Stirring crystallization reaction kettle

Abstract

The utility model belongs to the technical field of reaction kettles, and particularly relates to a stirring crystallization reaction kettle. Comprising a tank body, a discharge port is formed in the bottom of the tank body, a discharge valve is arranged at the discharge port, the tank body further comprises a heat exchange structure arranged on the outer wall of the tank body in a sleeving mode, and the heat exchange structure exchanges heat through reaction of the outer wall of the tank body and materials inside the tank body; the stirring device comprises a driving device and a stirring shaft which is driven by the driving device and is positioned on the central axis in the tank body; a stirring structure capable of extending in the radial direction of the tank body is arranged on the stirring shaft; the crystallization efficiency of internal material reaction is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of reaction kettles, in particular to a stirring crystallization reaction kettle. Background Art

[0002] A Chinese patent with publication number CN213853172U discloses a crystallization kettle, including a kettle body mechanism and a water-cooling pipe, wherein the kettle body mechanism includes an inner shell and an outer shell, a water inlet and a water outlet are provided on the side wall of the outer shell, the inner shell is located inside the outer shell, a cavity is provided between the inner shell and the outer shell, the two ends of the water-cooling pipe are respectively connected to the top and bottom of the cavity, the water-cooling pipe is arranged in the inner shell, the cooling pipe is S-shaped and there are two of them, which are respectively arranged on both sides of the rotating rod, so as to control the temperature in the kettle and ensure the crystallization reaction. However, the cooling pipe is directly arranged inside the kettle body, which will affect the stirring effect of the stirring blade, the flow field generated by the stirring blade will interact with the pipeline, and eddy currents, dead zones or uneven flow velocity distribution may occur, and the cooling pipeline occupies part of the kettle body space, which correspondingly reduces the actual area that the stirring blade can act on, thereby affecting the overall mixing effect, and then affecting the crystallization reaction in the kettle body. Utility Model Content

[0003] The purpose of the utility model is to provide a stirring crystallization reactor to solve the above-mentioned technical problems and ensure the crystallization efficiency of the internal material reaction.

[0004] In view of this, the utility model provides a stirred crystallization reactor in this embodiment, including a tank body, a discharge port is arranged at the bottom of the tank body, a discharge valve is arranged at the discharge port, and also includes a heat exchange structure arranged on the outer wall of the tank body, the heat exchange structure exchanges heat through the reaction between the outer wall of the tank body and the internal material, and a stirring device is also arranged in the tank body, the stirring device includes a driving device and a stirring shaft driven by the driving device and located on the central axis of the tank body, and the stirring shaft is provided with a stirring structure that can extend radially toward the tank body.

[0005] In the present technical scheme, the material is put into the tank body, and the tank body is made of heat-conducting metal material. The heat exchange structure sleeved on the outer wall of the tank exchanges heat through the reaction between the outer wall of the tank and the internal material, so that the temperature of the reaction in the tank is controlled to ensure that the crystallization reaction is carried out at the optimal temperature. The driving device is a driving motor fixedly arranged on the top of the tank body, and the output end of the driving motor and the stirring shaft are coaxially fixedly connected. Driven by the driving motor, the stirring shaft and the stirring structure on the stirring shaft stir and mix the material in the tank body. During the crystallization process, the stirring device can increase the contact area between the materials, promote the transfer of heat and mass, and help control the crystallization speed and the quality of the crystal. At the same time, the stirring shaft is provided with a stirring structure that can extend radially toward the tank body. During the stirring process, the stirring range can be expanded to better achieve the effect of mixing the materials.

[0006] In the above technical solution, further, the heat exchange structure is a jacket arranged against the outer wall of the tank body, a flow channel for the flow of heat exchange medium is arranged in the jacket, a liquid inlet pipe is connected to the top side of the jacket, and a liquid outlet pipe is connected to the bottom side of the jacket, and a drainage structure is arranged in the flow channel.

