Multi-effect evaporation device

Abstract

The utility model relates to the technical field of allopurinol preparation, in particular to a multi-effect evaporation device which comprises a base, evaporation cavities are evenly and fixedly installed on the base, communicating pipes are installed among the three evaporation cavities, a rotating frame is arranged on the base in a sliding mode, evaporation tanks are evenly installed on the rotating frame, and the communicating pipes are communicated with the evaporation tanks. A threaded rod is fixedly installed on the base, a rotating disc is rotatably installed on the rotating frame, a threaded sleeve is rotatably installed on the rotating disc, a motor is fixedly installed on the rotating disc, a gear set is installed between the motor and the threaded sleeve, and the threaded sleeve is meshed with the threaded rod. The motor is started to drive the threaded sleeve to rotate anticlockwise through the gear set, so that the threaded sleeve pulls the rotating frame to slide upwards through the rotating disc, the evaporation tank is separated from the evaporation cavity, then the rotating frame is pushed to rotate, station switching can be rapidly carried out, and raw materials do not need to be transferred among different efficiency levels.

Description

Technical Field

[0001] This utility model relates to the field of allopurinol preparation technology, and in particular to a multi-effect evaporation device. Background Technology

[0002] In numerous industrial sectors such as chemical, food, and pharmaceutical industries, multi-effect evaporators are crucial for achieving process goals such as efficient concentration, purification, and solvent recovery. In practical applications, multi-effect evaporators typically require the following technologies:

[0003] 1. Evaporation mechanism: The solution is heated and evaporated in the evaporator by means of falling film evaporation, forced circulation evaporation, etc.

[0004] 2. Effect body connection and energy utilization mechanism: Multiple effects are combined together by using connection methods such as series, parallel or mixed connection. When connected in series, the secondary steam of the previous effect is used as the heat source of the next effect, making full use of the latent heat of steam to realize multi-stage energy utilization and improve thermal efficiency.

[0005] Traditional multi-effect evaporation requires pumping materials between different effect stages, which is not only cumbersome, but also poses a risk of cross-contamination due to residues in pipelines and other areas. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a multi-effect evaporation device that solves the technical problem that traditional multi-effect evaporation requires pumping materials between different effect stages, which is not only cumbersome but also poses a risk of cross-contamination due to residues in pipes and other areas.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-effect evaporation device includes a base, on which evaporation chambers are uniformly fixedly installed, and a connecting pipe is installed between the three evaporation chambers. A rotating frame is slidably arranged on the base, and evaporation tanks are uniformly installed on the rotating frame. A threaded rod is fixedly installed on the base, and a rotating disk is rotatably installed on the rotating frame. A threaded sleeve is rotatably installed on the rotating disk, and a motor is fixedly installed on the rotating disk. A gear set is installed between the motor and the threaded sleeve, and the threaded sleeve and the threaded rod mesh with each other.

[0009] Preferably, an exhaust cover is slidably mounted on the base.

[0010] Preferred option: A spring is installed on the exhaust cover.

[0011] Preferably, retaining rings are evenly and smoothly mounted on the rotating frame.

[0012] Preferably, an air inlet pipe is fixedly installed on the evaporator chamber.

[0013] Preferably, an exhaust pipe is fixedly installed on the evaporator chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The raw material liquid is poured into the first evaporator. The methanol in the raw material liquid is first evaporated through the first evaporation chamber and discharged through the exhaust cover at the top of the evaporator. After the first effect evaporation is completed, the motor starts and drives the threaded sleeve to rotate counterclockwise through the gear set. Since the threaded sleeve is threaded to the threaded rod, the threaded sleeve will pull the rotating frame upward through the rotating disk, thereby driving the evaporator upward and causing the evaporator to detach from the evaporation chamber. During this process, the evaporator will push the exhaust cover to slide upward against the spring force. Then, by pushing the rotating frame to rotate, the first evaporator moves to the top of the second evaporation chamber. Then, the motor starts in reverse and drives the threaded sleeve to rotate clockwise through the gear set, pulling the evaporator downward and moving it into the second evaporation chamber. At this time, the second evaporation chamber will further evaporate the residual methanol and water in the raw material. After the second effect evaporation is completed, the first evaporator will move to the third evaporation chamber in the same way for triple effect evaporation crystallization to complete the preparation of allopurinol. This allows for rapid switching between work stations without the need to transfer the raw material between different effect stages.

