Efficient evaporation equipment for producing edible salt

Abstract

The invention discloses efficient evaporation equipment for producing edible salt, which comprises a concentration tank and a crystallization tank, and a solar panel is laid at the bottom of the concentration tank; an electric heater is arranged at the bottom of the crystallization tank, and the solar panel is connected with the electric heater and supplies power to the electric heater; the concentration tank is communicated with the crystallization tank, so that saline water in the concentration tank flows into the crystallization tank. Compared with the prior art, the efficient evaporation equipment for producing the edible salt has the advantages that the solar panel is laid at the bottom of the concentration tank, when saline water in the concentration tank is irradiated by the sun, evaporation and concentration of the saline water are promoted, the solar panel can generate electric energy, and the electric energy is supplied to the electric heater in the crystallization tank to generate heat; evaporation and crystallization of the saline water in the crystallization tank are accelerated, and evaporation and concentration of the saline water in the concentration tank can be promoted by heat generated during power generation of the solar panel; according to the evaporation equipment, solar energy can be fully utilized, energy loss is reduced, more solar energy is used for water evaporation, and the evaporation crystallization efficiency of edible salt is improved.

Description

Technical Field

[0001] This invention relates to the field of salt production technology, specifically to a high-efficiency evaporation device for producing edible salt. Background Technology

[0002] Evaporation is a crucial step in the salt production process, directly affecting the yield and quality of salt.

[0003] The traditional method is to use the sun to dry seawater or salt lake water to obtain edible salt. However, this method limits the temperature of the seawater due to heat loss, resulting in very low evaporation efficiency and requiring a long time to dry the seawater or salt lake water, which is difficult to meet current production needs.

[0004] While using external energy can accelerate the evaporation and crystallization of salt, it also incurs additional energy costs. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a high-efficiency evaporation device for producing edible salt, thereby solving the technical problem of low evaporation efficiency in the production of edible salt in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a high-efficiency evaporation device for producing edible salt, comprising: a concentration tank and a crystallization tank. The bottom of the concentration tank is covered with solar panels; the bottom of the crystallization tank is equipped with an electric heater, and the solar panels are connected to and power the electric heater; the concentration tank and the crystallization tank are connected so that the brine in the concentration tank flows into the crystallization tank.

[0007] In some embodiments, the concentration tank has a first tank bottom, the first tank bottom including a first tank body and a glass cover plate, the first tank body and the glass cover plate being detachably connected to enclose a first placement cavity, and the solar panel being disposed in the first placement cavity.

[0008] In some embodiments, the first placement cavity is filled with transparent thermally conductive silicone to conduct heat to the glass cover.

[0009] In some embodiments, the concentration tank further has a transparent first side plate, which is fixed to the edge of the glass cover to form an open groove structure with the glass cover.

[0010] In some embodiments, the crystallization tank has a second tank bottom, the second tank bottom including a second tank body and a heat-conducting cover plate, the second tank body and the heat-conducting cover plate being detachably connected to enclose a second placement cavity, and the electric heater being disposed in the second placement cavity and connected to the heat-conducting cover plate for heat conduction.

[0011] In some embodiments, the crystallization tank further has a transparent second side plate, which is fixed to the edge of the heat-conducting cover plate to form an open groove structure with the heat-conducting cover plate.

[0012] In some embodiments, the bottom of the second tank is set at a height lower than the bottom of the first tank, and the concentration tank and the crystallization tank are connected by a guide pipe, on which a first valve is provided; when the first valve is opened, the brine in the concentration tank can spontaneously flow into the crystallization tank.

[0013] In some embodiments, a supply tank is also included, which is connected to the concentration tank for supplying brine to the concentration tank.

[0014] In some embodiments, the system further includes multiple temperature sensors and a controller. The probes of the multiple temperature sensors are evenly distributed within the crystallization tank. The temperature sensors are connected to the controller, which is connected to the first valve and the supply tank. When the detection values ​​of several of the temperature sensors reach a threshold, the controller can control the first valve to open for a preset time, allowing the brine in the concentration tank to flow into the crystallization tank. Then, the controller controls the first valve to close and controls the supply tank to open for a preset time, allowing the brine in the supply tank to flow into the concentration tank.

