A multi-stage pressure filtration device for pharmaceutical excipients

Abstract

This utility model relates to the field of pharmaceutical residue filtration technology, and discloses a multi-stage filtration device for pharmaceutical excipients, including a filter press box with a drainage trough at the bottom of the side wall of the filter press box. The technical solution of this utility model uses a hydraulic pusher to move a horizontal plate downwards, distributing four sets of pressure blocks at the ports of four filter cartridges, sealing the ports. A drive motor synchronously drives four sets of rotating shafts, causing the filter cartridges installed in the four mounting frames to undergo synchronous centrifugal motion, expelling the liquid contained in the pharmaceutical residue through centrifugal motion. After centrifugal motion, the operator can stop the drive motor and then operate the hydraulic pusher to move the pressure blocks at the bottom of the four limit rods downwards. By continuously squeezing the pharmaceutical residue inside the four filter cartridges, the water inside the residue is squeezed out again. Finally, the four pressure blocks are moved to the filter cartridge ports, and the filter cartridges are rotated again to break up the pharmaceutical residue inside. This allows the pressure blocks to repeatedly squeeze the pharmaceutical residue, ensuring that the liquid inside the residue is fully squeezed out.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical residue filtration technology, specifically a multi-stage filtration device for pharmaceutical excipients. Background Technology

[0002] Currently, in the field of medicinal residue treatment, the effective recovery of residual medicinal liquid in medicinal residue has always been a key issue in the industry. Medicinal residue not only contains a large number of reusable medicinal liquid components, but if it cannot be effectively recovered, it will not only cause waste of resources, but may also have an adverse impact on the environment. Traditional medicinal residue filtration methods mostly adopt single pressing or centrifugation, which have obvious limitations in the treatment of medicinal residue.

[0003] While the single pressing method can squeeze out some of the liquid from the residue through physical pressure, it is often difficult to completely squeeze out the liquid from the residue due to uneven pressure distribution and limited pressing time, resulting in a low liquid recovery rate.

[0004] While centrifugation alone can use centrifugal force to eject the liquid from the residue, during the centrifugation process, the residue tends to form a tight layer on the inner wall of the filter cartridge. This layer can hinder the further ejection of the liquid, especially for residues with high viscosity or fine particles, where the centrifugation effect is greatly reduced.

[0005] Therefore, we propose a multi-stage pressure filtration device for pharmaceutical excipients, which combines centrifugation and multiple pressing to achieve full recovery of medicinal liquid from pharmaceutical residue. Utility Model Content

[0006] The purpose of this invention is to provide a multi-stage pressure filtration device for pharmaceutical excipients, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage pressure filtration device for pharmaceutical excipients, comprising a pressure filtration chamber, a drainage groove provided at the bottom of the side wall of the pressure filtration chamber, four sets of equidistantly distributed rotating shafts rotatably mounted at the bottom of the pressure filtration chamber, mounting frames fixedly mounted on the top of the four sets of rotating shafts, filter cartridges detachably mounted within the four sets of mounting frames, a support fixedly mounted on the side wall of the pressure filtration chamber, a pressure filtration mechanism mounted on the top of the support, and a pressure block fixedly mounted on the bottom of the pressure filtration mechanism, the pressure block corresponding to the filter cartridge.

[0008] Optionally, the filter press mechanism includes four sets of equidistant limiting holes opened on the top of the support, limiting rods slidably installed in the four sets of limiting holes, a horizontal plate fixedly installed on the top of the four sets of limiting rods, a hydraulic push rod fixedly installed in the middle of the horizontal plate, and a pressure block fixedly installed at the bottom of the four sets of limiting rods.

[0009] By adopting the above technical solution, the medicinal liquid inside the residue can be fully squeezed out.

[0010] Optionally, the four sets of pressure blocks correspond to the four sets of filter cartridge ports respectively, and the other end of the hydraulic push rod is fixedly installed in the middle of the bracket. The hydraulic push rod is driven by a hydraulic station.

[0011] By adopting the above technical solution, the four sets of pressure blocks can be moved up and down simultaneously.

[0012] Optionally, the sidewall of the mounting frame is composed of filter frames, and each set of mounting frames has four sets of equally spaced insertion holes at the bottom. Each set of filter cylinders has four sets of equally spaced insertion posts fixedly installed at the bottom, with the four adjacent sets of insertion posts corresponding to the four adjacent sets of insertion holes.

