Mother liquor recovery equipment for production of flurbixifen-methyl intermediate

Abstract

The utility model discloses mother liquor recovery equipment for production of a fluoropyridine ester intermediate, which belongs to the technical field of mother liquor recovery and comprises a centrifugal filter cartridge, and an upper-layer filter cartridge is arranged on the centrifugal filter cartridge; when mother liquor enters the centrifugal filter cartridge, the mother liquor is centrifugally filtered in the centrifugal filter cartridge, different components in the mother liquor are separated according to density difference under the action of centrifugal force, the middle mother liquor enters the upper filter cartridge in the centrifugal filtering process, and the upper filter cartridge plays a role in further filtering. The spiral guide plate outside the upper-layer filter cartridge plays an important role, when the mother liquor passes through the upper-layer filter cartridge, the spiral guide plate guides the mother liquor to form spiral flow, and the flowing mode enables the mother liquor to be in more sufficient contact with the wall of the filter cartridge in the filtering process, so that the filtering effect is improved. The filtering efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mother liquor recovery technology, specifically relating to a mother liquor recovery device for the production of fluoropyridine ester intermediates. Background Technology

[0002] Fluoropyridine ester intermediate production mother liquor refers to a liquid mixture containing unreacted raw materials, reaction byproducts, catalysts, and other impurities generated during the production of fluoropyridine ester intermediates.

[0003] In existing mother liquor recovery technologies, traditional filtration equipment has many shortcomings when processing mother liquor from the production of fluoropyridine ester intermediates. For example, ordinary filtration devices often have low filtration efficiency, are prone to filter clogging, leading to unstable equipment operation and high maintenance costs. Moreover, many existing devices cannot effectively separate and process different components in the mother liquor, resulting in low purity of the recovered product and affecting subsequent reuse. Therefore, a mother liquor recovery device for the production of fluoropyridine ester intermediates is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a mother liquor recovery device for the production of fluoropyridine ester intermediates, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mother liquor recovery device for the production of fluoropyridine ester intermediates, comprising a centrifugal filter cylinder, an upper filter cylinder disposed on the upper part of the centrifugal filter cylinder, a spiral guide plate disposed on the outside of the upper filter cylinder, the top end of the spiral guide plate being fixedly disposed inside the centrifugal filter cylinder, a first connecting plate being fixedly disposed on the outside of the upper filter cylinder, the first connecting plate having multiple first fixing holes, two rubber sealing rings being fixedly disposed on the first connecting plate, multiple threaded rods being fixedly disposed on the centrifugal filter cylinder, the first connecting plate being inserted into the multiple threaded rods through the multiple first fixing holes, and a feed pipe being disposed on one side of the centrifugal filter cylinder.

[0006] By incorporating an upper filter cartridge, when the mother liquor enters the centrifugal filter cartridge, it first undergoes centrifugal filtration. Under the action of centrifugal force, different components in the mother liquor begin to separate according to their density differences. During the centrifugal filtration process, the middle portion of the mother liquor flows into the upper filter cartridge, which further filters the liquor, intercepting any remaining fine impurities and ensuring the purity of the discharged mother liquor. The spiral guide plate on the outside of the upper filter cartridge plays a crucial role. As the mother liquor passes through the upper filter cartridge, the spiral guide plate guides the mother liquor to form a spiral flow. This flow pattern allows the mother liquor to make more thorough contact with the filter cartridge wall during filtration, improving filtration efficiency. At the same time, the centrifugal force generated by the spiral flow further enhances the separation effect of different components in the mother liquor, ensuring that the effective components can be better separated and recovered. Through this design, the equipment effectively overcomes the problems of low filtration efficiency, easy clogging, and insufficient component separation in existing mother liquor recovery technologies. It significantly improves the purity and efficiency of mother liquor recovery from fluoropyridine ester intermediate production, reducing resource waste and environmental pollution.

[0007] In a preferred embodiment, the first fixing hole is located between the two rubber sealing rings, and a discharge pipe is connected to the upper filter cylinder, with a second connecting plate fixedly installed on the outside of the discharge pipe.

[0008] In a preferred embodiment, the second connecting plate has a plurality of second fixing holes, and the second connecting plate is sleeved on a plurality of threaded rods through the plurality of second fixing holes.

