Solar greenhouse salt drying device
By using capillary water-absorbing blocks and fans to accelerate brine evaporation in a solar greenhouse salt-making device, and combining this with wind power resources, the problems of low brine evaporation efficiency and long production cycle have been solved, achieving a high-efficiency and low-cost salt production process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANKAI UNIV
- Filing Date
- 2023-12-07
- Publication Date
- 2026-07-03
AI Technical Summary
Existing solar greenhouse salt production methods suffer from problems such as low brine evaporation efficiency, long production cycles, and inability to produce salt at night, resulting in low economic benefits.
The evaporation tank is covered with a light-transmitting top cover and contains capillary water absorption blocks and fans. It uses capillary action and wind power to accelerate the evaporation of brine, and promotes the evaporation of brine through wind power generation devices and electrode plates. Combined with wind power resources, it can achieve self-sufficiency and salt production at night.
It improves brine evaporation efficiency, shortens the production cycle, enhances economic benefits, reduces electricity costs by utilizing wind power resources, and allows salt production to continue at night or under adverse weather conditions.
Smart Images
Figure CN117602647B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of salt production technology, and in particular to a solar greenhouse salt-making device. Background Technology
[0002] my country's sea salt production generally adopts the sun-drying method, which relies on the natural evaporation of brine from the surface of the brine pool to gradually concentrate the brine. However, the drawbacks are that the water evaporates slowly, the production cycle is long, and it is almost impossible to operate on rainy days and at night. Although a more advanced step-by-step concentration method has been adopted at present, it still relies on the natural evaporation of brine from the surface of each level of brine pool to gradually concentrate the brine. Its efficiency is still low, which seriously restricts the development of salt production enterprises.
[0003] To improve production efficiency, some companies use methods such as solar greenhouse salt production, dialysis concentration, vacuum evaporation, and hot-press evaporation to produce salt. Except for solar greenhouse salt production, the other methods, while improving efficiency, also consume a lot of energy.
[0004] The solar greenhouse salt production method mainly involves building a qualified, enclosed greenhouse. By enclosing the greenhouse, the temperature of the brine inside is increased, accelerating the evaporation of water and thus increasing the salt production speed. However, solar greenhouse salt production also has some problems, such as low overall solar energy utilization, slow brine evaporation efficiency, and the inability to produce salt at night. These issues result in low overall economic benefits for the engineering application of solar salt production technology, limiting the further development of this technology. Summary of the Invention
[0005] The purpose of this invention is to provide a solar greenhouse salt-making device to solve the problems existing in the prior art, thereby improving brine evaporation efficiency, shortening the salt production cycle, and improving economic benefits.
[0006] To achieve the above objectives, the present invention provides the following solution:
[0007] This invention provides a solar greenhouse salt-producing device, comprising an evaporation tank, a light-transmitting top cover, a capillary water-absorbing block, and a fan. The light-transmitting top cover is detachably connected to the evaporation tank and completely covers the opening of the evaporation tank. An inlet pipe is provided at the end of the evaporation tank away from the light-transmitting top cover, allowing brine to enter the evaporation tank through the inlet pipe. The capillary water-absorbing block is placed inside the evaporation tank, with its bottom end submerged in the brine. The capillary action of the capillary water-absorbing block allows the brine to move to the top of the capillary water-absorbing block. A ventilation hole is provided on the side wall of the evaporation tank near the light-transmitting top cover, located at the top of the capillary water-absorbing block. The fan is fixedly installed inside the ventilation hole and is electrically connected to a wind power generation device.
[0008] Preferably, it also includes a cleaning component, which includes a collection hopper and a scraping device. The scraping device includes a scraper and a driving device. The scraper is close to the top surface of the capillary absorbent block. The driving device is used to drive the scraper to scrape off the solid material on the top surface of the capillary absorbent block. The collection hopper is placed in the evaporation tank and is used to collect the solid material scraped off by the scraper.
[0009] Preferably, the drive device is electrically connected to the wind power generation device.
