A zinc sulfate evaporation device

Abstract

The application discloses a zinc sulfate evaporation device, which comprises an evaporator body and a shell, wherein a cavity is arranged between the shell and the evaporator body, an air inlet pipe is arranged at the upper end of the shell, an air pressure adjusting device is arranged in the cavity, the air pressure adjusting device comprises a moving block, a baffle, a spring, an upper slide rail and a lower slide rail, the moving block slides left and right between the upper slide rail and the lower slide rail, the baffle is used for dividing the cavity into a first cavity and a second cavity, a connecting pipe is arranged at the upper end of the shell, the first cavity and the second cavity are communicated with each other through the connecting pipe, and an air inlet is arranged on the upper and lower surfaces of the upper slide rail. The air pressure adjusting device can dynamically adjust the opening and closing of the air inlet according to the air pressure difference between the first cavity and the second cavity, so that the inflow amount of hot air is controlled, and the effective evaporation of the zinc sulfate liquid is ensured.

Description

Technical Field

[0001] This invention relates to the field of zinc sulfate production technology, specifically to a zinc sulfate evaporation device. Background Technology

[0002] Zinc sulfate is an important inorganic compound widely used in electroplating, metallurgy, chemical industry, pigments, agriculture, and other fields. There are two main production methods for zinc sulfate: the wet process and the dry process. The wet process involves reacting sulfuric acid with zinc or zinc minerals to obtain a zinc sulfate solution, which is then evaporated and crystallized to obtain the solid zinc sulfate product.

[0003] To produce zinc sulfate, the zinc sulfate solution needs to be evaporated and crystallized to remove the water and reach a supersaturated state, which in turn causes the solute to precipitate in crystal form. Existing zinc sulfate solution evaporation often uses hot gas, but the current process cannot guarantee that the zinc sulfate solution will be evaporated and crystallized at a constant temperature. As a result, the solution is subjected to different degrees of heating and cooling, which affects the supersaturation and crystallization rate of the solution. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing processes cannot guarantee that zinc sulfate solution will be evaporated and crystallized at a constant temperature, resulting in the solution being heated and cooled to varying degrees, which affects the supersaturation and crystallization rate of the solution. Therefore, this invention provides a zinc sulfate evaporation device.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] This invention provides a zinc sulfate evaporation apparatus.

[0007] The device includes an evaporator body and a housing. The evaporator body is disposed inside the housing, and there is a cavity between the housing and the evaporator body. An air inlet pipe is provided at the upper end of the housing, and hot air is introduced into the cavity through the air inlet pipe. The evaporator body stores zinc sulfate liquid to be evaporated, and the hot air in the cavity is used to evaporate the zinc sulfate liquid in the evaporator body.

[0008] A pressure regulating device is installed inside the cavity. The pressure regulating device includes a slide rail, a moving block, a baffle, and a spring. The slide rail includes an upper slide rail and a lower slide rail. The upper slide rail is disposed on the upper inner wall of the housing, and the lower slide rail is disposed on the upper end of the evaporator body. The upper end of the moving block is slidably connected to the upper slide rail, and the lower end of the moving block is slidably connected to the lower slide rail. The moving block slides left and right between the upper and lower slide rails. The upper end of the baffle is connected to the upper inner wall of the housing, and the lower end of the baffle is connected to the upper end of the evaporator body. The baffle is used to divide the cavity into a first cavity and a second cavity. A first cavity is formed between the right surface of the baffle and the left surface of the movable block, and a second cavity is formed between the left surface of the baffle and the right surface of the movable block. A connecting pipe is provided at the upper end of the housing. One end of the connecting pipe passes through the side wall of the housing and communicates with the first cavity, and the other end of the connecting pipe passes through the side wall of the housing and communicates with the second cavity. The first cavity and the second cavity are interconnected through the connecting pipe. An air inlet is provided through the upper and lower surfaces of the upper slide rail. The air inlet is connected to the air inlet pipe. Hot air enters the first cavity through the air inlet via the air inlet pipe and then enters the second cavity through the connecting pipe.

