A baffle top-mounted reaction kettle

Abstract

The utility model relates to the technical field of reaction kettle, especially a baffle top-mounted reaction kettle. The baffle top-mounted reaction kettle comprises a cylinder, an upper head, a lower head, a stirrer and a baffle assembly. The baffle assembly comprises a baffle frame and a shear plate. The baffle frame is composed of a connecting arm and a fixed rod. One end of the connecting arm is fixed to the upper head, and the other end is connected to the fixed rod. The fixed rod is vertically located between the stirring shaft and the inner wall of the cylinder. The shear plate is arranged on the side of the fixed rod close to the stirring shaft, and the length direction is perpendicular to the fixed rod. In addition, the baffle assembly can also comprise a mixing plate and a disturbance plate, which are arranged on the side of the horizontal rod and the fixed rod respectively. The mixing effect is optimized through specific angle design. The utility model improves the mixing uniformity through the layout of the top-mounted baffle assembly, effectively avoids the cleaning dead angle, can well adapt to the reaction requirements of high-viscosity materials, and takes into account the mixing uniformity of high-viscosity materials and the cleaning convenience of the reaction kettle.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, and in particular to a baffle-topped reaction vessel. Background Technology

[0002] In many industrial fields such as chemical engineering and materials synthesis, reaction vessels are the core equipment for material mixing and reaction. Their operational performance directly affects product quality stability, production efficiency, and overall cost control. During many reactions, materials often exhibit high viscosity. As the reaction proceeds, the material composition changes, intermolecular forces increase, and viscosity continues to rise, easily leading to buildup on the inner wall of the reaction vessel. This phenomenon not only reduces the effective utilization rate of materials and decreases reaction efficiency, but may also cause overheating or degradation due to localized material retention, affecting the uniformity of product properties. In severe cases, it can even lead to equipment and pipeline blockage, significantly increasing the frequency of shutdowns for cleaning and maintenance costs.

[0003] To enhance mass and heat transfer within the reactor, traditional designs commonly employ a structure with baffles fixed to the inner wall of the vessel. These baffles break the circumferential flow inertia of the material, inducing a composite radial and axial flow field, thereby improving mixing uniformity. However, this type of fixed-wall baffle has insurmountable drawbacks: because the baffle is rigidly connected to the inner wall of the vessel, the right-angle or acute-angle area formed at the connection becomes a cleaning dead zone, where high-viscosity materials easily adhere and accumulate. After long-term operation, cleaning requires disassembly of the equipment or personnel entering the vessel, which is not only time-consuming and labor-intensive but also poses safety risks such as working at heights and in confined spaces, severely restricting production continuity.

[0004] With the increasing demands for equipment operating efficiency, operational safety, and environmental protection in industrial production, the contradiction between existing reactor baffle designs in solving the problem of high-viscosity materials sticking to the walls, improving cleaning convenience, and ensuring equipment sealing performance has become increasingly prominent. Therefore, there is an urgent need for a new reactor structural design that can balance mixing effect and cleaning convenience. Utility Model Content

[0005] To address the technical problem of how to obtain a novel reactor that balances mixing effectiveness and ease of cleaning, this utility model provides a baffle-topped reactor, comprising a cylinder, an upper head, a lower head, a stirrer, and a baffle assembly.

[0006] The cylinder is welded integrally with the lower end cap and connected to the upper end cap via a flange;

[0007] The agitator includes a motor, a stirring shaft, and a stirring paddle;

[0008] The motor is located at the top center of the outer side of the upper end cap, the stirring shaft passes through the upper end cap and extends into the inside of the cylinder, and the stirring paddle is fixed to the lower end of the stirring shaft;

[0009] The baffle assembly includes a baffle frame and a shearing plate;

[0010] The baffle frame includes a connecting arm and a fixing rod;

[0011] One end of the connecting arm is fixedly connected to the upper end cap, and the other end is connected to the top of the fixing rod. The fixing rod is vertically located between the stirring shaft and the inner wall of the cylinder.

[0012] The shearing plate is located on the side of the fixed rod near the stirring shaft, and the length direction of the shearing plate is perpendicular to the fixed rod.

[0013] In one embodiment, the lower edge of the connecting arm is not lower than the lower edge of the lower end cap; the length of the fixing rod is 95% to 110% of the height of the cylinder; and the length of the shearing plate is 25% to 30% of the nominal diameter of the cylinder.

[0014] In one embodiment, the connecting arm, the fixing rod, and the shearing plate are all metal plates; the shearing plate is welded to the fixing rod as a whole, and the angle α between the shearing plate and the horizontal plane is 30° to 60°.

[0015] In one embodiment, there are at least two connecting arms and fixing rods, which are centrally symmetrically distributed around the stirring shaft; each of the fixing rods is provided with at least two shearing plates.

