Continuous refining automatic production line for 5-sulfoisophthalic acid sodium mother liquor

Abstract

The present invention discloses an isophthalic acid-5-sodium sulfonate mother liquor continuous refining automatic production line, and relates to the technical field of chemical processing production, the isophthalic acid-5-sodium sulfonate mother liquor continuous refining automatic production line comprises a bottom frame, an outer shell is arranged on the bottom frame, two through holes are formed in the bottom of the outer shell, and two inner shells are arranged in the outer shell; the bottom of the inner shell is provided with a through hole which is coaxial with the through hole to form a mounting channel; the two mounting channels are each internally provided with a channel pipe, the top of each channel pipe rotationally communicates with a filter cartridge, and a material blocking assembly is arranged in each channel pipe; a feeding assembly, a driving assembly and two scraping assemblies are further arranged in the outer shell, each scraping assembly is matched with the corresponding filter cartridge, one output end of the driving assembly is connected with the corresponding filter cartridge, the other output end of the driving assembly is connected with a material scattering assembly, and the two material scattering assemblies are rotationally communicated with one discharging end of the feeding assembly. The device can realize continuous and automatic production operation of the isophthalic acid-5-sodium sulfonate, and isophthalic acid-5-sodium sulfonate crystals and mother liquor obtained after separation can be automatically separated.

Description

Technical Field

[0001] This invention relates to the field of chemical processing and production technology, and more specifically, to an automated production line for the continuous refining of sodium isophthalic acid-5-sulfonate mother liquor. Background Technology

[0002] Sodium isophthalate-5-sulfonate plays an important role in the chemical industry, widely used in polyester fibers, plastics, dyes, and other industries, and is crucial for improving the performance and quality of related products. After sodium isophthalate-5-sulfonate crystals are crystallized, the mixture of sodium isophthalate-5-sulfonate crystals needs to be centrifuged to finally obtain sodium isophthalate-5-sulfonate crystals and mother liquor.

[0003] In the existing technology, in order to meet the production requirements of sodium isophthalic acid-5-sulfonate, a large number of centrifuges are needed to intermittently process the sodium isophthalic acid-5-sulfonate crystal mixture. In use, after one centrifuge finishes its operation, the sodium isophthalic acid-5-sulfonate crystal mixture is immediately transferred to another centrifuge. This requires on-site operation by personnel, and the sodium isophthalic acid-5-sulfonate crystals obtained from the previous centrifuge need to be separated from the mother liquor, resulting in a large workload and greatly reducing the centrifugation separation efficiency of the sodium isophthalic acid-5-sulfonate crystal mixture. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art, and thus proposes an automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor.

[0005] The technical solution adopted by this invention to solve its technical problem is: An automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor includes: Base frame; The outer casing has two openings at the bottom and a drain pipe on the side; The inner shell has two parts, with the top open and fixed inside the outer shell. The bottom of the inner shell has a through hole coaxial with the opening to form an installation channel. The bottom of the inner shell also has a liquid guide tube. There are two channel tubes, both open at the top and bottom, each vertically installed in an installation channel. The top of the channel tube extends into the inner shell and is rotatably connected to a filter cylinder that is open at both the top and bottom. The material blocking assembly consists of two sets, each installed inside a channel pipe. In state one, it blocks the bottom of the filter cylinder, and in state two, it opens the bottom of the filter cylinder to form a material discharge space between the filter cylinder and the channel pipe. The feeding assembly has one set located on the top of the housing and has two feeding ends, which alternate feeding actions; The drive assembly consists of two sets, both housed within the housing, and has two output terminals, one of which is connected to the filter cartridge. There are two sets of bulk material assemblies, each located above a filter cylinder, and each is rotatably connected to one discharge end of the feeding assembly, and each is connected to the other output end of a set of drive assemblies; There are two scraping components, each housed within the outer casing and paired with a filter cartridge.

[0006] Furthermore, the above solution includes: Mounting rod, installed inside the channel tube; Telescopic cylinder one, vertically mounted on the mounting rod; Mounting base, connected to one telescopic end of the telescopic cylinder; The rotating roller is vertically mounted on the mounting base. The blocking plate is located on top of the rotating roller. When the telescopic cylinder extends, the blocking plate contacts the bottom of the filter cylinder to seal the bottom of the filter cylinder. When the telescopic cylinder retracts, the blocking plate moves away from the bottom of the filter cylinder to form a feeding space for sodium isophthalic acid-5-sulfonate crystals.

