Rotating wheel type wind-light coupling interface evaporator

Abstract

The utility model discloses a rotating wheel type wind-light coupling interface evaporator, and relates to the technical field of evaporators. According to the technical scheme, the device comprises a rotating shaft, the rotating shaft is installed on a support and driven by a motor to rotate, a plurality of sheets are arranged on the rotating shaft, solar heat absorption coatings are arranged on the two side faces of each sheet, a saline water spraying device is arranged on one side of each sheet or a saline water pool is arranged below each sheet, and part of the sheets are immersed in saline water. According to the rotating wheel type wind-light coupling interface evaporator, on one hand, the area of an evaporation interface is effectively increased, on the other hand, the evaporation rate of the interface is improved, finally, the evaporation capacity is improved, the pool building investment and the occupied land area of an evaporation pool are effectively reduced, and the purpose of increasing yield and efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a rotary wind-solar coupled interfacial evaporator. Background Art

[0002] In traditional sea salt and lake salt solar evaporation ponds, the evaporation ponds account for more than 2 / 3 of the area. Because the solar evaporation ponds are flat evaporation, the heat transfer area is small, so the evaporation time is long. Even in areas with rich light resources such as the Qinghai-Tibet Plateau and an annual rainfall of ≤50mm, the annual natural evaporation is only about 2900mm. Therefore, in order to achieve the purpose of rapid evaporation, many forced evaporation technologies have emerged, such as spray and impeller atomization evaporators, which effectively improve the evaporation efficiency, but there are still problems of high energy consumption, especially the loss of sprayed brine due to strong winds in coastal salt lakes. Therefore, in order to overcome the above deficiencies, it is urgent to provide a new evaporator to efficiently increase the evaporation amount, effectively reduce the construction investment and land occupation area of the evaporation pond, and achieve the purpose of increasing production and efficiency. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a rotary wind-solar coupled interfacial evaporator, which effectively increases the evaporation interface area on the one hand and improves the interfacial evaporation rate on the other hand, ultimately increasing the evaporation amount, effectively reducing the construction investment and land occupation area of the evaporation pond, and achieving the purpose of increasing production and efficiency.

[0004] The technical solution of the utility model is as follows:

[0005] The rotary wind-solar coupled interfacial evaporator includes a rotating shaft, the rotating shaft is installed on a bracket and driven by a motor to rotate, several thin sheets are arranged on the rotating shaft, solar heat-absorbing coatings are arranged on both side surfaces of the thin sheets, a brine spraying device is arranged on one side of the thin sheets or a brine pond is arranged below the thin sheets, and part of the thin sheets are immersed in the brine.

[0006] Preferably, the thin sheets are in a circular ring shape, several circular ring-shaped thin sheets are arranged at intervals along the length direction on the rotating shaft, and the thin sheets are sleeved on the rotating shaft through openings at the centers.

[0007] Preferably, keels are arranged on the side surfaces of the circular ring-shaped thin sheets.

[0008] Preferably, keels are connected between the keels of adjacent circular ring-shaped thin sheets.

[0009] Preferably, the thin sheets are in a plate shape, and a circle of plate-shaped thin sheets are arranged at intervals along the circumferential direction on the rotating shaft.

[0010] Preferably, the plate-shaped thin sheets are in an arc shape and the bending directions of the circle of thin sheets are the same.

[0011] Preferably, the plate-shaped thin sheets are fixed on the rotating shaft through keels.

[0012] Preferably, a plurality of perforations are provided on the thin sheet.

[0013] Preferably, the rotating shaft is rotatably connected to the bracket through a bearing.

[0014] Preferably, a plurality of rotating shafts are provided, and adjacent rotating shafts are connected by a coupling.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] The rotary wind-solar coupled interfacial evaporator of the present utility model effectively increases the evaporation interface area through the structural design of multiple thin sheets; at the same time, the rotary wind-solar coupled interfacial evaporator of the present utility model is affected by two acting factors. One is the convection of the wind (i.e., drying), and the other is the absorption of solar light energy, which is converted into heat energy, so that the temperature of the thin sheet position irradiated by the solar energy increases, accelerating the evaporation of the water film (i.e., drying in the sun), thereby improving the interfacial evaporation rate, ultimately effectively increasing the evaporation amount, effectively reducing the construction investment and land occupation area of the evaporation pond, and achieving the purpose of increasing production and efficiency. Description of the Drawings

[0017] Figure 1 is a top view of the rotary wind-solar coupled interfacial evaporator with a brine spraying device of the present utility model.