[0016] Furthermore, the baffle frame also includes a crossbar, the two ends of which are respectively connected to the bottom end of the fixed rod; a mixing plate is provided on the crossbar, the length direction of the mixing plate is parallel to the crossbar, and the included angle β between the mixing plate and the crossbar is 45° ~ 75°; the length of the mixing plate is 30% ~ 40% of the nominal diameter of the cylinder.

[0017] Furthermore, the lower edge of the shear plate or the lower edge of the mixing plate is flush with the weld seam of the cylinder and the lower end cap.

[0018] In one embodiment, the baffle assembly further includes a disturbance plate disposed on the side of the fixed rod; the length direction of the disturbance plate is parallel to the fixed rod, and the included angle γ between the disturbance plate and the fixed rod is 30° to 45°; the length of the disturbance plate is 10% to 25% of the height of the cylinder.

[0019] Furthermore, the mixing plate and the disturbance plate are rubber baffles, which are connected to the baffle frame via damping hinges.

[0020] In one embodiment, the connecting arm is a two-section flat plate structure, including a horizontal section and an inclined section, and the length of the horizontal section is 5% to 10% of the nominal diameter of the cylinder; wherein, the horizontal section is connected to the fixed rod, and the inclined section is connected to the upper end cap; the included angle θ between the horizontal section and the inclined section is 120° to 150°.

[0021] In one embodiment, the stirrer is a toothed disc stirrer or a propeller stirrer.

[0022] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0023] The baffle-top reactor provided by this utility model achieves optimized mixing, easy cleaning, and effective reduction of wall adhesion through the ingenious layout of the baffle assembly. It can well adapt to the flow characteristics of high-viscosity materials and ensure the uniformity of product performance.

[0024] Specifically, the baffle assembly includes a combination design of shearing plates, mixing plates, and disturbance plates, as well as a specific included angle design, which breaks the single flow pattern of materials and induces the formation of a complex radial and axial composite flow field. This allows the materials to be fully mixed in the reactor, reduces the formation of material eddies, further improves mass and heat transfer efficiency, and ensures the stability of product quality.

[0025] In terms of equipment maintenance and cleaning, the baffle assembly adopts a top-mounted design, which avoids direct contact with the inner wall of the cylinder, thereby eliminating the cleaning dead corners in the traditional design. This effectively alleviates the problem of material accumulation after long-term operation of the reactor, making cleaning work simpler and faster, reducing production interruption time caused by equipment maintenance, and significantly improving the continuity and efficiency of production.

[0026] Furthermore, the flexible baffle assembly design allows the reactor to be adjusted according to different reaction requirements and material characteristics, making the baffle-top reactor provided by this utility model widely applicable. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the 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 based on these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of the baffle-topped reactor provided in Embodiment 1 of this utility model;

[0029] Figure 2This is a schematic diagram of the baffle assembly structure provided in Embodiment 1 of this utility model;

[0030] Figure 3 A cross-sectional view of the baffle assembly AA provided in Embodiment 1 of this utility model;

[0031] Figure 4 This is a cross-sectional view of the baffle-topped reactor provided in Embodiment 2 of this utility model;

[0032] Figure 5 This is a schematic diagram of the baffle assembly structure provided in Embodiment 2 of this utility model;

[0033] Figure 6 This is an enlarged view of section I of the schematic diagram of the baffle assembly structure provided in Embodiment 2 of this utility model;

[0034] Figure 7 This is a cross-sectional view of the baffle assembly BB provided in Embodiment 2 of this utility model.

[0035] Figure label:

[0036] 110-Cylinder; 120-Upper head; 130-Lower head; 200-Agitator; 210-Motor; 220-Agitator shaft; 230-Agitator paddle; 300-Baffle assembly; 310-Baffle frame; 311-Connecting arm; 311a-Horizontal part; 311b-Inclined part; 312-Fixing rod; 313-Crossbar; 320-Shearing plate; 330-Mixing plate; 340-Disturbance plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "center", "one end", "both ends", "bottom end", "one side", "lower edge", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0039] Example 1

[0040] This embodiment provides a baffle-topped reactor, see reference. Figure 1 As shown, it includes a cylinder 110, an upper end cap 120, a lower end cap 130, a stirrer 200, and a baffle assembly 300;

[0041] The cylinder 110 is welded to the lower end cap 130 and connected to the upper end cap 120 via a flange.

[0042] The stirrer 200 includes a motor 210, a stirring shaft 220, and a stirring paddle 230;

[0043] The motor 210 is located at the top center of the outer side of the upper end cap 120, the stirring shaft 220 passes through the upper end cap 120 and extends into the interior of the cylinder 110, and the stirring paddle 230 is fixed to the lower end of the stirring shaft 220.