[0007] Furthermore, the above solution includes a tapered material blocking plate to improve the feeding efficiency of sodium isophthalic acid-5-sulfonate crystals and reduce the accumulation of sodium isophthalic acid-5-sulfonate crystals on the blocking plate.

[0008] Furthermore, in the above solution, the feeding assembly includes: The feed pipe is vertically installed at the top of the outer casing and its top extends above the outer casing. The feed tube is one that is located inside the outer casing and is closed at both ends, and is connected to the bottom end of the feed tube; There are two solenoid valves, both of which are installed on the feed pipe, and the two solenoid valves open and close alternately. There are two branch pipes, both vertically connected to the feed pipe, and each is located outside a solenoid valve. There are two rotary joints, each located at the bottom of a branch pipe, and each of the two rotary joints is connected to a set of bulk material assembly.

[0009] Furthermore, in the above solution, the driving component includes: The drive motor is housed within the outer casing; A dual-shaft reducer, with its input end connected to the drive motor; Transmission unit 1 is connected to one of the output ends of the dual-shaft reducer and the filter cartridge; The second transmission unit is connected to the other output end of the dual-shaft reducer and the bulk material assembly.

[0010] Furthermore, the above solution includes: The vertical tube is connected at its top end to a rotary joint and also to the second transmission unit. The outer conical shell is connected to the bottom end of the vertical tube; The support is located inside the outer conical shell; The inner conical shell is installed on the bracket and fitted inside the outer conical shell, with its bottom extending below the outer conical shell, so that a material inlet space is formed between the inner and outer conical shells, which is connected to the vertical pipe and located directly above the filter cylinder.

[0011] Furthermore, the above-mentioned solution also includes: The platform, located at the bottom of the inner conical shell and extending outward by 1-3 cm, helps to better guide the flow of the sodium isophthalic acid-5-sulfonate crystal mixture, optimize the discharge effect, and at the same time increase the contact area and improve processing efficiency.

[0012] Furthermore, in the above solution, the scraper assembly includes: Telescopic cylinder two is vertically installed inside the outer shell and performs high-frequency reciprocating motion; Telescopic cylinder three is horizontally connected to the telescopic end of telescopic cylinder two. The vertical plate is connected to the three telescopic ends of the telescopic cylinder and is located inside the filter cylinder; There are several scrapers, which are set on a vertical plate.

[0013] Furthermore, the above solution includes an arc-shaped scraper with two scrapers arranged alternately to improve the scraping effect.

