Self-filtering crystallization reaction kettle for medicinal salicylic acid

Abstract

The utility model relates to the technical field of crystallization reaction kettles, in particular to a self-filtering crystallization reaction kettle for medicinal salicylic acid, which comprises a bottom frame and a crystallization reaction kettle body transversely arranged above the bottom frame, one end of the crystallization reaction kettle body is matched with an inner sleeve in a sealing and plugging manner, and an arc-shaped filter plate is arranged at the bottom of the inner sleeve. A mother liquor discharging opening is formed in the position, located above the arc-shaped filter plate, of the end of the inner sleeve, a liquid discharging filter screen is installed at the mother liquor discharging opening, a crystal stripping mechanism capable of making contact with the arc-shaped filter plate in a disengagement mode is arranged in the inner sleeve, and a vibration falling mechanism matched with the arc-shaped filter plate is arranged at the top of the crystallization reaction kettle body. According to the salicylic acid crystal separation device, mother liquor and salicylic acid crystals can be conveniently and rapidly separated, the separation efficiency is improved, meanwhile, the burden of stripping the salicylic acid crystals is relieved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallization reactors, in particular to a self-filtering crystallization reactor for pharmaceutical salicylic acid. Background Art

[0002] This crystallization kettle is a mixing reaction device in the domestic processes of material mixing, heating, cooling, stirring, etc. in industries such as chemical engineering, pharmaceuticals, and food. Especially in the processing of pharmaceutical salicylic acid, after retrieval, the patent with the publication number CN220514158U discloses a salicylic acid crystallization reactor with a filtering structure, including a kettle body and a kettle cover. A stirring shaft is arranged at the center inside the kettle body, a lifting shaft is threadedly connected to the center inside the stirring shaft, a spring is sleeved on the outer side of the bottom of the lifting shaft, a driving part is arranged at the top of the stirring shaft, the body of the driving part is fixed on the kettle cover, an anchor-type stirrer is fixed at the bottom end of the lifting shaft, a scraping part is arranged on one side of the bottom end of the anchor-type stirrer, a filter screen is arranged at the bottom of the kettle body, a discharge port is arranged on the inner wall of the kettle body on one side of the filter screen, a waste discharge port is arranged at the center of the bottom end of the kettle body where the filter screen is located, and a suction filtration mechanism is arranged at the waste discharge port. After scraping the crystal blocks slowly by making it abut against the crystal surface at the bottom of the kettle body, the salicylic acid crystals are led out through the discharge port. However, before discharging the salicylic acid crystals, all the mother liquor needs to be discharged first. Since the kettle body is vertical and most of the salicylic acid crystals are piled up at the bottom, the salicylic acid crystals piled up at the bottom are likely to affect the discharge of the mother liquor, resulting in a slow separation speed of the mother liquor and the salicylic acid crystals. At the same time, the salicylic acid crystals are piled up at the bottom, and it is also quite burdensome to peel off the salicylic acid crystals, and the service life is also reduced due to this. Therefore, a self-filtering crystallization reactor for pharmaceutical salicylic acid that is convenient for quickly separating the mother liquor and the salicylic acid crystals, improving the separation efficiency, and at the same time reducing the burden of peeling off the salicylic acid crystals is designed. Summary of the Utility Model

[0003] (1) Technical Problems to be Solved

[0004] Aiming at the deficiencies of the prior art, the utility model provides a self-filtering crystallization reactor for pharmaceutical salicylic acid, which is convenient for quickly separating the mother liquor and the salicylic acid crystals, improving the separation efficiency, reducing the burden of peeling off the salicylic acid crystals, and prolonging the service life.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the present utility model provides the following technical solutions: A crystallizing reactor for medicated salicylic acid with self-filtering function, comprising a chassis and a crystallizing reactor body horizontally placed above the chassis. One end of the crystallizing reactor body is sealed and inserted with an inner sleeve. An arc-shaped filter plate is provided at the bottom of the inner sleeve. A mother liquor discharge port is opened at a position above the arc-shaped filter plate at the end of the inner sleeve. A drainage filter screen is installed at the mother liquor discharge port. A crystal stripping mechanism that can be disengaged from contact with the arc-shaped filter plate is arranged inside the inner sleeve. A shaking mechanism adapted to the arc-shaped filter plate is provided at the top of the crystallizing reactor body. A positioning mechanism is further provided between the inner sleeve and the crystallizing reactor body. Specifically, the shaking mechanism includes a vibrating arc plate fixedly installed at the top of the crystallizing reactor body, and a vibrating motor is fixedly installed at the top of the vibrating arc plate.