[0015] In some embodiments, the system further includes a storage battery, the solar panel being electrically connected to the storage battery, and the storage battery being electrically connected to the electric heater.

[0016] Compared with the prior art, the high-efficiency evaporation equipment for producing edible salt provided by the present invention has solar panels laid at the bottom of the concentration tank. When the sun shines on the brine in the concentration tank, it not only promotes the evaporation and concentration of the brine, but also enables the solar panels to generate electricity. The electricity powers the electric heater in the crystallization tank to generate heat, accelerating the evaporation and crystallization of the brine in the crystallization tank. Furthermore, the heat generated when the solar panels generate electricity can also promote the evaporation and concentration of the brine in the concentration tank. This evaporation equipment can make full use of solar energy, reduce energy loss, and enable more solar energy to be used for water evaporation, thereby improving the evaporation and crystallization efficiency of edible salt. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the high-efficiency evaporation equipment for producing edible salt provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the intermediate concentration tank. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] To address the technical problem of low evaporation efficiency in current edible salt production, this invention provides a high-efficiency evaporation device for edible salt production, which can fully utilize solar energy and improve the evaporation and crystallization efficiency of edible salt.

[0020] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the high-efficiency evaporation equipment for producing edible salt provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the concentration tank. The high-efficiency evaporation equipment for producing edible salt includes a concentration tank 1 and a crystallization tank 2.

[0021] A solar panel 3 is installed at the bottom of the concentration tank 1, and an electric heater 4 is installed at the bottom of the crystallization tank 2. The solar panel 3 is connected to the electric heater 4 and supplies it with power. The concentration tank 1 and the crystallization tank 2 are connected, allowing the brine in the concentration tank 1 to flow into the crystallization tank 2.

[0022] Seawater, salt lake water, or other saline solutions, whether treated for impurities or not (hereinafter collectively referred to as brine), are injected into concentration tank 1. Under sunlight, the brine evaporates and concentrates, while solar panels 3 generate electricity. The heat generated by the solar panels also contributes to the evaporation and concentration of the brine in concentration tank 1. The concentrated brine flows into crystallization tank 2. The electricity generated by the solar panels 3 powers the electric heater 4 in crystallization tank 2, accelerating the evaporation and crystallization of the brine. This evaporation equipment fully utilizes solar energy, reduces energy loss, and allows more solar energy to be used for water evaporation, thus improving the evaporation and crystallization efficiency of edible salt.

[0023] In some embodiments, the concentration tank 1 has a first tank bottom 11, which includes a first tank body 111 and a glass cover 112. The first tank body 111 and the glass cover 112 are detachably connected to enclose a first placement cavity, in which the solar panel 3 is disposed. Using the glass cover 112 to separate the solar panel 3 from the brine can prevent the brine from corroding the solar panel 3, thereby extending the service life of the solar panel 3.

[0024] In this embodiment, the first tank 111 is preferably made of heat-insulating material to reduce heat dissipation, allowing as much of the heat generated by the solar panel 3 during power generation as possible to pass through the glass cover 112 and be absorbed by the brine, promoting the evaporation and concentration of the brine. Therefore, it is easy to understand that the glass cover 112 is transparent and, while meeting structural strength requirements, should be as thin as possible to reduce thermal resistance and promote the absorption of heat generated by the solar panel 3 by the brine.

[0025] Based on the above embodiments, the first placement cavity is filled with transparent thermally conductive silicone. The transparent thermally conductive silicone can fill the gap between the glass cover plate 112 and the solar panel 3, promote heat transfer, and at the same time will not have a significant adverse effect on the power generation of the solar panel 3.

[0026] Based on the above embodiments, the concentration tank 1 also has a transparent first side plate 12, which is fixed to the edge of the glass cover plate 112 to form an open trough-shaped structure with the glass cover plate 112 for containing brine.