[0009] One end of the spring is connected to the right surface of the baffle, and the other end of the spring is connected to the left surface of the moving block. The deformation of the spring is used to drive the moving block to slide left and right along the upper slide rail and the lower slide rail.

[0010] Optionally, when the pressure in the first cavity is the same as the pressure in the second cavity, the spring is not under pressure and is in a normal state. At this time, the upper surface of the moving block seals the air inlet, and the hot air in the air inlet pipe stops flowing in.

[0011] After the hot gas in the second cavity evaporates the zinc sulfate liquid in the evaporator body for a period of time, the temperature of the hot gas in the second cavity decreases. At this time, the gas pressure in the first cavity is greater than the gas pressure in the second cavity. The gas in the first cavity pushes the moving block to move to the right along the upper slide rail and the lower slide rail. During the movement of the moving block to the right, the air inlet is gradually opened until it is fully opened. The hot gas enters the first cavity through the air inlet via the air inlet pipe and then enters the second cavity through the connecting pipe.

[0012] As hot air is gradually introduced into the second cavity, the gas pressure gradually increases until the gas pressure in the second cavity is the same as that in the first cavity. At this time, the spring resets itself and drives the moving block to move to the left along the upper slide rail and the lower slide rail. During the leftward movement of the moving block, the air inlet is gradually closed until it is completely closed.

[0013] Optionally, a heating device is provided on one side of the housing, and an air outlet pipe is provided at the lower end of the housing. The air outlet pipe is connected to the second cavity, and the air outlet pipe is connected to the feed inlet of the heating device through a pipe. The air inlet pipe is connected to the discharge outlet of the heating device through a pipe.

[0014] Optionally, a controller is provided on one side of the housing, a first solenoid valve is provided on the air inlet pipe, a second solenoid valve is provided on the air outlet pipe, and a third solenoid valve is provided on the connecting pipe. The first, second, and third solenoid valves are all electrically connected to the controller, and the controller is used to control the opening and closing of the first, second, and third solenoid valves.

[0015] Optionally, a button is provided on the upper slide rail, the button is located on the right side of the air inlet, and the button is electrically connected to the controller;

[0016] When the moving block touches the button during its rightward movement, the button transmits a connection signal to the controller. The controller then controls the first, second, and third solenoid valves to open synchronously, thereby circulating the gas in the first and second cavities and ensuring the evaporation efficiency of zinc sulfate.

[0017] When the spring returns to its original position, it causes the moving block to move to the left, thus preventing the moving block from contacting the button.

[0018] The button transmits a closing signal to the controller, which then controls the first, second, and third solenoid valves to close synchronously.

[0019] Optionally, the cross-section of the air inlet is set to a circular structure, or the cross-section of the air inlet is set to a rectangular structure.

[0020] Optionally, a fan is provided in the second cavity to accelerate the flow of gas in the second cavity.

[0021] Optionally, the upper slide rail and the lower slide rail are arranged parallel to each other vertically and symmetrically along the horizontal axis of the moving block.

[0022] Optionally, the surface of the button is provided with a protective layer for protecting the button.

[0023] Beneficial effects of the invention

[0024] This application provides a zinc sulfate multi-effect evaporation device, which has a gas pressure regulating device that can dynamically adjust the opening and closing of the air inlet according to the gas pressure difference in the first cavity and the second cavity, thereby controlling the amount of hot gas introduced and ensuring the effective evaporation of zinc sulfate liquid. This can avoid the solution being overheated or overcooled due to excessive or insufficient gas intake, which would affect the supersaturation and crystallization rate of the solution. At the same time, it can also save the consumption of hot gas and improve the energy utilization rate.

[0025] This application provides a zinc sulfate multi-effect evaporation device, which has a controller and a solenoid valve. It can control the gas circulation in the first and second cavities according to the button signal, thereby improving the evaporation efficiency of zinc sulfate. This allows evaporation and crystallization to be carried out under constant temperature conditions, so that the solution maintains the same temperature and pressure at all times, thereby improving the supersaturation and crystallization rate of the solution. At the same time, it can also reduce gas loss and emission, and reduce environmental pollution.

