Solvent recovery device for a drug substance plant

Abstract

The utility model provides raw material medicine workshop solvent recovery unit belongs to liquid recovery technical field, include: shell, filter frame, winding roller, filter screen roll and extrusion board. The shell top is equipped with liquid inlet hole bottom and is equipped with liquid storage cavity, and the shell inner wall is equipped with miscellaneous storage cabin miscellaneous storage cavity. The filter plate and the supporting plate all are equipped with filter hole, and the bottom end of filter plate extends to the miscellaneous storage cabin miscellaneous storage cavity. Winding roller rotatory installation is in one side of shell. Filter screen roll is installed in the side of shell far from winding roller, and filter screen roll unwinds filter screen, and filter screen passes above supporting plate and winds on winding roller, and filter screen passes through supporting plate and is used for filtering solvent after filter plate filtering. Extrusion board is slidably arranged on one side of winding roller, and extrusion board extrudes the filter screen after winding and is used for extruding solvent. The raw material medicine workshop solvent recovery unit provided by the utility model can realize the continuous filtration of solvent and recover the solvent to the maximum extent, avoid the waste of resources, and the whole device is reliable in operation and low in failure rate.

Description

Technical Field

[0001] This utility model belongs to the field of liquid recovery technology, and more specifically, relates to a solvent recovery device for pharmaceutical raw material workshops. Background Technology

[0002] In the production processes of many industries such as chemicals and pharmaceuticals, the filtration and recycling of solvents are crucial. As a reaction medium or a key substance for separation and purification, the purity of solvents directly affects product quality. Effective solvent recycling can reduce production costs and achieve resource recycling. However, existing solvent filtration and recovery devices generally have limitations. Some devices use fixed filter screens for filtration, which easily become clogged over time, requiring frequent replacement and causing production interruptions, making continuous solvent filtration impossible. Furthermore, in the solvent recovery stage, traditional devices do not recover solvent sufficiently, leaving a large amount of solvent residue on the filter screen or in the filtration structure, resulting in significant resource waste and poor solvent recovery efficiency, failing to meet the demands of high-efficiency production and environmental protection. Utility Model Content

[0003] The purpose of this invention is to provide a solvent recovery device for pharmaceutical raw material workshops, which aims to solve the problems of inability to continuously filter solvents and poor solvent recovery effect.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a solvent recovery device for a pharmaceutical raw material workshop, comprising: The outer casing has a liquid inlet at the top and a liquid storage chamber at the bottom, and a miscellaneous storage compartment on the inner wall of the outer casing. A filter frame is located inside the outer casing. From top to bottom, the filter frame consists of a filter plate, a connecting rod, and a support plate. The filter plate is inclined downwards, and the support plate is located below the filter plate. The two ends of the connecting rod are respectively connected to the filter plate and the support plate. Filter holes are provided on both the filter plate and the support plate, and the bottom end of the filter plate extends into the storage compartment. A take-up roller is rotatably mounted on one side of the housing; A filter screen roll is installed on the side of the housing away from the take-up roller. The filter screen roll is unwound from the housing. The filter screen passes over the support plate and is wound around the take-up roller. The filter screen is used by the support plate to filter the solvent after it has been filtered by the filter plate. An extrusion plate is slidably disposed on one side of the winding roller, and the extrusion plate extrudes the wound filter screen to extrude solvent.

[0005] In one possible implementation, the extrusion plate is connected to a hydraulic cylinder, which drives the extrusion plate to reciprocate.

[0006] In one possible implementation, the extrusion plate is located above the take-up roller, and a positioning block is provided below the take-up roller. Both the positioning block and the extrusion plate have multiple through holes for solvent flow.

[0007] In one possible implementation, the extrusion plate and the positioning block are located on both sides of the take-up roller, and both are provided with arc-shaped grooves for extruding the filter screen.

[0008] In one possible implementation, a support block is fixed to the inner wall of the housing, and the filter plate is detachably connected to the support block.

[0009] In one possible implementation, a vibration motor is mounted on the filter plate.

[0010] In one possible implementation, the support block has a slot adapted to the filter plate, and multiple buffer balls are provided between the sidewall of the slot and the filter plate.