[0027] In some embodiments, the crystallization tank 2 has a second tank bottom 21, which includes a second tank body 211 and a heat-conducting cover plate 212. The second tank body 211 and the heat-conducting cover plate 212 are detachably connected to enclose a second placement cavity. The electric heater 4 is disposed in the second placement cavity and is connected to the heat-conducting cover plate 212 for heat conduction.

[0028] In this embodiment, the second tank 211 is preferably made of heat-insulating material, and the heat-conducting cover plate 212 is made of a material with good thermal conductivity, such as metal, so that as much heat generated by the electric heater 4 is transferred to the brine in the crystallization tank 2, thereby improving the energy utilization rate.

[0029] In some embodiments, the crystallization tank 2 also has a transparent second side plate 22, which is fixed to the edge of the heat-conducting cover plate 212 to form an open groove structure with the heat-conducting cover plate 212.

[0030] In some embodiments, the second tank bottom 21 is set at a lower height than the first tank bottom 11, and the concentration tank 1 and the crystallization tank 2 are connected by a guide pipe 5, on which a first valve 51 is provided. When the first valve 51 is opened, the brine in the concentration tank 1 can spontaneously flow into the crystallization tank 2.

[0031] In some embodiments, the high-efficiency evaporation equipment for producing edible salt further includes a supply tank 6, which is connected to the concentration tank 1 and used to supply brine to the concentration tank 1. The supply tank 6 can be filled with brine that has undergone impurity removal treatment or brine that has not undergone impurity removal treatment. The supply tank 6 can be positioned above the concentration tank 1, and the supply of brine to the concentration tank 1 can be controlled by a second valve 61. In other embodiments, a water pump can also be used to supply brine to the concentration tank 1.

[0032] In some embodiments, the high-efficiency evaporation equipment for producing edible salt further includes multiple temperature sensors 7 and a controller 8. The probes of the multiple temperature sensors 7 are evenly distributed in the crystallization tank 2. Setting multiple temperature sensors 7 can measure the temperature of different areas in the crystallization tank 2 and avoid local overheating.

[0033] Temperature sensor 7 is connected to controller 8, and controller 8 is connected to first valve 51 and liquid supply tank 6. In this embodiment, it is connected to second valve 61. Controller 8 can control the opening or closing state of first valve 51 and second valve 61.

[0034] When the detected values ​​of several temperature sensors 7 reach a threshold, the controller 8 is triggered. It's easy to understand that the heat generated by the electric heater 4 evaporates the brine in the crystallization tank 2. When there is still water in the crystallization tank 2, the temperature of the brine will not exceed its boiling point, which is approximately 108°C. However, when all the water has evaporated and the salt exists in a crystalline solid form, the temperature will rise even higher. To avoid wasting heat, brine needs to be added to the crystallization tank 2. Therefore, this threshold should be slightly higher than 108°C, such as 110°C or 115°C.

[0035] Furthermore, it is not necessary for all temperature sensors 7 to detect temperature values ​​that reach the threshold. It can be set so that the controller 8 is triggered as long as a portion of the temperature sensors 7, such as 5, 3, or even 1 temperature sensor 7, detect temperature values ​​that reach the threshold.

[0036] The controller 8 controls the opening of the first valve 51 for a preset time, which is sufficient for almost all the brine in the concentration tank 1 to flow into the crystallization tank 2. Then, the first valve 51 is closed, and the controller then controls the opening of the supply tank 6, i.e., the second valve 61, for a preset time, so that the supply tank 6 replenishes a certain amount of brine into the concentration tank 1. The controller 8 has a built-in timer, which can realize the timed opening and closing of the valves and the delayed opening of the second valve 61 relative to the first valve 51.

