A crystallization kettle for producing a fluorescent whitening agent

Abstract

The utility model discloses a kind of crystallization kettle for fluorescent whitening agent production, it is related to chemical crystallization equipment technical field.The utility model includes kettle body, motor is fixedly connected with the kettle body top, motor output end is through kettle body top and is fixedly connected with stirring rod, the surface of stirring rod is provided with wall scraping subassembly, connecting assembly is arranged in the wall scraping subassembly inner chamber.The utility model wall scraping subassembly passes through rotating rod, bevel gear pair and screw rod drive mechanism, the accurate, reliable linear control of scraper position is realized, and the introduction of spring makes elastic contact between scraper and kettle body inner wall, can effectively scrape off crystal scale, can also self-adapting tiny unevenness of inner wall or compensate installation error, avoid the damage caused to equipment and scraper by rigid impact, and spring can exert sustained pressure to scraper after scraper wear, so that it can closely adhere to kettle body inner wall, reduce production interruption time, improve production continuity and equipment adaptability.

Description

Technical Field

[0001] This utility model belongs to the technical field of chemical crystallization equipment, and in particular relates to a crystallization kettle for the production of fluorescent whitening agents. Background Technology

[0002] Fluorescent brightener is a fluorescent dye, or white dye, and is also a general term for a class of compounds. Its characteristic is that it can excite incident optical fibers to produce fluorescence, giving the dyed material a sparkling effect similar to fluorite, making the material appear very white to the naked eye. In the production process of fluorescent brightener, a crystallization kettle is needed to cool and crystallize the solution.

[0003] Chinese patent application CN216170075U discloses a crystallization vessel for producing fluorescent whitening agents, comprising a vessel body, a feed pipe disposed at the upper part of the vessel body, and a discharge pipe disposed at the bottom of the vessel body. A fixed plate is provided at the lower part of the vessel body, and multiple threaded rods are evenly arranged along the circumference of the fixed plate. The threaded rods are vertically disposed on the fixed plate. A movable plate is slidably disposed on the vessel body, and the threaded rods extend through the movable plate to above it. Nuts are threadedly connected to the threaded rods, and the nuts are located above the movable plate. Multiple heat dissipation plates are disposed between the fixed plate and the movable plate, and the heat dissipation plates are slidably disposed on the vessel body. Multiple springs are evenly arranged along the circumference between adjacent heat dissipation plates. The heat dissipation plates in this invention can accelerate the heat dissipation speed of the vessel body, and the heat dissipation speed can be controlled by adjusting the number of heat dissipation plates.

[0004] Although this patent achieves rapid cooling, improved crystallization efficiency, and reduced initial residue on the vessel wall by using a cooling chamber formed by an outer and inner barrel, combined with inlet and outlet pipes to create a cooling water circulation system, and supplemented by adjustable cooling plates, and by using a motor-driven shaft to agitate materials with a stirring rod to prevent uneven temperature distribution, and by installing a scraper at the end of the stirring rod to scrape off crystallization residue against the inner wall of the vessel, this crystallizer lacks a flexible scraper assembly. In contrast, most existing crystallizers use fixed or simple elastic scraper designs with a fixed extension range for the scraper. The existing scraping devices are difficult to adapt to crystallizing reactors of different diameters. When it is necessary to change the reactor body specifications corresponding to the production batch during the production process, or when the scraper needs to be adjusted to maintain the pressure with the reactor wall after long-term use and wear, the existing scraping devices lack an effective online adjustment mechanism. Often, it is necessary to manually disassemble and replace the entire scraping assembly after stopping the machine. The operation process is cumbersome and time-consuming, which seriously affects the continuity of production and overall efficiency. At the same time, it is impossible to quickly and accurately maintain the optimal contact state between the scraper and the reactor wall, resulting in unstable scraping effect. In addition, it is inconvenient to replace the individual scraper of the fixed or simple elastic scraping assembly, which further increases the equipment maintenance cost and downtime.

[0005] To address these issues, we provide a crystallization reactor for the production of fluorescent whitening agents. Utility Model Content