[0018] Figure 2 is a schematic structural diagram of the rotary wind-solar coupled interfacial evaporator with a brine spraying device of the present utility model.

[0019] Figure 3 is a schematic structural diagram of the rotary wind-solar coupled interfacial evaporator with a brine pond of the present utility model.

[0020] Figure 4 is a schematic structural diagram of the circular ring-shaped thin sheet in the present utility model.

[0021] Figure 5 is a schematic structural diagram of the plate-shaped thin sheet in the present utility model.

[0022] Figure 6 is a schematic structural diagram of the arc-shaped plate-shaped thin sheet in the present utility model.

[0023] Figure 7 is a schematic structural diagram of the clamping plate in the present utility model, where the left figure is a schematic diagram when the center of the clamping plate is a circular tube, and the right figure is a schematic diagram when the center of the clamping plate is a square tube.

[0024] In the figure, 1, rotating shaft; 2, bracket; 301, motor; 302, reducer; 4, thin sheet; 401, perforation; 5, brine spraying device; 6, brine pond; 7, keel; 8, clamping plate. Detailed implementation mode

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present utility model, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model.

[0026] Embodiment 1

[0027] The rotary wind-solar coupled interfacial evaporator of this embodiment, as Figures 1-3 shown, includes a rotating shaft 1, the rotating shaft 1 is installed on a bracket 2 and driven to rotate by a motor 301. A plurality of thin sheets 4 are arranged on the rotating shaft 1, and solar heat-absorbing coatings are arranged on both side surfaces of the thin sheets 4. A brine spraying device 5 is arranged on one side of the thin sheets 4 or a brine pool 6 is arranged below the thin sheets 4, and part of the thin sheets 4 are immersed in the brine.

[0028] Specifically, in this embodiment, the structure of the thin sheet 4 can be type A or type B. Among them, as Figures 1-4 shown, the type A thin sheet 4 is in a circular ring shape, and a plurality of circular ring-shaped thin sheets 4 are arranged at intervals along the length direction on the rotating shaft 1. The thin sheet 4 is sleeved on the rotating shaft 1 through an opening at the center. The material of the circular ring-shaped thin sheet 4 can be a smooth surface, or a corrugated surface, a corrugated surface, an I-shaped, or a hollow profile, and can be a metal material or a plastic material. As Figure 7 shown, a circular tube or a square tube (determined whether to use a circular tube or a square tube according to the shape of the rotating shaft 1) is arranged at the center of the circle of the type A thin sheet 4, and clamping plates 8 are arranged at both ends of the tube to make the structure in an I-shape, and the clamping plates 8 at both ends clamp and fix the thin sheet 4. Finally, the thin sheet 4 is fixed on the rotating shaft 1 through this I-shaped structure.

[0029] When assembling the evaporator of the type A thin sheet 4, the prefabricated thin sheets 4 are sequentially sleeved on the rotating shaft 1, mechanically fixed at equal intervals, then the bearings are installed and hoisted onto the frame, and then a speed reducer 302 and a motor 301 are installed at the shaft end at one end or in the middle of two evaporators, and finally the brine spraying device 5 is installed. When the evaporator is placed vertically, the spray heads of the brine spraying device 5 are also arranged vertically.

[0030] The type B thin sheet 4 is in a plate shape, and a circle of plate-shaped thin sheets 4 are arranged at intervals of 360° along the circumferential direction on the rotating shaft 1. The plate-shaped thin sheet 4 can be a straight plate shape as Figure 5 shown, or can be in a curved arc shape as Figure 6 shown, and the bending directions of the thin sheets 4 in a circle on the rotating shaft 1 are the same, reducing the resistance during underwater transfer in the brine pool 6. Among them, when assembling the evaporator of the type B thin sheet 4, the rotating shaft 1 is first installed with bearings and then fixed to the frame, and then the keel 7 is fixed to the rotating shaft 1 by screws, and the prefabricated thin sheets 4 are fixed to the keel 7 by screws.

