Polygonal reaction kettle

Abstract

The invention discloses a polygonal reaction kettle, and belongs to the technical field of reaction kettles, the polygonal reaction kettle comprises a kettle body, the kettle body is provided with an inner cavity, the section of the inner cavity is of a regular polygon structure, the inner cavity is provided with a stirring device, the stirring device comprises a stirring rod and stirring blades, and the stirring rod is detachably provided with at least two stirring blades. According to the polygonal reaction kettle, materials in the kettle body are stirred through the stirring device, so that the materials are mixed more uniformly, the inner cavity of the kettle body is of a regular polygon structure, a break angle is formed between every two adjacent surfaces, and in the stirring process, the materials can be stirred more uniformly, so that the stirring effect is better. The moving track of materials changes every time when the materials impact the bevel edge, a better turbulent flow effect is achieved through multiple times of moving track changes, vortexes cannot be formed, material mixing is facilitated, meanwhile, a safety gap is formed between the end, away from the stirring rod, of the stirring blade and the inner wall of the kettle body, the inner wall of the kettle body is prevented from being scratched in the stirring process, and the stirring efficiency is improved. The service life of the kettle body is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of reaction kettles, and more specifically, relates to a polygonal reaction kettle. Background Art

[0002] Reaction kettles are widely used in fields such as petroleum, chemical industry, rubber, pesticides, dyes, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitrification, hydrogenation, alkylation, polymerization, and condensation, such as reactors, reaction pots, decomposition pots, polymerization kettles, etc.; the materials are generally carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys, and other composite materials.

[0003] The interior of the reaction kettle is basically a cylindrical structure. During the stirring process, the materials will rotate along the inner wall of the cylinder, thus forming eddy currents. However, the eddy currents are not conducive to material mixing. Therefore, several protruding baffles are welded on the inner wall of the cylindrical structure to form a combination of a cylindrical structure and a baffle. Although it can effectively avoid the formation of eddy currents, during the stirring process of the materials, stirring dead corners will be formed on the back of the baffle and material accumulation will occur. Summary of the Invention

[0004] The main purpose of the present invention is to provide a polygonal reaction kettle to solve the problems in the above background art.

[0005] According to the first aspect of the present invention, there is provided a polygonal reaction kettle, including a kettle body. The kettle body is provided with an inner cavity, and the cross-section of the inner cavity is a regular polygon structure. A stirring device is arranged in the inner cavity. The stirring device includes a stirring rod and stirring blades. At least two stirring blades are detachably installed on the stirring rod, and there is a safety gap between the end of the stirring blade far from the stirring rod and the inner wall of the kettle body.

[0006] In a specific embodiment of the present invention, the inner cavity is any one of a regular hexagon, a regular octagon, and a regular decagon.

[0007] In a specific embodiment of the present invention, a kettle cover is installed on the top of the kettle body. Both the kettle body and the kettle cover are regular polygon structures. A conical head with a regular polygon structure is connected to the bottom of the kettle body. The conical head and the kettle body are integrally provided, and a discharge port is opened at the bottom of the conical head.

[0008] In a specific embodiment of the present invention, the kettle cover includes a bottom cover and a top cover. One side of the bottom cover is fixedly connected to the top of the kettle body, and the other side of the bottom cover is fixedly connected to one side of the top cover.

[0009] In a specific embodiment of the present invention, a plurality of connection holes are opened on both the bottom cover and the top cover.

[0010] In a specific embodiment of the present invention, one end of the stirring rod close to the stirring paddle is arranged above the conical head.

[0011] In a specific embodiment of the present invention, the stirring paddle is arranged at the bottom of the stirring rod, and one end of the stirring rod close to the kettle cover extends outward from the kettle body and is connected to the motor.

[0012] In a specific embodiment of the present invention, the motor is fixedly installed at the middle position on the top of the kettle cover.

[0013] In a specific embodiment of the present invention, an outer kettle body with a cylindrical structure is connected to the outside of the kettle body.

[0014] In a specific embodiment of the present invention, the top of the outer kettle body is connected to the outer wall of the kettle body to form a sealed space.