[0013] By adopting the above technical solution, the filter cartridge can be easily installed and disassembled.

[0014] Optionally, a linkage box is fixedly installed at the bottom of the filter press box, and four sets of equidistant linkage shafts are rotatably installed inside the linkage box. Adjacent sets of linkage shafts are connected by a transmission belt, and the four sets of linkage shafts are fixedly connected to four sets of rotating shafts respectively.

[0015] By adopting the above technical solution, the four sets of linkage shafts can rotate synchronously.

[0016] Optionally, a motor is fixedly installed on one side of the bottom of the linkage box, the motor drive output end is connected to the transmission shaft, and the other end of the transmission shaft is fixedly connected to a set of linkage shafts.

[0017] By adopting the above technical solution, the linkage shaft can be driven to rotate.

[0018] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0019] The technical solution of this application uses a hydraulic pusher to move a horizontal plate downward, so that four sets of pressure blocks are distributed at the ports of four filter cartridges, sealing the ports of the four filter cartridges. The drive motor synchronously drives the four sets of rotating shafts to rotate, so that the filter cartridges installed in the four mounting frames perform centrifugal motion synchronously, throwing out the medicinal liquid contained in the residue through centrifugal motion. After the centrifugal motion is completed, the operator can stop the drive motor and then operate the hydraulic pusher to move the pressure blocks at the bottom of the four sets of limit rods downward. By continuously squeezing the residue inside the four sets of filter cartridges, the water inside the residue is squeezed out again. Finally, the four sets of pressure blocks are moved to the ports of the filter cartridges, and the filter cartridges are rotated again to break up the residue inside the filter cartridges. The pressure blocks can repeatedly squeeze the residue, ensuring that the medicinal liquid inside the residue can be fully squeezed out.

[0020] The linkage box contains four sets of equidistant linkage shafts, each connected by a transmission belt. When the operator drives the motor, one set of linkage shafts can rotate. Since the two sets of linkage shafts are connected by a transmission belt, they can synchronously drive the rotating shafts fixedly connected to the top of the four sets of linkage shafts to rotate. This not only causes the filter cartridges installed on the top of the four sets of rotating shafts to undergo centrifugal motion, but also disperses the dregs inside the filter cartridges. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of a multi-stage pressure filtration device for pharmaceutical excipients according to this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the filter press box of a multi-stage filter press device for pharmaceutical excipients according to this utility model;

[0024] Figure 3 This is a schematic diagram of the filter cylinder and pressure block structure of a multi-stage pressure filtration device for pharmaceutical excipients according to this utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the linkage box of a multi-stage pressure filtration device for pharmaceutical excipients according to this utility model.

[0026] In the diagram: 1. Filter press box; 11. Rotating shaft; 12. Mounting frame; 13. Insertion hole; 14. Insertion column; 15. Filter cartridge; 2. Support; 21. Limiting hole; 22. Limiting rod; 23. Horizontal plate; 24. Hydraulic push rod; 25. Press block; 3. Linkage box; 31. Linkage shaft; 32. Transmission belt; 33. Motor. Detailed Implementation

[0027] Please see Figure 1-4This utility model provides a technical solution: a multi-stage pressure filtration device for pharmaceutical excipients, including a pressure filtration chamber 1. A drainage groove is provided at the bottom of the side wall of the pressure filtration chamber 1. Four sets of equidistantly distributed rotating shafts 11 are rotatably mounted at the bottom of the pressure filtration chamber 1. Mounting frames 12 are fixedly mounted on the top of the four sets of rotating shafts 11. Filter cartridges 15 are detachably mounted within the four sets of mounting frames 12. A support 2 is fixedly mounted on the side wall of the pressure filtration chamber 1. A pressure filtration mechanism is mounted on the top of the support 2. A pressure block 25 is fixedly mounted on the bottom of the pressure filtration mechanism. The pressure block 25 corresponds to the filter cartridge 15. The pressure filtration mechanism includes components on the top of the support 2. The four sets of equidistant limiting holes 21, the limiting rods 22 that are slidably installed in the four sets of limiting holes 21, the horizontal plates 23 that are fixedly installed on the top of the four sets of limiting rods 22, the hydraulic push rods 24 that are fixedly installed in the middle of the horizontal plates 23, and the pressure blocks 25 that are fixedly installed at the bottom of the four sets of limiting rods 22 can fully squeeze out the liquid medicine inside the residue. The four sets of pressure blocks 25 correspond to the ports of the four sets of filter cartridges 15 respectively. The other end of the hydraulic push rod 24 is fixedly installed in the middle of the bracket 2. The hydraulic push rod 24 is driven by a hydraulic station and can synchronously push the four sets of pressure blocks 25 to move up and down.