[0007] Preferably, a vertical inclination angle adjusting mechanism is further provided between the crystallizing reactor body and the chassis. The vertical inclination angle adjusting mechanism includes a support driving cylinder. One end of the crystallizing reactor body is rotatably connected to the chassis, and the other end of the crystallizing reactor body is hinged to the chassis through the support driving cylinder.

[0008] Preferably, the crystal stripping mechanism includes a scraping and dispersing frame rotatable inside the inner sleeve. The scraping and dispersing frame includes a U-shaped frame that can slide in surface contact with the inner side wall of the inner sleeve. A driving motor for driving the scraping and dispersing frame to rotate is fixedly installed outside the inner sleeve.

[0009] Preferably, the positioning mechanism includes a positioning driving cylinder fixedly installed on the crystallizing reactor body. A positioning groove that is horizontally slidably matched with the crystallizing reactor body is fixedly installed on the output shaft of the positioning driving cylinder. A positioning block that is inserted and slidably matched with the positioning groove is fixedly installed at the end of the inner sleeve.

[0010] Preferably, a shielding plate is fixedly installed outside the drainage filter screen, and a handle is also fixedly installed on the inner sleeve.

[0011] Preferably, a feeding mechanism is installed on one side of the crystallizing reactor body away from the inner sleeve.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the present utility model provides a crystallizing reactor for medicated salicylic acid with self-filtering function, having the following beneficial effects:

[0014] The crystallization reactor for medicated salicylic acid with self-filtration inserts the inner sleeve in a way that the arc-shaped filter plate faces downward, then fills the mother liquor for preparing medicated salicylic acid to press down below the top surface of the arc-shaped filter plate, enabling crystals to form on the side wall of the arc-shaped filter plate. After the reaction is completed, the inner sleeve is rotated 180 degrees as a whole, causing the arc-shaped filter plate to rotate to the top, so that the drainage filter screen faces downward, and thus the mother liquor can be discharged between the crystallization reactor body and the inner sleeve through the drainage filter screen. Most of the salicylic acid crystals adhere to the upper arc-shaped filter plate, and then the crystal scraping mechanism can be driven to scrape the crystals on the arc-shaped filter plate, scraping off most of the crystals adhering to the arc-shaped filter plate. Then, the crystal scraping mechanism is rotated to the side away from the arc-shaped filter plate, and then the arc-shaped filter plate is vibrated from the top by the vibrating mechanism to shake off the residual salicylic acid crystals on the arc-shaped filter plate. Then, the inner sleeve is pulled out and the salicylic acid crystals are poured out. Through the positioning mechanism, the inner sleeve can be positioned when the arc-shaped filter plate is at the bottom, preventing the inner sleeve from rotating during the reaction and ensuring the stability of the reaction process. The crystallization reactor for medicated salicylic acid with self-filtration facilitates the rapid separation of the mother liquor and salicylic acid crystals, improves the separation efficiency, reduces the burden of scraping salicylic acid crystals, and extends the service life. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the overall decomposition of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the overall present utility model;

[0017] Figure 3 is a schematic structural diagram of the overall decomposition of the present utility model from other perspectives;

[0018] Figure 4 is a schematic structural diagram of the overall present utility model from other perspectives;

[0019] Figure 5 is a schematic structural diagram of the wall scraping and dispersing frame of the present utility model.