[0015] One of the technical solutions in the above technical solutions of the present invention has at least the following advantages or beneficial effects:

[0016] This polygonal reaction kettle stirs the materials in the kettle body through the stirring device, making the materials mix more evenly. The inner cavity of the kettle body is a regular polygonal structure, and there is a fold angle between two adjacent faces. During the stirring process, the running trajectory of the materials will change every time they hit the folded edge. The multiple changes in the running trajectory have a better turbulence effect and will not form eddy currents, which is beneficial to the mixing of the materials. At the same time, there is a safety gap between the end of the stirring paddle far from the stirring rod and the inner wall of the kettle body, avoiding scraping against the inner wall of the kettle body during stirring and extending the service life of the kettle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments;

[0018] Figure 1 is a schematic structural diagram of a polygonal reaction kettle in the first embodiment of the present invention;

[0019] Figure 2 is a cross-sectional view of a polygonal reaction kettle in the first embodiment of the present invention;

[0020] Figure 3 is a schematic structural diagram of a polygonal reaction kettle in the second embodiment of the present invention;

[0021] Figure 4 is a cross-sectional view of a polygonal reaction kettle in the second embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that with respect to the orientation description, such as the up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0024] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the term "connection" should be understood in a broad sense. For example, it may be a fixed connection or a movable connection, or a detachable connection or an inseparable connection, or an integral connection; it may be a mechanical connection, or an electrical connection or a connection that can communicate with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements, indirect communication or the interaction relationship between two elements.

[0027] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0028] Referring to Figures 1 to 4 As shown, a polygonal reaction kettle includes a kettle body 1. The kettle body 1 is provided with an inner cavity, and the cross-section of the inner cavity is a regular polygon structure. A stirring device 4 is arranged in the inner cavity. The stirring device 4 includes a stirring rod 41 and stirring blades 42. At least two stirring blades 42 are detachably installed on the stirring rod 41. A safety gap is provided between the end of the stirring blade 42 away from the stirring rod 41 and the inner wall of the kettle body 1.

[0029] In this embodiment, the inner cavity has a regular polygon structure, which has a better flow disturbance effect compared to the cylindrical structure, making the mixing of materials in the reaction kettle more uniform. The stirring and mixing effect of adding multiple baffle structures inside a cylindrical reaction kettle is weaker than that of the regular polygon structure. Moreover, in the structure of a cylinder with multiple baffle plates, serious material accumulation will occur on the back of the baffle plates during the mixing process, resulting in stirring dead corners, which is not conducive to the reaction of materials. However, there are no stirring dead corners in the inner cavity of the reaction kettle with a regular polygon structure, and no material accumulation phenomenon will occur, which can greatly improve the uniformity of the morphology of the reaction-generated materials, thereby improving the overall performance of the materials, etc.

[0030] During the stirring process of the inner cavity with a cylindrical structure, the materials will rotate along the inner wall of the cylinder, thus forming eddy currents. However, eddy currents are not conducive to material mixing. During the stirring process of the inner cavity with a regular polygon structure, due to the presence of a fold angle between two adjacent faces, the running trajectory of the materials will change every time they hit the fold angle edge. The multiple changes in the running trajectory have a better flow disturbance effect and will not form eddy currents, which is conducive to material mixing. By welding several protruding baffles on the inner wall of the cylindrical structure to form a combination of a cylindrical structure and baffle plates, although eddy currents can be effectively avoided, during the stirring process of the materials, stirring dead corners will be formed on the back of the baffle plates and material accumulation will occur. However, there are no protruding parts on the inner wall of the regular polygon structure, so no stirring dead corners will be formed and no material accumulation will occur.

[0031] In one embodiment of the present invention, the inner cavity is any one of a regular hexagon, a regular octagon, and a regular decagon, or it can also be the inner cavity structure of other regular polygons. The polygon structure causes the materials to continuously hit the fold angle edges during the stirring process, resulting in changes in the running trajectory. Without installing baffle plates, it also has a better flow disturbance effect and will not form eddy currents, which is conducive to material mixing and reduces the cost of installing baffle plates.

[0032] In one embodiment of the present invention, a kettle cover 2 is installed on the top of the kettle body 1. Both the kettle body 1 and the kettle cover 2 have a regular polygon structure. A conical head 3 with a regular polygon structure is connected to the bottom of the kettle body 1. The conical head 3 and the kettle body 1 are integrally provided. An outlet 31 is opened at the bottom of the conical head 3. If the outside of the kettle body 1 has a regular hexagon structure, the outside of the conical head 3 also has a regular hexagon structure. The external structure of the conical head 3 corresponds to the external structure of the kettle body 1. Similarly, the inside of the conical head 3 also corresponds to the inner cavity of the kettle body 1, and the side length of the conical head 3 is equal to the side length of the kettle body 1.