[0010] Preferably, it also includes an electrode plate, which includes an anode plate and a cathode plate. The anode plate and the cathode plate are respectively placed at the top and bottom of the capillary water absorption block, and the wind power generation device can supply power to the electrode plate.
[0011] Preferably, a light-transmitting prism is fixedly connected to one end of the light-transmitting top cover near the evaporation tank. The large end face of the light-transmitting prism is fixedly connected to the light-transmitting top cover, and the small end face of the light-transmitting prism can extend into the evaporation tank. There is a gap between the light-transmitting prism and the capillary water-absorbing block.
[0012] Preferably, the top surface of the capillary absorbent block is an inclined top surface, and the lowest position of the inclined top surface is close to the opening of the collecting hopper.
[0013] Preferably, the material of the capillary absorbent block is coconut shell cloth, cotton cloth, linen cloth, chemical fiber cloth or non-woven fabric.
[0014] The present invention achieves the following technical effects compared to the prior art:
[0015] This invention provides a solar greenhouse salt-evaporation device. The evaporation tank contains capillary water-absorbing blocks, with their bottom ends submerged in brine. During seawater evaporation, brine enters the evaporation tank through an inlet pipe, contacting the capillary water-absorbing blocks. Through capillary action, the brine is transported upwards along the capillary channels, forming a thin layer of brine on the upper surface of the capillary water-absorbing blocks. Sunlight shines through a translucent top cover onto this thin layer of brine on the upper surface of the capillary water-absorbing blocks. Compared to traditional methods that heat the entire evaporation process... The brine in the evaporation tank concentrates heat and light into a thin layer, enabling more efficient evaporation and improving evaporation efficiency. Simultaneously, the evaporation tank has ventilation holes with fans inside. These fans blow air onto the upper surface of the capillary suction blocks, creating a rapid airflow that generates localized negative pressure. This accelerates the rise of the brine through the capillary channels of the suction blocks, further speeding up evaporation and shortening the salt production cycle, thus improving economic efficiency. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of the solar greenhouse salt-producing device of the present invention;
[0018] Figure 2 This is a schematic diagram of the structure of the light-transmitting top cover and light-transmitting prism of the solar greenhouse salt-drying device of the present invention;
[0019] Figure 3 This is a side view of the solar greenhouse salt-producing device of the present invention;
[0020] Figure 4 This is a schematic diagram of the capillary water absorption block and the collection hopper of the solar greenhouse salt drying device of the present invention.
[0021] In the diagram: 1-Transparent top cover; 2-Evaporation tank; 3-Fan; 4-Water inlet pipe; 5-Capillary suction block; 6-Collection hopper; 7-Scraping device; 8-Electrode plate; 9-Transparent prism; 10-Air duct. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] The purpose of this invention is to provide a solar greenhouse salt-making device to solve the problems existing in the prior art, thereby improving brine evaporation efficiency, shortening the salt production cycle, and improving economic benefits.