[0020] Reference numerals in the drawings: 1, crystallization reactor body; 2, inner sleeve; 3, arc-shaped filter plate; 4, drainage filter screen; 5, wall scraping and dispersing frame; 6, bottom frame; 7, support driving cylinder; 8, driving motor; 9, baffle; 10, positioning block; 11, positioning groove; 12, positioning driving cylinder; 13, vibrating arc plate; 14, vibrating motor; 15, handle; 16, feeding pipe. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment:

[0023] Please refer to Figures 1-5 , a crystallizing reactor for medicinal salicylic acid with self-filtering function, which includes a chassis 6 and a crystallizing reactor body 1 horizontally placed above the chassis 6. One end of the crystallizing reactor body 1 is hermetically inserted and matched with an inner sleeve 2. An arc-shaped filter plate 3 is arranged at the bottom of the inner sleeve 2. A mother liquor discharge port is opened at the position of the end of the inner sleeve 2 above the arc-shaped filter plate 3. A drainage filter screen 4 is installed at the mother liquor discharge port. A crystal stripping mechanism that can be disengaged from the arc-shaped filter plate 3 is arranged inside the inner sleeve 2. A shaking mechanism adapted to the arc-shaped filter plate 3 is arranged at the top of the crystallizing reactor body 1. A positioning mechanism is also arranged between the inner sleeve 2 and the crystallizing reactor body 1. Specifically, the shaking mechanism includes a vibrating arc plate 13 fixedly installed at the top of the crystallizing reactor body 1. A vibrating motor 14 is fixedly installed at the top of the vibrating arc plate 13. Starting the vibrating motor 14 can drive the vibrating arc plate 13 to vibrate, so as to vibrate the arc-shaped filter plate 3 rotated to the top, and all the salicylic acid crystals remaining and adhering to the arc-shaped filter plate 3 can be shaken off.

[0024] Specifically, the vertical and horizontal inclination angle of the crystallizing reactor body 1 is adjustable. A vertical and horizontal inclination angle adjusting mechanism is also arranged between the crystallizing reactor body 1 and the chassis 6. The vertical and horizontal inclination angle adjusting mechanism includes a support driving cylinder 7. One end of the crystallizing reactor body 1 is rotatably connected to the chassis 6. The other end of the crystallizing reactor body 1 is hinged to the chassis 6 through the support driving cylinder 7. The support driving cylinder 7 is hinged at one end of the chassis 6. The output end of the support driving cylinder 7 is rotatably connected to the crystallizing reactor body 1. By extending or shortening the support driving cylinder 7, the inclination angle of the crystallizing reactor body 1 can be adjusted, so that one end tilts down or up. By adjusting the inclination angle, it is convenient to separate the mother liquor or avoid the situation that the inner sleeve 2 slides out of the crystallizing reactor body 1.

[0025] Specifically, the crystal peeling mechanism includes a wall scraping and breaking frame 5 rotating in the inner sleeve 2, and the wall scraping and breaking frame 5 includes a U-shaped frame that can slide in contact with the inner wall surface of the inner sleeve 2. A driving motor 8 that drives the wall scraping and breaking frame 5 to rotate is fixedly installed on the outer side of the inner sleeve 2. Furthermore, a plurality of breaking leaves are arranged at intervals on the U-shaped frame. Through the plurality of breaking leaves and the wall scraping and breaking frame 5, the salicylic acid crystals can be broken while being peeled off from the arc filter plate 3 for subsequent processing. The driving motor 8 is started to drive the wall scraping and breaking frame 5 to rotate. The wall scraping and breaking frame 5 rotates to perform peeling and breaking operations.

[0026] Specifically, the positioning mechanism includes a positioning drive cylinder 12 fixedly installed on the crystallization reaction kettle body 1, and the output shaft of the positioning drive cylinder 12 is fixedly installed with a positioning groove 11 that horizontally slides with the crystallization reaction kettle body 1, and the end of the inner sleeve 2 is fixedly installed with a positioning block 10 that plugs and slides with the positioning groove 11. Through the cooperation of the positioning block 10, the positioning groove 11 and the positioning drive cylinder 12, it is convenient to rotate and position the inner sleeve 2 as a whole when the arc filter plate 3 is at the bottom to avoid its rotation, ensure that the mother liquor does not break away from the contact with the arc filter plate 3 when the reaction is not fully completed, ensure that all the crystals adhere to the arc filter plate 3, and release its positioning after the reaction.