[0011] In one possible implementation, the buffer balls are made of a flexible material, and multiple buffer balls cooperate to reset the filter plate; the support plate is positioned inside the housing by means of the connecting rod.

[0012] In one possible implementation, a pressure bar is hinged to the support plate, the pressure bar being used to adhere the unwound filter screen to the support plate; an elastic element is connected between the pressure bar and the support plate, and a ball is connected to the end of the pressure bar.

[0013] In one possible implementation, the outer shell has a discharge port, a storage compartment is detachably connected to the discharge port, the miscellaneous storage compartment is located inside the storage compartment, and the bottom end of the filter plate extends to the discharge port.

[0014] The beneficial effects of the solvent recovery device for raw material pharmaceutical workshops provided by this utility model are as follows: Compared with the prior art, the solvent recovery device for raw material pharmaceutical workshops of this utility model has a liquid inlet hole at the top of the outer shell and a liquid storage chamber at the bottom. The filter plate, connecting rod, and support plate are arranged from top to bottom inside the outer shell, with the filter plate inclined downwards and the connecting rod connecting the filter plate and the support plate. Filter holes are provided on both the filter plate and the support plate. A vibration motor is installed on the filter frame, a winding roller is rotatably installed on one side of the outer shell, a filter screen roll is installed on the other side of the outer shell, and a pressing plate is slidably disposed on one side of the winding roller.

[0015] In practical applications, the filter screen is unwound and rewound, passing over the support plate and wound onto the take-up roller. The unwinding and rewinding of the filter screen allows for continuous solvent filtration. Solvent entering through the inlet first passes through the filter plate, which collects impurities. The pre-filtered solvent then contacts the filter screen for further filtration. The solvent on the filter screen is then wound onto the take-up roller and finally extruded by the extrusion plate, ultimately being collected in the storage chamber. This application achieves continuous solvent filtration and maximizes solvent recovery, avoiding resource waste. The entire device operates reliably with a low failure rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the support plate and the support block provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram showing the connection between the pressure bar and the support plate provided in an embodiment of the present utility model.

[0018] In the diagram: 1. Outer shell; 2. Liquid inlet; 3. Hydraulic cylinder; 4. Extrusion plate; 5. Positioning block; 6. Through hole; 7. Take-up roller; 8. Pressure rod; 9. Liquid storage chamber; 10. Support plate; 11. Connecting rod; 12. Filter plate; 13. Filter screen roll; 14. Filter hole; 15. Support block; 16. Buffer ball; 17. Filter screen; 18. Elastic element; 19. Storage compartment. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Please refer to the following: Figures 1 to 3The present invention provides a solvent recovery device for a pharmaceutical raw material workshop. The solvent recovery device for a pharmaceutical raw material workshop includes: a shell 1, a filter frame, a winding roller 7, a filter screen roll 13, and a pressing plate 4. The shell 1 has a liquid inlet 2 at the top and a liquid storage chamber 9 at the bottom, with a waste storage compartment on the inner wall of the shell 1. The filter frame is located inside the shell 1, and from top to bottom consists of a filter plate 12, a connecting rod 11, and a support plate 10. The filter plate 12 is inclined downwards, and the support plate 10 is located below the filter plate 12. The two ends of the connecting rod 11 are connected to the filter plate 12 and the support plate 10, respectively. Both the filter plate 12 and the support plate 10 have filter holes 14, and the bottom end of the filter plate 12 extends into the waste storage compartment. The winding roller 7 is rotatably mounted on one side of the shell 1. The filter screen roll 13 is installed on the side of the housing 1 away from the take-up roller 7. The filter screen roll 13 unwinds the filter screen 17, which passes over the support plate 10 and is wound onto the take-up roller 7. The filter screen 17 is used by the support plate 10 to filter the solvent after it has been filtered by the filter plate 12. The extrusion plate 4 is slidably disposed on one side of the take-up roller 7. The extrusion plate 4 extrudes the solvent by pressing the wound filter screen 17.

