A vertical stirring tank

Abstract

This utility model relates to the field of stirred tank technology, specifically to a vertical stirred tank, including a stirred tank shell, a discharge pipe, and a stirring device. The stirred tank shell has a reaction chamber, and the discharge pipe has a discharge chamber located at the bottom of the stirred tank shell, with the discharge chamber communicating with the reaction chamber. The stirring device includes a rotating shaft and stirring blades and propulsion blades connected to the rotating shaft. The stirring blades are located within the reaction chamber, and the propulsion blades are located within the discharge chamber. The rotating shaft drives the stirring blades and propulsion blades to rotate, causing the propulsion blades to push the material in the discharge chamber into the reaction chamber. By providing propulsion blades within the discharge chamber, the material in the discharge chamber is fed into the reaction chamber to participate in a full chemical reaction, thereby avoiding the generation of impurities and blockage of the discharge chamber.

Description

Technical Field

[0001] This utility model relates to the field of mixing tank technology, specifically to a vertical mixing tank. Background Technology

[0002] In the chemical industry, vertical reactors with stirring functions are commonly used equipment for the reaction, storage, and mixing of raw materials. When used for raw material reactions, solid and liquid reactants are typically added sequentially, and then stirred using the stirring device inside the vertical reactor to ensure thorough mixing and a complete reaction. The discharge port of the vertical reactor is usually located at the bottom; after the chemical reaction is complete, the material in the reactor is discharged downwards through the discharge port.

[0003] The discharge port at the bottom of a vertical reactor is typically a short pipe extending vertically to facilitate connection to an external valve, allowing material to be discharged vertically downwards. When material is added to the reactor, some falls into the discharge port. The space inside the discharge port is located below the internal cavity of the reactor body, and because it is much smaller than the internal cavity, it forms a "dead zone." Therefore, when the stirring device is running, it primarily drives the flow of material within the reactor body, while the material in the discharge port is difficult to move. This means the material in the discharge port does not react sufficiently within the reactor, wasting raw materials and resulting in impurities in the product. Furthermore, in some cases, the insufficiently reacted material in the discharge port clumps together, clogging the outlet. Utility Model Content

[0004] The purpose of this invention is to provide a vertical stirring vessel that solves the problem of insufficient material reaction in the discharge port, leading to impurities and discharge port blockage. By setting propulsion blades in the discharge chamber, the propulsion blades can send the material in the discharge chamber into the reaction chamber to participate in a full chemical reaction, thereby avoiding the generation of impurities and discharge chamber blockage.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a vertical stirring tank, comprising a stirring tank shell, a discharge pipe, and a stirring device. The stirring tank shell has a reaction chamber, and the discharge pipe has a discharge chamber. The discharge pipe is located at the bottom of the stirring tank shell, and the discharge chamber is connected to the reaction chamber. The stirring device includes a rotating shaft and stirring blades and a propulsion blade connected to the rotating shaft. The stirring blades are located in the reaction chamber, and the propulsion blades are located in the discharge chamber. The rotating shaft drives the stirring blades and the propulsion blades to rotate, so that the propulsion blades push the material in the discharge chamber into the reaction chamber.

[0006] In one embodiment, the distance between the propulsion blade and the inner wall of the discharge pipe is 30%-70% of the radius of the discharge chamber.

[0007] In one embodiment, the distance between the propulsion blade and the inner wall of the discharge pipe is 2-6 cm.

[0008] In one embodiment, the rotating shaft includes a stirring section and a propulsion section, the stirring blades are disposed in the stirring section, the propulsion blades are disposed in the propulsion section, and the stirring section and the propulsion section are detachably connected.

[0009] In one embodiment, the stirring section and the propulsion section are connected by a flange.

[0010] In one embodiment, the propulsion blade is a propeller blade, so that when the rotation direction of the rotating shaft changes, the direction in which the propulsion blade pushes the material in the discharge chamber changes.

[0011] In one embodiment, the stirring device further includes a support and a rotating sleeve. The rotating sleeve has a rotating hole, and the rotating shaft passes through the rotating hole. The side wall of the rotating sleeve is provided with a first magnetic part arranged around the rotating hole, and the side wall of the rotating shaft is provided with a second magnetic part arranged circumferentially. The second magnetic part is at least partially radially corresponding to the first magnetic part, and the first magnetic part and the second magnetic part have opposite magnetic properties.

[0012] In one embodiment, the first magnetic part and the second magnetic part have the same vertical length and the same height, so as to correspond radially to the rotating sleeve.

