Evaporator for concentrating a cuprous cyanide solution

Abstract

The new type relates to the technical field of evaporators, and discloses a kind of evaporator for concentrating cuprous cyanide solution, including evaporation chamber, the liquid level in liquid level display tube is consistent with the liquid level in evaporation chamber, when the solution liquid level rises to the upper limit position or drops to the lower limit position during evaporation, the sensor at the corresponding position detects that the liquid level reaches the preset warning point in real time, and immediately sends an electric signal to the PLC controller, after the PLC controller system receives the signal, triggers the corresponding buzzer to issue an audible and light alarm signal, prompts the operator to take timely control measures, prevents the cuprous cyanide solution that is not fully vaporized from entering the condenser with solvent vapor, avoids pollution of the solvent recovery liquid, reduces the loss of target material, ensures the purity and yield of the concentrated solution, in addition, can avoid dry burning of the heating element in the heating chamber exposed to air, protects the core heating component, reduces the equipment maintenance frequency, and ensures the overall service life of the single-effect external circulation evaporator.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, and in particular to an evaporator for concentrating cuprous cyanide solution. Background Technology

[0002] In the field of fine chemical production, cuprous cyanide is an important electroplating raw material and organic synthesis intermediate. Its solution concentration process is crucial to product quality and production safety. As the core equipment for realizing solution concentration, the evaporator plays a key role in removing solvent and increasing solution concentration in the process of cuprous cyanide solution treatment.

[0003] Single-effect external circulation evaporators are commonly used in scenarios such as solution concentration and wastewater treatment. The main body of the equipment includes a heating chamber, an evaporation separation chamber, and a condenser. The solution is heated to boil and vaporize, and then the solvent is recovered by condensation, thereby achieving material concentration.

[0004] In the actual operation of cuprous cyanide solution concentration, the solution level in the evaporation chamber is a key parameter that determines the safety and stability of the process. If the liquid level is too high, the unvaporized solution will enter the condenser with the solvent vapor, causing contamination of the solvent recovery liquid and loss of the target material, and may even block the condensation pipe and cause a sudden increase in system pressure. If the liquid level is too low, the heating element in the heating chamber will be exposed to the air, resulting in dry burning, which will quickly damage the heating element and shorten the service life of the equipment. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an evaporator for concentrating cuprous cyanide solution. It solves the problem that the solution level in the evaporation chamber is a key parameter determining the safety and stability of the process. If the liquid level is too high, the incompletely vaporized solution will enter the condenser with the solvent vapor, causing contamination of the solvent recovery liquid and loss of the target material, and may even block the condensation pipe, causing a sudden increase in system pressure. If the liquid level is too low, the heating element in the heating chamber will be exposed to the air, resulting in dry burning, rapid damage to the heating element, and shortened equipment lifespan.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An evaporator for concentrating cuprous cyanide solution includes an evaporation chamber. An external measuring mechanism for measuring the amount of cuprous cyanide solution is provided outside the evaporation chamber. The measuring mechanism includes an upper connecting pipe, a lower connecting pipe, and a liquid level display tube. The upper connecting pipe is fixedly installed at the upper end of the evaporation chamber, and the lower connecting pipe is fixedly installed at the lower end of the evaporation chamber. Both the upper and lower connecting pipes communicate with the interior of the evaporation chamber. The two ends of the liquid level display tube are fixedly installed outside the upper and lower connecting pipes, respectively, and both are connected to the upper and lower connecting pipes. An early warning component for liquid level warning is provided outside the evaporation chamber. The early warning component includes a base, a buzzer, a PLC controller, and a sensor.

[0007] Preferred configuration: The base is placed below the evaporation chamber. There are two buzzers, which are located at both ends of the base. The PLC controller is placed on the upper surface of the base. Both buzzers are electrically connected to the PLC controller. There are two sensors, which are respectively clipped onto the upper and lower ends of the liquid level display tube. Both sensors are electrically connected to the PLC controller.

[0008] Preferably, positioning frames are fixedly installed at both ends of the base, the buzzer is slidably connected to the inner side of the positioning frame, each positioning frame has a threaded hole on the outer side, each threaded hole is threadedly connected to a limit screw, and a rubber pad is fixedly installed at the end of each limit screw.

[0009] Preferably, a protective cover is slidably connected to the outside of the base, a cable port is provided on the outside of the protective cover, a fixing frame is fixedly installed on the outside of the base, a fixing plate is slidably connected to the inside of the fixing frame, and the fixing plate is fixedly installed on the outside of the protective cover.