[0016] II. During operation, high-temperature steam enters the first evaporation chamber through the inlet pipe, heating the first evaporator and completing the first-effect evaporation. After heating the first evaporator, the high-temperature steam in the first evaporation chamber will decrease in temperature and then enter the second evaporation chamber through the connecting pipe, heating the second evaporator and completing the second-effect evaporation. Then, the cooled steam will enter the third evaporation chamber through the second connecting pipe, heating the third evaporator and completing the third-effect evaporation. Finally, the steam will be discharged through the exhaust pipe. By connecting the three evaporation chambers in series through the connecting pipe, the evaporation of different effects by steam with gradually decreasing temperature achieves the effect of improving energy utilization. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is an exploded structural diagram of the present invention;

[0021] Figure 4This is a structural diagram of the rotating frame of this utility model.

[0022] Legend: 1. Base; 2. Evaporator chamber; 3. Connecting pipe; 4. Rotating frame; 5. Evaporator tank; 6. Threaded rod; 7. Threaded sleeve; 8. Motor; 9. Gear set; 11. Exhaust cover; 12. Spring; 13. Snap ring; 14. Inlet pipe; 15. Exhaust pipe; 16. Rotating disc. Detailed Implementation

[0023] This application provides a multi-effect evaporation device that effectively solves the technical problem of traditional multi-effect evaporation requiring pumping materials between different effect stages, which is not only cumbersome but also poses a risk of cross-contamination due to residues in pipelines and other areas. The raw material liquid is poured into the first evaporator, where methanol is evaporated and discharged through the exhaust cover at the top of the evaporator. After the first effect evaporation is complete, the motor starts and drives the threaded sleeve to rotate counterclockwise via a gear set. Because the threaded sleeve is threaded to the threaded rod, it pulls the rotating frame upwards via a rotating disc, thereby causing the evaporator to slide upwards and detach from the evaporation chamber. During this process, the evaporator pushes the exhaust cover upwards against the spring force, and then, by pushing the rotating frame to rotate, moves the first evaporator above the second evaporation chamber. Then, the motor starts in reverse and drives the threaded sleeve to rotate clockwise via the gear set, pulling the evaporator downwards into the second evaporation chamber. The second evaporation chamber further evaporates the residual methanol and water in the raw material. After the second-effect evaporation is completed, the first evaporator will be moved to the third evaporation chamber in the same way for triple-effect evaporation and crystallization to complete the preparation of allopurinol. This allows for rapid switching between workstations without the need to transfer the raw material between different effect stages. During operation, high-temperature steam enters the first evaporation chamber through the inlet pipe to heat the first evaporator and complete the first-effect evaporation. The high-temperature steam in the first evaporation chamber will then decrease in temperature after heating the first evaporator and enter the second evaporation chamber through the connecting pipe to heat the second evaporator and complete the second-effect evaporation. The steam, which has cooled down again, will then enter the third evaporation chamber through the second connecting pipe to heat the third evaporator and complete the triple-effect evaporation. Finally, the steam will be discharged through the exhaust pipe. By connecting the three evaporation chambers in series through the connecting pipe, the evaporation of different effect stages using steam with progressively decreasing temperatures achieves the effect of improving energy utilization.

[0024] Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application embodiment effectively solves the technical problem that traditional multi-effect evaporation requires pumping materials between different effect stages, which is not only cumbersome but also poses a risk of cross-contamination due to residues in pipelines and other areas. The overall idea is as follows:

[0026] In view of the problems existing in the prior art, the present invention provides a multi-effect evaporation device, including a base 1, on which evaporation chambers 2 are uniformly fixedly installed, and a connecting pipe 3 is installed between the three evaporation chambers 2. A rotating frame 4 is slidably arranged on the base 1, and evaporation tanks 5 are uniformly installed on the rotating frame 4.

[0027] A threaded rod 6 is fixedly installed on the base 1, a rotating disk 16 is rotatably installed on the rotating frame 4, a threaded sleeve 7 is rotatably installed on the rotating disk 16, a motor 8 is fixedly installed on the rotating disk 16, and a gear set 9 is installed between the motor 8 and the threaded sleeve 7.

[0028] The threaded sleeve 7 and the threaded rod 6 are engaged. An exhaust cover 11 is slidably installed on the base 1. A spring 12 is installed on the exhaust cover 11. A retaining ring 13 is slidably installed evenly on the rotating frame 4. An air inlet pipe 14 is fixedly installed on the evaporation chamber 2. An exhaust pipe 15 is fixedly installed on the evaporation chamber 2.

[0029] Base 1: As the supporting structure of the entire multi-effect evaporator, it provides the installation foundation for components such as evaporation chamber 2, threaded rod 6, and exhaust cover 11, ensuring the stability of the device. At the same time, it also provides a track for the sliding of the rotating frame 4, allowing the rotating frame 4 to slide up and down and rotate on it, so as to realize the switching of the evaporator 5 between different evaporation chambers 2.