[0031] In addition, in order to enhance the stability of the structure of the thin sheet 4, asFigure 4 As shown, the upper keel 7 can be fixed on the side surface of the A-type sheet 4, and the keels 7 can also be connected between the keels 7 of adjacent sheets 4. The material of the keel 7 can be metal, wood or plastic, so that a plurality of sheets 4 are connected into one body, enhancing the stability of the evaporator. When the sheet 4 is of B-type structure, as Figures 5-6 shown, the keels 7 can be connected between adjacent sheets 4 to further enhance the structural stability. As Figure 4 shown, the A-type or B-type sheet 4 can also be perforated 401 to enhance the convection of wind and increase the evaporation amount of brine.

[0032] A plurality of rotating shafts 1 can be provided, which are connected into any required length through couplings. A plurality of brackets 2 are provided at both ends and in the middle of the rotating shaft 1, and the brackets 2 and the rotating shaft 1 are connected through bearings. A speed reducer 302 and a motor 301 are installed at any one end of the rotating shaft 1 to drive the rotation of the rotating shaft 1. The speed reducer 302 and the motor 301 can be at one end of the evaporator or in the middle of two evaporators, or can be driven in the form of a transmission belt to drive the operation of a plurality of evaporators.

[0033] When the evaporator of this embodiment is installed in a non-halogen water tank, as Figures 1-2 shown, a brine spraying device 5 can be installed at a certain position of the runner, the brine is pumped into the spray head and then sprayed onto the rotating sheet 4, which is convenient for the brine to quickly evaporate on the sheet 4.

[0034] The A-type sheet 4 and the B-type sheet 4 in this embodiment can be on different evaporators or on different rotating shafts 1 of the same evaporator. The rotating shaft 1 of the evaporator of this embodiment can be horizontally arranged or vertically arranged. When vertically arranged, the brine spraying device 5 can be used, and the vertical arrangement saves land and can form an evaporator array composed of a plurality of evaporators. And when the sheet 4 of the evaporator is of B-type or A-type + B-type, the evaporator can be driven to rotate by wind power to achieve the power-saving windmill mode.

[0035] The drive power of the evaporator of the present utility model can be in a zero-carbon mode, using new energy power sources such as wind power and solar photovoltaics. Most salt lakes and coastal areas are rich in wind and light resources, and the power consumption itself is small.

[0036] When the evaporator of this embodiment is in use, during the daytime with sunlight, the evaporator evaporates by the wind-light coupling interface, while at night or on cloudy days without sunlight, there is only wind convection evaporation. When the temperature is high, the light radiation is large, and the wind speed is high, the rotation speed of the evaporator sheet 4 can be increased to increase the humidification amount of the sheet 4; while when the light is poor, the wind force is small or there is no sunlight, the rotation speed of the evaporator sheet 4 can be reduced to reduce the humidification amount of the sheet 4; when the temperature is low, the humidity is high or there is precipitation, there is no evaporation condition, and the machine can be stopped.

[0037] Using the rotary wind-solar coupled interfacial evaporator of this embodiment, not only can the convective wind be utilized for interfacial evaporation of the thin sheet 4, commonly known as air drying, but also the solar heat-absorbing coating on the thin sheet 4 can be used to increase the temperature of the evaporation interface by absorbing solar heat, thereby improving the evaporation rate, commonly known as sun drying. The evaporator of this embodiment utilizes the dual factors of air drying and sun drying to promote the evaporation rate of the water film on the thin sheet 4. At the same time, through the rotation of the thin sheet 4, not only the continuous cycle of humidification and evaporation is realized, but also the radiation angle of light and the convective flow direction of wind can be adjusted as the thin sheet 4 rotates. In addition, the evaporator of this embodiment also increases the interfacial evaporation area by using multiple thin sheets 4, and finally effectively improves the brine evaporation amount by increasing the interfacial evaporation rate and effectively increasing the evaporation interface area in two ways.