[0009] In a preferred embodiment, the second connecting plate presses against the rubber sealing ring on the first connecting plate, each threaded rod is provided with a fixing nut, and a positioning ring block is fixedly provided at the bottom end of the discharge pipe.

[0010] In a preferred embodiment, a storage cylinder is connected to the bottom end of the centrifugal filter cylinder, and multiple support legs are fixedly provided on the lower surface of the storage cylinder.

[0011] In a preferred embodiment, a support frame is fixedly provided on the storage cylinder, and the centrifugal filter cylinder is externally fixedly provided on the support frame.

[0012] By setting a second connecting plate and a first connecting plate, the positioning ring block is precisely inserted into the inner rubber sealing ring, providing a reliable positioning benchmark for the discharge pipe and the upper filter cylinder. During installation, the position can be quickly located and assembly can be completed, effectively shortening the equipment assembly time. When it is necessary to clean or repair the upper filter cylinder or the discharge pipe, simply loosen the fixing nut on the threaded rod to easily separate the second connecting plate from the first connecting plate, allowing the discharge pipe and the upper filter cylinder to be disassembled as a whole. This facilitates thorough cleaning of any remaining impurities and dirt, ensuring that the equipment's filtration performance remains stable and reliable. The first fixing hole is located between the two rubber sealing rings, further enhancing the sealing effect during equipment operation, preventing mother liquor leakage, and avoiding corrosion and damage to components caused by mother liquor residue during disassembly. The synergistic effect of each component greatly improves the ease of disassembly and assembly and the efficiency of cleaning.

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

[0014] This invention, by incorporating an upper filter cartridge, allows for centrifugal filtration of the mother liquor upon entry. Under centrifugal force, different components in the mother liquor separate based on density differences. During this process, the intermediate portion of the mother liquor flows into the upper filter cartridge, which further filters the liquor, intercepting any remaining fine impurities and ensuring the purity of the discharged mother liquor. The spiral guide plate on the outside of the upper filter cartridge plays a crucial role, guiding the mother liquor through a spiral flow. This flow pattern allows for more thorough contact between the mother liquor and the filter cartridge wall, improving filtration efficiency. Simultaneously, the centrifugal force generated by the spiral flow further enhances the separation of different components in the mother liquor, ensuring better separation and recovery of the effective components. This design effectively overcomes the problems of low filtration efficiency, easy clogging, and insufficient component separation in existing mother liquor recovery technologies, significantly improving the purity and efficiency of mother liquor recovery from fluoropyridine ester intermediate production, and reducing resource waste and environmental pollution.

[0015] This invention, by setting a second connecting plate and a first connecting plate, with the positioning ring block precisely inserted into the inner rubber sealing ring, provides a reliable positioning benchmark for the discharge pipe and the upper filter cylinder. During installation, the position can be quickly located and assembly completed, effectively shortening the equipment assembly time. When it is necessary to clean or repair the upper filter cylinder or the discharge pipe, simply loosen the fixing nut on the threaded rod to easily separate the second connecting plate from the first connecting plate, allowing the discharge pipe and the upper filter cylinder to be disassembled as a whole. This facilitates thorough cleaning of any remaining impurities and dirt, ensuring that the equipment's filtration performance remains stable and reliable. The first fixing hole is located between the two rubber sealing rings, further enhancing the sealing effect during equipment operation, preventing mother liquor leakage, and avoiding corrosion and damage to components caused by mother liquor residue during disassembly. The synergistic effect of all components greatly improves the ease of disassembly and assembly and the efficiency of cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of a portion of the present invention;

[0018] Figure 3 This utility model Figure 2 A magnified schematic diagram of the three-dimensional structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the threaded rod of this utility model;

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the upper filter cartridge of this utility model;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the second connecting plate of this utility model.

[0022] In the diagram: 1. Centrifugal filter cylinder; 2. Upper filter cylinder; 3. Spiral guide plate; 4. First connecting plate; 5. First fixing hole; 6. Rubber sealing ring; 7. Threaded rod; 8. Feed pipe; 9. Discharge pipe; 10. Second connecting plate; 11. Second fixing hole; 12. Fixing nut; 13. Positioning ring block; 14. Storage cylinder; 15. Support leg; 16. Support frame. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments.