[0030] Evaporation chamber 2: This is the main place where the evaporation process takes place. It can accommodate evaporator 5. High-temperature steam is introduced through the air inlet pipe 14. The heat of the steam is used to heat and evaporate the raw material liquid in the evaporator 5 placed inside, realizing different levels of evaporation operation. The three evaporation chambers 2 are connected in series through the connecting pipe 3, so that the steam heats the evaporator 5 in different evaporation chambers 2 in sequence, gradually utilizing the waste heat of the steam and improving the energy utilization rate.

[0031] Connecting pipe 3: Connects three evaporation chambers 2, allowing the steam that has been heated and evaporated in the previous evaporation chamber 2 and whose temperature has dropped to flow into the next evaporation chamber 2, providing a heat source for the next stage of evaporation, realizing the cascade utilization of steam waste heat in the multi-effect evaporation process, thereby improving the energy utilization rate of the entire device;

[0032] Rotating frame 4: It is slidably set on the base 1, and evaporators 5 are evenly installed on it. Under the cooperation of motor 8, threaded sleeve 7 and threaded rod 6, it can drive evaporators 5 to slide up and down and rotate, realize the rapid switching of evaporators 5 between different evaporation chambers 2, and eliminate the need to transfer raw materials between different efficiency stages, thereby improving evaporation efficiency. At the same time, retaining rings 13 are also evenly slidably installed on the rotating frame 4 to fix evaporators 5.

[0033] Evaporator 5: Used to hold raw material liquid, it is heated by steam in evaporation chamber 2 to evaporate the solvent in the raw material liquid, so as to realize the concentration or purification of raw material. Driven by the rotating frame 4, it can move between different evaporation chambers 2 to complete the multi-effect evaporation process in sequence, such as completing the evaporation operation of different stages in the preparation of allopurinol.

[0034] Threaded rod 6: It is fixedly installed on the base 1 and meshes with the threaded sleeve 7. It provides guidance and support for the up and down sliding of the rotating frame 4. Through the threaded transmission with the threaded sleeve 7, the rotational motion of the threaded sleeve 7 is converted into the up and down linear motion of the rotating frame 4, thereby driving the evaporator 5 to move up and down in the evaporation chamber 2 to realize the switching of work positions.

[0035] Threaded sleeve 7: Rotatably mounted on rotating disk 16, threadedly connected to threaded rod 6, rotated under the drive of motor 8 through gear set 9, thereby driving rotating frame 4 to slide up and down along threaded rod 6, realizing the position adjustment of evaporator 5 between different evaporation chambers 2, so as to complete evaporation operations of different efficiency levels;

[0036] Motor 8: Fixedly mounted on rotating disk 16, serving as a power source, it drives threaded sleeve 7 to rotate via gear set 9, alternating between forward and reverse rotation to realize the up and down movement of evaporator 5 within evaporation chamber 2, thereby completing the switching of work positions between different evaporation chambers 2 and ensuring the smooth operation of the multi-effect evaporation process;

[0037] Gear set 9: Installed between motor 8 and threaded sleeve 7, it plays the role of transmitting power and changing speed. It transmits the power output by motor 8 to threaded sleeve 7 and adjusts the speed according to actual needs, so that threaded sleeve 7 can rotate at a suitable speed, thereby precisely controlling the moving speed and position of rotating frame 4 and evaporator 5.

[0038] Exhaust cover 11: It is slidably installed on the base 1 and located above the evaporator 5. During the evaporation process, the gas generated by the evaporation of the raw material liquid is discharged through it. When the evaporator 5 moves upward, it will push the exhaust cover 11 to overcome the elastic force of the spring 12 and slide upward, ensuring that the evaporator 5 can smoothly separate from the evaporation chamber 2 for work station switching. At the same time, during normal evaporation, it can prevent external impurities from entering the evaporator 5.

[0039] Spring 12: Installed on the exhaust cover 11, it provides a downward elastic force to the exhaust cover 11. When the evaporator 5 is not moving upward, it keeps the exhaust cover 11 in a closed state to prevent external impurities from entering the evaporator 5. When the evaporator 5 moves upward, the exhaust cover 11 slides upward against the elastic force of the spring 12. When the evaporator 5 returns to its original position, the spring 12 can make the exhaust cover 11 return to the closed state.

[0040] Snap ring 13: It is evenly and smoothly installed on the rotating frame 4 to fix the evaporator 5, prevent the evaporator 5 from shaking or shifting during the movement of the rotating frame 4, ensure the stability of the evaporator 5 during the switching process between different work positions, and ensure the smooth progress of the evaporation operation.