[0044] The baffle assembly 300 includes a baffle frame 310 and a shearing plate 320;

[0045] See Figure 2 As shown, the baffle frame 310 includes a connecting arm 311 and a fixing rod 312;

[0046] One end of the connecting arm 311 is fixedly connected to the upper end cap 120, and the other end is connected to the top end of the fixing rod 312. The fixing rod 312 is vertically located between the stirring shaft 220 and the inner wall of the cylinder 110.

[0047] The shearing plate 320 is disposed on the side of the fixed rod 312 near the stirring shaft 220, and the length direction of the shearing plate 320 is perpendicular to the fixed rod 312.

[0048] In this embodiment, the lower edge of the connecting arm 311 is flush with the lower edge of the upper end cap 120;

[0049] The length of the fixing rod 312 is 100% of the height of the cylinder 110, and the length of the shearing plate 320 is 25% of the nominal diameter of the cylinder 110.

[0050] In this embodiment, the connecting arm 311, the fixing rod 312, and the shearing plate 320 are all metal plates; the shearing plate 320 is welded integrally with the fixing rod 312, see reference. Figure 3 As shown, the angle α between the shear plate 320 and the horizontal plane is 45°.

[0051] In this embodiment, preferably, there are two connecting arms 311 and two fixing rods 312, which are centrally symmetrically distributed with the stirring shaft as the center;

[0052] Each of the fixed rods 312 is provided with two shearing plates 320, which are located on the upper side of the stirring paddle 230. In actual operation, the shearing plates 320 can cut the material laterally, reducing the formation of eddies in the reactor.

[0053] In this embodiment, the baffle frame 310 further includes a crossbar 313, the two ends of which are respectively connected to the bottom end of the fixed rod 312; a mixing plate 330 is provided on the crossbar 313, the length direction of the mixing plate 330 being parallel to the crossbar 313, see reference. Figure 3 As shown, the included angle β between the crossbar 313 and the crossbar is 45°; the length of the mixing plate 330 is 35% of the nominal diameter of the cylinder 110, and its lower edge is flush with the weld of the cylinder 110 and the lower end cap 130.

[0054] In actual operation, when the stirring paddle agitates and guides the material, the flush weld design can cut off the material at the bottom of the vessel, optimize the distribution of shear force, and at the same time, prevent the bubbles generated by stirring from carrying too much material, thereby improving the stirring effect.

[0055] Example 2

[0056] This embodiment provides a baffle-topped reactor, see reference. Figure 4 As shown, it includes a cylinder 110, an upper end cap 120, a lower end cap 130, a stirrer 200, and a baffle assembly 300;

[0057] The cylinder 110 is welded to the lower end cap 130 and connected to the upper end cap 120 via a flange.

[0058] The agitator 200 is a propeller-type agitator, including a motor 210, a stirring shaft 220, and a stirring paddle 230;

[0059] The motor 210 is located at the top center of the outer side of the upper end cap 120, the stirring shaft 220 passes through the upper end cap 120 and extends into the interior of the cylinder 110, and the stirring paddle 230 is fixed to the lower end of the stirring shaft 220.

[0060] See Figure 5 As shown, the baffle assembly 300 includes a baffle frame 310, a shearing plate 320, and a disturbance plate 340;

[0061] The baffle frame 310 includes a connecting arm 311 and a fixing rod 312, wherein the connecting arm 311 is a two-section flat plate structure, see reference. Figure 6 As shown, it includes a horizontal portion 311a and an inclined portion 311b;

[0062] Specifically, the length of the horizontal part 311a is 5% of the nominal diameter of the cylinder 110, and its lower edge is flush with the lower edge of the upper end cap 120;

[0063] The horizontal part 311a is connected to the fixed rod 312, the inclined part 311b is connected to the upper end cap 120, and the included angle θ between the horizontal part 311a and the inclined part 311b is 150°.

[0064] The length of the fixing rod 312 is 100% of the height of the cylinder 110, and it is vertically located between the stirring shaft 220 and the inner wall of the cylinder 110.

[0065] The shearing plate 320 has a length of 25% of the nominal diameter of the cylinder 110, and is located on the side of the fixing rod 312 near the stirring shaft 220, with the length direction of the shearing plate 320 perpendicular to the fixing rod 312.

[0066] In this embodiment, preferably, there are two connecting arms 311 and two fixing rods 312, which are centrally symmetrically distributed with the stirring shaft as the center; each of the fixing rods 312 is provided with three shearing plates 320, with an angle α of 45° with the horizontal plane, of which two are provided on the upper side of the stirring paddle 230 and one is provided on the lower side of the stirring paddle 230, and its lower edge is flush with the weld of the cylinder 110 and the lower end cap 130.