[0007] In the above technical solution, further, the drainage structure is a drainage plate arranged in the flow channel, the drainage plate is a spiral structure in the jacket, and both sides of the drainage plate are in contact with the side wall of the flow channel.

[0008] In the present technical solution, a liquid inlet valve and a liquid outlet valve are respectively provided on the liquid inlet pipe and the liquid outlet pipe. The heat exchange medium enters the flow channel in the jacket from the liquid inlet pipe at the top of the jacket. Under the drainage action of the guide plate inside the flow channel, the heat exchange medium that has completed the heat exchange leaves the jacket from the liquid outlet pipe at the bottom of the jacket. The setting of the guide plate can improve the flow state of the cooling medium, make the flow of the fluid in the jacket more orderly, help prevent the reaction medium from being retained in the jacket area, ensure that the medium can flow fully, and avoid local overheating or overcooling, which is very important for maintaining product quality and reaction stability.

[0009] In the above technical scheme, further, the stirring structure includes a fixed rod connected to the stirring shaft at one end and extending in the radial direction of the tank body at the other end. The fixed rod is a hollow structure, and an opening is provided on the side of the fixed rod away from the stirring shaft. An extension rod is slidably provided, the extension rod and the fixed rod are elastically connected, and a wall scraping structure is provided on the side of the extension rod away from the fixed rod.

[0010] In the above technical solution, further, the extension rod is connected to a pressure block slidably set in a sliding groove in the fixed rod, the pressure block is fixedly connected to the first spring, and the other end of the first spring is fixedly connected to a limit ring at the opening.

[0011] In the present technical scheme, during the stirring process, centrifugal force is generated. Under the action of the centrifugal force, the pressing block moves along the slide groove toward the opening, driving the extension rod to extend outward. At this time, the first spring is compressed by the pressing block. The squeezing force of the pressing block on the first spring depends on the centrifugal force brought by the stirring speed of the stirring shaft. That is, the faster the stirring shaft rotates, the greater the centrifugal force generated on the pressing block, the greater the squeezing force on the first spring, and the longer the extension rod extends out of the slide groove, until the scraping structure acts on the inner wall of the tank body. The stirring range can be changed and whether the scraping structure scrapes the inner wall of the tank body can be controlled by controlling the rotation speed of the stirring shaft as needed.

[0012] In the above technical solution, further, the wall scraping structure is a scraping plate arranged along the length direction of the tank body, one end of the scraping plate is fixedly connected to the extension rod, and the contact surface between the scraping plate and the inner wall of the tank body is a convex conical structure.

[0013] In the present technical solution, when the scraper plate comes into contact with the inner wall of the tank body, the scraper plate can fully scrape off the material adhering to the inner wall of the tank body, thereby avoiding material loss, improving raw material utilization, and avoiding uneven concentration caused by local material accumulation, which is beneficial to improving the quality and efficiency of the crystallization reaction.

[0014] In the above technical solution, further, the stirring structure is arranged around the stirring shaft in a circle, and there are at least two stirring structures.

[0015] In the technical solution, in this embodiment, three stirring structures are arranged at the same horizontal height, and the three stirring structures form a group. There are three groups in total arranged in the vertical direction of the stirring shaft, and the stirring structures of adjacent groups are staggered to ensure the stirring effect.

[0016] In the above technical solution, further, a bottom wall scraping structure is provided on the side of the stirring shaft away from the driving device, and the bottom wall scraping structure includes an arc scraper capable of scraping the bottom wall of the tank body, and the arc scraper and the scraper plate are arranged in the same manner.

[0017] In the present technical solution, the arc scraper in the bottom wall scraping structure is set according to the shape of the bottom of the tank body, and can scrape the bottom wall of the tank body under the drive of the stirring shaft. The setting method of the arc scraper and the scraper plate is the same, so they are not elaborated. While playing the scraping role, it can also prevent the material from depositing at the bottom, ensuring that the reaction materials in the tank body are fully reacted, and ensuring production efficiency and production quality.