[0028] By driving the hydraulic push rod 24 to push the horizontal plate 23 downward, the four sets of pressure blocks 25 are distributed at the ports of the four sets of filter cylinders 15, sealing the ports of the four sets of filter cylinders 15. The drive motor 33 synchronously drives the four sets of rotating shafts 11 to rotate, so that the filter cylinders 15 installed in the four sets of mounting frames 12 synchronously perform centrifugal motion, throwing out the medicinal liquid contained in the dregs through centrifugal motion. After the centrifugal motion is completed, the operator can stop the drive motor 33 and then operate the hydraulic push rod 24 to push the pressure blocks 25 at the bottom of the four sets of limit rods 22 downward. By continuously squeezing the dregs inside the four sets of filter cylinders 15, the water inside the dregs is squeezed out again. Finally, the four sets of pressure blocks 25 are moved to the ports of the filter cylinders 15, and the filter cylinders 15 are rotated again to break up the dregs inside the filter cylinders 15. The pressure blocks 25 can repeatedly squeeze the dregs to ensure that the medicinal liquid inside the dregs can be fully squeezed out.

[0029] In this technical solution, a linkage box 3 is fixedly installed at the bottom of the filter press box 1. Four sets of equidistant linkage shafts 31 are rotatably installed inside the linkage box 3. Adjacent sets of linkage shafts 31 are connected by transmission belts 32. The four sets of linkage shafts 31 are fixedly connected to four sets of rotating shafts 11, so that the four sets of linkage shafts 31 can rotate synchronously.

[0030] When the operator drives the motor 33, it can drive a set of linkage shafts 31 to rotate. Since the two adjacent sets of linkage shafts 31 are connected by the transmission belt 32, they can synchronously drive the rotating shafts 11 fixedly connected to the top of the four sets of linkage shafts 31 to rotate. This not only makes the filter cartridges 15 installed on the top of the four sets of rotating shafts 11 centrifugal, but also breaks up the dregs inside the filter cartridges 15.

[0031] In this technical solution, the sidewall of the mounting frame 12 is composed of filter frames. Each set of mounting frames 12 has four sets of equally spaced insertion holes 13 at the bottom. Each set of filter cartridges 15 has four sets of equally spaced insertion posts 14 fixedly installed at the bottom. The four adjacent sets of insertion posts 14 correspond to the four adjacent sets of insertion holes 13, which facilitates the installation and disassembly of the filter cartridges 15.

[0032] When the operator holds the outside of the filter cartridge 15, the four sets of inserts 14 on the filter cartridge 15 are inserted into the four sets of holes 13 at the bottom of the mounting frame 12. The filter cartridge 15 can be quickly positioned in the mounting frame 12. When the operator needs to remove the dregs, the inserts 14 in the holes 13 can be pulled out directly, and the filter cartridge 15 can be quickly removed.

[0033] In this technical solution, a motor 33 is fixedly installed on one side of the bottom of the linkage box 3. The drive output end of the motor 33 is connected to the transmission shaft, and the other end of the transmission shaft is fixedly connected to a set of linkage shafts 31, which can drive the linkage shafts 31 to rotate.

[0034] The drive motor 33 synchronously drives the four sets of rotating shafts 11 to rotate, so that the filter cartridges 15 installed in the four sets of mounting frames 12 can perform centrifugal motion synchronously, and the medicinal liquid contained in the residue can be thrown out through centrifugal motion.