[0013] In one embodiment, the diameter of the portion of the rotating shaft located within the rotating hole is smaller than the inner diameter of the rotating hole, so that the outer wall of the rotating shaft is spaced apart from the inner wall of the rotating hole.

[0014] In one embodiment, the support is provided with a mounting hole, the rotating sleeve is provided with a limiting flange around its periphery, the rotating sleeve passes through the mounting hole, and the limiting flange rests on the upper side of the support.

[0015] The advantages of this application compared to the prior art are: In this embodiment, the rotating propulsion blades can drive the material flow in the discharge chamber, thereby improving the fluidity of the material in the discharge chamber. This allows the material in the discharge chamber to leave the discharge chamber and enter the reaction chamber to participate in the chemical reaction, ensuring that all materials in the stirred tank are fully reacted, avoiding impurities, ensuring the quality of the final discharged material, and preventing the material in the discharge chamber from caking due to insufficient reaction, thus preventing the discharge chamber from being blocked and ensuring the smooth discharge of the material. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the planar structure of a vertical stirring vessel according to an embodiment of this application; Figure 2 This is a schematic diagram showing the accumulation of material inside the discharge chamber. Figure 3 This is a schematic diagram illustrating the material flow driven by the propulsion blades in an embodiment of this application; Figure 4 This is a schematic diagram of the rotating shaft passing through the rotating sleeve in an embodiment of this application; Figure 5 This is a partial cross-sectional perspective view of a vertical stirring vessel according to an embodiment of this application; Figure 6 This is a schematic diagram of the propulsion section described in the embodiments of this application; Figure 7 This is a schematic diagram of the stirring section described in the embodiments of this application; Figure 8 This is a schematic diagram of the rotating sleeve described in the embodiments of this application; Figure 9 This is a schematic diagram of the support structure described in the embodiments of this application. Detailed Implementation

[0018] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0019] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0022] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0023] Please refer to Figure 1 The diagram shows a planar structural schematic of a vertical stirring vessel provided in an embodiment of this application.

[0024] like Figure 1 As shown in the figure, the vertical stirred tank of this application embodiment includes a stirred tank shell 100, a discharge pipe 200, and a stirring device 300. The stirred tank shell 100 has a reaction chamber 110, and the discharge pipe 200 has a discharge chamber 210. The discharge pipe 200 is located at the bottom of the stirred tank shell 100, and the discharge chamber 210 is connected to the reaction chamber 110. In use, the material is placed into the reaction chamber 110 inside the stirred tank shell 100, and the stirring device 300 is started to stir, so that the material reacts fully in the reaction chamber 110. After the reaction process is completed, the material is discharged through the discharge chamber 210 of the discharge pipe 200. The discharge pipe 200 is usually connected to an external valve. After the material reaction is completed, the external valve is opened, and the material in the stirred tank can be discharged downward through the discharge pipe 200.

[0025] Please refer to Figure 2 The diagram illustrates the material accumulation within the discharge chamber 210. When material is placed into the stirred tank, since the discharge chamber 210 is connected to the reaction chamber 110, although most of the material is located within the reaction chamber 110, some material also falls into the discharge chamber 210 under gravity. The stirring device 300 stirs the material in the reaction chamber 110 to promote the reaction. However, the discharge chamber 210 is located below the reaction chamber 110 and has a narrow space, forming a "dead zone." The material falling into the discharge chamber 210 is trapped due to its poor flowability and cannot easily enter the reaction chamber 110 to participate in the reaction process. This results in insufficient reaction of the material in the discharge chamber 210, causing impurities in the discharged material. Furthermore, the material in the discharge chamber 210 is prone to caking into lumps, causing blockage of the discharge chamber 210 and affecting the discharge of the material.

[0026] Please refer to Figure 1The difference between this embodiment and the prior art lies in that the stirring device 300 includes a rotating shaft 310 and stirring blades 320 and propulsion blades 330 connected to the rotating shaft 310. The stirring blades 320 are located inside the reaction chamber 110, and the propulsion blades 330 are located inside the discharge chamber 210. The rotating shaft 310 drives the stirring blades 320 and the propulsion blades 330 to rotate, so that the propulsion blades 330 push the material in the discharge chamber 210 into the reaction chamber 110. In this embodiment, the rotating shaft 310 needs to be connected to a drive mechanism, which provides rotational power to the rotating shaft 310, thereby driving the stirring blades 320 and the propulsion blades 330 to rotate. The stirring blade 320 is located inside the reaction chamber 110. When the stirring blade 320 rotates, it stirs the material inside the reaction chamber 110 to promote a full reaction. The propulsion blade 330 is located inside the discharge chamber 210. When the propulsion blade 330 rotates, it can push the material in the discharge chamber 210 to flow, thereby improving the fluidity of the material in the discharge chamber 210. This allows the material in the discharge chamber 210 to leave the discharge chamber 210 and enter the reaction chamber 110 to participate in the chemical reaction. This ensures that all the material in the stirred tank is fully reacted, avoids impurities, ensures the quality of the final discharged material, and prevents the material in the discharge chamber 210 from clumping due to insufficient reaction, thus preventing the discharge chamber 210 from being blocked and ensuring smooth discharge of the material.