[0018] The beneficial effects of the utility model are:

[0019] 1. The heat exchange structure sleeved on the outer wall of the tank exchanges heat through the reaction between the outer wall of the tank and the internal material, so that the temperature of the reaction in the tank is controlled to ensure that the crystallization reaction is carried out at the optimal temperature. The stirring device can increase the contact area between the materials, promote the transfer of heat and mass, and help control the crystallization speed and the quality of the crystal. At the same time, the stirring shaft is provided with a stirring structure that can extend radially toward the tank body. During the stirring process, the stirring range can be expanded to better achieve the effect of mixing the materials;

[0020] 2. The flow channel in the jacket is provided with a spiral guide plate, and the two sides of the guide plate are in contact with the side wall of the flow channel. The setting of the guide plate can improve the flow state of the cooling medium, make the flow of the fluid in the jacket more orderly, help prevent the reaction medium from being retained in the jacket area, ensure that the medium can flow fully, and avoid local overheating or overcooling, which is very important for maintaining product quality and reaction stability;

[0021] 3. During the stirring process, centrifugal force is generated. Under the action of the centrifugal force, the pressing block moves along the slide groove toward the opening, driving the extension rod to extend outward. As needed, the stirring range can be changed by controlling the rotation speed of the stirring shaft and controlling whether the scraping structure scrapes the inner wall of the tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the utility model;

[0023] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 is a schematic diagram of the structure of the stirring device;

[0025] Figure 4 It is a cross-sectional view of the stirring structure.

[0026] The symbols in the figure are:

[0027] 1. Tank body; 2. Discharge valve; 3. Stirring device; 4. Driving device; 5. Stirring shaft; 6. Stirring structure; 7. Jacket; 8. Flow channel; 9. Liquid inlet pipe; 10. Liquid outlet pipe; 11. Drain plate; 12. Liquid inlet valve; 13. Liquid outlet valve; 14. Fixed rod; 15. Opening; 16. Extension rod; 17. Press block; 18. First spring; 19. Limiting ring; 20. Scraper plate; 21. Raised conical structure; 22. Arc scraper. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0029] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0031] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0032] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0033] Embodiment 1:

[0034] like Figure 1-Figure 4 As shown, the present embodiment provides a stirred crystallization reactor, comprising a tank body 1, a discharge port is arranged at the bottom of the tank body 1, a discharge valve 2 is arranged at the discharge port, and the characteristic is that it also comprises a heat exchange structure sleeved on the outer wall of the tank body 1, the heat exchange structure exchanges heat through the reaction between the outer wall of the tank body 1 and the internal material, the tank body 1 is also provided with a stirring device 3, the stirring device 3 comprises a driving device 4 and a stirring shaft 5 driven by the driving device 4 and located on the central axis of the tank body 1, and the stirring shaft 5 is provided with a stirring structure 6 which can extend radially toward the tank body 1. The material is put into the tank body 1, which is a heat-conducting metal material. The heat exchange structure sleeved on the outer wall of the tank body 1 exchanges heat through the reaction between the outer wall of the tank body 1 and the internal material, so that the temperature of the reaction in the tank body 1 is controlled to ensure that the crystallization reaction is carried out at the optimal temperature. The driving device 4 is a driving motor fixedly arranged on the top of the tank body 1, and the output end of the driving motor is coaxially fixedly connected with the stirring shaft 5. Driven by the driving motor, the stirring shaft 5 and the stirring structure 6 on the stirring shaft 5 stir and mix the materials in the tank body 1. During the crystallization process, the stirring device 3 can increase the contact area between the materials, promote the transfer of heat and mass, and help control the crystallization speed and the quality of the crystal. At the same time, the stirring shaft 5 is provided with a stirring structure 6 that can extend radially toward the tank body 1. During the stirring process, the stirring range can be expanded to better achieve the effect of mixing the materials.