[0024] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0025] Please see Figure 1-6 This utility model provides a mother liquor recovery device for the production of fluoropyridine ester intermediates, including a centrifugal filter cylinder 1, an upper filter cylinder 2 on top of the centrifugal filter cylinder 1, a spiral guide plate 3 on the outside of the upper filter cylinder 2, the top end of the spiral guide plate 3 fixed inside the centrifugal filter cylinder 1, a first connecting plate 4 fixedly on the outside of the upper filter cylinder 2, the first connecting plate 4 having multiple first fixing holes 5, two rubber sealing rings 6 fixedly on the first connecting plate 4, multiple threaded rods 7 fixedly on the centrifugal filter cylinder 1, the first connecting plate 4 being inserted into the multiple threaded rods 7 through the multiple first fixing holes 5, and a feed pipe 8 on one side of the centrifugal filter cylinder 1. By using the upper filter cylinder 2, when the mother liquor enters the centrifugal filter cylinder 1, it first undergoes centrifugal filtration in the centrifugal filter cylinder 1. Under the action of centrifugal force, different components in the mother liquor begin to separate according to their density differences. During the filtration process, the intermediate mother liquor flows into the upper filter cylinder 2, which further filters the mother liquor, intercepting any remaining fine impurities and ensuring the purity of the discharged mother liquor. The spiral guide plate 3 on the outside of the upper filter cylinder 2 plays a crucial role. As the mother liquor passes through the upper filter cylinder 2, the spiral guide plate 3 guides the mother liquor to form a spiral flow. This flow pattern allows the mother liquor to make more thorough contact with the filter cylinder wall during filtration, improving filtration efficiency. At the same time, the centrifugal force generated by the spiral flow further enhances the separation effect of different components in the mother liquor, ensuring that the effective components can be better separated and recovered. Through this design, the equipment effectively overcomes the problems of low filtration efficiency, easy clogging, and insufficient component separation in existing mother liquor recovery technologies, significantly improving the purity and efficiency of mother liquor recovery from fluoropyridine ester intermediate production, and reducing resource waste and environmental pollution.

[0026] The first fixing hole 5 is located between two rubber sealing rings 6. The upper filter cylinder 2 is connected to a discharge pipe 9, and a second connecting plate 10 is fixedly installed on the outside of the discharge pipe 9.

[0027] The second connecting plate 10 has multiple second fixing holes 11, and the second connecting plate 10 is sleeved on multiple threaded rods 7 through the multiple second fixing holes 11.

[0028] The second connecting plate 10 presses against the rubber sealing ring 6 on the first connecting plate 4. Each threaded rod 7 is provided with a fixing nut 12, and the bottom end of the discharge pipe 9 is fixedly provided with a positioning ring block 13.

[0029] The bottom end of the centrifugal filter cylinder 1 is connected to a storage cylinder 14, and multiple support legs 15 are fixedly installed on the lower surface of the storage cylinder 14.

[0030] A support frame 16 is fixedly installed on the storage cylinder 14. The centrifugal filter cylinder 1 is externally fixed on the support frame 16. By setting the second connecting plate 10 and the first connecting plate 4, the positioning ring block 13 is precisely inserted into the inner rubber sealing ring 6, providing a reliable positioning reference for the discharge pipe 9 and the upper filter cylinder 2. During installation, the position can be quickly found and the assembly can be completed, effectively shortening the equipment assembly time. When it is necessary to clean or repair the upper filter cylinder 2 or the discharge pipe 9, simply loosen the fixing nut 12 on the threaded rod 7 to easily separate the second connecting plate 10 from the first connecting plate 4, so that the discharge pipe 9 and the upper filter cylinder 2 can be disassembled as a whole, making it easy to thoroughly clean any impurities and dirt that may remain inside, ensuring that the filtration performance of the equipment is always stable and reliable. The first fixing hole 5 is located between the two rubber sealing rings 6, which further enhances the sealing effect during equipment operation, prevents mother liquor leakage, and also avoids corrosion and damage to the components caused by mother liquor residue during disassembly. The synergistic effect of each component greatly improves the ease of disassembly and assembly and the cleaning efficiency of the equipment.