[0010] Compared with the prior art, the present invention has the following beneficial effects: Because the liquid level display tube is connected to the interior of the evaporation chamber, the liquid level in the display tube is consistent with the liquid level in the evaporation chamber. When the solution level rises to the upper limit or falls to the lower limit during evaporation, the corresponding sensor detects the liquid level reaching the preset warning point in real time through optical or electromagnetic induction principles, and immediately sends an electrical signal to the integrated control unit PLC controller. After receiving the signal, the PLC controller system processes it through preset program logic and triggers the corresponding buzzer to issue an audible and visual alarm signal, prompting the operator to take timely control measures such as replenishing liquid or stopping evaporation. This prevents the insufficiently vaporized cuprous cyanide solution from entering the condenser with the solvent vapor, avoiding contamination of the solvent recovery liquid and reducing the loss of the target material, ensuring the purity and yield of the concentrated solution. In addition, it can prevent the heating element in the heating chamber from being exposed to the air and burning dry, protecting the core heating components, reducing the frequency of equipment maintenance, and ensuring the overall service life of the single-effect external circulation evaporator. Attached Figure Description

[0011] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Structural diagram of the central abutment; Figure 3 This utility model Figure 2Exploded view of the positioning frame; Figure 4 This utility model Figure 2 A top-down view of the structure of the protective shield.

[0013] Legend: 1. Evaporation chamber; 2. Upper connecting pipe; 3. Lower connecting pipe; 4. Liquid level display tube; 5. Base; 6. Buzzer; 7. PLC controller; 8. Sensor; 9. Positioning frame; 10. Threaded hole; 11. Limit screw; 12. Rubber pad; 13. Protective cover; 14. Cable port; 15. Fixing frame; 16. Fixing plate. Detailed Implementation

[0014] This application provides an evaporator for concentrating cuprous cyanide solution, which effectively solves the technical problem that the solution level in the evaporation chamber is a key parameter that determines the safety and stability of the process. If the liquid level is too high, the incompletely vaporized solution will enter the condenser with the solvent vapor, causing contamination of the solvent recovery liquid and loss of the target material, and even blockage of the condensation pipe, causing a sudden increase in system pressure. If the liquid level is too low, the heating element in the heating chamber will be exposed to the air, resulting in dry burning, rapid damage to the heating element, and shortening the service life of the equipment.

[0015] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that the solution level in the evaporation chamber is a key parameter determining the safety and stability of the process. If the liquid level is too high, the incompletely vaporized solution will enter the condenser with the solvent vapor, causing solvent recovery liquid contamination and loss of target material, and even clogging the condensation pipe, causing a sudden increase in system pressure. If the liquid level is too low, the heating element in the heating chamber will be exposed to the air, resulting in dry burning, rapid damage to the heating element, and shortening the service life of the equipment. The overall approach is as follows: To address the problems existing in the prior art, this utility model provides an evaporator for concentrating cuprous cyanide solution, including an evaporation chamber 1. An external measuring mechanism for measuring the amount of cuprous cyanide solution is provided outside the evaporation chamber 1. The measuring mechanism includes an upper connecting pipe 2, a lower connecting pipe 3, and a liquid level display tube 4. The upper connecting pipe 2 is fixedly installed at the upper end of the evaporation chamber 1, and the lower connecting pipe 3 is fixedly installed at the lower end of the evaporation chamber 1. Both the upper connecting pipe 2 and the lower connecting pipe 3 communicate with the interior of the evaporation chamber 1. The two ends of the liquid level display tube 4 are fixedly installed outside the upper connecting pipe 2 and the lower connecting pipe 3, respectively. The liquid level display tube 4 is made of transparent material and equipped with high-precision scale markings, creating an intuitive liquid level observation interface. The liquid level display tube 4 is connected to both the upper connecting pipe 2 and the lower connecting pipe 3.

[0016] The exterior of the evaporation chamber 1 is equipped with a warning component for liquid level warning. The warning component includes a base 5, a buzzer 6, a PLC controller 7, and a sensor 8. The base 5 is placed below the evaporation chamber 1. There are two buzzers 6, which are located at both ends of the base 5. The two buzzers 6 use different colored lights to achieve rapid identification of the warning level and avoid human error. The PLC controller 7 is placed on the upper surface of the base 5. Both buzzers 6 are electrically connected to the PLC controller 7. There are two sensors 8, which are respectively clipped to the upper and lower ends of the liquid level display tube 4. Both sensors 8 are electrically connected to the PLC controller 7. The sensors 8 are non-contact liquid level sensors.

[0017] Positioning brackets 9 are fixedly installed at both ends of the base 5. The buzzer 6 is slidably connected to the inner side of the positioning bracket 9. Each positioning bracket 9 has a threaded hole 10 on its outer side. Each threaded hole 10 is threadedly connected to a limiting screw 11. A rubber pad 12 is fixedly installed at the end of each limiting screw 11. The limiting screw 11 rotates to abut against the buzzer 6, thereby fixing the buzzer 6. The rubber pad 12 avoids mechanical damage caused by direct rigid contact between the metal limiting screw 11 and the outer shell of the buzzer 6.

