Low-temperature cold trap for preparing nickel oxide

Abstract

The utility model discloses a low-temperature cold trap for preparing nickel oxide, which relates to the technical field of low-temperature cold traps and comprises an equipment main body, a cooling liquid cavity is arranged at the upper end in the equipment main body, a spirally surrounding evaporator is arranged on the outer side of the cooling liquid cavity, and a tray is fixedly arranged at the bottom of the cooling liquid cavity. A container is arranged above the tray, a first stirrer is arranged at the bottom of an inner cavity of the container, a second stirrer is arranged below the tray, a top plate is arranged below the equipment body, supporting rods which are in sliding limiting with the equipment body are fixedly arranged on the two sides of the bottom of the top plate, and a vacuumizing mechanism is arranged above the top plate. And a cooling liquid circulating mechanism is arranged at the lower part in the equipment main body, so that the problems that the cooling capacity of nickel oxide in the cold trap is easy to distribute unevenly, impurities in cooling liquid form dirt on the surface of the cold trap, and the heat transfer efficiency is reduced are solved.

Description

Technical Field

[0001] This utility model relates to the field of low-temperature cold trap technology, specifically a low-temperature cold trap for nickel oxide preparation. Background Technology

[0002] A low-temperature cold trap for nickel oxide preparation is a device used for auxiliary gas treatment during the nickel oxide preparation process. It typically employs a highly efficient refrigeration system to achieve low-temperature conditions, enabling the condensation of specific gases or vapors generated during the reaction on a low-temperature surface. This allows for the capture and separation of these substances, helping to control the reaction environment, improve the purity and quality of nickel oxide products, and reduce harmful gas emissions, thus protecting experimental equipment and the environment.

[0003] For example, the Chinese authorized patent CN206184027U, entitled "A Novel Low-Temperature Cold Trap," includes a cold trap cavity assembly, a cold trap outer coil assembly, a cold trap inner cooling main pipe assembly, and a cold barrier plate assembly. The cold trap cavity assembly includes a cylinder with an upper flange welded to the upper end and a lower flange welded to the lower end. The cylinder has an inlet and an outlet. The cold trap outer coil assembly includes an outer copper coil welded to the outer wall of the cylinder and an outer coil connector connected to the outer copper coil. The cold trap inner cooling main pipe assembly includes an inner cooling main pipe disposed inside the cylinder, with a cooling pipe connector connected to the inner cooling main pipe. The cold barrier plate assembly includes a shaped barrier plate body disposed inside the cylinder, with a handle connected to the shaped barrier plate body.

[0004] While the existing technologies can achieve the preparation of nickel oxide, the nickel oxide placed inside the container is prone to uneven distribution of cooling, and impurities in the coolant may form fouling on the cooling surface of the cold trap, reducing heat transfer efficiency. Therefore, they do not meet the current requirements. To address this, we propose a low-temperature cold trap for nickel oxide preparation. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature cold trap for nickel oxide preparation, in order to solve the problems mentioned in the background art, such as uneven distribution of cold energy in the nickel oxide inside the cold trap and the formation of dirt on the surface of the cold trap by impurities in the coolant, which reduces the heat transfer efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature cold trap for nickel oxide preparation, comprising a main body, a cooling liquid chamber at the upper end of the main body, a spirally wound evaporator on the outer side of the cooling liquid chamber, a tray fixedly disposed at the bottom of the cooling liquid chamber, a container disposed above the tray, a first stir bar disposed at the bottom of the container cavity, a second stir bar disposed below the tray, a top plate disposed below the main body, support rods fixedly disposed on both sides of the bottom of the top plate and slidingly limited by the main body, a vacuuming mechanism disposed above the top plate, and a cooling liquid circulation mechanism disposed at the lower part of the main body.

[0007] Preferably, the vacuuming mechanism includes a vacuum pump fixed to the upper surface of the top plate, one end of the vacuum pump is equipped with an exhaust pipe extending to the bottom of the top plate, and the end of the exhaust pipe above the top plate is provided with a pressure sensor and an electronically controlled valve.

[0008] Preferably, a first motor is fixedly installed on both sides inside the main body of the device. The output shaft of the first motor is equipped with a stud, which extends into the threaded hole of the support rod and is threadedly engaged with the support rod.