[0027] It should be noted that in this embodiment, the propulsion blade 330 is a blade capable of propelling material flow in at least one direction when rotating. In this embodiment, when the stirring device 300 is stirring the material, the outlet of the discharge chamber 210 is closed (it is only opened after the stirring reaction is completed to discharge the chemically reacted material), and the direction in which the propulsion blade 330 pushes the material can be upward or downward. When the pushing direction is upward, please refer to... Figure 3 The propulsion blades 330 directly push the material in the discharge chamber 210 towards the reaction chamber 110, allowing the material to enter the reaction chamber 110. When the pushing direction is downward, the propulsion blades 330 push the material in the discharge chamber 210 downward. Since the outlet of the discharge chamber 210 is in a closed state, the material will turn back and flow upward after encountering resistance. The material flows upward along the part near the inner wall of the discharge chamber 210 (avoiding direct contact with the propulsion blades 330), and eventually it can also enter the reaction chamber 110. Although this method does not directly push the material towards the reaction chamber 110, it still improves the flowability of the material in the discharge chamber 210 so that the material can enter the reaction chamber 110.

[0028] In the two embodiments described above, the second method of pushing the material downwards has a lower feeding efficiency in the discharge chamber 210, and the material in the discharge chamber 210 vibrates violently, resulting in significant noise. Therefore, this embodiment preferably uses an upward-propelling direction for the propulsion blades 330 to directly push the material in the discharge chamber 210 towards the reaction chamber 110. This improves the feeding efficiency from the discharge chamber 210 to the reaction chamber 110, reduces material vibration in the discharge chamber 210, and lowers noise.

[0029] Please refer to Figure 1 , Figure 3 Preferably, in this embodiment of the application, the distance between the propulsion blade 330 and the inner wall of the discharge pipe 200 is 30%-70% of the radius of the discharge chamber 210. Thus, there is a distance between the propulsion blade 330 and the inner wall of the discharge chamber 210, and the rotation shaft 310 is coaxially arranged with the discharge chamber 210. Taking the embodiment where the propulsion blade 330 pushes the material upwards as an example, the material in the area of ​​the discharge chamber 210 corresponding to the propulsion blade 330 in the vertical direction is pushed upwards to directly enter the reaction chamber 110 to participate in the chemical reaction. Meanwhile, the area of ​​the discharge chamber 210 that does not directly correspond to the propulsion blade 330 in the vertical direction is continuously filled by material from the reaction chamber 110, thereby achieving a vertical circulation of material within the discharge chamber 210. Thus, the material in the discharge chamber 210 has strong fluidity, and the discharge chamber 210 is no longer a "dead zone." No material is trapped in the discharge chamber 210 and unable to undergo sufficient chemical reaction, allowing all the material in the stirred tank to undergo a full chemical reaction. Specifically, in this embodiment, it is further preferred that the distance between the propulsion blade 330 and the inner wall of the discharge pipe 200 is 2-6 cm.

[0030] In this embodiment, the rotating shaft 310 drives the stirring blade 320 and the propulsion blade 330 to rotate. Since the propulsion blade 330 is located inside the discharge chamber 210, the rotating shaft 310 also needs to extend into the discharge chamber 210 for the propulsion blade 330 to be connected and installed. Please refer to... Figure 5 , Figure 6Preferably, the rotating shaft 310 includes a stirring section 311 and a propulsion section 312. The stirring blade 320 is disposed in the stirring section 311, and the propulsion blade 330 is disposed in the propulsion section 312. The stirring section 311 and the propulsion section 312 are detachably connected. Thus, the stirring section 311 and the stirring blade 320 can be manufactured as a single unit, and the propulsion section 312 and the propulsion blade 330 can also be manufactured as a single unit. The stirring section 311 and the propulsion section 312 can be assembled together for use. This reduces manufacturing difficulty and cost. Furthermore, when the stirring blade 320 or the propulsion blade 330 is damaged, the stirring section 311 and the propulsion section 312 can be disassembled and separated for repair or replacement. Repair is convenient, and replacement only requires replacing the stirring section 311 and the stirring blade 320 as a whole (when the stirring blade 320 is damaged) or the propulsion section 312 and the propulsion blade 330 as a whole (when the propulsion blade 330 is damaged), thereby reducing maintenance costs.