[0033] Further, the kettle lid 2 includes a bottom lid 21 and a top lid 22. One side of the bottom lid 21 is fixedly connected to the top of the kettle body 1, and the other side of the bottom lid 21 is fixedly connected to one side of the top lid 22. A number of connection holes 23 are provided on both the bottom lid 21 and the top lid 22, facilitating the bolted fixed connection between the bottom lid 21 and the top lid 22. The bottom lid 21 is used to seal the top opening of the kettle body 1, and the top lid 22 is to reduce the vibration generated when the kettle body 1 is working. A motor 6 is provided on the side of the top lid 22 away from the bottom lid 21, which can effectively reduce the vibration of the motor 6 and also enhance the sealing effect.

[0034] Preferably, one end of the stirring rod 41 close to the stirring paddle 42 is arranged above the conical head 3, and the stirring paddle 42 is also arranged above the conical head 3 accordingly. If the stirring paddle 42 is arranged inside the cavity of the conical head 3, it may cause the stirring paddle 42 to hit the inner wall of the conical head 3. At this time, in order to prevent the stirring paddle 42 from hitting the inner wall of the conical head 3, the length of the stirring paddle 42 needs to be shortened, which may lead to insufficient stirring force and uneven mixing of the materials.

[0035] A number of stirring paddles 42 can also be installed at each position on the stirring rod 41 to adapt to different usage scenarios and avoid the stirring paddles 42 hitting the inner wall of the kettle body 1 during operation.

[0036] In one embodiment of the present invention, the stirring paddle 42 is arranged at the bottom of the stirring rod 41. One end of the stirring rod 41 close to the kettle lid 2 extends outside the kettle body 1 and is connected to the motor 6, and the motor 6 is fixedly installed at the middle position on the top of the kettle lid 2.

[0037] In the second embodiment of the present invention, an outer kettle body 5 with a cylindrical structure is connected to the outside of the kettle body 1. A through hole communicating with the discharge port 31 is provided at the bottom of the outer kettle body 5, and the outer diameter of the outer kettle body 5 is smaller than the outer diameter of the kettle lid 2.

[0038] Further, the top of the outer kettle body 5 is connected to the outer wall of the kettle body 1 to form a sealed space 51. The sealed space 51 is used for the circulation of heating or cooling medium. Two openings are provided on the outer kettle body 5. One is for adding materials into the sealed space 51, and the other is for discharging the materials in the sealed space 51. The bottom of the outer kettle body 5 is connected with a hemispherical head.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A polygonal reactor, comprising a reactor body (1), characterized in that: The kettle body (1) is provided with an inner cavity, the cross section of which is a regular polygonal structure, the inner cavity is provided with a stirring device (4), the stirring device (4) comprises a stirring rod (41) and stirring blades (42), at least two stirring blades (42) are detachably mounted on the stirring rod (41), and a safety gap is provided between an end of the stirring blade (42) away from the stirring rod (41) and an inner wall of the kettle body (1).

2. The polygonal reactor according to claim 1, characterized in that: The inner cavity is any one of a regular hexagon, a regular octagon and a regular decagon.

3. The polygonal reactor according to claim 1, characterized in that: A kettle cover (2) is installed on the top of the kettle body (1); the kettle body (1) and the kettle cover (2) are both regular polygonal structures; the bottom of the kettle body (1) is connected to a conical head (3) with a regular polygonal structure; the conical head (3) and the kettle body (1) are integrated; and a discharge port (31) is provided at the bottom of the conical head (3).

4. The polygonal reactor according to claim 3, characterized in that: The kettle cover (2) comprises a bottom cover (21) and a top cover (22), one side of the bottom cover (21) is fixedly connected to the top of the kettle body (1), and the other side of the bottom cover (21) is fixedly connected to one side of the top cover (22).

5. The polygonal reactor according to claim 4, characterized in that: The bottom cover (21) and the top cover (22) are both provided with a plurality of connection holes (23).

6. The polygonal reactor according to claim 3, characterized in that: One end of the stirring rod (41) close to the stirring blade (42) is arranged above the conical end cap (3).

7. The polygonal reactor according to claim 1, characterized in that: The stirring blade (42) is arranged at the bottom of the stirring rod (41); one end of the stirring rod (41) close to the kettle cover (2) extends to the outside of the kettle body (1) and is connected to the motor (6).

8. The polygonal reactor according to claim 7, characterized in that: The motor (6) is fixedly mounted at the middle position of the top of the kettle cover (2).

9. The polygonal reactor according to claim 1, characterized in that: The outer side of the kettle body (1) is connected to an outer kettle body (5) with a cylindrical structure.

10. The polygonal reactor according to claim 9, characterized in that: The top of the outer kettle body (5) is connected to the outer wall of the kettle body (1) to form a sealed space (51).

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