[0009] Preferably, a second motor is installed in the middle position inside the main body of the device, and a magnet is installed on the output shaft of the second motor, and the magnet is magnetically attracted to the first stir bar and the second stir bar.

[0010] Preferably, the coolant circulation mechanism includes a filtration mechanism disposed at the lower end of the main body of the equipment. A filter screen is disposed on one side of the filtration mechanism, and activated carbon particles are disposed on the other side of the filtration mechanism. An inlet pipe is disposed on one side of the filtration mechanism and is connected to the bottom of the coolant chamber. A circulation pump is installed at the middle position of the inlet pipe. An outlet pipe is disposed on the other side of the filtration mechanism and is connected to the upper end of one side of the coolant chamber.

[0011] Preferably, a medium cooling device is provided on one side of the main body of the equipment. The medium cooling device includes a condenser, a compressor, and an expansion valve, and the evaporator, condenser, compressor, and expansion valve are connected through a medium pipeline.

[0012] Preferably, a rubber sealing ring is adhered and fixed to the bottom of the top plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model installs stirrers in both the coolant chamber and the container. During the preparation of nickel oxide, the output shaft of the second motor drives the magnet to rotate. The positive and negative poles of the magnet correspond to the two ends of the first and second stirrers, respectively. Under the action of magnetic force, the first stirrer stirs the nickel oxide raw material inside the container, and the second stirrer stirs the coolant. In the container, the stirring of the nickel oxide raw material by the first stirrer can promote the full mixing of the raw material, ensure the uniform distribution of each component in the reaction system, greatly improve the reaction rate, and avoid local over- or under-reaction. In the coolant chamber, the stirring of the coolant by the second stirrer can enhance the heat transfer efficiency inside the coolant, making the temperature distribution of the coolant more uniform. This helps to maintain a stable and precise low-temperature environment in the low-temperature cold trap.

[0015] 2. This utility model features a vacuum mechanism at the top of the top plate. When the top plate is closed over the upper part of the equipment body, the rubber sealing ring can fit tightly against the upper part of the container, ensuring the seal between the top cover and the container. During the nickel oxide preparation process, the vacuum pump is turned on to expel the air inside the container. The negative pressure value inside the container can be detected in real time by the pressure sensor. Once the set pressure is reached, the exhaust pipe is closed by the electronic control valve to stabilize the vacuum state inside the container. The vacuum environment can reduce the obstruction of gas molecules to heat transfer, allowing the heat in the cold trap to be transferred out more effectively through the cooling medium, maintaining a stable low-temperature environment.

[0016] 3. This utility model incorporates a filtration mechanism. During operation, a circulating pump delivers coolant from the coolant chamber to the filtration mechanism via a first motor. The filtration mechanism consists of a filter screen and activated carbon. The filter screen effectively intercepts various particulate impurities mixed in the coolant, such as dust and metal shavings, preventing these impurities from entering pipes, valves, and other critical components of the cold trap during coolant circulation. This prevents poor coolant circulation caused by impurities clogging the system and ensures stable operation. The activated carbon, with its strong adsorption properties, removes organic pollutants, odor substances, and some harmful gases dissolved in the coolant. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 For the present utility model Figure 2 AA section diagram;

[0020] Figure 4 This is a front view of the internal structure of the main body of the device according to this utility model.

[0021] In the diagram: 1. Main body of the equipment; 2. Coolant chamber; 3. Evaporator; 4. Container; 5. Top plate; 6. Support rod; 7. Vacuum pump; 8. Exhaust pipe; 9. Pressure sensor; 10. Electrically controlled valve; 11. Medium cooling equipment; 12. Condenser; 13. Compressor; 14. Rubber sealing ring; 15. Tray; 16. First stirrer; 17. Second stirrer; 18. Filtration mechanism; 19. Filter screen; 20. Activated carbon granules; 21. Liquid inlet pipe; 22. Circulation pump; 23. First motor; 24. Stud; 25. Second motor; 26. Magnet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 An embodiment of this utility model provides a low-temperature cold trap for nickel oxide preparation, comprising a device body 1, a cooling liquid chamber 2 at the upper end of the device body 1, a spirally wound evaporator 3 on the outer side of the cooling liquid chamber 2, a tray 15 fixedly disposed at the bottom of the cooling liquid chamber 2, a container 4 disposed above the tray 15, a first stir bar 16 disposed at the bottom of the inner cavity of the container 4, a second stir bar 17 disposed below the tray 15, a top plate 5 disposed below the device body 1, support rods 6 fixedly disposed on both sides of the bottom of the top plate 5 and slidingly limited with the device body 1, a vacuuming mechanism disposed above the top plate 5, and a cooling liquid circulation mechanism disposed at the lower part of the device body 1.