[0021] The beneficial effects of the solvent recovery device for a pharmaceutical raw material workshop provided by this utility model are as follows: Compared with the prior art, the solvent recovery device for a pharmaceutical raw material workshop of this utility model has a liquid inlet hole 2 at the top of the outer shell 1 and a liquid storage chamber 9 at the bottom. The filter plate 12, connecting rod 11, and support plate 10 are arranged from top to bottom inside the outer shell 1, with the filter plate 12 inclined downwards and the connecting rod 11 connecting the filter plate 12 and the support plate 10. Filter holes 14 are provided on both the filter plate 12 and the support plate 10. A vibration motor is installed on the filter frame, a winding roller 7 is rotatably installed on one side of the outer shell 1, a filter screen roll 13 is installed on the other side of the outer shell 1, and a pressing plate 4 is slidably disposed on one side of the winding roller 7.

[0022] In practical applications, the filter screen roll 13 unwinds the filter screen 17, which passes over the support plate 10 and is wound onto the take-up roller 7. The unwinding of the filter screen roll 13 enables continuous solvent filtration. Solvent entering through the inlet hole 2 first passes through the filter plate 12, which collects impurities. The pre-filtered solvent then contacts the filter screen 17 for further filtration. The solvent on the filter screen 17 is then wound onto the take-up roller 7 and finally extruded by the extrusion plate 4, ultimately being collected in the storage chamber 9. This application achieves continuous solvent filtration and maximizes solvent recovery, avoiding resource waste. The entire device operates reliably with a low failure rate.

[0023] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 The extrusion plate 4 is connected to a hydraulic cylinder 3, which is used to drive the extrusion plate 4 to reciprocate.

[0024] The stroke of the extrusion plate 4 is set according to actual needs to ensure optimal extrusion effect on the material. When the hydraulic cylinder 3 is activated, it pushes the extrusion plate 4 at a preset speed and force, enabling the extrusion plate 4 to reciprocate stably. During the forward movement of the extrusion plate 4, it applies pressure to the filter screen 17 placed at a specific position, gradually squeezing out the solvent from the filter screen 17. As the extrusion plate 4 continues to advance, the pressure on the filter screen 17 continuously increases, and the solvent is squeezed out through the tiny pores inside the filter screen 17, thereby achieving separation of the solvent from the filter screen 17. When the extrusion plate 4 moves backward, it prepares for the next extrusion operation, allowing the entire solvent recovery process to proceed in a cyclical and orderly manner.

[0025] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 The extrusion plate 4 is located above the take-up roller 7, and a positioning block 5 is provided below the take-up roller 7. Both the positioning block 5 and the extrusion plate 4 have multiple through holes 6 for solvent flow.

[0026] The design of these through-holes 6 ensures smooth solvent flow within the device, making the solvent recovery process more efficient. When the solvent passes through the extrusion plate 4, it permeates downwards through the through-holes 6 under pressure. The through-holes 6 on the positioning block 5 receive the solvent permeating from the extrusion plate 4, further guiding the solvent's flow path so that it can be recovered and processed in a predetermined manner. By rationally setting the size, number, and distribution density of the through-holes 6, the recovery needs of different types of solvents can be better accommodated, thereby improving the performance and effectiveness of the solvent recovery device in the entire API workshop and providing strong support for the workshop's safe production and environmental protection efforts.

[0027] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 The extrusion plate 4 and the positioning block 5 are located on both sides of the winding roller 7, and both are provided with arc-shaped grooves for extruding the filter screen 17.

[0028] The curvature of the arc groove is adapted to the outer periphery of the filter screen 17. When the extrusion plate 4 moves closer to the positioning block 5, it can uniformly extrude the filter screen 17 and effectively squeeze out the solvent attached to the filter screen 17.

