Reaction kettle and mixing and stirring device thereof

Abstract

This utility model belongs to the field of chemical equipment technology, specifically relating to a reaction vessel and its mixing and stirring device. The reaction vessel includes: a vessel body with a feeding port at its top; a drive mechanism located at the bottom of the vessel body; and a feeding pipe, the upper end of which is connected to the feeding port, and the lower end of which is connected to the drive mechanism. The feeding pipe has a discharge end at its bottom for conveying materials to the bottom area of ​​the vessel body. The drive mechanism is adapted to drive the feeding pipe to rotate around its central axis. This reaction vessel, by placing the discharge end of the added liquid material at the bottom of the vessel body and driving the feeding pipe to rotate via the drive mechanism, can directly convey and uniformly release low-density materials added midway to the bottom of the reaction vessel, thus overcoming the problem that low-density materials easily float on the liquid surface and are difficult to mix evenly.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, and in particular relates to a reaction vessel and its mixing and stirring device. Background Technology

[0002] Reactors, through the design of the container structure (such as the installation of stirring devices, heating / cooling jackets, etc.) and the configuration of corresponding process parameters, can realize multiple functions such as material mixing, heat transfer, reaction, and evaporation. They are widely used in chemical, pharmaceutical, food, and new materials fields.

[0003] Currently, the most common mid-process feeding structure for reactors involves opening a feeding port on the top cover or upper side wall. When new material needs to be added, the operator pours it into this fixed feeding port, allowing it to fall onto the existing liquid surface in the reactor under its own weight. However, if the density of the liquid material added mid-process is lower than that of the existing material in the reactor, it easily floats on the surface. Since the agitator blades are mostly located in the lower middle layer of the reactor, their agitation force on the surface material is limited, making it difficult for the low-density liquid material added mid-process to quickly and evenly diffuse throughout the reaction system. This results in uneven reaction, the generation of unnecessary byproducts, and ultimately, product defects.

[0004] Therefore, how to solve the problem of uneven reaction caused by the addition of low-density liquid materials in the reactor midway is a technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one reactor and its mixing and stirring device.

[0007] In a first aspect, embodiments of this disclosure provide a reaction vessel, comprising: The vessel body has a feeding port at its top; The drive mechanism is located at the bottom of the vessel body; The feeding tube has its upper end connected to the feeding port and its lower end connected to the drive mechanism. The bottom end of the feeding pipe is provided with a discharge end for conveying materials to the bottom area of ​​the reactor body; and, The drive mechanism is adapted to drive the feeding tube to rotate about its central axis.

[0008] In one optional embodiment, the bottom end of the feeding pipe is connected to a herringbone branch pipe, and the discharge end is located at the end of each herringbone branch pipe; the herringbone branch pipes are connected to each other by a connector, and the connector is connected to the drive mechanism for transmission.

[0009] In one optional embodiment, the discharge end includes at least one first nozzle and at least one second nozzle; The first nozzle is located at the end of the herringbone branch pipe; The second nozzle is positioned below the first nozzle.

[0010] In one optional embodiment, both the first and second nozzles are provided with a plurality of discharge holes; The discharge holes on the first nozzle are arranged circumferentially. The discharge port on the second nozzle is oriented towards the feed port.

[0011] In one optional embodiment, the second nozzle is disposed on the upper end face of the connector, and the connector has a hollow structure inside, through which the second nozzle is connected to the herringbone branch pipe.

[0012] In one alternative embodiment, the bottom of the connector is connected to the output shaft of the drive mechanism to achieve synchronous rotation.

[0013] In one optional embodiment, the driving mechanism includes a drive motor disposed at the bottom of the vessel body, and the output shaft of the drive motor is connected to the feeding pipe in a driving connection.

[0014] Secondly, embodiments of this disclosure also provide a mixing and stirring apparatus for a reaction vessel, comprising: Drive mechanism; The feeding pipe is connected to the drive mechanism via a transmission. The bottom end of the feeding pipe is provided with a discharge end, which is used to transport materials to the bottom area of ​​the reactor body.

[0015] In one optional embodiment, the bottom end of the feeding pipe is connected to a herringbone branch pipe, and the discharge end is located at the end of each herringbone branch pipe.