[0014] Furthermore, the above-mentioned solution includes a cone-shaped discharge hopper at the bottom of the outer shell, with the discharge hopper covered below the two openings, so that the sodium isophthalic acid-5-sulfonate crystals discharged through the two channel pipes can be discharged in a concentrated manner.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, by incorporating two sets of centrifugal filtration structures within the outer casing in conjunction with a feeding assembly, enables the alternating operation of the two sets of centrifugal filtration structures during the centrifugal filtration of a sodium isophthalic acid-5-sulfonate crystal mixture. The two feeding ends of the feeding assembly alternately feed the mixture. Once one set of centrifugal filtration structures completes the centrifugation of the sodium isophthalic acid-5-sulfonate crystal mixture, the other set immediately begins the centrifugation process. This arrangement allows for continuous centrifugal separation of the sodium isophthalic acid-5-sulfonate crystal mixture, and the resulting sodium isophthalic acid-5-sulfonate crystals and mother liquor are automatically separated. The operation is simple, significantly improving the processing efficiency of sodium isophthalic acid-5-sulfonate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram of the three-dimensional structure of the outer shell; Figure 3 This is a schematic diagram of the three-dimensional structure of the inner shell; Figure 4 This is a schematic diagram of the filter cartridge installation structure; Figure 5 for Figure 1 A magnified view of part A in the diagram; Figure 6 This is a three-dimensional structural diagram of the blockage assembly; Figure 7 This is a schematic diagram of the feeding assembly. Figure 8 for Figure 1 A magnified view of part B in the diagram; Figure 9 This is a schematic diagram of the three-dimensional structure of the bulk material assembly; Figure 10 This is a three-dimensional structural diagram of the scraping assembly; The components are as follows: 1. Base frame; 2. Outer shell; 21. Through port; 22. Drain pipe; 23. Discharge hopper; 3. Inner shell; 31. Perforation; 32. Guide pipe; 4. Channel pipe; 41. Filter cylinder; 5. Blocking assembly; 51. Mounting rod; 52. Telescopic cylinder one; 53. Mounting base; 54. Rotating roller; 55. Blocking plate; 6. Feeding assembly; 61. Feeding pipe; 62. Guide pipe; 63. Solenoid valve; 64. Branch pipe; 65. Rotary joint; 7. Drive assembly; 71. Drive motor; 72. Dual-shaft reducer; 73. Transmission part one; 74. Transmission part two; 8. Bulk assembly; 81. Vertical pipe; 82. Outer conical shell; 83. Support; 84. Inner conical shell; 85. Platform; 9. Scraper assembly; 91. Telescopic cylinder two; 92. Telescopic cylinder three; 93. Vertical plate; 94. Scraper. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. The present invention will be further described with reference to the accompanying drawings and embodiments: See attached document Figure 1 - Appendix Figure 4 As shown, the automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor includes: Base frame 1 serves to support the installation; The outer shell 2 has two openings 21 at the bottom and a drain pipe 22 on the side for the unified discharge of the mother liquor; The inner shell 3 has two parts with an open top and is fixedly installed inside the outer shell 2. The bottom of the inner shell 3 has a through hole 31 coaxial with the through port 21 to form an installation channel. The bottom of the inner shell 3 also has a liquid guide tube 32 for the discharge of mother liquor. There are two channel tubes 4, both of which are open at the top and bottom, and each is vertically installed in an installation channel. The top of the channel tube 4 extends into the inner shell 3 and is rotatably connected to a filter cylinder 41 that is open at both the top and bottom, so that the filter cylinder 41 can rotate horizontally inside the inner shell 3, so that the mother liquor entering it is filtered by centrifugation. The material blocking component 5 has two sets, each set in a channel pipe 4. In state one, it blocks the bottom of the filter cylinder 41. In state two, it opens the bottom of the filter cylinder 41 and forms a material discharge space with the channel pipe 4, so that sodium isophthalic acid-5-sulfonate crystals can fall into the outside of the outer shell 2 along the material discharge space. The feeding assembly 6 is a set located on the top of the housing 2 and has two feeding ends. The two feeding ends alternate feeding actions. When one feeding end feeds, the other feeding end stops feeding. The drive assembly 7 has two sets, both of which are housed inside the housing and have two output ends. One of the output ends is connected to the filter cartridge 41 so that the drive assembly 7 can operate to make the filter cartridge 41 rotate in the horizontal direction, thereby generating a rotational driving force for the filter cartridge 41. There are two sets of bulk material components 8, each located above a filter cylinder 41, and each is rotatably connected to one discharge end of the feed component 6 to allow the sodium isophthalic acid-5-sulfonate crystal mixture to enter it. Each is also connected to the other output end of a set of drive components 7 so that the operation of the drive components 7 can cause the bulk material components 8 to rotate, dispersing the sodium isophthalic acid-5-sulfonate crystal mixture inside into the filter cylinder 41 through centrifugal rotation. There are two scraping components 9, each set inside the outer casing 2, and each is configured to work with a filter cylinder 41. When the corresponding material dispensing component 8 is discharging material, it moves away from the filter cylinder 41. When the corresponding material dispensing component 8 stops discharging material, it moves closer to the filter cylinder 41, thereby scraping the sodium isophthalic acid-5-sulfonate crystals on the inner wall of the filter cylinder 41. When the scraping action is performed, the blocking component 5 is in state two, and the sodium isophthalic acid-5-sulfonate crystals can fall along the discharging space to the outside of the outer casing 2.