[0029] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1A support block 15 is fixed to the inner wall of the outer casing 1, and the filter plate 12 is detachably connected to the support block 15. Specifically, the connection can be achieved by setting a slot on the support block 15 and a corresponding retaining strip on the edge of the filter plate 12, with the retaining strip embedded in the slot to achieve a detachable connection. This design allows for convenient and quick cleaning or replacement of the filter plate 12. When the solvent recovery device is running, the filter plate 12 effectively intercepts impurities, preventing them from entering the subsequent recovery process and ensuring the quality of the recovered solvent. Furthermore, this detachable connection allows for regular cleaning of the filter plate 12, removing adhering dirt and residual impurities, thereby maintaining its good filtration performance. Even after prolonged use, if the filter plate 12 becomes damaged, it can be replaced promptly, ensuring the solvent recovery device always operates stably and efficiently.

[0030] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 A vibration motor is installed on the filter plate 12. When the vibration motor is installed on the filter plate 12, activating the motor causes the filter plate 12 to vibrate. Vibration helps impurities attached to the filter plate 12 to fall off more easily, preventing impurities from accumulating and affecting the filtration effect. When the solvent enters through the inlet hole 2 and passes through the filter plate 12, the vibration motor drives the filter plate 12 to vibrate, allowing impurities intercepted on the filter plate 12 during the initial filtration to roll more quickly to the bottom of the filter plate 12 and eventually be collected by the impurity storage chamber. At the same time, vibration also helps the solvent after initial filtration to pass more evenly through the filter holes 14 on the filter plate 12 and flow smoothly to the filter screen 17 below, improving the solvent filtration efficiency and the overall performance of the recovery device. This ensures the efficient and stable operation of the entire solvent recovery process, further improving the quality and effect of solvent recovery and better realizing the effective utilization of resources.

[0031] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 and Figure 2The support block 15 has a slot adapted to the filter plate 12, and multiple buffer balls 16 are arranged between the side wall of the slot and the filter plate 12. The main function of the buffer balls 16 is to prevent the filter plate 12 from having a large impact on the outer shell 1 during the operation of the vibrating motor, reduce noise, and ensure reliable connection between the filter plate 12 and the support block 15. Moreover, the multiple buffer balls 16 are evenly distributed, which can protect the filter plate 12 from all directions, ensuring that the filter plate 12 can maintain a stable working state throughout the solvent recovery process, providing a reliable guarantee for subsequent solvent recovery work. In addition, the fitting design between the slot and the filter plate 12 is very precise, so that the filter plate 12 can be tightly installed on the support block 15, preventing solvent leakage during the filtration process, further improving the sealing and stability of the solvent recovery device, and reducing solvent loss caused by leakage and potential safety hazards.

[0032] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 and Figure 2 The buffer ball 16 is made of flexible material, and multiple buffer balls 16 work together to reset the filter plate 12; the support plate 10 is positioned inside the outer shell 1 by means of the connecting rod 11.

[0033] Specifically, the flexible material has good elasticity and flexibility, and can quickly return to its original shape after being subjected to external force. When the filter plate 12 shifts due to various factors during operation, multiple buffer balls 16 will squeeze or stretch according to the direction and degree of its shift, thereby generating a reverse force that causes the filter plate 12 to return to its initial position, ensuring the stability and reliability of the filter plate 12 during device operation.

[0034] The connecting rod 11 is tightly fitted with the support plate 10 and the outer casing 1, ensuring the precise positioning of the support plate 10 within the outer casing 1. This positioning method not only allows the support plate 10 to accurately support the relevant components, avoiding potential malfunctions due to positional deviations, but also provides strong support for the structural stability of the solvent recovery unit in the entire API workshop. Through this ingenious design, the solvent recovery unit, with the synergistic effect of its components, can operate more efficiently and stably, effectively realizing the recovery and utilization of solvents during API production, reducing resource waste, lowering production costs, and meeting environmental protection requirements, thus contributing to sustainable development.

[0035] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 and Figure 3A pressure rod 8 is hinged to the support plate 10. The pressure rod 8 is used to attach the unwound filter screen 17 to the support plate 10. An elastic element 18 is connected between the pressure rod 8 and the support plate 10, and a ball is connected to the end of the pressure rod 8.