[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] This invention provides a solar greenhouse salt drying device, such as... Figure 1As shown, the system includes an evaporation tank 2, a translucent top cover 1, a capillary water-absorbing block 5, and a fan 3. The translucent top cover 1 is detachably connected to the evaporation tank 2 and completely covers the opening of the evaporation tank 2. An inlet pipe 4 is provided at the end of the evaporation tank 2 away from the translucent top cover 1, allowing brine to enter the evaporation tank 2 through the inlet pipe 4. The capillary water-absorbing block 5 is placed inside the evaporation tank 2, with its bottom end submerged in the brine. The capillary action of the capillary water-absorbing block 5 allows the brine to move to the top of the capillary water-absorbing block 5. A side wall near the translucent top cover 1 of the evaporation tank 2 has a [missing information - likely a design feature or feature]. Ventilation holes are located at the top of the capillary water absorption block 5. A fan 3 is fixedly installed inside the ventilation holes and electrically connected to a wind power generation device. During seawater evaporation, brine enters the evaporation tank 2 through the inlet pipe 4. The brine comes into contact with the capillary water absorption block 5 in the evaporation tank 2, and is transported upward along the capillary channels by the capillary action of the capillary water absorption block 5, forming a thin layer of brine on the upper surface of the capillary water absorption block 5. Sunlight shines through the light-transmitting top cover 1 onto the thin layer of brine on the upper surface of the capillary water absorption block 5. Compared with the traditional method of directly heating the entire block by the sun, this method provides a more efficient and effective solution. In the salt fields, the brine transfers heat between different parts, keeping the overall temperature relatively uniform. However, the capillary suction block 5 separates the brine through capillary action, concentrating heat on a thin layer of brine on its upper surface. This isolation of heat transfer between the brine on the upper surface and the brine to be transported below further concentrates the heat, enabling more efficient evaporation. After the thin layer of brine evaporates, more brine is added from below, effectively promoting evaporation and increasing the seawater evaporation efficiency. Simultaneously, the evaporation tank 2 is equipped with ventilation holes for air circulation. A blower 3 is installed inside the hole. The blower 3 blows air onto the upper surface of the capillary water absorption block 5. There is a fast-flowing airflow on the upper surface of the capillary water absorption block 5, which creates a local negative pressure. This accelerates the speed at which the brine rises through the capillary channels of the capillary water absorption block 5, thereby speeding up the evaporation of the brine on the upper surface of the capillary water absorption block 5, shortening the salt production cycle, improving economic efficiency, utilizing the wind power resources in the salt field area, which is clean and low-carbon, with low electricity costs, and can achieve self-sufficiency in most cases. At the same time, excess electricity can be fed into the grid to generate additional revenue.
[0026] In a further preferred embodiment of the present invention, as shown in the example below... Figure 3As shown, the solar greenhouse salt-drying device also includes a cleaning component, which includes a collection hopper 6 and a scraping device 7. The scraping device 7 includes a scraper and a driving device. The scraper is close to the top surface of the capillary water-absorbing block 5. The driving component is used to drive the scraper to scrape off the solid material on the top surface of the capillary water-absorbing block 5. The collection hopper 6 is placed in the evaporation tank 2 and is used to collect the solid material scraped off by the scraper. After evaporation for a period of time, a layer of solid material precipitates on the top surface of the capillary water-absorbing block 5. The driving component drives the scraper to push the solid material on the top surface of the capillary water-absorbing block 5 into the collection hopper 6. When the collection hopper 6 stores a sufficient amount of solid material, it can be pushed out of the evaporation tank 2 to clean and transfer the solid material. More preferably, the driving component can be set to start at a time. Every once in a while, the scraper pushes the solid material accumulated on the surface of the capillary material to the collection hopper 6.
[0027] In a further preferred embodiment of the present invention, the drive device is electrically connected to the wind power generation device, utilizing the wind power resources of the salt field area, which is clean and low-carbon, with low electricity costs, and can achieve self-sufficiency in most cases. At the same time, excess electricity can be fed into the grid to generate additional revenue.
[0028] In a further preferred embodiment of the present invention, the solar greenhouse salt-producing device further includes an electrode plate 8, which comprises an anode plate and a cathode plate. The anode plate and cathode plate are respectively placed at the top and bottom of the capillary water-absorbing block 5. A wind power generation device can supply power to the electrode plate 8. When a continuous thin layer of brine forms on the upper surface of the capillary water-absorbing block 5 and comes into contact with the electrode plate 8, the anode plate and cathode plate at both ends of the capillary water-absorbing block 5 will form an electric field, thereby promoting the migration and enrichment of ions in the brine to the electrode plate 8. The ion concentration near the electrode plate on the upper surface of the capillary water-absorbing block 5 is high, which makes it easier for salt to precipitate. In addition, the anode plate and cathode plate will also generate a certain amount of electric heat after being energized, which can raise the temperature of the brine and realize the rapid precipitation of salt in the brine. When there is a lack of sunlight, the wind power green energy is used to drive the wind turbine 3 and the electrode plate 8 to continue evaporating and producing salt in a low-energy state, which can ensure that the solar greenhouse salt-producing device can continue to perform salt precipitation work at night or when the weather is bad.