[0031] Please refer to Figure 4 Furthermore, in this embodiment, the stirring section 311 and the propulsion section 312 are preferably connected by flanges 313. Specifically, the stirring section 311 has a flange 313 at one end facing the propulsion section 312, and the propulsion section 312 has a flange 313 at one end facing the stirring section 311. After the stirring section 311 and the propulsion section 312 are spliced ​​together by flanges, the two flanges 313 are fastened with bolts, thereby achieving a fixed connection between the stirring section 311 and the propulsion section 312. This not only ensures a high degree of reliability but also facilitates disassembly.

[0032] In this embodiment, the propulsion blade 330 is a blade that can push material flow in at least one direction when rotating. In some embodiments, it is preferable that when the rotating shaft 310 drives the stirring blade 320 to stir in the reaction chamber 110, the propulsion blade 330 pushes the material upward as it rotates with the rotating shaft 310, so as to directly push the material in the discharge chamber 210 into the reaction chamber 110. Normally, after the material in the stirred tank has completed the reaction, the stirring device 300 stops operating, and then the external valve connected to the discharge pipe 200 is opened, so that the reacted material flows downward through the discharge chamber 210 of the discharge pipe 200 under its own gravity, thereby being discharged from the stirred tank. Due to the small space of the discharge chamber 210, the material discharge efficiency is low.

[0033] Therefore, in this embodiment, the propulsion blade 330 is preferably a propeller blade, so that when the rotation direction of the rotating shaft 310 changes, the direction of the propulsion blade 330 pushing the material in the discharge chamber 210 changes. The propulsion blade 330 is a propeller blade; for example, when the propulsion blade 330 is mounted on the rotating shaft 310, it can be determined that it generates an upward pushing force when rotating forward and a downward pushing force when rotating backward. Thus, during the material reaction process, the rotating shaft 310 drives the propulsion blade 330 to rotate forward, pushing the material in the discharge chamber 210 upward, allowing the material in the discharge chamber 210 to enter the reaction chamber 110 and participate in a full chemical reaction. During the material discharge process, the rotating shaft 310 drives the propulsion blade 330 to rotate backward, continuously pushing the material in the reaction chamber 110 into the discharge chamber 210, where it is pushed downward by the propulsion blade 330, thereby accelerating the material discharge and improving the material discharge efficiency.

[0034] During operation, both the stirring blades 320 and the propulsion blades 330 of the stirring device 300 interact with the material, and the interaction force makes the rotating shaft 310 prone to shaking. Therefore, please refer to... Figure 4 Preferably, in one embodiment of this application, the stirring device 300 further includes a support 350 and a rotating sleeve 340. The rotating sleeve 340 has a rotating hole 341, and the rotating shaft 310 passes through the rotating hole 341. A first magnetic portion 343 is arranged around the rotating hole 341 on the sidewall of the rotating sleeve 340, and a second magnetic portion 315 is arranged circumferentially on the sidewall of the rotating shaft 310. The second magnetic portion 315 is at least partially radially corresponding to the first magnetic portion 343, and the first magnetic portion 343 and the second magnetic portion 315 have opposite magnetic properties. The support 350 supports the rotating sleeve 340, and the rotating sleeve 340 supports the rotating shaft 310. The first magnetic part 343 and the second magnetic part 315 have opposite magnetic properties, so that when the rotating shaft 310 is tilted, it will be supported by magnetic force, thereby suppressing the shaking of the rotating shaft 310 and maintaining its vertical state. This ensures the smooth operation of the stirring device 300, thus guaranteeing the stirring effect and reducing the mutual wear between the rotating shaft 310 and the rotating sleeve 340. Furthermore, the first magnetic parts 343 and the second magnetic parts 315 are evenly spaced along the circumference.