[0016] In one optional embodiment, the discharge end includes at least one first nozzle and at least one second nozzle; The first nozzle is located at the end of the herringbone branch pipe; The second nozzle is positioned below the first nozzle.

[0017] The beneficial effect of this utility model is that by setting the discharge end of the liquid material added in the middle to the bottom of the reactor body and driving the feeding pipe to rotate through the drive mechanism, the low-density liquid material added in the middle can be directly transported and evenly released to the bottom of the reactor, thereby overcoming the problem that the material is easy to float on the liquid surface and difficult to mix evenly due to its low density.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A cross-sectional view of a reaction vessel provided in an embodiment of this disclosure; Figure 2 This is a perspective view of a reaction vessel provided in an embodiment of the present disclosure.

[0022] In the picture: 100. Kettle body; 110. Feed port; 200. Drive mechanism; 210. Drive motor; 211. Output shaft; 300. Feed pipe; 310. Discharge end; 320. Herringbone branch pipe; 311. First nozzle; 312. Second nozzle; 313. Discharge hole; 400. Connecting parts. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the following drawbacks of existing technologies: Currently, the most common mid-process feeding structure for reactors involves opening a feeding port on the top cover or upper side wall. When new material needs to be added, the operator pours it into this fixed feeding port, allowing it to fall onto the existing liquid surface within the reactor under its own weight. However, if the density of the material added mid-process is lower than that of the existing material in the reactor, it easily floats on the surface. Since the stirring blades are mostly located in the lower middle layer of the reactor, their agitation force on the surface material is limited, making it difficult for the low-density material added mid-process to quickly and evenly diffuse throughout the reaction system. This results in uneven reaction, the generation of unnecessary byproducts, and ultimately, product defects.

[0030] Based on the above research, this disclosure provides a reaction vessel that directly conveys low-density materials added midway to the bottom of the reaction vessel through a feeding pipe. At the same time, a drive mechanism drives the feeding pipe to rotate, so that the low-density materials are evenly distributed at the bottom of the reaction vessel, thus solving the above-mentioned problems.

[0031] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] See Figure 1This disclosure provides a reaction vessel, including: a vessel body 100, which serves as the main container for material reaction, and a feed port 110 at its top for facilitating the addition of new materials during the reaction. A drive mechanism 200, acting as a power source, is located at the bottom of the vessel body 100. A feed pipe 300 is also provided inside the vessel body 100, with its upper end connected to the feed port 110 to receive liquid materials from the feed port 110. The liquid materials can be one of the following: low-density organic solvents (such as n-hexane, cyclohexane, diethyl ether, benzene solvents), surfactant solutions, auxiliary agent solutions, liquid-phase systems containing foaming agents, and light oils. The lower end of the feed pipe 300 is connected to the drive mechanism 200, allowing the feed pipe 300 to rotate relative to the vessel body 100 under the action of the drive mechanism 200. A feeding port 110 is provided at the top; a drive mechanism 200 is located at the bottom of the vessel body 100; a feeding pipe 300 is connected at its upper end to the feeding port 110 and at its lower end to the drive mechanism 200; a discharge end 310 is provided at the bottom of the feeding pipe 300, which is used to discharge the liquid material delivered by the feeding pipe 300. When it is necessary to add material midway, new liquid material enters the feeding pipe 300 from the feeding port 110. Driven by the drive mechanism 200, the feeding pipe 300 rotates together with its discharge end 310 at its bottom. The liquid material is thrown out from the rotating discharge end 310. On the one hand, because it is released at the bottom, it effectively overcomes the problem of floating of low-density liquid material; on the other hand, the rotational motion gives the liquid material centrifugal force, which causes it to rapidly diffuse radially at the bottom of the vessel, achieving rapid and uniform mixing with the original liquid material in the vessel, thereby overcoming the problem that it is easy to float on the liquid surface and difficult to mix evenly due to its low density.