[0037] Furthermore, it's easy to understand that the surface area of ​​the concentration tank 1 is much larger than that of the crystallization tank 2. On one hand, the natural evaporation concentration efficiency of the concentration tank 1 is very low, requiring a larger area to compensate. On the other hand, a sufficiently large solar panel 3 is needed to generate enough electrically powered heaters 4 to evaporate and crystallize all the brine in the crystallization tank 2. Therefore, those skilled in the art can flexibly select the dimensions of the concentration tank 1 and the crystallization tank 2 according to the actual sunlight conditions to ensure that their operating states are matched as closely as possible. This ensures that when the brine in the crystallization tank 2 evaporates and crystallizes, triggering the controller 8 to open the first valve 51, the brine concentration in the concentration tank 1 is as close to the saturation value as possible, but without salt crystallization occurring within the concentration tank 1.

[0038] In some embodiments, this high-efficiency evaporation equipment for producing edible salt further includes a storage battery 9, with the solar panel 3 electrically connected to the storage battery 9, and the storage battery 9 electrically connected to the electric heater 4. The storage battery 9 serves to store and manage electrical energy. The storage battery 9 is also connected to and supplies power to other electrical components of this high-efficiency evaporation equipment, such as the temperature sensor 7 and the controller 8. Necessary electrical control equipment is also provided in the circuit to ensure that all electrical components of this high-efficiency evaporation equipment can operate normally.

[0039] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A high-efficiency evaporation device for producing edible salt, characterized in that, include: A concentration tank, with solar panels laid on the bottom; A crystallization tank, with an electric heater installed at the bottom of the tank, and the solar panel is connected to and supplies power to the electric heater; The concentration tank and the crystallization tank are connected so that the brine in the concentration tank flows into the crystallization tank.

2. The high-efficiency evaporation equipment for producing edible salt according to claim 1, characterized in that, The concentration tank has a first tank bottom, which includes a first tank body and a glass cover plate. The first tank body and the glass cover plate are detachably connected to enclose a first placement cavity, and the solar panel is disposed in the first placement cavity.

3. The high-efficiency evaporation equipment for producing edible salt according to claim 2, characterized in that, The first placement cavity is filled with transparent thermally conductive silicone to conduct heat to the glass cover.

4. The high-efficiency evaporation equipment for producing edible salt according to claim 2, characterized in that, The concentration tank also has a transparent first side plate, which is fixed to the edge of the glass cover to form an open trough-shaped structure with the glass cover.

5. The high-efficiency evaporation equipment for producing edible salt according to claim 2, characterized in that, The crystallization tank has a second tank bottom, which includes a second tank body and a heat-conducting cover plate. The second tank body and the heat-conducting cover plate are detachably connected to enclose a second placement cavity. The electric heater is disposed in the second placement cavity and connected to the heat-conducting cover plate for heat conduction.

6. The high-efficiency evaporation equipment for producing edible salt according to claim 5, characterized in that, The crystallization tank also has a transparent second side plate, which is fixed to the edge of the heat-conducting cover plate to form an open groove structure with the heat-conducting cover plate.

7. The high-efficiency evaporation equipment for producing edible salt according to claim 5, characterized in that, The bottom of the second tank is lower than the bottom of the first tank. The concentration tank and the crystallization tank are connected by a guide pipe, and a first valve is provided on the guide pipe. When the first valve is opened, the brine in the concentration tank can flow into the crystallization tank spontaneously.

8. The high-efficiency evaporation equipment for producing edible salt according to claim 7, characterized in that, It also includes a supply tank, which is connected to the concentration tank to supply brine into the concentration tank.

9. The high-efficiency evaporation equipment for producing edible salt according to claim 8, characterized in that, It also includes multiple temperature sensors and a controller. The probes of the multiple temperature sensors are evenly distributed in the crystallization tank. The temperature sensors are connected to the controller, and the controller is connected to the first valve and the supply tank. When the detection values ​​of several of the temperature sensors reach a threshold, the controller can control the first valve to open for a preset time, so that the brine in the concentration tank flows into the crystallization tank. Then, it controls the first valve to close and controls the supply tank to open for a preset time, so that the brine in the supply tank flows into the concentration tank.

10. The high-efficiency evaporation equipment for producing edible salt according to claim 1, characterized in that, It also includes a storage battery, the solar panel is electrically connected to the storage battery, and the storage battery is electrically connected to the electric heater.

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