the vacuum pump via a vacuum pump conduit, and a temperature sensor and a pressure sensor are provided inside the vacuum heat collecting tube, and the temperature sensor and the pressure sensor are simultaneously connected to the PLC controller.

[0017] Furthermore, the solid adsorbent adopts the metal frame material UiO-66, and the specific structure is a corrugated microchannel formed by alternatingly stacking annular sheet adsorbents and annular corrugated adsorbents.

[0018] Furthermore, a dustproof ventilation hood is provided on the top of the condenser, and the condensed and dried air is discharged into the atmosphere through the condenser and the dustproof ventilation hood in sequence.

[0019] Furthermore, the photosensor is fixed on the top of the dustproof ventilation hood; and the condenser is a fin-tube condenser.

[0020] Furthermore, the solar panel is fixed on the transmission shaft II, the rotation of the transmission shaft II is controlled by the PLC controller, the electricity generated by the solar panel is stored in the battery, the battery and the PLC controller are both fixed in the centralized control box, and the battery supplies power to each power-consuming unit of the system.

[0021] Furthermore, the interior of the water purifier includes a sponge layer, a gravel layer, an activated carbon particle layer, an acrylic cotton layer and a gauze layer.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The main structure of the present invention includes a solar collector, a solar panel and a fin-tube condenser, and is equipped with a handle and rollers. It is portable and compact, has a simple structure and occupies a small area.

[0024] 2. The present invention utilizes solar power generation and solar thermal collection technology to achieve normal operation of the entire system without external power input. It is low-carbon and environmentally friendly and is suitable for use in remote and backward areas.

[0025] 3. The present invention adds a set of photosensitive control system, so that the solar panels and solar collectors can maintain the best lighting angle during the day, thereby improving the power generation and the decomposition effect of the adsorbent.

[0026] 4. The present invention uses a corrugated microchannel metal organic framework UiO-66 adsorbent, which has extremely high thermal and chemical stability and is suitable for perennially dry and hot areas. The porosity of UiO-66 is 1200–1600m 2 / g, the material itself has a strong adsorption capacity, and its water absorption capacity is 1.5-3.0 times that of silica sol. The corrugated micro-channel structure increases the specific surface area by 20% compared with the honeycomb structure, which can further improve the adsorption capacity.

[0027] 5. The present invention utilizes a vacuum pump to evacuate the interior of the vacuum collector tube before analysis, and adopts a low-pressure analysis method to reduce the evaporation temperature of water on the surface of the adsorption bed, thereby further improving the analysis effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 for Figure 1Schematic diagram of the structure of the solid adsorbent;

[0030] Figure 3 for Figure 1 Schematic diagram of the structure of a single fin tube in a medium fin tube condenser;

[0031] Figure 4 for Figure 1 Schematic diagram of the structure of the water purifier;

[0032] Figure 5 It is a schematic diagram of the working principle of the adsorption process of the present invention;

[0033] Figure 6 It is a schematic diagram of the working principle of the analysis process of the present invention.

[0034] The markings in the figure are: 1. Solar collector; 101. Triangular bracket; 102. Drive shaft I; 103. Dust-proof fan; 104. Electric valve; 105. Vacuum collector tube; 106. Solar reflector; 2. Fixed bracket; 3. Finned tube condenser; 301. Finned tube; 3011. Copper tube; 3012. Ring fin; 3013. Nut 3013; 4. Solar panel; 5. Drive shaft II; 6. Dust-proof ventilation hood; 601. Dust-proof ventilation hood outlet; 7. Photosensitive sensor ; 8. Water purifier; 801. Water purifier shell; 802. Sponge layer; 803. Gravel layer; 804. Activated carbon granule layer; 805. Acrylic cotton layer; 806. Gauze layer; 9. Water collecting tank; 10. PLC controller; 11. Collection box shell; 12. Battery; 13. Cart; 1301. Cart handle; 1302. Cart roller; 14. Solid adsorbent; 1401. Sheet adsorbent; 1402. Corrugated adsorbent; 15. Vacuum pump; 1501. Vacuum pump catheter. DETAILED DESCRIPTION

[0035] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 As shown, a microchannel photosensitivity low-pressure analysis air water extraction device comprises: a solar collector 1, a photosensor 7, a solar power supply system, a PLC controller 10, a fin-tube condenser 3, a dust-proof fan 104, a water purifier 8 and a water collection tank 9.