[0027] Specifically, a baffle plate 9 is fixedly installed on the outside of the drainage filter 4, and a handle 15 is also fixedly installed on the inner sleeve 2. The baffle plate 9 can facilitate the diversion of the mother liquid when the inner sleeve 2 is rotated to prevent the mother liquid from overflowing onto the drive motor 8 along the side wall. The handle 15 can facilitate the rotation of the inner sleeve 2 as a whole.

[0028] Specifically, a feeding mechanism is installed on the side of the crystallization reaction kettle body 1 away from the inner sleeve 2. Furthermore, the feeding mechanism includes a feeding pipe 16 fixedly connected to the side wall of the crystallization reaction kettle body 1, and the top of the feeding pipe 16 is connected to a feeding hopper. The mother liquor for preparing medicinal salicylic acid can be added into the space between the crystallization reaction kettle body 1 and the inner sleeve 2 through the feeding hopper and the feeding pipe 16.

[0029] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0030] It should be easily understood that the terms "on", "above", and "over" in this disclosure should be construed in the broadest manner such that "on" not only means "directly on something", but also includes the meaning of "on something" with intermediate features or layers therebetween, and "above" or "over" not only include the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intermediate features or layers therebetween (i.e., directly on something).

[0031] In addition, for ease of description, spatial relative terms may be used in the text, such as "below", "beneath", "under", "above", "upper", etc., to describe the relationship of one element or feature to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the drawings. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly as well.

[0032] It should be noted that in this document, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A crystallizing reactor for medicinal salicylic acid with self-filtering function, characterized in that: It includes a chassis (6) and a crystallization reaction kettle body (1) horizontally placed above the chassis (6). One end of the crystallization reaction kettle body (1) is in sealed plug-in fit with an inner sleeve (2). An arc-shaped filter plate (3) is arranged at the bottom of the inner sleeve (2). A mother liquor discharge port is opened at a position above the arc-shaped filter plate (3) at the end of the inner sleeve (2). A drain filter screen (4) is installed at the mother liquor discharge port. A crystal stripping mechanism that can be disengaged from the arc-shaped filter plate (3) is arranged inside the inner sleeve (2). A shaking-off mechanism adapted to the arc-shaped filter plate (3) is arranged at the top of the crystallization reaction kettle body (1). A positioning mechanism is also arranged between the inner sleeve (2) and the crystallization reaction kettle body (1).

2. The filterable crystallization reactor for pharmaceutical salicylic acid according to claim 1, wherein: It also includes a vertical inclination angle adjustment mechanism arranged between the crystallization reaction kettle body (1) and the chassis (6). The vertical inclination angle adjustment mechanism includes a support driving cylinder (7). One end of the crystallization reaction kettle body (1) is rotatably connected to the chassis (6). The other end of the crystallization reaction kettle body (1) is hinged to the chassis (6) through the support driving cylinder (7).

3. The crystallizing reactor for medicinal salicylic acid capable of self-filtration according to claim 2, wherein: The crystal stripping mechanism includes a scraping and dispersing frame (5) rotating inside the inner sleeve (2). The scraping and dispersing frame (5) includes a U-shaped frame that can slide in surface contact with the inner side wall of the inner sleeve (2). A driving motor (8) for driving the scraping and dispersing frame (5) to rotate is fixedly installed on the outer side of the inner sleeve (2).

4. The crystallizing reactor for medicinal salicylic acid capable of self-filtration according to claim 3, wherein: The positioning mechanism includes a positioning driving cylinder (12) fixedly installed on the crystallization reaction kettle body (1). A positioning groove (11) that is horizontally slidably matched with the crystallization reaction kettle body (1) is fixedly installed on the output shaft of the positioning driving cylinder (12). A positioning block (10) that is plug-in and slidably matched with the positioning groove (11) is fixedly installed at the end of the inner sleeve (2).

5. The crystallizing reactor for medicated salicylic acid capable of self-filtration according to claim 4, characterized in that: A shielding plate (9) is fixedly installed outside the drain filter screen (4). A handle (15) is also fixedly installed on the inner sleeve (2).

6. The crystallizing reactor for medicinal salicylic acid capable of self-filtration according to claim 5, wherein: A feeding mechanism is installed on one side of the crystallization reaction kettle body (1) away from the inner sleeve (2).

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