[0035] Please refer to Figure 7 , Figure 8 , Figure 9Furthermore, it is preferable that the first magnetic part 343 and the second magnetic part 315 have the same vertical length and the same height, so as to correspond radially along the rotating sleeve 340 to fully utilize the magnetic force. Specifically, the outer wall of the rotating sleeve 340 is provided with a first groove 342, and the outer wall of the rotating shaft 310 is provided with a second groove 314. The first magnetic part 343 is disposed in the first groove 342, and the second magnetic part 315 is disposed in the second groove 314, so that the first magnetic part 343 and the second magnetic part 315 are spaced apart, improving the uniformity of the magnetic force in the circumferential direction, thereby improving the stability of the rotating shaft 310.

[0036] Furthermore, in this embodiment of the application, it is preferable that the diameter of the portion of the rotating shaft 310 located within the rotating hole 341 is smaller than the inner diameter of the rotating hole 341, so that the outer wall of the rotating shaft 310 is spaced apart from the inner wall of the rotating hole 341. This prevents relative friction between the rotating shaft 310 and the rotating sleeve 340 during rotation, reducing the resistance of the rotating shaft 310, lowering the load on the drive mechanism, and extending the service life of both the rotating sleeve 340 and the rotating shaft 310. The upper end of the rotating shaft 310 needs to be connected to the drive mechanism, and the rotating shaft 310 is in a suspended state, without needing to be supported by the rotating sleeve 340.

[0037] Furthermore, in this embodiment, the support 350 is provided with a mounting hole 351, and the rotating sleeve 340 is provided with a limiting flange 344 on its periphery. The rotating sleeve 340 passes through the mounting hole 351, and the limiting flange 344 rests on the upper side of the support 350. In this way, the rotating sleeve 340 passes through the mounting hole 351 of the support 350 from top to bottom. The support 350 supports the rotating sleeve 340 by supporting the limiting flange 344. When the rotating sleeve 340 is severely worn, it can be directly removed from the support plate for replacement, which is convenient.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A vertical stirred tank, comprising a stirred tank shell, a discharge pipe, and a stirring device, wherein the stirred tank shell has a reaction chamber, the discharge pipe has a discharge chamber, the discharge pipe is located at the bottom of the stirred tank shell, and the discharge chamber communicates with the reaction chamber, characterized in that, The stirring device includes a rotating shaft and stirring blades and propulsion blades connected to the rotating shaft. The stirring blades are located in the reaction chamber, and the propulsion blades are located in the discharge chamber. The rotating shaft drives the stirring blades and propulsion blades to rotate, so that the propulsion blades push the material in the discharge chamber into the reaction chamber.

2. A vertical stirring vessel according to claim 1, characterized in that, The distance between the propulsion blade and the inner wall of the discharge pipe is 30%-70% of the radius of the discharge chamber.

3. A vertical stirring vessel according to claim 2, characterized in that, The distance between the propulsion blade and the inner wall of the discharge pipe is 2-6 cm.

4. A vertical stirring vessel according to claim 1, characterized in that, The rotating shaft includes a stirring section and a propulsion section. The stirring blades are disposed in the stirring section, and the propulsion blades are disposed in the propulsion section. The stirring section and the propulsion section are detachably connected.

5. A vertical stirring vessel according to claim 4, characterized in that, The mixing section and the propulsion section are connected by a flange.

6. A vertical stirring vessel according to claim 1, characterized in that, The propulsion blades are propeller blades, so that when the rotation direction of the rotating shaft changes, the direction in which the propulsion blades push the material in the discharge chamber changes.

7. A vertical stirring vessel according to claim 1, characterized in that, The stirring device further includes a support and a rotating sleeve. The rotating sleeve has a rotating hole, and the rotating shaft passes through the rotating hole. The side wall of the rotating sleeve is provided with a first magnetic part arranged around the rotating hole, and the side wall of the rotating shaft is provided with a second magnetic part arranged circumferentially. The second magnetic part is at least partially radially corresponding to the first magnetic part, and the first magnetic part and the second magnetic part have opposite magnetic properties.

8. A vertical stirring vessel according to claim 7, characterized in that, The first magnetic part and the second magnetic part have the same vertical length and the same height, so as to correspond to each other radially along the rotating sleeve.

9. A vertical stirring vessel according to claim 7, characterized in that, The diameter of the portion of the rotating shaft located within the rotating hole is smaller than the inner diameter of the rotating hole, so that the outer wall of the rotating shaft is spaced apart from the inner wall of the rotating hole.

10. A vertical stirring vessel according to claim 7, characterized in that, The support is provided with a mounting hole, and the rotating sleeve is provided with a limiting flange on its periphery. The rotating sleeve passes through the mounting hole, and the limiting flange rests on the upper side of the support.

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