Reaction kettle

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a reaction kettle which comprises a kettle body, a kettle cover, a packing sealing piece and a power mechanism, the kettle cover covers and seals the kettle body; a stirring blade is rotatably mounted on the kettle cover in a penetrating manner and is arranged in the kettle body; a packing sealing element is installed on the kettle cover, a rotating shaft, penetrating out of one end of the kettle cover, of the stirring blade penetrates through the packing sealing element and is connected with a coupler, and a limiting structure used for limiting axial movement of the rotating shaft is arranged between the packing sealing element and the coupler; and the power mechanism is arranged on the kettle cover and is connected with the input end of the coupler. The reaction kettle can effectively prevent the rotating shaft from moving, and the sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical technology, specifically to a reaction vessel. Background Technology

[0002] In chemical reactors, packing seals are often used to seal rotating shafts. A packing seal is a dynamic sealing device that uses pre-tightening or self-tightening by the medium pressure to create a clamping force between the packing and rotating or stationary parts.

[0003] For example, patent CN105134955A, "Stuffing Seal Device for Reactors with Sealing Cavity," improves the cooling and lubrication effect of the stuffing seal device and prevents leakage of the medium inside the reactor. However, while this structural design reduces wear, it cannot prevent the rotating shaft from moving axially. Axial movement of the rotating shaft can easily lead to increased wear of the stuffing seal device and introduce external dust into the stuffing seal device, further aggravating the wear of the packing and thus affecting the sealing effect of the entire reactor. Utility Model Content

[0004] In order to overcome one of the shortcomings of the prior art, the purpose of this utility model is to provide a reaction vessel that can effectively prevent the rotation of the rotating shaft and improve the sealing effect.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A reaction vessel includes a vessel body, a vessel cover, a packing seal, and a power mechanism. The vessel cover is sealed onto the vessel body. A stirring blade is rotatably mounted through the vessel cover and is placed inside the vessel body. The packing seal is mounted on the vessel cover, and a rotating shaft of the stirring blade, extending from one end of the vessel cover, passes through the packing seal and is connected to a coupling. A limiting structure for restricting axial movement of the rotating shaft is provided between the packing seal and the coupling. The power mechanism is mounted on the vessel cover and is connected to the input end of the coupling.

[0007] Furthermore, the packing seal includes a mounting ring seat, a plurality of packing rings, and a clamping flange. One end of the mounting ring seat is sealed and installed on the vessel cover. The inner ring of the mounting ring seat has a flared portion at the end away from the vessel cover. All the packing rings are coaxially stacked in the flared portion. The rotating shaft moves through the mounting ring seat and all the packing rings. One end of the clamping flange is movably inserted into the flared portion and abuts against the topmost packing ring. The clamping flange is connected and locked to the mounting ring seat by bolts. The limiting structure is installed on the clamping flange.

[0008] Furthermore, the bottom of the flared portion is provided with a bevel, and the bevel is inclined toward the axis of the mounting ring seat.

[0009] Furthermore, the end face of the clamping flange that mates with the packing ring is provided with a flared opening, and the flared opening abuts against the topmost packing ring.

[0010] Furthermore, the vessel lid is provided with an installation port, which extends outward to form a neck ring. The end of the neck ring bends outward to form an installation flange. The installation ring seat is installed on the installation flange, and a sealing ring is provided between the installation ring seat and the installation flange.

[0011] Furthermore, a locking ring sleeve is fitted onto the neck ring portion, and the mounting ring seat is connected to the locking ring sleeve by bolts to lock onto the mounting flange.

[0012] Furthermore, a cylindrical portion extends from the end of the clamping flange away from the mounting ring seat, and a tapered opening is provided on the inner ring of the outer end of the cylindrical portion. The rotating shaft of the stirring blade is movably inserted into the cylindrical portion, and the rotating shaft of the stirring blade is provided with a tapered portion that mates with the tapered opening. The limiting structure is installed on the cylindrical portion.