[0029] In a further preferred embodiment of the present invention, as shown in the example below... Figure 2As shown, a light-transmitting prism 9 is fixedly connected to one end of the light-transmitting top cover 1 near the evaporation tank 2. The large end face of the light-transmitting prism 9 is fixedly connected to the light-transmitting top cover 1, and the small end face of the light-transmitting prism 9 can extend into the evaporation tank 2. There is a gap between the light-transmitting prism 9 and the capillary water-absorbing block 5. The light-transmitting prism 9 can keep the gap between the top cover and the capillary water-absorbing block 5 narrow or have a gradually narrowing trend. The air duct 10 of the fan 3 is the gap between the light-transmitting prism 9 and the capillary water-absorbing block 5. The narrow gap can form a local negative pressure, and the light-transmitting top cover 1 can also prevent heat loss, forming a local greenhouse effect, enhancing the heat preservation performance, and making the heat better utilized to heat the brine thin layer on the upper surface of the capillary water-absorbing block 5. The greenhouse effect increases the temperature of the brine thin layer on the upper surface of the capillary water-absorbing block 5, reduces the amount of water heated by solar energy, and improves the solar energy utilization rate.
[0030] In a further preferred embodiment of the present invention, as shown in the example below... Figure 4 As shown, the top surface of the capillary absorbent block 5 is an inclined top surface, and the lowest position of the inclined top surface is close to the opening of the collection hopper 6. The inclined top surface makes it convenient for the scraper to push the solid material and use the slope and gravity to collect the solid material into the collection hopper 6.
[0031] In a further preferred embodiment of the present invention, the capillary absorbent block 5 is made of coconut shell cloth, cotton cloth, linen cloth, chemical fiber cloth or non-woven fabric.
[0032] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.
Claims
1. A solar greenhouse salt-producing device, characterized in that: The system includes an evaporation tank, a translucent top cover, capillary suction blocks, and a fan. The translucent top cover is detachably connected to the evaporation tank and completely covers its opening. An inlet pipe is located at the end of the evaporation tank furthest from the translucent top cover, allowing brine to enter the evaporation tank through the inlet pipe. The capillary suction blocks are placed inside the evaporation tank, with their bottom ends submerged in the brine. The capillary action of the capillary suction blocks allows the brine to move to the top of the blocks. Ventilation holes are located on the side wall of the evaporation tank near the translucent top cover. At the top of the water-absorbing block, a fan is fixedly installed in the ventilation hole. The fan is electrically connected to a wind power generation device. It also includes an electrode plate, which includes an anode plate and a cathode plate. The anode plate and cathode plate are respectively placed at the top and bottom of the capillary water-absorbing block. The wind power generation device can supply power to the electrode plate. A light-transmitting prism is fixedly connected to one end of the light-transmitting top cover near the evaporation tank. The large end face of the light-transmitting prism is fixedly connected to the light-transmitting top cover, and the small end face of the light-transmitting prism can extend into the evaporation tank. There is a gap between the light-transmitting prism and the capillary water-absorbing block.
2. The solar greenhouse salt-producing device according to claim 1, characterized in that: It also includes a cleaning component, which includes a collection hopper and a scraping device. The scraping device includes a scraper and a driving device. The scraper is close to the top surface of the capillary absorbent block. The driving device is used to drive the scraper to scrape off the solid material on the top surface of the capillary absorbent block. The collection hopper is placed in the evaporation tank and is used to collect the solid material scraped off by the scraper.
3. The solar greenhouse salt-producing device according to claim 2, characterized in that: The drive unit is electrically connected to the wind power generation unit.
4. The solar greenhouse salt-producing device according to claim 2, characterized in that: The top surface of the capillary absorbent block is an inclined surface, and the lowest point of the inclined surface is close to the opening of the collection hopper.
5. The solar greenhouse salt-producing device according to claim 1, characterized in that: The capillary absorbent block is made of coconut shell cloth, cotton cloth, linen cloth or chemical fiber cloth.