CN110937644B

CN110937644B - High-efficient purifier based on low-grade heat energy and nanometer cloth

Info

Publication number: CN110937644B
Application number: CN201811104782.8A
Authority: CN
Inventors: 杨诺; 彭桂龙; 代浩; 刘小飞
Original assignee: Huazhong University of Science and Technology
Current assignee: Huazhong University of Science and Technology
Priority date: 2018-09-21
Filing date: 2018-09-21
Publication date: 2021-03-26
Anticipated expiration: 2038-09-21
Also published as: CN110937644A

Abstract

The invention belongs to the technical field of water treatment, and discloses a water purifying device utilizing low-grade heat energy and nanometer distribution. The water purifying device comprises a sewage or seawater container, and further comprises a box transparent cover and a heat dissipation device, wherein the heat dissipation device comprises a hot water pipe and reinforcing heat exchange fins and nanometer cloth arranged on the hot water pipe, a water collection tank clamping groove is formed in the circumferential direction of the inner wall of the box, and a condensate water collection tank is fixed in the box through the water collection tank clamping groove. According to the water purifying device, the nanometer cloth can be effectively wetted by water, so that the balance of evaporation and supply of the water is ensured, the flexibility of the nanometer cloth can be well attached to a heat dissipation device with a complex structure, the heat absorption effect is increased, the wetted nanometer cloth can effectively increase the water evaporation surface area, the water evaporation efficiency is greatly improved, the purified water yield is improved, and the cost is low.

Description

High-efficient purifier based on low-grade heat energy and nanometer cloth

Technical Field

The invention belongs to the technical field of water treatment, and particularly relates to a high-efficiency water purifying device based on low-grade heat energy and nanometer cloth.

Background

Water is one of the resources on which life depends, and nowadays, as the population increases, the industry develops, and the environmental pollution increases, the supply situation of the water resource becomes more and more severe. In recent years, in order to solve the problem of water supply, seawater desalination, sewage treatment, and the like have received increasing attention. How to obtain more clean water resources efficiently and cheaply is the most concerned problem. Meanwhile, due to the universality of the water shortage problem in regions, the adaptability of the water purification technology to different environments and requirements is very important.

In the water treatment process, the supply of energy is inevitably required. Today, where energy is increasingly scarce, the pressure on energy supply will be further increased if conventional fossil energy or electric energy is used. Therefore, the use of other forms of energy to purify water is a point of great importance in water treatment technology. Among the many forms of energy, low grade heat energy is a very common one in life and is often wasted due to its low energy density, which is often difficult to utilize efficiently. Such as the residual heat of a power plant, solar heat and the like belong to low-grade heat energy. The low-grade heat energy is fully utilized, so that the consumption of fossil energy can be reduced, and the problems of environmental pollution, global warming and the like are favorably alleviated. Therefore, how to efficiently utilize low-grade energy to purify water becomes one of the mainstream directions in the current industry.

At present, the foremost work in the field mainly focuses on improving the energy conversion efficiency of water purification (or seawater desalination) by utilizing micro-nano materials and technologies. One of the most important ways is to heat the sewage or seawater by collecting low-grade heat energy, evaporate and then condense the water, and finally obtain clean distilled water. In general, a distillation apparatus evaporates water by absorbing low-grade heat energy, and although many improvements have been made on this basis, many different types of low-grade heat energy evaporators have been developed, such as a step evaporator and a wick evaporator using solar energy, the efficiency of the conventional evaporator is generally lower than 30% due to a large amount of heat loss, and meanwhile, the conventional evaporator is bulky in equipment system and difficult to operate and debug. Some researchers concentrate absorbed low-grade heat energy in a film by manufacturing special nano film materials, such as a nano porous graphene film, a nano particle array and the like, so as to form local high temperature, thereby reducing heat loss and accelerating evaporation, so that the efficiency is greatly improved, the utilization efficiency of solar energy (low-grade heat energy) can reach 50-70%, however, the methods have high requirements on the film or the foam material, and the method is difficult to apply in actual life due to high material cost.

Disclosure of Invention

Aiming at the defects or the improvement requirements of the prior art, the invention provides a high-efficiency water purifying device based on nanometer cloth and utilizing low-grade heat energy, it closely combines the reutilization of various sewages or seawater, and fully utilizes the low-grade heat energy to carry out the specific working condition requirement of water purification, the space layout and the structure of the integral water purifying device are redesigned, and particularly, the heat radiating device is improved from the aspects of specific structure composition, the equipped reinforced radiating fins, the working mechanism of the nano cloth correspondingly arranged with the heat radiating device, the installation arrangement between the heat radiating device and other components, and the like, so that the heat exchange area can be effectively reinforced on the basis of utilizing waste hot water waste heat resources, thereby showing the efficiency that improves water purification treatment, but also possess the structure more compact, be convenient for control, environmental suitability is stronger and water purification cost low grade advantage.