[0037] The solar collector 1 includes a solar reflector 106 and a vacuum collector tube 105, wherein the solar reflector 106 is rotatable and located below the vacuum collector tube 105, the vacuum collector tube 105 is filled with a solid adsorbent 14, and a dust-proof fan 103 is installed at one end of the vacuum collector tube 105, and air in the environment is sucked in through the dust-proof fan 103, and the other end of the vacuum collector tube 105 is connected to the condenser 3; the bottom outlet of the condenser 3 is connected to the water purifier 8, and the outlet of the water purifier 8 is connected to the water collection tank 9; the solar power supply system is used to provide power, which includes a solar panel 4 and a battery 12; the photosensor 7 is connected to the PLC controller 10, and the PLC controller 10 controls the operation of the dust-proof fan 103 and the rotation of the solar reflector 106 and the solar panel 105.

[0038] The solar collector 1, solar power supply system, PLC controller 10, condenser 3, water purifier 8 and water collection tank 9 are all integrated and installed on the cart 13. A cart handle 1301 is set on one side of the cart 13 and a cart roller 1302 is set on the bottom.

[0039] The solar reflector 106 is fixed on the transmission shaft I 102 , and the solar panel 4 is fixed on the transmission shaft II 5 . The rotation of the transmission shaft I 102 and the transmission shaft II 5 is controlled by the PLC controller 10 .

[0040] The air inlet end of the vacuum heat collecting tube 105 is provided with an electric valve 104, and the opening and closing of the electric valve 104 is controlled by the PLC controller 10. The vacuum heat collecting tube 105 is connected to the vacuum pump 15 through the vacuum pump conduit 1501, and a temperature sensor and a pressure sensor are provided inside the vacuum heat collecting tube, and the temperature sensor and the pressure sensor are connected to the PLC controller 10 at the same time.

[0041] A dustproof ventilation hood 6 is provided on the top of the condenser 3, and the condensed and dried air is discharged into the atmosphere through the condenser 3 and the dustproof ventilation hood 6 in sequence.

[0042] The photosensitive sensor 7 is fixed on the top of the dustproof ventilation cover 6. The photosensitive sensor 7 is coupled with the PLC controller 10 to control the illumination angle of the solar panel 4 and the solar thermal collector 1, thereby increasing the power generation and promoting the analysis process.

[0043] like Figure 2 As shown, the solid adsorbent material is UiO-66, which is easy to process. The specific structure is a corrugated microchannel formed by alternating annular sheet adsorbents and annular corrugated adsorbents, which can effectively increase the specific surface area of ​​the channel and thus improve the adsorption capacity.

[0044] like Figure 3 As shown, the single fin tube structure in the fin-tube condenser includes: a copper tube 3011, an annular fin 3012, and a nut 3013.

[0045] like Figure 4 As shown, the internal structure of the water purifier 8 includes: a sponge layer 802, a gravel layer 803, an activated carbon particle layer 804, an acrylic cotton layer 805, and a gauze layer 806, which play a role in purifying water quality by physical methods.

[0046] The working principle of the present invention includes:

[0047] At night, the adsorption process is as follows: the electric valve 104 at the end of the vacuum heat collecting tube 105 is automatically opened by the PLC controller 10, and air is sucked into the adsorbent bed by the dust-proof fan 103. The water vapor in the air is absorbed by the adsorbent, and the relatively dry air is discharged into the atmosphere through the finned tube condenser 3 and the dust-proof ventilation hood 6. The PLC controller and the moving parts of the system are powered by the battery 12.