[0026] This application provides a zinc sulfate multi-effect evaporation device, which has a heating device that can reheat the cooling gas in the outlet pipe to recover heat energy and reduce energy consumption. In this way, the cooling gas in the outlet pipe can be used as the raw material for the heating device, and after being reheated, it is returned to the inlet pipe, thereby realizing the recycling of heat energy, reducing the input of external heat sources, and reducing operating costs. Attached Figure Description

[0027] Figure 1 This is the main view of the structure of the present invention.

[0028] Figure 2 This is a cross-sectional view of the structure of the present invention.

[0029] Figure 3 This is a top view of the structure of the present invention.

[0030] Figure 4 This is a cross-sectional view of the upper slide rail structure of the present invention.

[0031] Figure 5 This is a bottom view of the upper slide rail structure of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1-Shell, 2-Evaporator body, 3-Inlet pipe, 4-Upper slide rail, 5-Lower slide rail, 6-Moving block, 7-Baffle, 8-Spring, 9-First cavity, 10-Second cavity, 11-Connecting pipe, 12-Inlet, 13-Heating device, 14-First solenoid valve, 15-Second solenoid valve, 16-Third solenoid valve, 17-Button, 18-Fan, 19-Outlet pipe. Detailed Implementation

[0033] 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.

[0034] Example

[0035] like Figures 1-5 As shown, the present invention provides a zinc sulfate evaporation apparatus.

[0036] The device includes an evaporator body 2 and a housing 1. The evaporator body 2 is disposed inside the housing 1, and there is a cavity between the housing 1 and the evaporator body 2. An air inlet pipe 3 is provided at the upper end of the housing 1, and hot air is introduced into the cavity through the air inlet pipe 3. The evaporator body 2 stores zinc sulfate liquid to be evaporated, and the hot air in the cavity is used to evaporate the zinc sulfate liquid in the evaporator body 2.

[0037] A pressure regulating device is installed inside the cavity. The pressure regulating device includes a slide rail, a moving block 6, a baffle 7, and a spring 8. The slide rail includes an upper slide rail 4 and a lower slide rail 5. The upper slide rail 4 is disposed on the upper inner wall of the housing 1, and the lower slide rail 5 is disposed on the upper end of the evaporator body 2. The upper slide rail 4 and the lower slide rail 5 are arranged parallel vertically and symmetrically along the horizontal axis of the moving block 6. The upper end of the moving block 6 is slidably connected to the upper slide rail 4, and the lower end of the moving block 6 is slidably connected to the lower slide rail 5. The moving block 6 slides left and right between the upper slide rail 4 and the lower slide rail 5. The upper end of the baffle 7 is connected to the upper inner wall of the housing 1, and the lower end of the baffle 7 is connected to the upper end of the evaporator body 2. The baffle 7 is used to divide the cavity into a first cavity 9. The second cavity 10 is formed between the right surface of the baffle 7 and the left surface of the moving block 6, forming the first cavity 9. The second cavity 10 is formed between the left surface of the baffle 7 and the right surface of the moving block 6. A connecting pipe 11 is provided at the upper end of the housing 1. One end of the connecting pipe 11 passes through the side wall of the housing 1 and communicates with the first cavity 9. The other end of the connecting pipe 11 passes through the side wall of the housing 1 and communicates with the second cavity 10. The first cavity 9 and the second cavity 10 are interconnected through the connecting pipe 11. An air inlet 12 is provided through the upper and lower surfaces of the upper slide rail 4. The air inlet 12 is connected to the air inlet pipe 3. Hot air is introduced into the first cavity 9 through the air inlet 12 via the air inlet pipe 3, and then into the second cavity 10 through the connecting pipe 11.

[0038] One end of the spring 8 is connected to the right surface of the baffle 7, and the other end of the spring 8 is connected to the left surface of the moving block 6. The deformation of the spring 8 is used to drive the moving block 6 to slide left and right between the upper slide rail 4 and the lower slide rail 5.