[0006] The purpose of this invention is to provide a crystallization kettle for the production of fluorescent whitening agents. By combining the wall scraping assembly and the connecting assembly, the invention solves the problems in the prior art where the wall scraping assembly of the crystallization kettle for the production of fluorescent whitening agents cannot adapt to kettles of different sizes and the scraper is inconvenient to disassemble.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model relates to a crystallization reactor for producing fluorescent whitening agents, comprising a reactor body. A motor is fixedly connected to the top of the reactor body. The output end of the motor passes through the top of the reactor body and is fixedly connected to a stirring rod. A wall scraping assembly is provided on the surface of the stirring rod. A connecting assembly is provided in the inner cavity of the wall scraping assembly. The wall scraping assembly includes a mounting plate. The inner side of the mounting plate is detachably connected to the stirring rod. A rotating rod is rotatably connected to the top of the mounting plate. A driving bevel gear is fixedly connected to the bottom of the rotating rod through the top of the mounting plate. A driven bevel gear meshes with one side of the bottom of the driving bevel gear. A lead screw is fixedly connected to the inner side of the driven bevel gear. One side of the lead screw is rotatably connected to the mounting plate. The surface of the lead screw is threaded. The device includes a movable rod, with both sides slidably connected to a mounting plate. A spring is fixedly connected to one side of the inner cavity of the movable rod, and a scraper is provided on the other side of the spring. The scraper is slidably connected to the mounting plate on both sides, and there are two scrapers symmetrically distributed on both sides of the stirring rod. This forms a symmetrical scraping trajectory in the circumferential direction within the vessel, fully covering all areas of the vessel wall and avoiding localized material residue caused by a single scraper. It also balances the force state of the material during stirring. A feed pipe is fixedly connected to one side of the top of the vessel, and a discharge pipe is fixedly connected to the bottom, providing designated channels for the material to enter and exit. The self-locking property of the lead screw ensures that the scraper will not shift due to device shaking after the position is adjusted.

[0009] The present invention is further configured such that the connecting component includes a magnetic block, the bottom of the magnetic block is fixedly connected to the moving rod, a magnetic plate is adsorbed on the top of the magnetic block, a connecting plate is fixedly connected to the top of the magnetic plate, both sides of the connecting plate are slidably connected to the moving rod, and the connecting plate is L-shaped, which can restrict the movement position of the scraper and prevent the scraper from detaching from the inner cavity of the moving rod.

[0010] The present invention is further configured such that a knob is provided on the top of the mounting plate, and the bottom of the knob is fixedly connected to the rotating rod. The knob provides a direct manual operating component for the rotating rod, which can drive the rotating rod to rotate without the need for additional tools.

[0011] The present invention is further configured such that limiting grooves are provided on both sides of the inner cavity of the mounting plate, and the inner cavity of the limiting groove is slidably connected to the moving rod. The limiting groove can limit the range of motion of the moving rod and prevent it from leaving the inner cavity of the mounting plate.

[0012] The present invention is further configured such that a limiting rod is provided in the inner cavity of the spring, one side of the limiting rod is fixedly connected to the moving rod, and the surface of the limiting rod is slidably connected to the scraper. The limiting rod can not only restrict the running mode of the scraper, but also prevent the spring from twisting or displacing during the extension and contraction process.

[0013] The present invention is further configured such that a handle is provided on one side of the top of the moving rod, and the bottom of the handle is fixedly connected to the connecting plate. The handle provides a clear and easy-to-grip force point for operating the moving rod, enabling the operator to quickly and accurately control the moving direction and distance of the moving rod.

[0014] The present invention is further configured such that sliding grooves are provided on both sides of the inner cavity of the moving rod, and the inner cavity of the sliding groove is slidably connected to the connecting plate. The sliding groove can limit the range of motion of the connecting plate and improve its stability during operation.

[0015] The present invention is further configured such that a coil is fixedly connected to the inner cavity of the vessel, an inlet pipe is fixedly connected to one side of the top of the coil, and an outlet pipe is fixedly connected to the bottom of the coil. The arrangement of the coil allows the cooling medium to come into uniform contact with the material.

[0016] The present invention has the following beneficial effects.

[0017] 1. The scraper assembly of this utility model achieves precise and reliable linear control of the scraper position through a rotating rod, bevel gear pair and lead screw transmission mechanism. The introduction of spring makes elastic contact between the scraper and the inner wall of the vessel, which can effectively scrape off the scale and adapt to the slight unevenness of the inner wall or compensate for installation errors. It avoids damage to the equipment and scraper caused by rigid impact. After the scraper wears, the spring can apply continuous pressure to the scraper, so that it can fit tightly against the inner wall of the vessel, reduce production interruption time, and improve production continuity and equipment adaptability.

[0018] 2. The connecting assembly of this utility model achieves rapid connection and separation between the scraper and the moving rod through the magnetic attraction between the magnetic block and the magnetic plate. This structure makes the individual disassembly and replacement of the scraper extremely convenient, and can be operated by hand without tools, which significantly simplifies the maintenance process. At the same time, the sliding connection between the connecting plate and the moving rod ensures the guiding accuracy of the scraper's radial movement, avoids the scraper from deflecting or shaking after being attracted and fixed, and ensures the stability of the wall scraping operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional view of a crystallization vessel used in the production of a fluorescent whitening agent.