In order to achieve the aim, the invention provides a high-efficiency water purifying device based on low-grade heat energy and nano-distribution, which comprises a sewage or seawater container, and is characterized by also comprising a box body arranged on the sewage or seawater container and a transparent cover arranged at the top of the box body; wherein the content of the first and second substances,

the top of the sewage or seawater container is provided with a plurality of mounting grooves, the bottom of the box body is correspondingly provided with a plurality of mounting clamping grooves, so that the heat dissipation devices which are arranged in an array manner can be clamped in the heat dissipation devices, each heat dissipation device comprises a hot water pipe and an enhanced heat exchange sheet arranged on the hot water pipe, the enhanced heat exchange sheets are sleeved on the peripheral surface of the hot water pipe so as to increase the heat dissipation area of the heat dissipation device, the surface of the hot water pipe is fully wrapped with nanometer cloth, and the bottom end of the nanometer cloth has enough allowance so as to be dragged below the water liquid surface of the sewage or seawater container, so that the absorption and the conduction of water can be promoted through the capillary structure of the nanometer cloth, the wet evaporation area is further increased, and the evaporation rate of water is increased;

the inner wall of the box body is circumferentially provided with a water collecting groove, a condensed water collecting groove is fixed in the box body through the water collecting groove, evaporated water vapor is condensed on the surface of the transparent cover, and condensed water is collected by the water collecting groove, so that the purification of sewage or seawater is realized.

Furthermore, the reinforcing heat exchange plates are uniformly or non-uniformly distributed on the hot water pipe and are matched with the structure of the periphery of the hot water pipe.

Further, the reinforcing heat exchange fins are fins, preferably, the fins are in the shape of a circular ring, a spiral shape or a square ring and the like and are matched with the structure of the periphery of the hot water pipe, and further preferably, the hot water pipe is internally provided with a shifting piece for reinforcing flowing water disturbance.

Further, the surface of the nanometer cloth is grown with a micrometer or nanometer structure or coated with micrometer or nanometer particles, preferably, the size of the micrometer or nanometer is less than or equal to 1000 micrometers.

Furthermore, the top of one opposite side of the sewage or seawater container is provided with a first installation clamping groove, and the structural form of the first installation clamping groove is matched with the appearance structure of the heat dissipation device.

Furthermore, the bottom ends of two corresponding side walls of the box body and the first mounting clamping groove are provided with second mounting clamping grooves, and the structural form and the number of the second mounting clamping grooves are matched with those of the first mounting clamping grooves.

Furthermore, at least one side wall of the sewage or seawater container is provided with a water inlet.

Further, a water outlet is formed in the bottom of the sewage or seawater container.

Further, the water collecting tank clamping groove is of a U-shaped clamping groove structure, and preferably, protruding structures matched with the U-shaped clamping groove structure are arranged on the periphery of the condensed water collecting tank.

Furthermore, one end of the condensed water collecting tank is provided with a water collecting tank water outlet pipe, and one side wall of the box body is provided with a water collecting tank water outlet pipe opening corresponding to the water collecting tank water outlet pipe.

Generally, compared with the prior art, the above technical solution conceived by the present invention mainly has the following technical advantages:

1. the water purifying device provided by the invention is designed again by closely combining the reutilization of various sewage or seawater and fully utilizing the specific working condition requirement of low-grade heat energy for water purification, the spatial layout and the structure of the whole water purifying device are improved, particularly, the heat radiating device is improved from various aspects such as the specific structural composition, the equipped reinforced radiating fins, the working mechanism of the nano cloth correspondingly arranged with the heat radiating fins, the installation arrangement between the heat radiating device and other components, and the heat exchange area can be effectively enhanced on the basis of utilizing waste hot water waste heat resources, so that the water purifying treatment efficiency is obviously improved, and the water purifying device also has the advantages of more compact structure, convenience in operation and control, stronger environmental adaptability, low water purifying cost and the like.

2. The water purifying device mainly utilizes heat energy in waste hot water, adopts a plurality of enhanced heat exchange plate structures to increase the heat dissipation area of the heat dissipating device, and simultaneously utilizes the working mechanism of a nanometer part by matching nanometer cloth with micron or nanometer structures growing on the surface or micron or nanometer particles coated on the surface, thereby effectively enhancing the heat exchange area on the basis of utilizing waste heat resources of the waste hot water and obviously improving the efficiency of water purifying treatment.

