A stirring structure of a cyclohexanone reaction kettle

Abstract

The utility model relates to cyclohexanone production equipment technical field discloses a kind of stirring structure of cyclohexanone reaction kettle, including placing box, multiple reaction kettles are installed in the middle of placing box by support column, transmission mechanism is equipped in reaction kettle for stirring cyclohexanone, transmission mechanism top is installed on the upper portion of placing box, placing box top side is equipped with cover plate and is closed transmission mechanism;Multiple collection boxes are equipped in the lower portion of placing box, for collecting stirring finished material;Feeding assembly is equipped for material to enter on the other side of placing box top;Reaction kettle lower end is connected with collection box by pipeline with valve, valve knob penetrates placing box;Transmission mechanism contains motor, driving wheel, driven wheel and belt, different rotating speed is realized by gear set, transmission shaft drives helical blade stirring in reaction kettle;Feeding assembly includes hopper, conveying pipe and closed plate with closed pad;The structure realizes multiple kettle simultaneous operation, stirring efficiency is high, feeding and collection are convenient, overall layout is compact.

Description

Technical Field

[0001] This utility model relates to the technical field of cyclohexanone production equipment, specifically to a stirring structure for a cyclohexanone reaction vessel. Background Technology

[0002] In the production of cyclohexanone, the stirring effect of the reactor directly affects the uniformity of material mixing and reaction efficiency, and different material ratios and reaction stages have different requirements for stirring rate.

[0003] Existing cyclohexanone reactors mostly employ a single-speed drive design for their stirring structures, directly driving the stirring components with a single motor. This prevents flexible adjustment of the stirring rate according to actual production needs, resulting in insufficient material mixing and difficulty in adapting to complex reaction conditions, thus hindering the improvement of reaction efficiency. Furthermore, existing equipment presents significant inconveniences in operation and maintenance. Its feeding structure is mostly a simple open type or threaded seal type; open types are prone to material volatilization or impurity entry, while threaded seal types are cumbersome to open and close. Product collection often requires additional conveying equipment, making the unloading process complex and inconvenient to transfer. In addition, the transmission components of the stirring mechanism are mostly encapsulated inside the equipment, requiring the disassembly of multiple shell components during maintenance, which is difficult, time-consuming, and labor-intensive, severely impacting production continuity.

[0004] Therefore, there is an urgent need for a stirring structure for a cyclohexanone reactor that can achieve multi-rate stirring, is easy to operate and maintain, in order to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a stirring structure for a cyclohexanone reactor.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stirring structure for a cyclohexanone reactor, comprising a placement box, wherein multiple reactors are mounted in the middle of the placement box via support columns, a transmission mechanism is provided inside the reactors for stirring cyclohexanone, the transmission mechanism is mounted above the placement box, and a cover plate is bolted to one side of the upper surface of the placement box for sealing the transmission mechanism, multiple collection boxes are provided below the placement box for collecting materials after stirring, and a feeding assembly is provided on the upper side of the placement box away from the transmission mechanism for feeding materials.

[0007] As a further description of the above technical solution:

[0008] The lower end of the reactor and the upper surface of the collection box are connected by a pipe, and one side of the pipe is connected to one end of a valve, while the other end of the valve passes through the box and is connected to a knob.

[0009] As a further description of the above technical solution:

[0010] The transmission mechanism includes a motor, the output shaft of which is connected to the upper surface of the drive wheel, and driven wheels are provided on both sides of the drive wheel. The drive wheel and the driven wheels are connected by a belt.

[0011] As a further description of the above technical solution:

[0012] The driven wheel on the left side of the driving wheel is connected to a speed-increasing gear via a rotating shaft, and the speed-increasing gear meshes with a second auxiliary gear. The driven wheel on the right side of the driving wheel is connected to a speed-reducing gear via a rotating shaft, and the speed-reducing gear meshes with a first auxiliary gear.

[0013] As a further description of the above technical solution:

[0014] The upper end of the drive shaft is connected between the drive wheel, the first auxiliary gear, and the second auxiliary gear. The lower end of the drive shaft passes through the top plate of the reactor. The upper and lower ends of the drive shaft inside the reactor are connected to the upper and lower ends of the spiral blades.