[0021] Figure 2 This is a three-dimensional view of the wall scraping component in a crystallization reactor used for the production of a fluorescent whitening agent.

[0022] Figure 3 This is an enlarged view of point A in a crystallization vessel used in the production of a fluorescent whitening agent.

[0023] Figure 4 This is an enlarged view of point B in a crystallization vessel used in the production of a fluorescent whitening agent.

[0024] Figure 5 This is a three-dimensional view of the coil in a crystallization reactor used in the production of a fluorescent whitening agent.

[0025] In the attached diagram: 1. Kettle body; 2. Motor; 3. Stirring rod; 4. Scraper assembly; 401. Mounting plate; 402. Rotating rod; 403. Driving bevel gear; 404. Driven bevel gear; 405. Lead screw; 406. Moving rod; 407. Spring; 408. Scraper; 5. Connecting assembly; 501. Magnetic block; 502. Magnetic plate; 503. Connecting plate; 6. Knob; 7. Limiting groove; 8. Limiting rod; 9. Handle; 10. Slide groove; 11. Coil; 12. Water inlet pipe; 13. Water outlet pipe. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figure 1-5This utility model relates to a crystallization reactor for producing fluorescent whitening agents, comprising a reactor body 1, a motor 2 fixedly connected to the top of the reactor body 1, a stirring rod 3 fixedly connected to the output end of the motor 2 through the top of the reactor body 1, a wall scraping assembly 4 provided on the surface of the stirring rod 3, a connecting assembly 5 provided in the inner cavity of the wall scraping assembly 4, the wall scraping assembly 4 including a mounting plate 401, the inner side of the mounting plate 401 being detachably connected to the stirring rod 3, a rotating rod 402 rotatably connected to the top of the mounting plate 401, and the bottom of the rotating rod 402 penetrating the top of the mounting plate 401 and fixedly connected. There is a driving bevel gear 403, and a driven bevel gear 404 meshes with one side of the bottom of the driving bevel gear 403. A lead screw 405 is fixedly connected to the inner side of the driven bevel gear 404. One side of the lead screw 405 is rotatably connected to the mounting plate 401. A moving rod 406 is threadedly connected to the surface of the lead screw 405. Both sides of the moving rod 406 are slidably connected to the mounting plate 401. A spring 407 is fixedly connected to one side of the inner cavity of the moving rod 406. A scraper 408 is provided on the other side of the spring 407. Both sides of the scraper 408 are slidably connected to the mounting plate 401.

[0028] Specifically: There are two scrapers 408, which are symmetrically distributed on both sides of the stirring rod 3, forming a symmetrical scraping trajectory in the circumferential direction inside the vessel body 1, fully covering all areas of the vessel wall, avoiding local material residue caused by a single scraper 408, and balancing the force state of the material during the stirring process. A feed pipe is fixedly connected to one side of the top of the vessel body 1, and a discharge pipe is fixedly connected to the bottom, providing a designated channel for the material to enter and exit. The self-locking property of the screw 405 ensures that the scraper 408 will not be displaced due to device shaking after the position is adjusted.

[0029] Please see Figure 1-5 The connecting component 5 includes a magnetic block 501, the bottom of which is fixedly connected to the moving rod 406. A magnetic plate 502 is attracted to the top of the magnetic block 501, and a connecting plate 503 is fixedly connected to the top of the magnetic plate 502. Both sides of the connecting plate 503 are slidably connected to the moving rod 406. A knob 6 is provided on the top of the mounting plate 401, and the bottom of the knob 6 is fixedly connected to the rotating rod 402. Limiting grooves 7 are provided on both sides of the inner cavity of the mounting plate 401, and the inner cavity of the limiting grooves 7 is slidably connected to the moving rod 406. The inner cavity of the spring 407... A limiting rod 8 is provided, one side of which is fixedly connected to the moving rod 406. The surface of the limiting rod 8 is slidably connected to the scraper 408. A handle 9 is provided on one side of the top of the moving rod 406. The bottom of the handle 9 is fixedly connected to the connecting plate 503. Sliding grooves 10 are provided on both sides of the inner cavity of the moving rod 406. The inner cavity of the sliding grooves 10 is slidably connected to the connecting plate 503. A coil 11 is fixedly connected to the inner cavity of the vessel body 1. A water inlet pipe 12 is fixedly connected to one side of the top of the coil 11. A water outlet pipe 13 is fixedly connected to the bottom of the coil 11.