[0067] In this embodiment, preferably, the baffle assembly 300 further includes a disturbance plate 340 disposed on the side of the fixing rod 312; the length direction of the disturbance plate 340 is parallel to the fixing rod 312, see reference. Figure 4 As shown, see reference Figure 7 As shown, the included angle γ between the disturbance plate 340 and the fixed rod 312 is 30°; the length of the disturbance plate 340 is 18% of the height of the cylinder 110.

[0068] More preferably, the disturbance plate 340 is a rubber baffle, which is connected to the baffle frame 310 through a damping hinge. During assembly, the disturbance plate 340 can be adjusted to any angle and fixed in place.

[0069] Although this document frequently uses terms such as cylinder, upper head, lower head, stirrer, baffle assembly, motor, stirring shaft, stirring paddle, baffle frame, shearing plate, connecting arm, fixing rod, crossbar, mixing plate, disturbance plate, damping hinge, horizontal part, inclined part, toothed disc stirrer, and propeller stirrer, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A baffle-topped reaction vessel, characterized in that: Includes a cylinder (110), an upper end cap (120), a lower end cap (130), a stirrer (200), and a baffle assembly (300). The cylinder (110) is welded to the lower end cap (130) and connected to the upper end cap (120) via a flange; The stirrer (200) includes a motor (210), a stirring shaft (220), and a stirring paddle (230). The motor (210) is located at the top center of the outer side of the upper end cap (120), the stirring shaft (220) passes through the upper end cap (120) and extends into the interior of the cylinder (110), and the stirring paddle (230) is fixed to the lower end of the stirring shaft (220); The baffle assembly (300) includes a baffle frame (310) and a shearing plate (320). The baffle frame (310) includes a connecting arm (311) and a fixing rod (312). One end of the connecting arm (311) is fixedly connected to the upper end cap (120), and the other end is connected to the top end of the fixing rod (312). The fixing rod (312) is vertically located between the stirring shaft (220) and the inner wall of the cylinder (110). The shearing plate (320) is located on the side of the fixed rod (312) near the stirring shaft (220), and the length direction of the shearing plate (320) is perpendicular to the fixed rod (312).

2. The baffle-topped reactor according to claim 1, characterized in that: The lower edge of the connecting arm (311) is not lower than the lower edge of the upper end cap (120); The length of the fixing rod (312) is 95% to 110% of the height of the cylinder (110), and the length of the shearing plate (320) is 25% to 30% of the nominal diameter of the cylinder (110).

3. The baffle-topped reactor according to claim 1, characterized in that: The connecting arm (311), the fixing rod (312), and the shearing plate (320) are all metal plates; The shear plate (320) is welded to the fixing rod (312) as a whole, and the angle α between the shear plate (320) and the horizontal plane is 30° ~ 60°.

4. The baffle-topped reactor according to claim 1, characterized in that: There are at least two connecting arms (311) and fixing rods (312), which are centrally symmetrically distributed with the stirring shaft as the center; At least two shear plates (320) are provided on any of the fixed rods (312).

5. The baffle-topped reactor according to claim 4, characterized in that: The baffle frame (310) also includes a crossbar (313), the two ends of which are connected to the bottom end of the fixed rod (312); The crossbar (313) is provided with a mixing plate (330), the length direction of the mixing plate (330) is parallel to the crossbar (313), and the included angle β between the mixing plate (330) and the crossbar (313) is 45° ~ 75°; The length of the mixing plate (330) is 30% to 40% of the nominal diameter of the cylinder (110).

6. The baffle-topped reactor according to claim 5, characterized in that: The lower edge of the shear plate (320) or the lower edge of the mixing plate (330) is flush with the weld of the cylinder (110) and the lower end cap (130).

7. The baffle-topped reactor according to claim 6, characterized in that: The baffle assembly (300) also includes a disturbance plate (340) disposed on the side of the fixing rod (312); The disturbance plate (340) is parallel to the fixed rod (312) in the length direction, and the included angle γ between the disturbance plate (340) and the fixed rod (312) is 30° ~ 45°. The length of the disturbance plate (340) is 10% to 25% of the height of the cylinder (110).

8. The baffle-topped reactor according to claim 7, characterized in that: The mixing plate (330) and the disturbance plate (340) are rubber baffles, which are connected to the baffle frame (310) by a damping hinge.

9. The baffle-topped reactor according to any one of claims 1, 5, and 7, characterized in that: The connecting arm (311) is a two-section flat plate structure, including a horizontal part (311a) and an inclined part (311b), and the length of the horizontal part (311a) is 5% to 10% of the nominal diameter of the cylinder (110); The horizontal part (311a) is connected to the fixed rod (312), and the inclined part (311b) is connected to the upper end cap (120). The included angle θ between the horizontal part (311a) and the inclined part (311b) is 120° ~ 150°.

10. The baffle-topped reactor according to claim 1, characterized in that: The agitator (200) is a toothed disc agitator or a propeller agitator.

Images