[0048] During the day, the analysis process is as follows: the valve and dust-proof fan are automatically closed by the PLC controller 10, and the vacuum pump 15 is turned on to evacuate the inside of the vacuum collector tube. The vacuum collector tube 105 absorbs solar heat from the solar reflector 106, and the absorbent undergoes the analysis process and regenerates. The analyzed hot and humid air enters the condenser 3 through natural convection, and the water vapor condenses into water under the condition of natural wind cooling. Under the action of gravity, the condensed water enters the bottom of the condenser and the water purifier 8 in turn, and is finally collected in the water collection tank 9, while the saturated air is directly discharged from the dust-proof ventilation hood 601 at the top of the condenser. In order to improve the water extraction efficiency and reduce the operating cost, the device is added with solar panels 4, transmission shaft I 102, transmission shaft II 5, and photosensor 7. Solar power generation is used for power supply, and the photosensor 7 is used to feed back the optimal incident angle of sunlight to the PLC controller 10 to control the transmission shaft I 102 and the transmission shaft II 5 to adjust the illumination angle of the solar collector 4 and the solar reflector 106, thereby improving the power generation and analysis efficiency. .

[0049] Control theory: By coupling the photosensitive sensor with the PLC controller, the illumination angle of the solar panels and solar thermal collectors is controlled to increase power generation and promote the analysis process. Part of the electricity is stored in the battery for backup, and the other part is used to supply the PLC controller, transmission shaft, dust-proof fan and other electronic equipment.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the protection scope of the present invention in any form, and all technical solutions obtained by equivalent replacement and the like fall within the protection scope of the present invention. The parts not involved in the present invention are the same as the prior art or can be implemented by the prior art.

Claims

1. A microchannel photosensitive low-pressure air analysis water extraction device, characterized in that: include: Solar collector, photosensor, solar power supply system, PLC controller, condenser, dust-proof fan, water purifier and water collection tank; The solar collector comprises a solar reflector and a vacuum heat collecting tube, wherein the solar reflector is rotatably arranged and is located below the vacuum heat collecting tube, the vacuum heat collecting tube is filled with a solid adsorbent, and a dustproof fan is installed at one end of the vacuum heat collecting tube to inhale air in the environment through the dustproof fan, and the other end of the vacuum heat collecting tube is connected to a condenser; The bottom outlet of the condenser is connected to a water purifier, and the outlet of the water purifier is connected to a water collecting tank; The solar power supply system is used to provide power, and includes solar panels and batteries; The photosensitive sensor is connected to a PLC controller, and the PLC controller controls the operation of the dust-proof fan and the rotation of the solar reflector and the solar panel.

2. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The solar thermal collector, solar power supply system, PLC controller, condenser, water purifier and water collection tank are all integrated and installed on the cart. A cart handle is arranged on one side of the cart and cart rollers are arranged on the bottom.

3. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The solar reflector is fixed on the transmission shaft I, and the rotation of the transmission shaft I is controlled by a PLC controller.

4. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The solar collector also includes a triangular support and an electric valve. The triangular support is supported on the ground and connected to the transmission shaft I. The electric valve is installed at the air inlet end of the vacuum collector tube and is controlled by a PLC controller.

5. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The vacuum heat collecting tube is connected to the vacuum pump through a vacuum pump conduit, and a temperature sensor and a pressure sensor are arranged inside the vacuum heat collecting tube, and the temperature sensor and the pressure sensor are connected to the PLC controller at the same time.

6. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The solid adsorbent is made of UiO-66, a metal frame material, and has a specific structure of a corrugated microchannel formed by alternately stacking annular sheet adsorbents and annular corrugated adsorbents.

7. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: A dustproof ventilation hood is arranged on the top of the condenser, and the condensed and dried air is discharged into the atmosphere through the condenser and the dustproof ventilation hood in sequence.

8. A microchannel photosensitive low-pressure air analysis water extraction device according to claim 7, characterized in that: The photosensitive sensor is fixed on the top of the dustproof ventilation hood; the condenser adopts a finned tube condenser.

9. The microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The solar panel is fixed on the transmission shaft II, the rotation of the transmission shaft II is controlled by the PLC controller, the electricity generated by the solar panel is stored in the battery, the battery and the PLC controller are both fixed in the centralized control box, and the battery supplies power to each power-consuming unit of the system.

10. The microchannel photosensitive low-pressure air analysis water extraction device according to claim 1, characterized in that: The interior of the water purifier comprises a sponge layer, a gravel layer, an activated carbon particle layer, an acrylic cotton layer and a gauze layer.

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