[0030] Specifically: the connecting plate 503 is L-shaped, which can limit the movement position of the scraper 408 and prevent the scraper 408 from detaching from the inner cavity of the moving rod 406; the knob 6 provides a direct manual operation component for the rotating rod 402, which can drive the rotating rod 402 to rotate without the need for additional tools; the limiting groove 7 can limit the range of motion of the moving rod 406 and prevent it from detaching from the inner cavity of the mounting plate 401; the limiting rod 8 can not only limit the running mode of the scraper 408, but also prevent the spring 407 from twisting or displacing during the extension and retraction process; the handle 9 provides a clear and easy-to-grip force point for the operation of the moving rod 406, enabling the operator to quickly and accurately control the moving direction and distance of the moving rod 406; the slide 10 can limit the range of motion of the connecting plate 503 and improve its stability during operation; and the setting of the coil 11 allows the cooling medium to contact the material evenly.

[0031] The working principle of this utility model is as follows: Before use, adjust the position of the scraper 408 according to the size of the inner wall of the vessel body 1. Rotate the knob 6. The knob 6 drives the active bevel gear 403 to rotate through the rotating rod 402. The active bevel gear 403 drives the lead screw 405 to rotate through the driven bevel gear 404. The lead screw 405 drives the moving rod 406 to move. The moving rod 406 drives the spring 407 and the scraper 408 to move. After the scraper 408 is in contact with the inner wall of the vessel body 1 and the spring 407 is compressed, the adjustment is complete. When the scraper 408 needs to be replaced, pull the handle 9. The handle 9 drives the connecting plate 503 to move. The connecting plate 503 drives the magnetic plate 502 to move and disengage from the magnetic block 501. After the connecting plate 503 is completely removed, the scraper 408 can be pulled out from the limiting rod 8 for replacement.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A crystallization vessel for producing fluorescent whitening agents, comprising a vessel body (1), characterized in that: A motor (2) is fixedly connected to the top of the vessel body (1). The output end of the motor (2) passes through the top of the vessel body (1) and is fixedly connected to a stirring rod (3). A wall scraping assembly (4) is provided on the surface of the stirring rod (3). A connecting assembly (5) is provided in the inner cavity of the wall scraping assembly (4). The wall scraping assembly (4) includes a mounting plate (401), the inner side of which is detachably connected to the stirring rod (3). A rotating rod (402) is rotatably connected to the top of the mounting plate (401). The bottom of the rotating rod (402) passes through the top of the mounting plate (401) and is fixedly connected to a driving bevel gear (403). A driven bevel gear (404) meshes with one side of the bottom of the driving bevel gear (403). A wire is fixedly connected to the inner side of the driven bevel gear (404). A rod (405) is rotatably connected to a mounting plate (401) on one side. A movable rod (406) is threadedly connected to the surface of the rod (405). Both sides of the movable rod (406) are slidably connected to the mounting plate (401). A spring (407) is fixedly connected to one side of the inner cavity of the movable rod (406). A scraper (408) is provided on the other side of the spring (407). Both sides of the scraper (408) are slidably connected to the mounting plate (401).

2. The crystallization kettle for producing fluorescent whitening agents according to claim 1, characterized in that: The connecting component (5) includes a magnetic block (501), the bottom of which is fixedly connected to the moving rod (406), a magnetic plate (502) is adsorbed on the top of the magnetic block (501), a connecting plate (503) is fixedly connected to the top of the magnetic plate (502), and both sides of the connecting plate (503) are slidably connected to the moving rod (406).

3. The crystallization kettle for producing fluorescent whitening agents according to claim 1, characterized in that: The mounting plate (401) is provided with a knob (6) on the top, and the bottom of the knob (6) is fixedly connected to the rotating rod (402).

4. The crystallization kettle for producing fluorescent whitening agents according to claim 1, characterized in that: The mounting plate (401) has limit grooves (7) on both sides of its inner cavity, and the inner cavity of the limit grooves (7) is slidably connected to the moving rod (406).

5. The crystallization kettle for producing fluorescent whitening agents according to claim 1, characterized in that: The inner cavity of the spring (407) is provided with a limiting rod (8), one side of the limiting rod (8) is fixedly connected to the moving rod (406), and the surface of the limiting rod (8) is slidably connected to the scraper (408).

6. The crystallization kettle for producing fluorescent whitening agents according to claim 2, characterized in that: A handle (9) is provided on one side of the top of the movable rod (406), and the bottom of the handle (9) is fixedly connected to the connecting plate (503).

7. The crystallization kettle for producing fluorescent whitening agents according to claim 2, characterized in that: The moving rod (406) has sliding grooves (10) on both sides of its inner cavity, and the inner cavity of the sliding groove (10) is slidably connected to the connecting plate (503).

8. The crystallization kettle for producing fluorescent whitening agents according to claim 1, characterized in that: The inner cavity of the vessel body (1) is fixedly connected to a coil (11), a water inlet pipe (12) is fixedly connected to one side of the top of the coil (11), and a water outlet pipe (13) is fixedly connected to the bottom of the coil (11).

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