[0035] See Figure 1 and Figure 2 In some embodiments, a herringbone branch pipe 320 is connected to the bottom end of the feeding pipe 300. The herringbone branch pipe 320 is preferably composed of two radially symmetrically extending branch pipes. A discharge end 310 is located at the end of each herringbone branch pipe 320. Specifically, the herringbone branch pipe 320 is fixedly connected to the lower end of the feeding pipe 300 and can rotate with the feeding pipe 300. Each herringbone branch pipe 320 has a discharge end 310 at its end. The discharge end 310 can be a simple opening or an optimized nozzle structure. During rotation with the feeding pipe 300, the herringbone branch pipe 320's structure shears and disturbs the surrounding fluid, thus acting similarly to a stirring blade. This effectively disperses and mixes the liquid material at the bottom of the vessel 100, especially creating strong turbulence around the discharge end 310, greatly enhancing the mixing effect.

[0036] See also Figure 2In some embodiments, the discharge end 310 employs an optimized dual-nozzle design to achieve three-dimensional distribution and efficient mixing of the liquid material. Specifically, the discharge end 310 includes at least one first nozzle 311 and at least one second nozzle 312. The first nozzle 311 is directly disposed at the end of the herringbone branch pipe 320. After the liquid material enters the herringbone branch pipe 320 through the main pipe, it can be conveyed to the two first nozzles 311. The second nozzle 312 is disposed below the first nozzle 311. Specifically, a hollow connector 400 is disposed between the first nozzle 311 and the second nozzle 312. The connector 400 communicates with the herringbone branch pipe 320. The liquid material enters the first nozzle 311 through the herringbone branch pipe 320. While the first nozzle 311 sprays the liquid material, excess liquid material will enter the second nozzle 312 from the first nozzle 311 and finally be sprayed out from the second nozzle 312.

[0037] See also Figure 2 In some embodiments, both the first nozzle 311 and the second nozzle 312 have a plurality of discharge holes 313. The discharge holes 313 on the first nozzle 311 are arranged circumferentially, and the axial direction of these circumferentially arranged discharge holes 313 is perpendicular to the radial direction of the reactor, or slightly inclined downward, so that the liquid material sprayed from them is mainly sprayed in a horizontal or near-horizontal circumferential direction. The discharge holes 313 on the second nozzle 312 are arranged toward the feed port 110. When the drive mechanism 200 drives the feed pipe 300 to rotate, the two nozzles work together to form a three-dimensional composite flow field in the reactor. Specifically, the liquid material sprayed from the circumferential discharge holes 313 of the first nozzle 311 is similar to a rotating "water ring", which generates a strong shearing and stirring effect on the liquid material in the radial section of the reactor, effectively eliminating the flow dead zone near the reactor wall and achieving radial uniform mixing. The liquid material sprayed from the second nozzle 312 toward the discharge hole 313 of the upper feed port 110 forms one or more upward jets. This jet directly acts on the axial space of the reactor and strongly agitates the upper fluid, thereby effectively breaking the concentration gradient in the vertical direction and solving the problem of uneven axial mixing.

[0038] See Figure 1 and Figure 2 In some embodiments, the drive mechanism 200 includes a drive motor 210. The drive motor 210 is fixedly mounted to the outer bottom of the vessel body 100. This bottom mounting method helps to lower the overall center of gravity of the equipment and enhances operational stability.

[0039] See also Figure 1 and Figure 2In some embodiments, the output shaft 211 of the drive motor 210 extends upward into the interior of the vessel body 100. The lower end of the feeding pipe 300 is connected to the top end of the output shaft 211 via a connector 400. Specifically, the connector 400 and the output shaft 211 can rotate synchronously through a fixed connection or a transmission connection. Its core function is to ensure that the power of the drive motor 210 can be effectively transmitted to the feeding pipe 300, causing it to rotate synchronously with the output shaft 211. During operation, the drive motor 210 starts, its output shaft 211 rotates, and the power drives the feeding pipe 300 to rotate around its central axis via the connector 400. This bottom-driven, bottom-transmission design makes the force distribution of the feeding pipe 300 more reasonable, resulting in smooth operation and less vibration. At the same time, separating the drive motor 210 from the static sealing area of ​​the feeding port 110 at the top of the vessel body 100 simplifies the top structure and facilitates maintenance.