3. According to the water purifying device, the heat dissipation devices which are designed compactly and the connecting part structures which are matched and clamped with the heat dissipation devices are adopted, so that the heat dissipation devices are effectively and rightly fixed between the sewage or seawater container and the box body, mechanical sealing is realized, the structure is compact, heat leakage of the heat dissipation devices is avoided, and the heat efficiency of the heat dissipation devices is improved.

Drawings

FIG. 1 is an exploded view of a high efficiency water purification device based on low grade heat energy and nano-distribution material according to an embodiment of the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of a high-efficiency water purifying device based on low-grade heat energy and nanometer distribution according to an embodiment of the invention;

FIG. 3 is a schematic view of a container of a high-efficiency water purifying device based on low-grade heat energy and nano-distribution according to an embodiment of the invention;

FIG. 4 is a schematic diagram of a single hot water pipe with enhanced heat exchange fins of an efficient water purification device based on low-grade heat energy and nano-distribution according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a cloth wrapping of a high efficiency water purification apparatus based on low grade heat energy and nano cloth according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a high-efficiency water purifying device box based on low-grade heat energy and nanometer distribution according to an embodiment of the invention;

FIG. 7 is a schematic structural diagram of a water collecting tank of an efficient water purifying device based on low-grade heat energy and nanometer distribution according to an embodiment of the invention;

FIG. 8 is a schematic structural diagram of a neck of a high-efficiency water purifying device based on low-grade heat energy and nano-distribution according to an embodiment of the invention;

fig. 9 is a schematic structural diagram of a glass cover of a high-efficiency water purifying device based on low-grade heat energy and nano-distribution in an embodiment of the invention.

The same reference numbers will be used throughout the drawings to refer to the same or like structures or elements, wherein: 1-sewage or seawater container, 101-water inlet, 102-water outlet, 103-first installation clamping groove, 2-nanometer cloth, 3-heat dissipation device, 301-hot water pipe, 302-enhanced heat exchange sheet, 4-condensed water collecting tank, 401-convex structure, 402-water collecting tank water outlet pipe, 5-box body, 501-second installation clamping groove, 502-water collecting tank water outlet pipe opening, 6-water collecting tank clamping groove and 7-transparent cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Referring to fig. 1 to 9, an embodiment of the present invention provides a high efficiency water purification apparatus based on low grade heat energy and nano cloth, which includes a sewage or seawater container 1, a nano cloth 2, a heat dissipation device 3, a condensed water collection tank 4, a tank 5, a collection tank slot 6, and a transparent cover 7. Wherein, the top of the sewage or seawater container 1 and the bottom of the box body 5 are both correspondingly provided with a plurality of installation clamping grooves which are arranged in an array manner, so that the heat dissipation device 3 is convenient to install, and a good sealing effect is realized through a sealing structure arranged between the sewage or seawater container 1 and the box body 5. The condensed water collecting groove 4 is fixed in the box body 5 through the collecting groove clamping groove 6, the transparent cover 7 is arranged at the top of the box body 5 and is strictly sealed with the box body, the nanometer cloth 2 is wrapped on the surface of the heat dissipation device 3, the sewage or seawater absorbed from the sewage or seawater container 1 is evaporated by using low-grade heat energy, steam is condensed on the surface of the transparent cover 7, and the condensed water is collected by the condensed water collecting groove 4, so that the sewage or seawater is purified. The surface of the nanometer cloth 2 is grown with micrometer or nanometer structures or coated with micrometer or nanometer particles, preferably, the size of the micrometer or the nanometer is less than or equal to 1000 micrometers. The nanometer cloth can be effectively moistened by water, the evaporation and the supply balance of water are guaranteed, the flexibility of the nanometer cloth can be well attached to a heat dissipation device with a complex structure, the heat absorption effect is increased, the water evaporation surface area can be effectively increased through the moistened nanometer cloth, the evaporation efficiency of the water is greatly improved, and the yield of purified water is improved.