[0041] Inlet pipe 14: Fixedly installed on the evaporation chamber 2, used to connect to the gas supply system, introduce high-temperature steam into the evaporation chamber 2, provide heat for the evaporation of raw material liquid in the evaporation tank 5, and is the heat input channel for realizing the evaporation operation;

[0042] Exhaust pipe 15: Fixedly installed on the evaporation chamber 2, used to discharge the remaining steam after multi-effect evaporation, so that the steam in the entire evaporation system can form a circulation flow, ensuring the continuous operation of the evaporation process.

[0043] Rotary disk 16: Rotatably mounted on the rotating frame 4, providing an installation position for the threaded sleeve 7 and the motor 8; at the same time, when the threaded sleeve 7 rotates, it acts as a connecting component to drive the rotating frame 4 to slide up and down, so that the rotating frame 4 can move according to the design requirements and realize the switching of the work position of the evaporator 5.

[0044] Working principle:

[0045] The first step involves connecting the intake pipe 14 to the gas supply system during installation. In operation, high-temperature steam enters the first evaporation chamber 2 via the intake pipe 14, heating the first evaporator tank 5 to complete the first-effect evaporation. After heating the first evaporator tank 5, the high-temperature steam in the first evaporation chamber 2 cools down and enters the second evaporation chamber 2 via the connecting pipe 3, heating the second evaporator tank 5 to complete the second-effect evaporation. The cooled steam then enters the third evaporation chamber 2 via the second connecting pipe 3, heating the third evaporator tank 5 to complete the third-effect evaporation. Finally, the steam is discharged through the exhaust pipe 15. By connecting the three evaporation chambers 2 in series via the connecting pipe 3, the gradually decreasing temperature of the steam at different evaporation stages improves energy efficiency.

[0046] The second step involves pouring the raw material liquid into the first evaporator 5. The methanol in the raw material liquid is first evaporated through the first evaporation chamber 2 and discharged through the exhaust cover 11 above the evaporator 5. After the first evaporation effect is complete, the motor 8 starts and drives the threaded sleeve 7 to rotate counterclockwise via the gear set 9. Since the threaded sleeve 7 is threadedly connected to the threaded rod 6, it will pull the rotating frame 4 upwards via the rotating disk 16, thereby causing the evaporator 5 to slide upwards and disengage from the evaporation chamber 2. During this process, the evaporator 5 will push the exhaust cover 11 upwards against the spring force of the spring 12. Then, by pushing the rotating frame 4 to rotate, the first evaporator 5 is moved above the second evaporator chamber 2. Then, the motor 8 starts in reverse and drives the threaded sleeve 7 to rotate clockwise through the gear set 9, pulling the evaporator 5 down to slide into the second evaporator chamber 2. At this time, the second evaporator chamber 2 will further evaporate the residual methanol and water in the raw material. After the second-effect evaporation is completed, the first evaporator 5 will move to the third evaporator chamber 2 in the same way to carry out triple-effect evaporation crystallization and complete the preparation of allopurinol. The station can be quickly switched without the need to transfer the raw material between different effects.

[0047] 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 here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multi-effect evaporation device, comprising a base (1), characterized in that, Evaporation chambers (2) are uniformly fixedly installed on the base (1). A connecting pipe (3) is installed between the three evaporation chambers (2). A rotating frame (4) is slidably arranged on the base (1). Evaporation tanks (5) are uniformly installed on the rotating frame (4). A threaded rod (6) is fixedly installed on the base (1). A rotating disk (16) is rotatably installed on the rotating frame (4). A threaded sleeve (7) is rotatably installed on the rotating disk (16). A motor (8) is fixedly installed on the rotating disk (16). A gear set (9) is installed between the motor (8) and the threaded sleeve (7). The threaded sleeve (7) and the threaded rod (6) mesh with each other.

2. The multi-effect evaporation device as described in claim 1, characterized in that, An exhaust cover (11) is slidably mounted on the base (1).

3. The multi-effect evaporation device as described in claim 2, characterized in that, A spring (12) is installed on the exhaust cover (11).

4. The multi-effect evaporation device as described in claim 1, characterized in that, The rotating frame (4) is uniformly and slidably mounted with retaining rings (13).

5. A multi-effect evaporation device as described in claim 1, characterized in that, An air inlet pipe (14) is fixedly installed on the evaporation chamber (2).

6. The multi-effect evaporation device as described in claim 1, characterized in that, An exhaust pipe (15) is fixedly installed on the evaporation chamber (2).

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