[0015] As a further description of the above technical solution:

[0016] The feeding assembly includes a hopper, which is installed inside the upper side of the placement box, and the lower end of the hopper is connected to the upper end of the conveying pipe. The lower end of the hopper passes through the interior of the placement box and is connected to the upper surface of the reactor.

[0017] As a further description of the above technical solution:

[0018] The upper surface of the hopper is hinged to the opposite side of the sealing plate on both sides, and the lower surface of the sealing plate is connected to the upper surface of the sealing pad, which seals the inside of the hopper.

[0019] This utility model has the following beneficial effects:

[0020] 1. By using a motor-driven drive wheel, combined with belt drive and meshing transmission design of reduction and speed-increasing gear sets, the spiral blades in multiple reaction vessels can form different stirring rates, which can adapt to the stirring requirements of different material ratios or reaction stages in cyclohexanone production, and improve the mixing uniformity and reaction efficiency.

[0021] Second, the feeding assembly enables the hopper to open and close quickly and seal through a hinged sealing plate with a sealing pad. Product collection can be completed by unloading through a knob-controlled valve. The collection box can be pulled out directly for transfer. The cover plate on top of the box is fixed with bolts. After disassembly, the transmission mechanism can be quickly exposed, which greatly reduces the difficulty of equipment operation and subsequent maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is an exploded view of the internal structure of the placement box of this utility model;

[0024] Figure 3 This is an exploded view of the feeding assembly structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the transmission mechanism structure of this utility model.

[0026] Legend:

[0027] 1. Placement box; 2. Reactor; 3. Transmission mechanism; 4. Feeding assembly; 5. Valve; 6. Collection box; 7. Cover plate; 401. Hopper; 402. Conveying pipe; 403. Sealing plate; 404. Sealing gasket; 301. Motor; 302. Drive wheel; 303. Driven wheel; 304. Belt; 305. Reduction gear; 306. First auxiliary gear; 307. Speed-increasing gear; 308. Second auxiliary gear; 309. Transmission shaft; 310. Spiral blade. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] 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 the orientation or positional relationship, are based on the orientation or positional relationship 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, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1:

[0032] like Figures 1 to 4 As shown in the figure, the stirring structure of the cyclohexanone reactor provided in this embodiment includes a placement box 1. Multiple reactors 2 are installed in the middle of the placement box 1 by a support column. A transmission mechanism 3 is provided inside the reactor 2. The transmission mechanism 3 is used for stirring cyclohexanone. The transmission mechanism 3 is installed above the placement box 1. A cover plate 7 is bolted to one side of the upper surface of the placement box 1. The cover plate 7 is used to close the transmission mechanism 3. Multiple collection boxes 6 are provided below the placement box 1. The collection boxes 6 are used for collecting after stirring. A feeding assembly 4 is provided on the upper side of the placement box 1 away from the transmission mechanism 3. The feeding assembly 4 is used for the entry of materials.

[0033] In this embodiment, the transmission mechanism 3 and the feeding assembly 4 constitute the stirring structure of a cyclohexanone reactor according to this application.

[0034] It should also be noted that the cyclohexanone reactor in this application can be an atmospheric pressure stirred reactor, a vacuum distillation reactor, a hydrogenation catalytic reactor, etc. Figure 1 In this embodiment, a cyclohexanone reactor with atmospheric pressure and stirring is used as an example for description. Of course, other types of cyclohexanone reactors can also adopt similar structures, which will not be described in detail below.

[0035] Understandable Figure 1 The diagram only schematically illustrates some of the components of the stirring structure; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Due to limitations, the stirring structure can also include, compared to Figure 1 More or fewer parts.

[0036] Furthermore, in this embodiment, a vertical cylindrical reactor 2 made of 316L stainless steel is mounted in the middle of the placement box 1 via a support column. A pull-out rectangular collection box 6 made of polypropylene is located inside the lower part of the placement box 1. Using the placement box 1 as a carrier, multiple components are integrated to achieve integrated material storage, mixing, and collection. Effect: Reduces equipment space occupation and improves production continuity.