[0039] A heating device 13 is provided on one side of the housing 1, and an air outlet pipe 19 is provided at the lower end of the housing 1. The air outlet pipe 19 is connected to the second cavity 10. The air outlet pipe 19 is connected to the feed inlet of the heating device 13 through a pipe. The air inlet pipe 3 is connected to the discharge outlet of the heating device 13 through a pipe.

[0040] A controller is provided on one side of the housing 1. A first solenoid valve 14 is provided on the air inlet pipe 3. A second solenoid valve 15 is provided on the air outlet pipe 19. A third solenoid valve 16 is provided on the connecting pipe 11. The first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16 are all electrically connected to the controller. The controller is used to control the opening and closing of the first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16.

[0041] A button 17 is provided on the upper slide rail 4. The button 17 is located on the right side of the air inlet 12. The button 17 is electrically connected to the controller.

[0042] When the moving block 6 touches the button 17 during its rightward movement, the button 17 transmits a connection signal to the controller. The controller then controls the first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16 to open synchronously, thereby circulating the gas in the first cavity 9 and the second cavity 10, thus ensuring the evaporation efficiency of zinc sulfate.

[0043] When the spring 8 returns to its original position, it causes the moving block 6 to move to the left, thus preventing the moving block 6 from contacting the button 17.

[0044] The button 17 transmits a closing signal to the controller, which controls the first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16 to close synchronously.

[0045] In the process of using this invention, firstly, before starting, the zinc sulfate liquid to be evaporated is introduced into the evaporator body 2, and the heating device 13 is turned on to preheat it; it should be noted that the introduction process is not specifically described. In this embodiment, it is introduced through a pipe, but it is not limited to this and can be set according to actual needs.

[0046] Then, the controller opens the first solenoid valve 14 and the third solenoid valve 16, allowing hot air to enter the first cavity 9 through the air inlet 12 via the air inlet pipe 3, and then through the connecting pipe 11 into the second cavity 10, thereby filling the first cavity 9 and the second cavity 10 with hot air. After filling for a period of time, the controller closes the first solenoid valve 14 and the third solenoid valve 16, and the hot air in the second cavity 10 heats the evaporator body 2, thereby starting the evaporation operation of the zinc sulfate liquid in the evaporator body 2.

[0047] Because the hot gas in the second cavity 10 continuously heats the evaporator body 2, its temperature decreases after a period of time, which in turn reduces its gas pressure.

[0048] After the hot gas in the second cavity 10 evaporates the zinc sulfate liquid in the evaporator body 2 for a period of time, the temperature of the hot gas in the second cavity 10 decreases. At this time, the gas pressure in the first cavity 9 is greater than the gas pressure in the second cavity 10. The gas in the first cavity 9 pushes the moving block 6 to move to the right along the upper slide rail 4 and the lower slide rail 5. During the rightward movement of the moving block 6, the air inlet 12 is gradually opened until it is fully opened. The hot gas enters the first cavity 9 through the air inlet 12 via the air inlet pipe 3, and then enters the second cavity 10 through the connecting pipe 11. As hot air is gradually introduced into the second cavity 10, the gas pressure gradually increases until the gas pressure in the second cavity 10 is the same as the gas pressure in the first cavity 9. At this time, the spring 8 resets itself and drives the moving block 6 to move to the left along the upper slide rail 4 and the lower slide rail 5. During the leftward movement of the moving block 6, the air inlet 12 is gradually closed until it is completely closed. At this time, the pressure in the first cavity 9 is the same as the pressure in the second cavity 10. The spring 8 is not under pressure and is in a normal state. At this time, the upper surface of the moving block 6 seals the air inlet, and the hot air in the air inlet pipe 3 stops flowing in.

[0049] During the left and right sliding process of the moving block 6, when the moving block 6 touches the button 17 during the right movement, the button 17 transmits the connection signal to the controller. The controller controls the first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16 to open synchronously, thereby circulating the gas in the first cavity 9 and the second cavity 10, thus ensuring the evaporation efficiency of zinc sulfate.