[0018] Among them, the corresponding inner shell 3, channel pipe 4, filter cylinder 41, material blocking component 5, drive component 7, material dispersing component 8 and scraping component 9 are combined to form a centrifugal filtration structure. The present invention realizes continuous centrifugal operation of sodium isophthalic acid-5-sulfonate crystal mixture by using two centrifugal filtration structures in conjunction with the feeding component 6.

[0019] In the specific implementation process of this invention, the steps and principles are as follows: 1. First, one of the drive components 7 operates to make the corresponding filter cylinder 41 and the material dispersing component 8 rotate simultaneously. At the same time, the material blocking component 5 blocks the bottom of the filter cylinder 41 in state one. 2. Subsequently, the sodium isophthalic acid-5-sulfonate crystal mixture enters through the feeding assembly 6 and is discharged from one of the discharge ends of the feeding assembly 6 into the high-speed rotating bulk material assembly 8. Under the action of the high-speed rotating bulk material assembly 8, the sodium isophthalic acid-5-sulfonate crystal mixture inside is centrifuged and evenly dispersed into the corresponding filter cylinder 41. With the cooperation of the high-speed rotating filter cylinder 41, the sodium isophthalic acid-5-sulfonate crystal mixture in the filter cylinder 41 forms a mother liquor and sodium isophthalic acid-5-sulfonate crystals. The mother liquor flows to the bottom of the outer shell 2 through the liquid guide pipe 32 and is finally discharged through the drain pipe 22. 3. After a period of time, one of the feeding ends of the feeding component 6 stops feeding. In this state, the number of sodium isophthalic acid-5-sulfonate crystals inside the filter cylinder 41 reaches its limit. At this time, the scraping component 9 and the blocking component 5 approach the filter cylinder 41 and cooperate with the high-speed rotating filter cylinder 41 to scrape the sodium isophthalic acid-5-sulfonate crystals inside the filter cylinder 41. At the same time, the blocking component 5 is in state two, and the sodium isophthalic acid-5-sulfonate crystals can fall along the feeding space to the outside of the outer shell 2 until the scraping operation of the filter cylinder 41 is completed. The corresponding drive component 7 also stops operating, the blocking component 5 is in state one, and the scraping component 9 is reset and moves away from the filter cylinder 41. 4. When one of the feeding ends of the feeding component 6 stops feeding, the other feeding end of the feeding component 6 starts feeding. Then, another set of drive components 7 operates, causing the corresponding filter cylinder 41 and the dispersing component 8 to rotate simultaneously. At the same time, the blocking component 5 blocks the bottom of the filter cylinder 41 in state one. Finally, the above steps 2-3 are repeated to achieve continuous centrifugation of the sodium isophthalic acid-5-sulfonate crystal mixture.

[0020] In order to ensure that the sodium isophthalate-5-sulfonate crystals discharged through the two channel tubes 4 can be fed in a concentrated manner, the following measures are taken, as per the appendix. Figure 1 As shown, the bottom of the outer shell 2 is provided with a cone-shaped discharge hopper 23, and the discharge hopper 23 is covered below the two openings 21.

[0021] Regarding the specific structure of the blocking component 5 in the above scheme, please refer to the appendix. Figure 5 and attached Figure 6 As shown, the blockage assembly 5 includes: Mounting rod 51 is installed inside channel tube 4; Telescopic cylinder 52 is vertically mounted on mounting rod 51; Mounting base 53 is connected to the telescopic end of telescopic cylinder 52; The rotating roller 54 is vertically rotatably mounted on the mounting base 53; The blocking plate 55 is located on top of the rotating roller 54. When the telescopic cylinder 52 extends, the blocking plate 55 contacts the bottom of the filter cylinder 41 to block the bottom of the filter cylinder 41. When the telescopic cylinder 52 retracts, the blocking plate 55 moves away from the bottom of the filter cylinder 41 to form a feeding space for sodium isophthalic acid-5-sulfonate crystals. The blocking plate 55 has a conical structure to improve the feeding effect of sodium isophthalic acid-5-sulfonate crystals and reduce the accumulation of sodium isophthalic acid-5-sulfonate crystals on the blocking plate 55. During implementation, the extension of the telescopic cylinder 52 causes the blocking plate 55 to move upward, thus sealing the bottom of the filter screen. The extension of the telescopic cylinder causes the blocking plate 55 to move downward. At this time, there is a distance between the blocking plate 55 and the bottom of the filter cylinder 41 and the inner wall of the channel pipe 4 (this distance can be determined according to actual production, which will not be elaborated in detail in this invention). Through this distance, a feeding space for the sodium isophthalic acid-5-sulfonate crystals can be formed. The blocking component 5 uses a lifting method to block the bottom of the filter cylinder 41, which can not only reduce the problem of material blockage, but also improve the discharge efficiency. In addition, during the process of sealing the bottom of the filter cylinder 41, the blocking plate 55 is rotatable, which allows it to rotate along with the filter cylinder 41, reducing the wear of the blocking plate 55.