[0013] Furthermore, a sealing groove is provided on the root region of the conical opening of the cylindrical part, and a sealing element is provided in the sealing groove.

[0014] Furthermore, the limiting structure includes a pressure ring and an anti-loosening nut. An annular groove is provided on one end of the rotating shaft that extends out of the cylindrical part. The pressure ring is provided in the annular groove. The anti-loosening nut is screwed onto the outside of the cylindrical part. The anti-loosening nut can press the rotating shaft of the stirring blade onto the conical opening through the pressure ring.

[0015] Furthermore, the power mechanism includes a mounting bracket and a motor mounted on the mounting bracket, the mounting bracket being mounted on the vessel lid.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention relates to a reaction vessel that incorporates a limiting structure at the end of the packing seal furthest from the vessel lid. This limiting structure confines the rotating shaft to the packing seal, effectively preventing axial movement of the shaft. Furthermore, the limiting structure is installed on the outward-facing end of the packing seal, providing a secondary seal and reducing the risk of external dust entering the packing seal, thus mitigating wear. Additionally, a coupling connects the rotating shaft and the power mechanism, reducing the impact of shaft vibration on the power mechanism and improving operational stability.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a top view of an embodiment of the present utility model;

[0020] Figure 2 This is a partial cross-sectional view of an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the packing seal in an embodiment of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting structure and the packing seal in an embodiment of this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] Reference Figures 1 to 4 The reactor shown includes a vessel body 10, a vessel cover 20, a packing seal 30, and a power mechanism 60. The vessel cover 20 seals the vessel body 10. A stirring blade 21 is rotatably mounted through the vessel cover 20, and the stirring blade 21 is placed inside the vessel body 10. The packing seal 30 is mounted on the vessel cover 20. A rotating shaft 22 of the stirring blade 21, which extends out of one end of the vessel cover 20, passes through the packing seal 30 and is connected to a coupling 40. A limiting structure 50 is provided between the packing seal 30 and the coupling 40 to restrict the axial movement of the rotating shaft 22. The power mechanism 60 is mounted on the vessel cover 20 and is connected to the input end of the coupling 40.

[0025] The reactor body 10 and the reactor lid 20 together constitute the main body of the reactor. In this application, a heat insulation cover 11 is provided on the outside of the reactor body 10, and a cooling chamber 12 is formed between the heat insulation cover 11 and the reactor body 10. Connecting pipes 13 are provided on opposite sides of the heat insulation cover 11, with the two connecting pipes 13 corresponding to the water inlet and the water outlet, respectively. In addition, a discharge pipe 15 is provided at the bottom of the reactor body 10, and a discharge valve 14 is provided on the discharge pipe 15.

[0026] Furthermore, in the above embodiments, the vessel lid 20 is provided with a plurality of discharge ports 29, wherein the discharge ports 29 are sealed with caps. To facilitate temperature detection within the vessel body 10, in one embodiment of this application, one of the discharge ports 29 can be used as a mounting structure for a thermometer sleeve. In some embodiments, the caps on the discharge ports 29 can also be designed to be transparent; this design is primarily for ease of observation of the reaction within the reactor.

[0027] It should be noted that the packing seal 30 in this application can employ conventional techniques, or it can adopt the technical solution from patent CN110939779A - A Valve Packing Seal Device, which will not be detailed here. Furthermore, for ease of transmission, the power mechanism 60 includes a mounting bracket 61 and a motor 62 mounted on the mounting bracket 61. The mounting bracket 61 is mounted on the vessel cover 20. The vessel cover 20 has a mounting ring platform, and the mounting bracket 61 is fixed to the mounting ring platform by bolts.