[0050] Finally, when the spring 8 returns to its original position and moves the moving block 6 to the left, so that the moving block 6 is no longer in contact with the button 17, the button 17 transmits a closing signal to the controller, and the controller controls the first solenoid valve 14, the second solenoid valve 15, and the third solenoid valve 16 to close synchronously.

[0051] The cross-section of the air inlet 12 is set to a circular structure, or the cross-section of the air inlet 12 is set to a rectangular structure. In this embodiment, the cross-section of the air inlet 12 is set to a circular structure, but it is not limited to this and can be set according to actual needs.

[0052] This application provides a zinc sulfate multi-effect evaporation device, which has a gas pressure regulating device. It can dynamically adjust the opening and closing of the air inlet 12 according to the gas pressure difference in the first cavity 9 and the second cavity 10, thereby controlling the amount of hot gas introduced and ensuring the effective evaporation of zinc sulfate liquid. This can avoid the solution being overheated or overcooled due to excessive or insufficient gas intake, which would affect the supersaturation and crystallization rate of the solution. At the same time, it can also save the consumption of hot gas and improve the energy utilization rate.

[0053] This application provides a zinc sulfate multi-effect evaporation device, which has a controller and a solenoid valve. It can control the gas circulation in the first cavity 9 and the second cavity 10 according to the signal of button 17, thereby improving the evaporation efficiency of zinc sulfate. This allows evaporation and crystallization to be carried out under constant temperature conditions, so that the solution maintains the same temperature and pressure at every moment, thereby improving the supersaturation and crystallization rate of the solution. At the same time, it can also reduce gas loss and emission, and reduce environmental pollution.

[0054] This application provides a zinc sulfate multi-effect evaporation device, which has a heating device 13 that can reheat the cooling gas in the outlet pipe 19 to recover heat energy and reduce energy consumption. In this way, the cooling gas in the outlet pipe 19 can be used as the raw material of the heating device 13, and after being reheated, it is returned to the inlet pipe 3, thereby realizing the recycling of heat energy, reducing the input of external heat sources, and reducing operating costs.

[0055] A fan 18 is provided inside the second cavity 10. The fan 18 is used to accelerate the flow of gas inside the second cavity 10. This application provides a zinc sulfate multi-effect evaporation device, which has a fan 18, which can accelerate the flow of gas inside the second cavity 10 and promote heat transfer. This can enhance the convective heat transfer effect between the gas inside the second cavity 10 and the liquid inside the evaporator body 2, so that the solution can reach a supersaturated state more quickly and promote the precipitation and growth of crystals.

[0056] A protective layer is provided on the surface of the button 17 to protect it. This application provides a zinc sulfate multi-effect evaporation device with a protective layer to protect the button 17 and extend its service life. This can prevent the button 17 from being damaged or aged due to long-term exposure to harsh environments such as high temperature, high pressure, and high humidity, which would affect signal transmission and controller operation. It can also reduce the frequency and cost of maintenance and replacement.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A zinc sulfate evaporation apparatus, characterized in that, The device includes an evaporator body and a housing. The evaporator body is disposed inside the housing, and there is a cavity between the housing and the evaporator body. An air inlet pipe is provided at the upper end of the housing, and hot air is introduced into the cavity through the air inlet pipe. The evaporator body stores zinc sulfate liquid to be evaporated, and the hot air in the cavity is used to evaporate the zinc sulfate liquid in the evaporator body. A pressure regulating device is installed inside the cavity. The pressure regulating device includes a slide rail, a moving block, a baffle, and a spring. The slide rail includes an upper slide rail and a lower slide rail. The upper slide rail is disposed on the upper inner wall of the housing, and the lower slide rail is disposed on the upper end of the evaporator body. The upper end of the moving block is slidably connected to the upper slide rail, and the lower end of the moving block is slidably connected to the lower slide rail. The moving block slides left and right between the upper and lower slide rails. The upper end of the baffle is connected to the upper inner wall of the housing, and the lower end of the baffle is connected to the upper end of the evaporator body. The baffle is used to divide the cavity into a first cavity and a second cavity. A first cavity is formed between the right surface of the baffle and the left surface of the movable block, and a second cavity is formed between the left surface of the baffle and the right surface of the movable block. A connecting pipe is provided at the upper end of the housing. One end of the connecting pipe passes through the side wall of the housing and communicates with the first cavity, and the other end of the connecting pipe passes through the side wall of the housing and communicates with the second cavity. The first cavity and the second cavity are interconnected through the connecting pipe. An air inlet is provided through the upper and lower surfaces of the upper slide rail. The air inlet is connected to the air inlet pipe. Hot air enters the first cavity through the air inlet via the air inlet pipe and then enters the second cavity through the connecting pipe. One end of the spring is connected to the right surface of the baffle, and the other end of the spring is connected to the left surface of the moving block. The deformation of the spring is used to drive the moving block to slide left and right along the upper slide rail and the lower slide rail.