[0022] Regarding the specific structure of the feeding component 6 in the above scheme, please refer to the appendix. Figure 1 and attached Figure 7 As shown, the feeding assembly 6 includes: The feed pipe 61 is vertically installed at the top of the outer shell 2 and extends to the top of the outer shell 2 for feeding the sodium isophthalic acid-5-sulfonate crystal mixture; The feed tube 62 is one that is located inside the outer casing 2 and is closed at both ends, and is connected to the bottom end of the feed tube 61. There are two solenoid valves 63, both of which are installed on the feed pipe 62, and the two solenoid valves 63 open and close alternately. Branch pipe 64 has two branches, both of which are vertically connected to the feed pipe 62 and are distributed outside a solenoid valve 63. There are two rotary joints 65, each located at the bottom of a branch pipe 64, and each of the two rotary joints 65 is connected to a set of bulk material assembly 8.

[0023] During implementation, the sodium isophthalic acid-5-sulfonate crystal mixture is fed through the feed pipe 61. At this time, one solenoid valve 63 is open and the other solenoid valve 63 is closed. Subsequently, the sodium isophthalic acid-5-sulfonate crystal mixture is diverted through the guide pipe 62 and flows into the branch pipe 64 with the solenoid valve 63 open, where it is discharged. After a period of time (the interval depends on actual production and is not limited in this invention), one solenoid valve 63 is closed and the other solenoid valve 63 is opened. At this time, the sodium isophthalic acid-5-sulfonate crystal mixture is diverted through the guide pipe 62 and flows into the branch pipe 64 with the solenoid valve 63 open, where it is discharged. Through the alternating opening and closing of the solenoid valves 63, the alternating discharge action of the two branch pipes 64 is finally achieved.

[0024] Regarding the specific structure of the driving component 7 in the above scheme, please refer to the appendix. Figure 1 and attached Figure 8 As shown, the driving component 7 includes: The drive motor 71 is located inside the outer casing 2; The dual-shaft reducer 72 has its input end connected to the drive motor 71; Transmission unit 73 is connected to one of the output ends of the dual-shaft reducer 72 and the filter cartridge 41; Transmission unit 2 74 is connected to the other output end of the dual-shaft reducer 72 and the bulk material assembly 8; During the implementation of the solution, the operation of the drive motor 71 causes the two output ends of the dual-shaft reducer 72 to rotate simultaneously, and finally drives the filter cartridge 41 and the bulk material assembly 8 to move together through the transmission part 1 73 and the transmission part 2 74. The transmission part 1 73 and the transmission part 2 74 can adopt one or more of the existing belt drive, chain drive or gear drive, and this application does not limit them.

[0025] Regarding the specific structure of the bulk material assembly 8 in the above scheme, please refer to the appendix. Figure 8 and attached Figure 9 As shown, the bulk material assembly 8 includes: The top end of the vertical tube 81 is connected to the rotary joint 65 and to the transmission part 74. The outer conical shell 82 is connected to the bottom end of the vertical tube 81; The bracket 83 is located inside the outer conical shell 82; The inner conical shell 84 is mounted on the bracket 83 and sleeved inside the outer conical shell 82, with its bottom extending below the outer conical shell 82, so that the inner conical shell 84 and the outer conical shell 82 form a material feeding space that communicates with the vertical pipe 81 and is located directly above the filter cylinder 41. During the implementation of the scheme, the sodium isophthalic acid-5-sulfonate crystal mixture that enters the feeding space through the vertical pipe 81 is uniformly distributed on the inner surface of the filter cylinder 41 due to the rotational movement of the feeding space, thus avoiding accumulation or unevenness and improving mixing efficiency and quality. In addition, considering the dispersion effect of the sodium isophthalic acid-5-sulfonate crystal mixture, therefore, refer to the appendix. Figure 9 As shown, the bulk material assembly 8 also includes: Platform 85 is located at the bottom of the inner conical shell 84 and extends outward by 1-3 cm to help better guide the flow of the sodium isophthalic acid-5-sulfonate crystal mixture, optimize the discharge effect, and at the same time increase the contact area and improve processing efficiency.