[0035] In use, the medicinal residue to be filtered is first poured into the four sets of filter cylinders 15 in batches. The hydraulic push rod 24 pushes the horizontal plate 23 downward, causing the four sets of limiting rods 22 to press the pressure blocks 25 along the direction of the limiting holes 21. The four sets of pressure blocks 25 are distributed at the ports of the four sets of filter cylinders 15, sealing the ports of the four sets of filter cylinders 15. The drive motor 33 synchronously drives the four sets of rotating shafts 11 to rotate, causing the filter cylinders 15 installed in the four sets of mounting frames 12 to perform centrifugal motion synchronously. The medicinal liquid contained in the residue is thrown out by the centrifugal motion. After the centrifugal motion is completed, the operator can stop the drive motor 33 and then operate the hydraulic push rod 24 to push the pressure blocks 25 at the bottom of the four sets of limiting rods 22 downward. By continuously squeezing the medicinal residue inside the four sets of filter cylinders 15, the water inside the residue is squeezed out again. Finally, move the four sets of pressing blocks 25 to the port of the filter cylinder 15, and rotate the filter cylinder 15 again to break up the dregs inside the filter cylinder 15. This allows the pressing blocks 25 to repeatedly squeeze the dregs, ensuring that the liquid inside the dregs can be fully squeezed out. At the same time, four sets of equally spaced linkage shafts 31 are rotatably installed inside the linkage box 3, and adjacent sets of linkage shafts 31 are connected by a transmission belt 32. When the operator drives the motor 33, it can drive one set of linkage shafts 31 to rotate. Since adjacent sets of linkage shafts 31 are connected by a transmission belt 32, they can synchronously drive the rotating shafts 11 fixedly connected to the top of the four sets of linkage shafts 31 to rotate. This not only causes the filter cylinder 15 installed on the top of the four sets of rotating shafts 11 to perform centrifugal motion, but also breaks up the dregs inside the filter cylinder 15.

Claims

1. A multi-stage pressure filtration device for pharmaceutical excipients, comprising a pressure filtration chamber (1), characterized in that: The filter press (1) has a drain trough at the bottom of its side wall. Four sets of equally spaced rotating shafts (11) are rotatably installed at the bottom of the filter press (1). Mounting frames (12) are fixedly installed on the top of the four sets of rotating shafts (11). Filter cartridges (15) are detachably installed inside the four sets of mounting frames (12). A bracket (2) is fixedly installed on the side wall of the filter press (1). A filter pressing mechanism is installed on the top of the bracket (2). A pressure block (25) is fixedly installed at the bottom of the filter pressing mechanism. The pressure block (25) corresponds to the filter cartridge (15).

2. The multi-stage pressure filtration device for pharmaceutical excipients according to claim 1, characterized in that: The filter press mechanism includes four sets of equidistant limiting holes (21) opened on the top of the support (2), limiting rods (22) slidably installed in the four sets of limiting holes (21), a horizontal plate (23) fixedly installed on the top of the four sets of limiting rods (22), a hydraulic push rod (24) fixedly installed in the middle of the horizontal plate (23), and a pressure block (25) fixedly installed at the bottom of the four sets of limiting rods (22).

3. The multi-stage pressure filtration device for pharmaceutical excipients according to claim 2, characterized in that: The four sets of pressure blocks (25) correspond to the ports of the four sets of filter cartridges (15) respectively. The other end of the hydraulic push rod (24) is fixedly installed in the middle of the bracket (2). The hydraulic push rod (24) is driven by a hydraulic station.

4. The multi-stage pressure filtration device for pharmaceutical excipients according to claim 1, characterized in that: The side wall of the mounting frame (12) is composed of filter frames. Each set of mounting frames (12) has four sets of equally spaced insertion holes (13) at the bottom. Each set of filter cylinders (15) has four sets of equally spaced insertion posts (14) fixedly installed at the bottom. The four adjacent sets of insertion posts (14) correspond to the four adjacent sets of insertion holes (13).

5. A multi-stage pressure filtration device for pharmaceutical excipients according to claim 1, characterized in that: The filter press (1) is fixedly installed with a linkage box (3) at the bottom. Inside the linkage box (3), four sets of equally spaced linkage shafts (31) are rotatably installed. The two adjacent sets of linkage shafts (31) are connected by a transmission belt (32). The four sets of linkage shafts (31) are fixedly connected to four sets of rotating shafts (11).

6. A multi-stage pressure filtration device for pharmaceutical excipients according to claim 5, characterized in that: A motor (33) is fixedly installed on one side of the bottom of the linkage box (3). The output end of the motor (33) is connected to the transmission shaft, and the other end of the transmission shaft is fixedly connected to a set of linkage shafts (31).

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