[0028] This reactor incorporates a limiting structure 50 at the end of the packing seal 30 furthest from the reactor lid 20. This limiting structure 50 confines the rotating shaft 22 to the packing seal 30, effectively preventing axial movement of the rotating shaft 22. The limiting structure 50 also seals the outward-facing end of the packing seal 30, providing a secondary seal and reducing the risk of external dust entering the packing seal 30, thus mitigating wear. Furthermore, the coupling 40 connects the rotating shaft 22 and the power mechanism 60, reducing the impact of the rotating shaft 22's vibration on the power mechanism 60 and improving operational stability.

[0029] See further Figures 1 to 4To facilitate efficient sealing, in one embodiment of this application, the packing seal 30 includes a mounting ring seat 31, a plurality of packing rings 32, and a clamping flange 33. One end of the mounting ring seat 31 is sealed and installed on the vessel cover 20. A flared portion 34 is provided on the inner ring of the mounting ring seat 31 away from the vessel cover 20. All the packing rings 32 are coaxially stacked in the flared portion 34. The rotating shaft 22 movably passes through the mounting ring seat 31 and all the packing rings 32. One end of the clamping flange 33 is movably inserted into the flared portion 34 and abuts against the topmost packing ring 32. The clamping flange 33 is connected and locked to the mounting ring seat 31 by bolts. The limiting structure 50 is installed on the clamping flange 33. The flared portion 34 is actually a ring-shaped structure, the main purpose of which is to facilitate the accommodation of the packing rings 32. In this embodiment, the clamping flange 33 is connected to the mounting ring seat 31 by bolts. By adjusting the tightness of the bolts, the pressure and deformation of the packing ring 32 can be adjusted, thereby ensuring the contact pressure and sealing degree between the packing ring 32 and the outer wall of the rotating shaft 22.

[0030] Furthermore, in an improved embodiment, to ensure that the packing ring 32 can better abut against the outer wall of the rotating shaft 22 when the clamping flange 33 applies force, the bottom of the flared portion 34 is provided with a bevel 35, the bevel 35 being inclined towards the axis of the mounting ring seat 31. More specifically, the bottom of the flared portion 34 is connected to the inner ring of the mounting ring seat 31 via a tapered ring. This design can effectively improve the direction of deformation of the packing ring 32 under stress, ensuring the tightness of the contact between the packing ring 32 and the outer wall of the rotating shaft 22. Simultaneously, after the inner ring of the packing ring 32 is worn later, this design can also utilize the force of the bevel 35 to deform the packing ring 32 towards its axis, ensuring the overall tightness of the connection.

[0031] Similarly, in an improved embodiment of this application, the end face of the clamping flange 33 that mates with the packing ring 32 is provided with a flared opening 36, which abuts against the topmost packing ring 32. In fact, the flared opening 36 and the bevel 35 serve the same function, which will not be described in detail here.

[0032] See further Figure 2In one embodiment of this application, to improve the tightness of the connection between the mounting ring seat 31 and the vessel cover 20, the vessel cover 20 is provided with a mounting opening 23. The mounting opening 23 extends outward to form a neck ring portion 24, and the end of the neck ring portion 24 bends outward to form a mounting flange 25. The mounting ring seat 31 is mounted on the mounting flange 25, and a sealing ring 26 is provided between the mounting ring seat 31 and the mounting flange 25. The mounting ring seat 31 can be fixed to the mounting flange 25 with bolts. Furthermore, a rotating shaft 22 movably passes through the mounting opening 23, wherein the inner diameter of the mounting opening 23 is larger than the outer diameter of the rotating shaft 22 to prevent contact between the two.

[0033] In the above-described improved design, to facilitate the secure fixing of the mounting ring seat 31 to the mounting flange 25 while ensuring the strength of the mounting flange 25, a locking ring sleeve 27 is fitted onto the neck ring portion 24. The mounting ring seat 31 is connected to the locking ring sleeve 27 by bolts to lock it onto the mounting flange 25. This design allows for adjustment of the tightness of the connection between the mounting ring seat 31 and the mounting flange 25 using bolts. The locking ring sleeve 27 consists of two half-rings, which can also be fixedly connected by bolts.