As shown in fig. 3, the sewage or seawater container 1 may be rectangular, circular or other structures, preferably rectangular structures, and at least one side wall is provided with a water inlet 101, preferably each side wall is provided with the water inlet 101, so as to rapidly input sewage or seawater to be purified. The top of the opposite side of the sewage or seawater container 1 is provided with a first mounting slot 103, the structural form of the first mounting slot 103 is matched with the appearance structure of the heat dissipation device 3, and if the appearance structure of the heat dissipation device 3 is cylindrical, the first mounting slot 103 is a matched semicircular structure. Preferably, the first mounting slots 103 are plural and arranged in an array at the top end of the side wall. As shown in fig. 6, the structural form of the box 5 matches with that of the sewage or seawater container 1, the bottom ends of the two side walls corresponding to the sewage or seawater container 1 are provided with second installation slots 501, the structural form and the number of the second installation slots 501 match with those of the first installation slots 103, so that a plurality of heat dissipation devices are fixed between the sewage or seawater container 1 and the box 5 and are mechanically sealed, heat leakage of the heat dissipation devices is avoided, the heat efficiency of the heat dissipation devices is improved, the evaporation efficiency of the sewage or seawater is further improved, and the water purification efficiency is improved.

As shown in fig. 4 and 5, the heat dissipation device 3 includes a hot water pipe 301 and a nano fabric 2 disposed on the hot water pipe, preferably, the hot water pipe 301 is designed to have a reinforcing heat exchange fin 302, the reinforcing heat exchange fin 302 may be a circular or square ring structure, and is matched with the peripheral structure of the hot water pipe 301, and is sleeved on the peripheral surface of the hot water pipe 301 to increase the heat dissipation area of the heat dissipation device and improve the evaporation efficiency of the sewage or seawater. When hot water with a large amount of heat flows through the hot water pipe 301, the heat is transferred to the nano cloth 2 through the heat dissipation enhancing heat exchange fins 302, and the sewage or seawater is rapidly evaporated through the nano cloth. Further preferably, the plurality of enhanced heat exchange fins 302 are uniformly or non-uniformly arranged on the hot water pipe 301, so that the evaporation efficiency of the sewage or the seawater is greatly improved, and further preferably, a shifting sheet for enhancing flowing water disturbance is arranged in the hot water pipe 301. In addition, as shown in fig. 5, the nano cloth 2 is fully wrapped on the surface of the hot water pipe 301, and the bottom end thereof has enough margin to be dragged below the water level of the sewage or seawater container 1. The obtained nanometer cloth 2 enables the sewage or seawater to be heated more intensively and can effectively increase the evaporation rate of water. In addition, the sewage or seawater is separated from the bottom container by the nano cloth 2 under the capillary action, and various impurities in the sewage or seawater are deposited on the bottom of the sewage or seawater container 1. In order to facilitate cleaning, the bottom of the sewage or seawater container 1 is also provided with water outlets 102, and the structural form and the number of the outlets 102 can be designed according to actual requirements, so that the sewage discharge requirement can be met. The heat dissipation area of the heat dissipation device is increased by the aid of the heat dissipation devices arranged in the array and the enhanced heat exchange fin structures distributed on each heat dissipation device, heat exchange can be effectively enhanced, the evaporation efficiency of sewage or seawater is improved, the heat utilization efficiency of waste hot water is further improved, and the evaporation efficiency of water is improved. As a preferable scheme of the embodiment, the reinforcing heat exchange fins 302 are fins, and further preferably, the structure of the fins is in the shape of a circular ring, a spiral shape, a square ring or the like, and is matched with the structure of the outer periphery of the hot water pipe (301).

As shown in fig. 6 to 8, a water collecting groove 6 is circumferentially arranged along the inner wall of the box body 5, and the water collecting groove 6 is preferably in a U-shaped groove structure as shown in fig. 8, so as to be conveniently matched with the condensed water collecting groove 4, thereby fixing the condensed water collecting groove 4 in the box body 5. The structural style of the condensate water collecting tank 4 is matched with that of the box body 5, for example, the condensate water collecting tank is of a rectangular structure as shown in fig. 7, and the periphery of the condensate water collecting tank is provided with protruding structures 401 matched with the U-shaped clamping grooves, so that the condensate water collecting tank 4 is convenient to install, disassemble and replace, the maintenance performance of the device is improved, and the service life of the device is prolonged. Furthermore, one side of the condensed water collecting tank 4 is provided with a water collecting tank outlet pipe 402, and one side wall of the box body is correspondingly provided with a water collecting tank outlet pipe opening 502, so that the water collecting tank outlet pipe 402 extends out of the box body 5 through the water collecting tank outlet pipe opening 502. The water vapor evaporated by the heat dissipation device 3 is condensed by the transparent cover 7 and is recycled and output by the condensed water collecting tank 4, so that the purified water is collected.