[0040] See Figure 1 and Figure 2 Some embodiments also provide a mixing and stirring device for a reactor, including: a drive mechanism 200; a feeding pipe 300, which is drivenly connected to the drive mechanism 200; and a discharge end 310 at the bottom of the feeding pipe 300 for conveying liquid materials to the bottom area of ​​the reactor body 100. When the mixing and stirring device is installed on the reactor, the upper end of its feeding pipe 300 can be connected to a feed pipe fixed externally to the reactor via a rotary joint, ensuring continuous feeding even during rotation. The drive mechanism 200 is fixed to a mounting base at the bottom of the reactor to provide power. This modular mixing and stirring device facilitates the standardized promotion and replacement / maintenance of this efficient mixing technology. Users do not need to modify the entire reactor; they only need to open an interface at a suitable location on the existing reactor to install this device, gaining the ability to feed from the bottom and mix by rotation, effectively reducing equipment upgrade costs and lowering the barrier to entry.

[0041] In summary, by placing the discharge end 310 of the material added midway at the bottom of the vessel body 100 and driving the feeding pipe 300 to rotate through the drive mechanism 200, this reactor can directly transport and uniformly release the low-density material added midway to the bottom of the reactor, thereby overcoming the problem that the material is easy to float on the liquid surface and difficult to mix evenly due to its low density.

[0042] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0044] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0045] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0046] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A reaction vessel, characterized by, include: The vessel body (100) has a feeding port (110) at its top. A drive mechanism (200) is disposed at the bottom of the vessel body (100); The upper end of the feeding tube (300) is connected to the feeding port (110), and the lower end is connected to the driving mechanism (200) for transmission. The bottom end of the feeding pipe (300) is provided with a discharge end (310) for conveying liquid materials to the bottom area of ​​the vessel body (100); and, The drive mechanism (200) is adapted to drive the feeding tube (300) to rotate about its central axis.

2. The reaction vessel as described in claim 1, characterized in that, The bottom end of the feeding pipe (300) is connected to a herringbone branch pipe (320), and the discharge end (310) is located at the end of each herringbone branch pipe (320); The herringbone branch pipes (320) are connected to each other by a connector (400), and the connector (400) is connected to the drive mechanism (200) for transmission.

3. The reaction vessel as described in claim 2, characterized in that, The discharge end (310) includes at least one first nozzle (311) and at least one second nozzle (312). The first nozzle (311) is located at the end of the herringbone branch pipe (320); The second nozzle (312) is located below the first nozzle (311).

4. The reaction vessel as described in claim 3, characterized in that, The first nozzle (311) and the second nozzle (312) are each provided with a plurality of discharge holes (313); The discharge hole (313) on the first nozzle (311) is arranged circumferentially. The discharge hole (313) on the second nozzle (312) is set in the direction of the feeding port (110).

5. The reaction vessel as described in claim 4, characterized in that, The second nozzle (312) is disposed on the upper end face of the connector (400), and the connector (400) has a hollow structure inside. The second nozzle (312) is connected to the herringbone branch pipe (320) through the hollow structure.

6. The reaction vessel as described in claim 5, characterized in that, The bottom of the connector (400) is connected to the output shaft (211) of the drive mechanism (200) to achieve synchronous rotation.

7. The reaction vessel as described in claim 1, characterized in that, The drive mechanism (200) includes a drive motor (210) disposed at the bottom of the vessel body (100), and the output shaft (211) of the drive motor (210) is connected to the feeding pipe (300) for transmission.

8. A mixing and stirring device for a reaction vessel, characterized in that include: Drive mechanism (200); The feeding pipe (300) is connected to the drive mechanism (200) for transmission; The bottom end of the feeding pipe (300) is provided with a discharge end (310) for conveying materials to the bottom area of ​​the vessel body (100).

9. The mixing and stirring device as described in claim 8, characterized in that, The bottom end of the feeding pipe (300) is connected to a herringbone branch pipe (320), and the discharge end (310) is located at the end of each herringbone branch pipe (320).

10. The mixing and stirring apparatus as described in claim 9, characterized in that, The discharge end (310) includes at least one first nozzle (311) and at least one second nozzle (312). The first nozzle (311) is located at the end of the herringbone branch pipe (320); The second nozzle (312) is located below the first nozzle (311).

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