[0024] Please see Figure 1 and Figure 3 The vacuum pumping mechanism includes a vacuum pump 7, which is fixed to the upper surface of the top plate 5. One end of the vacuum pump 7 is equipped with an exhaust pipe 8 extending to the bottom of the top plate 5. The end of the exhaust pipe 8 above the top plate 5 is equipped with a pressure sensor 9 and an electric control valve 10. After the vacuum pump 7 is started, it draws gas from the container 4 through the exhaust pipe 8 to reduce the internal pressure. The pressure sensor 9 monitors the pressure value in real time and feeds the data back to the control system. When the pressure reaches the set value, the electric control valve 10 automatically closes, precisely controlling the vacuum degree in the container 4, creating a low-oxygen or even oxygen-free environment for nickel oxide preparation, preventing nickel oxide from being over-oxidized, and ensuring product purity.

[0025] Please see Figure 1 and Figure 4Both sides of the main body 1 of the equipment are fixedly installed with a first motor 23. The output shaft of the first motor 23 is equipped with a stud 24, which extends into the threaded hole of the support rod 6 and is threadedly engaged with the support rod 6. A rubber sealing ring 14 is adhered and fixed to the bottom of the top plate 5. When the first motor 23 is running, the output shaft drives the stud 24 to rotate. Since the stud 24 is threadedly engaged with the support rod 6, the support rod 6 will move up and down along the stud 24, thereby driving the top plate 5 to rise or fall. The rubber sealing ring 14 plays a sealing role when the top plate 5 contacts the main body 1 of the equipment. The rubber sealing ring 14 enhances the sealing performance of the equipment and prevents external air from entering and affecting the nickel oxide preparation environment.

[0026] Please see Figure 3 and Figure 4 A second motor 25 is installed in the middle of the main body 1 of the equipment. A magnet 26 is installed on the output shaft of the second motor 25, and the magnet 26 is magnetically attracted to the first stir bar 16 and the second stir bar 17. When the second motor 25 is started, the output shaft drives the magnet 26 to rotate. The rotating magnetic field of the magnet 26 acts on the first stir bar 16 and the second stir bar 17, driving them to rotate using magnetic force. The first stir bar 16 stirs the nickel oxide raw material in the container 4, promoting thorough mixing of the raw material, accelerating the reaction process, and improving the uniformity of product quality. The second stir bar 17 agitates the coolant, enhancing the heat transfer efficiency of the coolant, maintaining a stable low-temperature environment in the low-temperature cold trap, which is conducive to the nickel oxide preparation reaction.

[0027] Please see Figure 3 The coolant circulation mechanism includes a filter mechanism 18, which is located at the lower end of the equipment body 1. A filter screen 19 is provided on one side of the filter mechanism 18, and activated carbon particles 20 are provided on the other side of the filter mechanism 18. An inlet pipe 21 is provided on one side of the filter mechanism 18, which is connected to the bottom of the coolant chamber 2. A circulation pump 22 is installed in the middle of the inlet pipe 21. An outlet pipe is provided on the other side of the filter mechanism 18, which is connected to the upper end of one side of the coolant chamber 2. When the circulation pump 22 is started, the coolant at the bottom of the coolant chamber 2 is drawn into the filter mechanism 18 through the inlet pipe 21. The coolant first passes through the filter screen 19, where larger particulate impurities are intercepted. Then it flows through the activated carbon particles 20, where organic pollutants are adsorbed. The purified coolant then flows back to the coolant chamber 2 through the outlet pipe. Benefits: Filter 19 intercepts particulate impurities, preventing them from clogging pipes and damaging equipment components; activated carbon particles 20 adsorb organic pollutants, improving the chemical properties of the coolant, extending its service life, preventing impurities from interfering with the nickel oxide preparation process, and ensuring product quality.