[0035] like Figure 1 and Figure 2As shown, the heat exchange structure is a jacket 7 that is set against the outer wall of the tank body 1, and a flow channel 8 for the heat exchange medium to flow is set in the jacket 7. A liquid inlet pipe 9 is connected to one side of the top of the jacket 7, and a liquid outlet pipe 10 is connected to one side of the bottom of the jacket 7. A drainage structure is set in the flow channel 8. The drainage structure is a drainage plate 11 set in the flow channel 8. The drainage plate 11 is a spiral structure in the jacket 7, and both sides of the drainage plate 11 are in contact with the side walls of the flow channel. The liquid inlet pipe 9 and the liquid outlet pipe 10 are respectively provided with a liquid inlet valve 12 and a liquid outlet valve 13. The heat exchange medium enters the flow channel 8 in the jacket 7 from the liquid inlet pipe 9 at the top of the jacket 7. Under the drainage effect of the guide plate 11 inside the flow channel 8, the heat exchange medium that has completed the heat exchange leaves the jacket 7 from the liquid outlet pipe 10 at the bottom of the jacket 7. The setting of the guide plate 11 can improve the flow state of the cooling medium, make the flow of the fluid in the jacket 7 more orderly, help prevent the reaction medium from being retained in the jacket 7 area, ensure that the medium can flow fully, help prevent the reaction medium from being retained in the jacket 7 area, ensure that the medium can flow fully, and avoid local overheating or overcooling, which is very important for maintaining product quality and reaction stability.

[0036] Embodiment 2:

[0037] This embodiment provides a stirred crystallization reactor, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0038] like Figure 3 and Figure 4 As shown, the stirring structure 6 includes a fixed rod 14 connected to the stirring shaft 5 at one end and extending in the radial direction of the tank body 1 at the other end. The fixed rod 14 is a hollow structure, and an opening 15 is provided on the side of the fixed rod 14 away from the stirring shaft 5, and an extension rod 16 is slidably provided. The extension rod 16 is elastically connected to the fixed rod 14, and a scraping structure is provided on the side of the extension rod 16 away from the fixed rod 14. The extension rod 16 is connected to a pressure block 17 slidably provided in a slide groove in the fixed rod 14, and the pressure block 17 is fixedly connected to a first spring 18, and the other end of the first spring 18 is fixedly connected to a limit ring 19 at the opening 15. During the stirring process, centrifugal force is generated. Under the action of the centrifugal force, the pressing block 17 moves along the slide groove toward the opening 15, driving the extension rod 16 to extend outward. At this time, the first spring 18 is squeezed and compressed by the pressing block 17. The squeezing force of the pressing block 17 on the first spring 18 depends on the centrifugal force brought by the stirring speed of the stirring shaft 5. That is, the faster the stirring shaft 5 rotates, the greater the centrifugal force generated on the pressing block 17, the greater the squeezing force on the first spring 18, and the longer the extension rod 16 extends out of the slide groove until the scraping structure acts on the inner wall of the tank body 1. The stirring range can be changed by controlling the rotation speed of the stirring shaft 5 and whether the scraping structure scrapes the inner wall of the tank body 1 as needed.

[0039] like Figure 3 and Figure 4 As shown, the scraping structure is a scraping plate 20 arranged along the length direction of the tank body 1, one end of the scraping plate 20 is fixedly connected to the extension rod 16, and the contact surface between the scraping plate 20 and the inner wall of the tank body 1 is a convex conical structure 21. When the scraping plate 20 contacts the inner wall of the tank body 1, the scraping plate 20 can fully scrape the material adhered to the inner wall of the tank body 1, avoid material loss, improve raw material utilization, avoid uneven concentration caused by local material accumulation, and help improve the quality and efficiency of the crystallization reaction.

[0040] The stirring structure 6 is arranged around the stirring shaft 5, and there are at least two stirring structures 6. In this embodiment, three stirring structures 6 are arranged at the same level, and the three stirring structures 6 form a group. There are three groups in total arranged in the vertical direction of the stirring shaft 5, and the stirring structures 6 of adjacent groups are staggered to ensure the stirring effect.