[0037] Specifically, the lower end of the reactor 2 and the upper surface of the collection box 6 are connected by a pipe, and one side of the pipe is connected to one end of the valve 5, and the other end of the valve 5 passes through the placement box 1 and is connected to a knob.

[0038] In this embodiment, rotating the knob controls the opening and closing of valve 5, regulating the conveying of materials from reactor 2 to collection box 6, thereby achieving precise control of material unloading and avoiding leakage and waste.

[0039] Example 2:

[0040] A transmission mechanism 3 is provided based on embodiment 1.

[0041] Specifically, the transmission mechanism 3 includes a motor 301, the output shaft of which is connected to the upper surface of the drive wheel 302, and driven wheels 303 are provided on both sides of the drive wheel 302. The drive wheel 302 and the driven wheels 303 are connected by a belt 304.

[0042] In a preferred embodiment, the motor 301 drives the drive wheel 302 to rotate, and the belt 304 drives the driven wheels 303 on both sides to rotate synchronously, converting a single power source into multiple power outputs to provide power for stirring in multiple reaction vessels.

[0043] Specifically, the driven wheel 303 on the left side of the driving wheel 302 is connected to the speed-increasing gear 307 via a rotating shaft, and the speed-increasing gear 307 meshes with the second auxiliary gear 308. The driven wheel 303 on the right side of the driving wheel 302 is connected to the speed-reducing gear 305 via a rotating shaft, and the speed-reducing gear 305 meshes with the first auxiliary gear 306.

[0044] In this embodiment, the driven wheel 303 drives the speed-increasing gear 307 and the speed-reducing gear 305 to rotate. After the speed is changed by gear meshing, it is transmitted to the auxiliary gear to realize the differentiated adjustment of the power speed, providing a basis for different stirring rate requirements.

[0045] Specifically, the upper end of the drive shaft 309 is connected between the drive wheel 302, the first auxiliary gear 306, and the second auxiliary gear 308. The lower end of the drive shaft 309 passes through the top plate of the reactor 2. The upper and lower ends of the spiral blades 310 are connected to the drive shaft 309 inside the reactor 2.

[0046] With this configuration, the upper and lower ends of the drive shaft 309 inside the reactor 2 are fixedly connected to the upper and lower ends of the spiral blades 310 made of helical Hastelloy. Gears with different rotation speeds drive the drive shaft 309 to rotate, which in turn drives the spiral blades 310 to rotate inside the reactor 2, thereby achieving different speeds of stirring of materials in multiple reactors and improving the uniformity of mixing.

[0047] Example 3:

[0048] A feeding assembly 4 is provided based on embodiment 2.

[0049] Specifically, the feeding assembly 4 includes a hopper 401, which is installed inside the upper side of the placement box 1, and the lower end of the hopper 401 is connected to the upper end of the conveying pipe 402. The lower end of the hopper 401 passes through the interior of the placement box 1 and is connected to the upper surface of the reactor 2.

[0050] In this process, after the material is poured into the hopper 401, it is diverted to each reactor 2 through the conveying pipe 402, realizing the synchronous feeding of multiple reactors from a single feed point and improving the feeding efficiency.

[0051] Specifically, the upper surface of the hopper 401 is hinged to the opposite side of the sealing plate 403 on both sides, and the lower surface of the sealing plate 403 is connected to the upper surface of the sealing pad 404, which seals the interior of the hopper 401.

[0052] In this embodiment, the hopper 401 is opened and closed by flipping the closing plate 403. When closed, the sealing pad 404 adheres to the inner wall to form a seal, preventing the material from evaporating or impurities from entering after feeding, thus ensuring the purity of the material.