2. The zinc sulfate evaporation apparatus according to claim 1, characterized in that, When the pressure in the first cavity is the same as the pressure in the second cavity, the spring is not under pressure and is in a normal state. At this time, the upper surface of the moving block seals the air inlet, and the hot air in the air inlet pipe stops flowing in. After the hot gas in the second cavity evaporates the zinc sulfate liquid in the evaporator body for a period of time, the temperature of the hot gas in the second cavity decreases. At this time, the gas pressure in the first cavity is greater than the gas pressure in the second cavity. The gas in the first cavity pushes the moving block to move to the right along the upper slide rail and the lower slide rail. During the movement of the moving block to the right, the air inlet is gradually opened until it is fully opened. The hot gas enters the first cavity through the air inlet via the air inlet pipe and then enters the second cavity through the connecting pipe. As hot air is gradually introduced into the second cavity, the gas pressure gradually increases until the gas pressure in the second cavity is the same as that in the first cavity. At this time, the spring resets itself and drives the moving block to move to the left along the upper slide rail and the lower slide rail. During the leftward movement of the moving block, the air inlet is gradually closed until it is completely closed.

3. The zinc sulfate evaporation apparatus according to claim 1, characterized in that, A heating device is provided on one side of the housing, and an air outlet pipe is provided at the lower end of the housing. The air outlet pipe is connected to the second cavity, and the air outlet pipe is connected to the feed inlet of the heating device through a pipe. The air inlet pipe is connected to the discharge outlet of the heating device through a pipe.

4. The zinc sulfate evaporation apparatus according to claim 3, characterized in that, A controller is provided on one side of the housing. A first solenoid valve is provided on the air inlet pipe, a second solenoid valve is provided on the air outlet pipe, and a third solenoid valve is provided on the connecting pipe. The first, second, and third solenoid valves are all electrically connected to the controller, which is used to control the opening and closing of the first, second, and third solenoid valves.

5. The zinc sulfate evaporation apparatus according to claim 4, characterized in that, A button is provided on the upper slide rail, the button is located on the right side of the air inlet, and the button is electrically connected to the controller; When the moving block touches the button during its rightward movement, the button transmits a connection signal to the controller. The controller then controls the first, second, and third solenoid valves to open synchronously, thereby circulating the gas in the first and second cavities and ensuring the evaporation efficiency of zinc sulfate. When the spring returns to its original position, it causes the moving block to move to the left, thus preventing the moving block from contacting the button. The button transmits a closing signal to the controller, which then controls the first, second, and third solenoid valves to close synchronously.

6. The zinc sulfate evaporation apparatus according to claim 1, characterized in that, The cross-section of the air inlet is either circular or rectangular.

7. The zinc sulfate evaporation apparatus according to claim 1, characterized in that, A fan is installed inside the second cavity to accelerate the flow of gas inside the second cavity.

8. The zinc sulfate evaporation apparatus according to claim 1, characterized in that, The upper slide rail and the lower slide rail are arranged parallel to each other vertically and symmetrically along the horizontal axis of the moving block.

9. A zinc sulfate evaporation apparatus according to claim 5, characterized in that, The button has a protective layer on its surface to protect it.

Images