[0036] When the solvent recovery device is working, the unwound filter screen 17, under the rolling action of the ball bearings, can more smoothly adhere to the support plate 10. The elastic element 18 plays a buffering and adjusting role, ensuring that the pressure rod 8 can automatically adjust its position according to the placement of the filter screen 17, so that the filter screen 17 and the support plate 10 are tightly fitted, thereby ensuring that no solvent leaks out from the gap between the filter screen 17 and the support plate 10 during the solvent recovery process.

[0037] In some embodiments of the solvent recovery device for the active pharmaceutical ingredient workshop provided in this application, please refer to... Figure 1 The outer shell 1 has a discharge port, and a storage chamber is detachably connected to the discharge port. The storage chamber is located inside the storage chamber, and the bottom end of the filter plate 12 extends to the discharge port.

[0038] A sealing gasket is installed between the filter plate 12 and the inner wall of the storage chamber to prevent material leakage. A threaded connection structure is used for the detachable connection between the discharge port and the storage chamber, facilitating installation and disassembly. When cleaning the storage chamber, it can be easily unscrewed from the discharge port. An observation window is also provided on the outer casing 1, allowing a clear view of the stored contents for timely cleaning.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A solvent recovery device for a pharmaceutical raw material workshop, characterized in that, include: The outer casing has a liquid inlet at the top and a liquid storage chamber at the bottom, and a miscellaneous storage compartment on the inner wall of the outer casing. A filter frame is located inside the outer casing. From top to bottom, the filter frame consists of a filter plate, a connecting rod, and a support plate. The filter plate is inclined downwards, and the support plate is located below the filter plate. The two ends of the connecting rod are respectively connected to the filter plate and the support plate. Filter holes are provided on both the filter plate and the support plate, and the bottom end of the filter plate extends into the storage compartment. A take-up roller is rotatably mounted on one side of the housing; A filter screen roll is installed on the side of the housing away from the take-up roller. The filter screen roll is unwound from the housing. The filter screen passes over the support plate and is wound around the take-up roller. The filter screen is used by the support plate to filter the solvent after it has been filtered by the filter plate. An extrusion plate is slidably disposed on one side of the winding roller, and the extrusion plate extrudes the wound filter screen to extrude solvent.

2. The solvent recovery device for the active pharmaceutical ingredient workshop as described in claim 1, characterized in that, The extrusion plate is connected to a hydraulic cylinder, which drives the extrusion plate to reciprocate.

3. The solvent recovery device for the active pharmaceutical ingredient workshop as described in claim 1, characterized in that, The extrusion plate is located above the take-up roller, and a positioning block is provided below the take-up roller. Both the positioning block and the extrusion plate have multiple through holes for solvent flow.

4. The solvent recovery device for the active pharmaceutical ingredient workshop as described in claim 3, characterized in that, The extrusion plate and the positioning block are located on both sides of the winding roller, and both are provided with arc-shaped grooves for extruding the filter screen.

5. The solvent recovery device for the active pharmaceutical ingredient workshop as described in claim 4, characterized in that, The inner wall of the outer shell is fixed with a support block, and the filter plate is detachably connected to the support block.

6. The solvent recovery device for the active pharmaceutical ingredient workshop as described in claim 1, characterized in that, A vibration motor is installed on the filter plate.

7. The solvent recovery device for a pharmaceutical raw material workshop as described in claim 5, characterized in that, The support block has a slot adapted to the filter plate, and multiple buffer balls are provided between the side wall of the slot and the filter plate.

8. The solvent recovery device for a pharmaceutical raw material workshop as described in claim 7, characterized in that, The buffer balls are made of flexible material, and multiple buffer balls work together to reset the filter plate; the support plate is positioned inside the outer shell by means of the connecting rod.

9. The solvent recovery device for a pharmaceutical raw material workshop as described in claim 1, characterized in that, A pressure rod is hinged to the support plate, and the pressure rod is used to attach the unwound filter screen to the support plate; an elastic element is connected between the pressure rod and the support plate, and a ball is connected to the end of the pressure rod.

10. The solvent recovery device for a pharmaceutical raw material workshop as described in claim 1, characterized in that, The outer shell has a discharge port, and a storage compartment is detachably connected to the discharge port. The storage compartment is located inside the storage compartment, and the bottom end of the filter plate extends to the discharge port.

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