[0038] Embodiment 2

[0039] The rotating shaft 1 is the central support structure and torque transmission body of the evaporator. The rotating shaft 1 not only has requirements for good mechanical strength and stiffness, but also must have good salt corrosion resistance. The material can be a metal material or a metal-rubber-plastic composite material, which can be a solid material or a pipe. Such as duplex steel 2205, 2207, SUS304, SUS316, carbon steel pipe rubber-plastic composite liner, Q690 / PVC, Q390 / PP, Q420 / PI, Q550 / PPR, Q460 / RTV, etc. For example:

[0040] (1) The rotating shaft 1 is a SUS304 round steel with a specification of 150×10000 (mm). During processing, perforations 401 are machined and tapped on the round steel, and keyways are machined on the shaft head. Then, according to the design, a transmission wheel (pulley, gear or sprocket) is installed, or a bearing is installed at the other end;

[0041] (2) The rotating shaft 1 is a duplex steel 2205 steel pipe with a specification of 250×15000×10 (mm). During processing, drilling, tapping and milling (keyway) are carried out on the pipe according to the design;

[0042] (3) The rotating shaft 1 is a Q690 / PVC carbon steel-plastic composite pipe or 0.55 / FRP composite pipe with a specification of 300×20000×150 (mm). During processing, the same drilling, tapping and keyway milling pre-treatment can be carried out on it;

[0043] (4) The rotating shaft 1 is a SUS316 square steel pipe with a specification of 250×250×8 (mm). During processing, shaft heads are inlaid at both ends and fixed by welding or wire drawing machinery.

[0044] Embodiment 3

[0045] The material requirements for the thin sheet 4 are that the material is thin, the space is small, and the specific surface area is large, which can effectively obtain a larger evaporation interface area ratio in a relative space.

[0046] The thin sheet 4 can be made of metal, plastic or composite materials. The main technical requirements are high strength and salt corrosion resistance, such as stainless steel sheets SUS304 / 316, duplex steels 2205 / 2207, plastic sheets such as PVC, PE, PP, BOPET, PC, and thin sheets of thermosetting plastics FRP, or two-layer grid plates. For example:

[0047] (1) When using metal materials as the material of the thin sheet 4, during processing, a stainless steel plate of SUS316 or duplex steel 2205 / 2207 with a specification of 1.2×6000×1200 (mm) is selected; the perforations 401 are made by laser drilling or mechanical punching, the specification of the perforations 401 is φ8mm, and the punching rate is 20%.

[0048] (2) For the solar heat absorption coating, (a) spraying fluorocarbon resin nano-silicon titanium nickel heat absorption coating, or fluorocarbon / nickel chromium heat absorption coating can be adopted; (b) electroplating black chromium / black nickel heat absorption coating on the surface of the thin sheet 4.

[0049] (3) When using plastic materials (thermoplastic or thermosetting plastics) as the material of the thin sheet 4, during processing, the heat absorption material can be premixed in the plastic raw materials. For example, PVC, PC, and PET thermoplastics are made into coils of any length by calendering equipment. When used for the evaporator of the type A thin sheet 4, the above-mentioned coils are flattened and heat-set. When used for the evaporator of the type B thin sheet 4, it is shaped according to the shape required by the equipment through a thermoforming device. When using thermosetting plastic FRP, the heat absorption material can be dispersed in the resin and formed on a mold with the designed required shape. The thermosetting plastic FRP can be of the unsaturated polyester resin type or the epoxy phenolic resin type, etc. When used for double-layer grid plates, an extrusion process can be used.

[0050] (4) Heat absorption materials are added to plastic materials, such as 10 - 15% of vanadium titanate powder, 5% of carbon black (accounting for the total mass of the resin and heat absorption materials), or a mixed powder of one or two of anodic aluminum oxide powder, black chromium, black nickel powder, and titanium nitride oxide powder, with a proportion of 15 - 20%.

[0051] For example, when 15% of vanadium titanate powder and 5% of carbon black are added to PVC or PC materials, for a 2mm thick thin sheet 4 material, its heat absorption performance test shows: absorption rate ≥91%, emissivity ≤9%, and the simulated artificial aging life is 10 years.