[0028] Please see Figure 1 and Figure 3A medium cooling device 11 is installed on one side of the main body 1. The medium cooling device 11 includes a condenser 12, a compressor 13, and an expansion valve. The evaporator 3, condenser 12, compressor 13, and expansion valve are connected via a medium pipeline. The compressor 13 compresses the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure gas, which is then sent to the condenser 12. In the condenser 12, the refrigerant gas dissipates heat to the outside and condenses into a liquid. It then passes through the expansion valve for throttling and pressure reduction, becoming a low-temperature, low-pressure gas-liquid mixture that enters the evaporator 3. In the evaporator 3, it absorbs heat from the cooling liquid chamber 2, cooling the liquid and vaporizing itself back into a low-temperature, low-pressure gas, which is then drawn back into the compressor 13 for compression, thus completing the cycle. Benefits: It continuously provides a low-temperature environment to the cooling liquid chamber 2, ensuring the low-temperature cold trap is maintained at a suitable temperature, meeting the stringent low-temperature requirements for nickel oxide preparation, and guaranteeing the stability and efficiency of the preparation process.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-temperature cold trap for nickel oxide preparation, comprising a main body (1), characterized in that: The upper part of the device body (1) is provided with a coolant chamber (2), and the outside of the coolant chamber (2) is provided with a spirally wrapped evaporator (3). The bottom of the coolant chamber (2) is fixedly provided with a tray (15), and a container (4) is provided above the tray (15). The bottom of the inner cavity of the container (4) is provided with a first stirrer (16), and the bottom of the tray (15) is provided with a second stirrer (17). The bottom of the device body (1) is provided with a top plate (5), and the bottom sides of the top plate (5) are fixedly provided with support rods (6) that slide and limit the device body (1). The top plate (5) is provided with a vacuuming mechanism, and the bottom of the device body (1) is provided with a coolant circulation mechanism.

2. The low-temperature cold trap for nickel oxide preparation according to claim 1, characterized in that: The vacuum pumping mechanism includes a vacuum pump (7) which is fixed to the upper surface of the top plate (5). One end of the vacuum pump (7) is equipped with an exhaust pipe (8) extending to the bottom of the top plate (5). The exhaust pipe (8) located above the top plate (5) is equipped with a pressure sensor (9) and an electric control valve (10).

3. The low-temperature cold trap for nickel oxide preparation according to claim 1, characterized in that: The device body (1) has a first motor (23) fixedly installed on both sides inside. The output shaft of the first motor (23) is equipped with a stud (24). The stud (24) extends into the screw hole of the support rod (6) and the stud (24) is threadedly engaged with the support rod (6).

4. The low-temperature cold trap for nickel oxide preparation according to claim 1, characterized in that: A second motor (25) is installed in the middle of the main body (1) of the device. A magnet (26) is installed on the output shaft of the second motor (25), and the magnet (26) is magnetically attracted to the first stir bar (16) and the second stir bar (17).

5. A low-temperature cold trap for preparing nickel oxide according to claim 1, characterized in that: The coolant circulation mechanism includes a filter mechanism (18), which is located at the lower end of the main body (1) of the equipment. A filter screen (19) is provided on one side of the filter mechanism (18), and activated carbon particles (20) are provided on the other side of the filter mechanism (18). An inlet pipe (21) is provided on one side of the filter mechanism (18), and the inlet pipe (21) is connected to the bottom of the coolant chamber (2). A circulation pump (22) is installed at the middle position of the inlet pipe (21). An outlet pipe is provided on the other side of the filter mechanism (18), which is connected to the upper end of one side of the coolant chamber (2).

6. The low-temperature cold trap for nickel oxide preparation according to claim 1, characterized in that: A medium cooling device (11) is provided on one side of the main body (1) of the equipment. The medium cooling device (11) includes a condenser (12), a compressor (13) and an expansion valve, and the evaporator (3), condenser (12), compressor (13) and expansion valve are connected through a medium pipeline.

7. A low-temperature cold trap for preparing nickel oxide according to claim 1, characterized in that: A rubber sealing ring (14) is adhered and fixed to the bottom of the top plate (5).

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