[0018] The base 5 is slidably connected to a protective cover 13, which is made of transparent material. The protective cover 13 has a cable port 14 on its outside. The cable port 14 is the channel for the cables used to electrically connect the sensors 8 to the PLC controller 7.

[0019] A fixing frame 15 is fixedly installed on the outside of the base 5, and a fixing plate 16 is slidably connected to the inside of the fixing frame 15. The fixing plate 16 is fixedly installed on the outside of the protective cover 13. Example

[0020] The solution enters the liquid level display tube 4 through the upper connecting tube 2 and the lower connecting tube 3. Since the liquid level display tube 4 is connected to the inside of the evaporation chamber 1, the liquid level in the liquid level display tube 4 is the same as the liquid level in the evaporation chamber 1. The liquid level can be clearly observed through the scale markings on the outside of the liquid level display tube 4. The operator can directly observe the liquid level of the solution in the evaporation chamber 1 through the transparent tube, providing a clear and visual reference for liquid level monitoring during the concentration process. Example

[0021] Sensors 8 are installed at key positions at the upper and lower ends of the liquid level display tube 4, respectively, to set two warning thresholds for the minimum and maximum safe liquid levels of the solution in the evaporation chamber 1. When the solution level rises to the upper limit or falls to the lower limit during evaporation, the corresponding sensor 8 detects the liquid level reaching the preset warning point in real time through optical or electromagnetic induction principles, and immediately sends an electrical signal to the integrated control unit PLC controller 7. After receiving the signal, the PLC controller 7 processes it through preset program logic and triggers the corresponding buzzer 6 on the base 5 to emit an audible and visual alarm signal. The two buzzers 6 can emit different colors of light to prompt the operator to take timely control measures such as replenishing liquid or stopping evaporation, preventing the insufficiently vaporized cuprous cyanide solution from entering the condenser with the solvent vapor. This avoids contamination of the solvent recovery liquid, reduces the loss of the target material, and ensures the purity and yield of the concentrated solution. In addition, it can prevent the heating element of the heating chamber from being exposed to the air and burning dry, protecting the core heating components, reducing the frequency of equipment maintenance, and ensuring the overall service life of the single-effect external circulation evaporator.

[0022] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An evaporator for concentrating cuprous cyanide solution, comprising an evaporation chamber (1), characterized in that, The evaporation chamber (1) is provided with a measuring mechanism for measuring the amount of cuprous cyanide solution. The measuring mechanism includes an upper connecting pipe (2), a lower connecting pipe (3), and a liquid level display tube (4). The upper connecting pipe (2) is fixedly installed at the upper end of the evaporation chamber (1), and the lower connecting pipe (3) is fixedly installed at the lower end of the evaporation chamber (1). Both the upper connecting pipe (2) and the lower connecting pipe (3) are connected to the interior of the evaporation chamber (1). The two ends of the liquid level display tube (4) are fixedly installed outside the upper connecting pipe (2) and the lower connecting pipe (3), respectively. Both ends of the liquid level display tube (4) are connected to the upper connecting pipe (2) and the lower connecting pipe (3). The evaporation chamber (1) is equipped with an early warning component for liquid level warning. The early warning component includes a base (5), a buzzer (6), a PLC controller (7), and a sensor (8).

2. The evaporator for concentrating cuprous cyanide solution as described in claim 1, characterized in that, The base (5) is placed below the evaporation chamber (1). There are two buzzers (6), which are located at both ends of the base (5). The PLC controller (7) is placed on the upper surface of the base (5). Both buzzers (6) are electrically connected to the PLC controller (7). There are two sensors (8), which are respectively clipped to the upper and lower ends of the liquid level display tube (4). Both sensors (8) are electrically connected to the PLC controller (7).

3. The evaporator for concentrating cuprous cyanide solution as described in claim 1, characterized in that, Positioning frames (9) are fixedly installed at both ends of the base (5); The buzzer (6) is slidably connected to the inside of the positioning frame (9).

4. An evaporator for concentrating cuprous cyanide solution as described in claim 3, characterized in that, Each of the positioning frames (9) has a threaded hole (10) on its outer side, and each threaded hole (10) is threadedly connected to a limit screw (11).

5. An evaporator for concentrating cuprous cyanide solution as described in claim 4, characterized in that, Each of the limiting screws (11) has a rubber pad (12) fixedly installed at its end.

6. The evaporator for concentrating cuprous cyanide solution as described in claim 1, characterized in that, The base (5) is externally slidably connected to a protective cover (13).

7. An evaporator for concentrating cuprous cyanide solution as described in claim 6, characterized in that, The protective cover (13) has a cable port (14) on its outside.

8. An evaporator for concentrating cuprous cyanide solution as described in claim 1, characterized in that, A fixing frame (15) is fixedly installed on the outside of the base (5), and a fixing plate (16) is slidably connected to the inside of the fixing frame (15). The fixing plate (16) is fixedly installed on the outside of the protective cover (13).

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