[0052] For the thin sheet 4 material made of FRP thermosetting plastic, polyester unsaturated resin type, 1:1 titanium nitride oxide and black chromium (with a proportion of 20%), its heat absorption performance test shows: absorption rate ≥94%, emissivity ≤6%, and the simulated artificial aging life ≥8 years.

[0053] The characteristic of using plastic materials to make the thin sheet 4 is that the heat absorption function is formed in one step with the production of the material, and the thermosetting plastic can be shaped in one step.

[0054] Example 4

[0055] The perforations 401 on the thin sheet 4 are formed by punching, and can be processed by mechanical press stamping process or laser drilling. The aperture of the drilling is between φ4 - 15mm, and the drilling rate is between 15 - 30%.

[0056] When drilling on thin sheets 4 made of plastic materials such as PVC, PC, PET or FRP, the aperture is φ6mm, the drilling rate is 25%, and the specification of the thin sheet 4 is 1500×2.5×10000 (mm).

[0057] When using a hollow grid board to make the thin sheet 4, the drilling can penetrate the two - layer board, or can be drilled on both sides. First drill one side and then the other side, and pay attention to drilling in the part without vertical ribs.

[0058] The rotary - type wind - solar coupled interfacial evaporator of the present utility model can be used in the fields of high - salt wastewater treatment, evaporation ponds in coastal solar salt pans, evaporation of salt lakes and brine mines. The efficiency of this forced evaporation has been significantly improved. Further explanations are given in combination with the embodiments:

[0059] Example 5

[0060] The rotary - type wind - solar coupled interfacial evaporator is used for the forced evaporation of high - salt wastewater evaporation ponds:

[0061] High - salt wastewater is a difficult point in wastewater treatment, and the treatment cost is relatively high. Common methods include membrane methods (reverse osmosis, nanofiltration, ultrafiltration, etc.), thermal methods (distillation methods such as MVR, MSF, MED, FRE, etc.). They consume a large amount of consumables and energy. For example, for MED low - temperature multi - effect evaporation, the cost per ton of water (four - effect) is 200 yuan / ton, and MVR is about 100 yuan / T.

[0062] The evaporation of the present utility model for high - salt wastewater evaporation ponds has remarkable high efficiency and energy - saving performance. For example, the rotary diameter of the evaporator of the present utility model is 10m, the length (height) is 12m, the material of the thin sheet 4 is PC material or PVC material, it is installed vertically, the spraying power is 2kw, the maximum flow rate is 24T / h, the rotating power of the evaporator is 1.5kw, the total power is 3.5kw, the average evaporation rate is 50%, it is calculated that the average evaporation per day is 288 tons, and the energy consumption cost per ton of evaporated water is 0.29kwh, < 1 yuan / T, and the energy - saving efficiency is remarkable.

[0063] Example 6

[0064] The rotary - type wind - solar coupled interfacial evaporator is used for the forced evaporation of coastal solar salt pans:

[0065] Our country has a long coastline and many coastal beach solar salt pans. An important factor determining the output of the salt pans is the evaporation amount of the evaporation ponds in the salt pans.

[0066] In a salt pan in a coastal area of the Bohai Sea, the annual average natural evaporation is 1850 mm. The evaporator of the present utility model and an impeller atomizing evaporator are installed in the evaporation pond of the salt pan for a comparative test.

[0067] The runner diameter of the evaporator of the present utility model is 9 m, the height (length) is 15 m, the thin sheet 4 is made of PC material, and it is installed vertically. The total power is 4.4 kw, of which the runner power is 2.2 kw and the spray water pump power is 2.2 kw. Three units are installed with a total power of 13.2 kw.

[0068] At the same time, 100 impeller atomizing evaporators are installed, with each unit having a power of 12 kw. Among them, the power of the evaporator motor 301 is 11 kw and the water pump power is 1 kw, with a total power of 1200 kw.