[0053] In actual use, firstly, the closing plate 403 in the feeding assembly 4 is pulled to rotate along the hinge, thereby opening the hopper 401. Then, the material is poured into the hopper 401, and then the material flows into the interior of the reactor 2 through the conveying pipe 402. After that, the closing plate 403 is closed, and the sealing pad 404 on the lower surface of the closing plate 403 contacts the inner wall of the hopper 401 to seal it. Then, the motor 301 is started, and the output shaft of the motor 301 drives the driving wheel 302 to rotate. Since the driving wheel 302 and the driven wheel 303 are connected by a belt 304, the driving wheel 302 drives the driven wheel 303 to rotate. At this time, the driven wheel 303 drives the reduction gear 305 and the speed-increasing gear 307 to rotate. The reduction gear 305 meshes with the first auxiliary gear 306, and the speed-increasing gear 307 meshes with the second auxiliary gear 308. Therefore, the rotation of the driven wheel 303 drives the second auxiliary gear 308. The first auxiliary gear 306 rotates, thereby driving the drive shaft 309, which is connected between the drive wheel 302, the first auxiliary gear 306, and the second auxiliary gear 308, to rotate. The rotation of the drive shaft 309 drives the spiral blades 310 inside the reactor 2 to stir. Because the size of the reduction gear 305, the first auxiliary gear 306, the speed-increasing gear 307, and the second auxiliary gear 308 are different, the stirring speed of different reactors 2 is different. After stirring is completed, the knob is rotated to drive the valve 5 to rotate, thereby opening the pipeline. Then the stirred material flows into the collection box 6 through the pipeline for collection. After collection, the collection box 6 can be pulled out from the inside of the placement box 1 for transfer. If the transmission components above the transmission mechanism 3 need to be repaired, the bolts on both sides of the cover plate 7 are removed, and the cover plate 7 is removed to expose the transmission mechanism 3 inside the placement box 1, and then the repair can be carried out.

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stirring structure for a cyclohexanone reaction vessel, characterized in that: The system includes a placement box (1), in which multiple reaction vessels (2) are mounted on a support column in the middle. A transmission mechanism (3) is installed inside the reaction vessel (2) for stirring cyclohexanone. The transmission mechanism (3) is installed above the placement box (1) and a cover plate (7) is bolted to one side of the upper surface of the placement box (1) for closing the transmission mechanism (3). Multiple collection boxes (6) are installed below the placement box (1) for collecting materials after stirring. A feeding assembly (4) is installed on the side of the placement box (1) away from the transmission mechanism (3) for feeding materials.

2. The stirring structure of the cyclohexanone reactor according to claim 1, characterized in that: The lower end of the reactor (2) and the upper surface of the collection box (6) are connected by a pipe, and one side of the pipe is connected to one end of the valve (5), and the other end of the valve (5) passes through the placement box (1) and is connected to a knob.

3. The stirring structure of the cyclohexanone reactor according to claim 2, characterized in that: The transmission mechanism (3) includes a motor (301), the output shaft of which is connected to the upper surface of the drive wheel (302), and driven wheels (303) are provided on both sides of the drive wheel (302). The drive wheel (302) and the driven wheels (303) are connected by a belt (304).

4. The stirring structure of the cyclohexanone reactor according to claim 3, characterized in that: The driven wheel (303) on the left side of the driving wheel (302) is connected to the speed-increasing gear (307) via a rotating shaft, and the speed-increasing gear (307) meshes with the second auxiliary gear (308). The driven wheel (303) on the right side of the driving wheel (302) is connected to the speed-reducing gear (305) via a rotating shaft, and the speed-reducing gear (305) meshes with the first auxiliary gear (306).

5. The stirring structure of the cyclohexanone reaction vessel according to claim 4, characterized in that: The upper end of the drive shaft (309) is connected between the drive wheel (302), the first auxiliary gear (306), and the second auxiliary gear (308). The lower end of the drive shaft (309) passes through the top plate of the reactor (2). The upper and lower ends of the helical blades (310) are connected to the drive shaft (309) inside the reactor (2).

6. The stirring structure of the cyclohexanone reaction vessel according to claim 5, characterized in that: The feeding assembly (4) includes a hopper (401), which is installed inside the upper side of the placement box (1). The lower end of the hopper (401) is connected to the upper end of the conveying pipe (402). The lower end of the hopper (401) passes through the interior of the placement box (1) and is connected to the upper surface of the reactor (2).

7. The stirring structure of the cyclohexanone reactor according to claim 6, characterized in that: The upper surface of the hopper (401) is hinged to the opposite side of the sealing plate (403), and the lower surface of the sealing plate (403) is connected to the upper surface of the sealing pad (404), which seals the interior of the hopper (401).

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