As shown in fig. 9, the transparent cover 7 is preferably a rectangular pyramid structure where the evaporated water vapor is condensed into droplets and collected along the inclined surface into the condensed water collecting sump 4 for recovery. Meanwhile, the transparent glass can transmit sunlight, so that the internal condition of the device can be observed conveniently. In addition, the inclination angle of the transparent cover 7 is preferably determined by the glass material selected to accelerate the sliding and collection of the condensed water, and is determined according to actual requirements.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A high-efficiency water purifying device based on low-grade heat energy and nanometer distribution comprises a sewage or seawater container (1), and is characterized by further comprising a box body (5) arranged on the sewage or seawater container (1) and a transparent cover (7) arranged at the top of the box body (5); wherein the content of the first and second substances,

the top of the sewage or seawater container (1) is provided with a plurality of mounting grooves, the bottom of the box body (5) is correspondingly provided with a plurality of mounting clamping grooves, so that the heat dissipation devices (3) arranged in an array manner can be clamped in the mounting grooves, the heat dissipation devices (3) comprise hot water pipes (301) and enhanced heat exchange fins (302) arranged on the hot water pipes (301), the enhanced heat exchange fins (302) are sleeved on the peripheral surfaces of the hot water pipes (301) to increase the heat dissipation area of the heat dissipation devices (3), the surfaces of the hot water pipes (301) and the enhanced heat exchange fins (302) are fully wrapped with nanometer cloth (2), the bottom end of the nanometer cloth (2) is provided with enough allowance to enable the nanometer cloth to be dragged below the water surface of the sewage or seawater container (1), and therefore, the absorption and the conduction of water can be promoted through the capillary structure of the nanometer cloth (2), but also further increases the evaporation area after wetting, thereby increasing the evaporation rate of water;

the inner wall of the box body (5) is circumferentially provided with a water collecting groove clamping groove (6), the condensed water collecting groove (4) is fixed in the box body (5) through the water collecting groove clamping groove (6), evaporated water vapor is condensed on the surface of the transparent cover (7), and condensed water is collected by the condensed water collecting groove (4), so that the purification of sewage or seawater is realized.

2. The water purifying device based on low-grade heat energy and nanometer cloth of claim 1, wherein the enhancing heat exchange fins (302) are distributed on the hot water pipe (301) uniformly or non-uniformly and match with the structure of the periphery of the hot water pipe (301).

3. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth according to claim 1, characterized in that the reinforcing heat exchange fins (302) are fins, and the structure form of the fins is a circular ring, a spiral or a square ring shape, and is matched with the structure of the periphery of the hot water pipe (301).

4. A high efficiency water purification device based on low grade heat energy and nanometer cloth according to claim 3, characterized in that the hot water pipe (301) is provided with a plectrum for enhancing the flowing water disturbance.

5. The high-efficiency water purifying device based on low-grade heat energy and nano cloth according to claim 1, characterized in that the nano cloth (2) has micron or nano structures grown on the surface or has micron or nano particles coated on the surface.

6. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth of claim 5, wherein the size of the micron or nanometer is less than or equal to 1000 microns.

7. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth according to claim 1, characterized in that a first mounting slot (103) is arranged at the top of the opposite side of the sewage or seawater container (1), and the structural form of the first mounting slot (103) is matched with the appearance structure of the heat sink (3).

8. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth according to claim 7, wherein the bottom ends of two corresponding side walls of the box body (5) and the first mounting clamping grooves (103) are provided with second mounting clamping grooves (501), and the structural form and number of the second mounting clamping grooves (501) are matched with the structural form and number of the first mounting clamping grooves (103).

9. The high-efficiency water purifying device based on low-grade heat energy and nanometer distribution as claimed in claim 1, wherein at least one side wall of the sewage or seawater container (1) is provided with a water inlet (101).

10. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth according to claim 1, characterized in that the bottom of the sewage or seawater container (1) is provided with a water outlet (102).

11. The high-efficiency water purifying device based on low-grade heat energy and nanometer cloth according to claim 1, wherein the water collecting groove (6) is of a U-shaped groove structure, and the periphery of the condensed water collecting groove (4) is provided with a protruding structure (401) matched with the U-shaped groove structure.

12. A high efficiency water purification device based on low grade heat energy and nano cloth according to any one of claims 1 to 11, wherein one end of the condensed water collecting tank (4) is provided with a water collecting tank outlet pipe (402), and one side wall of the box body (5) is provided with a water collecting tank outlet pipe mouth (502) corresponding to the water collecting tank outlet pipe (402).