[0069] The daily test startup results are as follows:

[0070] The evaporation capacity of the evaporator of the present utility model is 4500 T, and the unit energy consumption is <0.03 kwh; the evaporation capacity of the impeller atomizing evaporator is 4800 T, and the unit energy consumption is 7 kwh / T.

[0071] The unit energy consumption of the evaporator of the present utility model is one two-hundred-and-thirtieth of that of the impeller atomizing evaporator. Moreover, it is not easy to control the fog dispersion distance of the impeller atomizing evaporator in strong wind weather, and the wind is stronger in the coastal area than in the inland area, so it cannot operate in strong wind.

[0072] Example 7

[0073] The rotary wind-solar coupled interface evaporator is used in a potash fertilizer factory in a salt lake on the Qinghai-Tibet Plateau:

[0074] The weather in the plateau salt lake is characterized by low temperature, large day-night temperature difference, rich light resources and wind resources, and the annual unit evaporation is 3 m.

[0075] The evaporator of the present utility model with type B thin sheet 4, the thin sheet 4 is made of duplex stainless steel 2205, with a specification of runner diameter 10 m and length 20 m, installed horizontally, half immersed in the brine, and the power of the motor 301 is 2.2 kw.

[0076] The evaporator of the present utility model with type A thin sheet 4, the thin sheet 4 is made of PVC, with a specification of runner diameter 8 m and length 20 m, installed horizontally, half immersed in the brine, and the power of the motor 301 is 2.2 kw.

[0077] Installed horizontally, half of the runner is immersed in the brine, and the thin sheet 4 is automatically humidified by rotation to form a water film, while reducing the crystallization on the thin sheet 4.

[0078] The rotary wind-solar coupled interface evaporator of the present utility model can be widely used in the evaporation and concentration treatment of high-salt wastewater, the production of sea salt in natural evaporation lakes and the evaporation of rock salt, and has remarkable energy-saving and efficiency-increasing effects among many methods.

Claims

1. Rotary wind-solar coupled interface evaporator, characterized in that: The invention comprises a rotating shaft (1), which is mounted on a bracket (2) and driven to rotate by a motor (301). A plurality of thin sheets (4) are arranged on the rotating shaft (1), and both sides of the thin sheets (4) are provided with solar heat absorption coatings. A salt water spraying device (5) is arranged on one side of the thin sheets (4), or a salt water pool (6) is arranged below the thin sheets (4), and part of the thin sheets (4) is immersed in the salt water.

2. The rotary wind-solar coupled interface evaporator according to claim 1, characterized in that: The thin slice (4) is in the shape of a ring. A plurality of ring-shaped thin slices (4) are arranged on the rotating shaft (1) at intervals along the length direction. The thin slice (4) is sleeved on the rotating shaft (1) through an opening at the center.

3. The rotary wind-solar coupled interface evaporator according to claim 2, characterized in that: A keel (7) is arranged on the side of the annular thin sheet (4).

4. The rotary wind-solar coupled interface evaporator according to claim 3, characterized in that: A keel (7) is connected between the keels (7) of adjacent annular thin sheets (4).

5. The rotary wind-solar coupled interface evaporator according to claim 1, characterized in that: The thin slices (4) are in the shape of a plate, and a circle of plate-shaped thin slices (4) are arranged at intervals along the circumferential direction on the rotating shaft (1).

6. The rotary wind-solar coupled interface evaporator according to claim 5, characterized in that: The plate-like thin slices (4) are arc-shaped and the bending directions of a circle of thin slices (4) are the same.

7. The rotary wind-solar coupled interface evaporator according to claim 5 or 6, characterized in that: The plate-like thin sheet (4) is fixed on the rotating shaft (1) via a keel (7).

8. The rotary wind-solar coupled interface evaporator according to claim 1, characterized in that: The thin sheet (4) is provided with a plurality of perforations (401).

9. The rotary wind-solar coupled interface evaporator according to claim 1, characterized in that: The rotating shaft (1) is rotatably connected to the bracket (2) via a bearing.

10. The rotary wind-solar coupled interface evaporator according to claim 1, characterized in that: A plurality of rotating shafts (1) are provided, and adjacent rotating shafts (1) are connected via couplings.

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