[0031] The working principle and usage process of this utility model are as follows: First, the mother liquor enters the centrifugal filter cylinder 1 through the feed pipe 8. The impact force of the incoming water causes the mother liquor inside the centrifugal filter cylinder 1 to centrifuge and rotate, and the different components in the mother liquor begin to separate initially. During the centrifugation process, the middle part of the mother liquor flows upward into the upper filter cylinder 2. The spiral guide plate 3 on the outside of the upper filter cylinder 2 causes the mother liquor to rise in a spiral shape, prolonging the contact time between the mother liquor and the upper filter cylinder 2, enhancing the filtration effect and further promoting component separation. The upper filter cylinder 2 is connected to the centrifugal filter cylinder 1 through the first connecting plate 4. The first fixing hole 5 of the first connecting plate 4 is fitted onto the threaded rod 7 of the centrifugal filter cylinder 1 and is located at the two rubber seals. Between the sealing rings 6, the connection is sealed. The filtered mother liquor is discharged through the discharge pipe 9. In addition, the second connecting plate 10 of the discharge pipe 9 is fitted onto the threaded rod 7 through the second fixing hole 11. Its positioning ring block 13 is inserted into the inner rubber sealing ring 6 for positioning, and then tightened by the fixing nut 12 to ensure that the discharge pipe 9 is stable and sealed. The storage cylinder 14 at the bottom of the centrifugal filter cylinder 1 is supported by the support frame 16 and is stably standing on the ground by the support leg 15. It is used to collect the residual material after centrifugal filtration. During equipment maintenance, the fixing nut 12 can be loosened in sequence to easily disassemble the discharge pipe 9 and the upper filter cylinder 2 for cleaning. The centrifugal filter cylinder 1 and the storage cylinder 14 can also be maintained separately.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mother liquor recovery device for the production of fluoropyridine ester intermediates, comprising a centrifugal filter cartridge (1), characterized in that: The centrifugal filter cylinder (1) is provided with an upper filter cylinder (2), and a spiral guide plate (3) is provided on the outside of the upper filter cylinder (2). The top end of the spiral guide plate (3) is fixedly installed inside the centrifugal filter cylinder (1). A first connecting plate (4) is fixedly installed on the outside of the upper filter cylinder (2). The first connecting plate (4) has multiple first fixing holes (5). Two rubber sealing rings (6) are fixedly installed on the first connecting plate (4). Multiple threaded rods (7) are fixedly installed on the centrifugal filter cylinder (1). The first connecting plate (4) is inserted into the multiple threaded rods (7) through the multiple first fixing holes (5). A feed pipe (8) is provided on one side of the centrifugal filter cylinder (1).

2. The mother liquor recovery equipment for the production of fluoropyridine ester intermediates according to claim 1, characterized in that: The first fixing hole (5) is located between the two rubber sealing rings (6), and the upper filter cylinder (2) is connected to the discharge pipe (9), and the discharge pipe (9) is fixedly provided with a second connecting plate (10).

3. The mother liquor recovery equipment for the production of fluoropyridine ester intermediates according to claim 2, characterized in that: The second connecting plate (10) has multiple second fixing holes (11), and the second connecting plate (10) is sleeved on multiple threaded rods (7) through the multiple second fixing holes (11).

4. The mother liquor recovery equipment for the production of fluoropyridine ester intermediates according to claim 2, characterized in that: The second connecting plate (10) presses against the rubber sealing ring (6) on the first connecting plate (4), and each threaded rod (7) is provided with a fixing nut (12). The bottom end of the discharge pipe (9) is fixedly provided with a positioning ring block (13).

5. The mother liquor recovery equipment for the production of fluoropyridine ester intermediates according to claim 1, characterized in that: The bottom end of the centrifugal filter cylinder (1) is connected to a storage cylinder (14), and a plurality of support legs (15) are fixedly provided on the lower surface of the storage cylinder (14).

6. The mother liquor recovery equipment for the production of fluoropyridine ester intermediates according to claim 5, characterized in that: A support frame (16) is fixedly installed on the storage cylinder (14), and the centrifugal filter cylinder (1) is fixedly installed on the support frame (16).

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