[0026] Regarding the specific structure of the scraper assembly 9 in the above scheme, please refer to the appendix. Figure 1 and attached Figure 10 As shown, the scraper assembly 9 includes: Telescopic cylinder 291 is vertically installed inside the outer shell 2 and performs high-frequency reciprocating motion; Telescopic cylinder 3 92 is horizontally connected to the telescopic end of telescopic cylinder 2 91; The vertical plate 93 is connected to the telescopic end of the telescopic cylinder 92 and is located inside the filter cylinder 41. There are several scrapers 94, which are mounted on the vertical plate 93; During the implementation of the scheme, in conjunction with the rotation of the filter cylinder 41, the high-frequency reciprocating motion of the telescopic cylinder 2 91, combined with the gradual contraction of the telescopic cylinder 3 92, causes the scraper 94 to move up and down and gradually approach the sodium isophthalic acid-5-sulfonate crystals on the inner wall of the filter cylinder 41. The up and down scraping motion makes the contact between the scraper 94 and the surface of the sodium isophthalic acid-5-sulfonate crystals more uniform, resulting in smaller volume of the sodium isophthalic acid-5-sulfonate crystals that are hung down, which helps with material discharge and subsequent processing operations. In addition, to further improve the scraping effect, the scraper 94 has an arc-shaped structure, and the upper and lower scrapers 94 are staggered. The arc-shaped scraper 94 can better conform to the contour of the surface of sodium isophthalic acid-5-sulfonate crystals, and the staggered arrangement of the upper and lower scrapers 94 ensures that each scraping action can cover the areas that may have been missed in the previous one, increasing the contact area and reducing the existence of dead corner areas.

[0027] Additionally, it should be noted that this device can be used in conjunction with a crystallization apparatus for the production of sodium isophthalic acid-5-sulfonate. In use, this device is connected to the crystallization apparatus for the production of sodium isophthalic acid-5-sulfonate, for example: The concentrated sodium isophthalic acid-5-sulfonate solution from the sodium isophthalic acid-5-sulfonate concentration section enters the concentrated sodium isophthalic acid-5-sulfonate buffer tank for buffering. After buffering, the temperature of the concentrated sodium isophthalic acid-5-sulfonate solution decreases. Then, the self-circulation pump of the crystallizer is turned on, and the crystallizer feed valve is opened to initially feed the crystallizer to 80% liquid level. Subsequently, the crystallizer agitator and jacket circulating water are turned on to cool and crystallize the material in the crystallizer. After the initial crystallization of the material in the crystallizer is completed, open the discharge valve of the crystallizer and the feed valve of the circulation vessel to transfer the material that has completed the initial crystallization in the crystallizer to the circulation vessel until the liquid level of the material in both the crystallizer and the circulation vessel is about 40%. Next, open the feed valve of the crystallizer and the discharge valve of the circulating reactor to achieve closed-loop operation of the two reactors. Then, the device is started, the feed flow rate is adjusted, and the feed centrifugation begins. The mother liquor after centrifugation is collected and returned to the sodium isophthalic acid-5-sulfonate concentration section for distillation. The finished sodium isophthalic acid-5-sulfonate after centrifugation is automatically unloaded by the device and packaged by a packaging machine for storage. This process is repeated to achieve continuous and automated production of sodium isophthalic acid-5-sulfonate.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor, characterized in that: include: Base frame (1); The outer shell (2) has two openings (21) at the bottom and a drain pipe (22) on the side. The inner shell (3) has two openings at the top and is fixedly installed inside the outer shell (2). The bottom of the inner shell (3) has a through hole (31) coaxial with the opening (21) to form an installation channel. The bottom of the inner shell (3) also has a liquid guide tube (32). There are two channel tubes (4), both of which are open at the top and bottom, and each is vertically installed in an installation channel. The top of the channel tube (4) extends into the inner shell (3) and is rotatably connected to a filter cylinder (41) that is open at both the top and bottom. The material blocking assembly (5) has two sets, each set in a channel pipe (4). In state one, it blocks the bottom of the filter cylinder (41), and in state two, it opens the bottom of the filter cylinder (41) and forms a material discharge space between it and the channel pipe (4). The feeding assembly (6) is a set located on the top of the outer shell (2) and has two feeding ends, which alternate feeding actions; The drive assembly (7) has two sets, both of which are located inside the housing (2) and have two output ends, one of which is connected to the filter cartridge (41); The bulk material assembly (8) has two sets, each located above a filter cylinder (41), and each is rotatably connected to one discharge end of the feed assembly (6), and each is connected to the other output end of a set of drive assemblies (7); There are two scraping components (9), both of which are located inside the outer casing (2) and each is configured in conjunction with a filter cartridge (41).

2. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 1, characterized in that: The blocking assembly (5) includes: Mounting rod (51) is installed inside channel tube (4); Telescopic cylinder 1 (52) is vertically mounted on mounting rod (51); Mounting base (53) is connected to the telescopic end of telescopic cylinder (52); The rotating roller (54) is vertically rotatable on the mounting base (53); A blocking plate (55) is set on top of the rotating roller (54).

3. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 2, characterized in that: The blocking plate (55) has a conical structure.

4. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 3, characterized in that: The feeding assembly (6) includes: The feed pipe (61) is vertically installed on the top of the outer casing (2) and its top extends above the outer casing (2); The feed tube (62) is one and located inside the outer shell (2) with both ends closed, and is connected to the bottom end of the feed tube (61); There are two solenoid valves (63), both of which are installed on the feed pipe (62), and the two solenoid valves (63) open and close alternately; There are two branch pipes (64), both of which are vertically connected to the feed pipe (62) and each is distributed outside a solenoid valve (63); There are two rotary joints (65), each located at the bottom of a branch pipe (64), and each of the two rotary joints (65) is connected to a set of bulk material assembly (8).

5. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 4, characterized in that: The driving component (7) includes: The drive motor (71) is located inside the outer casing (2); A dual-shaft reducer (72) is connected at its input end to a drive motor (71); Transmission unit 1 (73) is connected to one of the output ends of the dual-shaft reducer (72) and the filter cartridge (41). The transmission unit 2 (74) is connected to the other output end of the dual-shaft reducer (72) and the bulk material assembly (8).

6. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 5, characterized in that: The bulk material assembly (8) includes: The vertical tube (81) is connected at its top end to the rotary joint (65) and to the transmission part two (74); The outer conical shell (82) is connected to the bottom end of the vertical tube (81); The bracket (83) is located inside the outer conical shell (82); The inner conical shell (84) is mounted on the bracket (83) and fitted inside the outer conical shell (82), with its bottom extending below the outer conical shell (82) so that a material feeding space is formed between the inner conical shell (84) and the outer conical shell (82) that is connected to the vertical pipe (81) and located directly above the filter cylinder (41).

7. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 6, characterized in that: Bulk assembly (8) also includes: Platform (85) is located at the bottom of the inner conical shell (84) and extends outward by 1-3 cm.

8. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 7, characterized in that: The scraper assembly (9) includes: Telescopic cylinder 2 (91) is vertically installed inside the outer shell (2) and performs high-frequency reciprocating motion; Telescopic cylinder three (92) is horizontally connected to the telescopic end of telescopic cylinder two (91); The vertical plate (93) is connected to the telescopic end of the telescopic cylinder three (92) and is located inside the filter cylinder (41); There are several scrapers (94) and they are set on the vertical plate (93).

9. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 8, characterized in that: The scraper (94) has an arc-shaped structure, and the upper and lower scrapers (94) are staggered.

10. The automated production line for continuous refining of sodium isophthalic acid-5-sulfonate mother liquor according to claim 9, characterized in that: The bottom of the outer shell (2) is provided with a cone-shaped discharge hopper (23), and the discharge hopper (23) is covered under the two openings (21).

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