[0041] like Figure 3 As shown, a bottom wall scraping structure is also provided on the side of the stirring shaft 5 away from the driving device 4, and the bottom wall scraping structure includes an arc scraper 22 that can scrape the bottom wall of the tank body 1, and the arc scraper 22 and the scraper plate 20 are arranged in the same manner. The arc scraper 22 in the bottom wall scraping structure is specifically arranged according to the shape of the bottom of the tank body 1, and can scrape the bottom wall of the tank body 1 under the drive of the stirring shaft 5. The arc scraper 22 and the scraper plate 20 are arranged in the same manner, so they are not elaborated, and while playing a scraping role, it can also prevent the material from being deposited at the bottom, ensuring that the reaction material in the tank body 1 is fully reacted, and ensuring production efficiency and production quality.

[0042] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A stirred crystallization reactor, comprising a tank body (1), a discharge port is arranged at the bottom of the tank body (1), a discharge valve (2) is arranged at the discharge port, and the characteristics are: The invention also comprises a heat exchange structure sleeved on the outer wall of the tank body (1), wherein the heat exchange structure exchanges heat through the reaction between the outer wall of the tank body (1) and the material inside. The tank body (1) is also provided with a stirring device (3), wherein the stirring device (3) comprises a driving device (4) and a stirring shaft (5) driven by the driving device (4) and located on the central axis of the tank body (1), and a stirring structure (6) which can be extended radially toward the tank body (1) is provided on the stirring shaft (5).

2. A stirred crystallization reactor according to claim 1, characterized in that: The heat exchange structure is a jacket (7) disposed in contact with the outer wall of the tank body (1), a flow channel (8) for the heat exchange medium to flow is disposed in the jacket (7), a liquid inlet pipe (9) is connected to one side of the top of the jacket (7), a liquid outlet pipe (10) is connected to one side of the bottom of the jacket (7), and a drainage structure is disposed in the flow channel (8).

3. A stirred crystallization reactor according to claim 2, characterized in that, The drainage structure is a drainage plate (11) arranged in the flow channel (8); the drainage plate (11) is a spiral structure in the jacket (7), and two sides of the drainage plate (11) are in contact with the side wall of the flow channel.

4. A stirred crystallization reactor according to claim 1, characterized in that: The stirring structure (6) comprises a fixed rod (14) connected to the stirring shaft (5) at one end and extending in the radial direction of the tank body (1) at the other end; the fixed rod (14) is a hollow structure; an opening (15) is provided on the side of the fixed rod (14) away from the stirring shaft (5); an extension rod (16) is slidably provided; the extension rod (16) and the fixed rod (14) are elastically connected; and a wall scraping structure is provided on the side of the extension rod (16) away from the fixed rod (14).

5. A stirred crystallization reactor according to claim 4, characterized in that: The extension rod (16) is connected to a pressure block (17) slidably arranged in a slide groove in the fixed rod (14); the pressure block (17) is fixedly connected to a first spring (18); and the other end of the first spring (18) is fixedly connected to a limiting ring (19) at the opening (15).

6. A stirred crystallization reactor according to claim 5, characterized in that: The wall scraping structure is a scraping plate (20) arranged along the length direction of the tank body (1), one end of the scraping plate 2 (0) is fixedly connected to the extension rod (16), and the contact surface between the scraping plate 2 (0) and the inner wall of the tank body (1) is a convex conical structure (21).

7. A stirred crystallization reactor according to claim 6, characterized in that: The stirring structures (6) are arranged circumferentially around the stirring shaft (5), and there are at least two stirring structures (6).

8. A stirred crystallization reactor according to claim 7, characterized in that: A bottom wall scraping structure is also provided on the side of the stirring shaft (5) away from the driving device (4), and the bottom wall scraping structure includes an arc-shaped scraper (22) capable of scraping the bottom wall of the tank body (1), and the arc-shaped scraper (22) and the scraper plate (20) are arranged in the same manner.

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