[0034] See Figure 4 To improve the fit between the rotating shaft 22 and the clamping flange 33, and also to limit the axial movement of the rotating shaft 22 to a certain extent, in one embodiment of this application, a cylindrical portion 37 extends from the end of the clamping flange 33 away from the mounting ring seat 31. A tapered opening is provided on the inner ring of the outermost end of the cylindrical portion 37. The rotating shaft 22 of the stirring blade 21 is movably inserted into the cylindrical portion 37, and the rotating shaft 22 of the stirring blade 21 is provided with a tapered portion that mates with the tapered opening. The limiting structure 50 is installed on the cylindrical portion 37. The design of the limiting structure 50 and the tapered opening can limit the axial movement of the rotating shaft 22 to a certain extent, and the limiting structure 50 also serves to seal the port of the cylindrical portion 37.

[0035] Furthermore, in order to improve the sealing performance, in an improved embodiment of this application, a sealing groove 38 is provided on the root region of the conical opening of the cylindrical portion 37, and a sealing element is provided in the sealing groove 38.

[0036] See Figure 4In one embodiment of this application, the limiting structure 50 includes a pressure ring 51 and a locking nut 52. An annular groove 28 is provided on one end of the rotating shaft 22 that extends out of the cylindrical portion 37. The pressure ring 51 is disposed within the annular groove 28. The locking nut 52 is screwed onto the cylindrical portion 37. The locking nut 52 can press the rotating shaft 22 of the stirring blade 21 against the conical opening through the pressure ring 51. The pressure ring 51 consists of two semi-rings that engage and lock into the annular groove 28. In fact, the annular groove 28 is located at the root of the larger end of the conical portion.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A reaction vessel, characterized in that, include The vessel body; A lid is sealed onto the vessel body; a stirring blade is rotatably mounted through the lid and placed inside the vessel body. A packing seal is installed on the vessel cover. The rotating shaft of the stirring blade, which protrudes from one end of the vessel cover, passes through the packing seal and is connected to the coupling. A limiting structure is provided between the packing seal and the coupling to restrict the axial movement of the rotating shaft. A power mechanism is mounted on the vessel lid and is connected to the input end of the coupling.

2. The reaction vessel according to claim 1, characterized in that: The packing seal includes a mounting ring seat, several packing rings, and a clamping flange. One end of the mounting ring seat is sealed and installed on the vessel cover. The inner ring of the mounting ring seat has a flared portion at the end away from the vessel cover. All the packing rings are coaxially stacked in the flared portion. The rotating shaft moves through the mounting ring seat and all the packing rings. One end of the clamping flange is movably inserted into the flared portion and abuts against the topmost packing ring. The clamping flange is connected and locked to the mounting ring seat by bolts. The limiting structure is installed on the clamping flange.

3. A reaction vessel according to claim 2, characterized in that: The bottom of the flared part is provided with a bevel, and the bevel is inclined towards the axis of the mounting ring seat.

4. A reaction vessel according to claim 2, characterized in that: The end face of the clamping flange that mates with the packing ring is provided with a flared opening, which abuts against the topmost packing ring.

5. A reaction vessel according to claim 2, characterized in that: The vessel lid is provided with an installation port, which extends outward to form a neck ring. The end of the neck ring bends outward to form an installation flange. The installation ring seat is installed on the installation flange, and a sealing ring is provided between the installation ring seat and the installation flange.

6. A reaction vessel according to claim 5, characterized in that: A locking ring sleeve is fitted onto the neck ring portion, and the mounting ring seat is connected to the locking ring sleeve by bolts to lock onto the mounting flange.

7. A reaction vessel according to claim 2, characterized in that: The clamping flange extends to form a cylindrical portion at one end away from the mounting ring seat. A tapered opening is provided on the inner ring of the outer end of the cylindrical portion. The rotating shaft of the stirring blade is movably inserted into the cylindrical portion. The rotating shaft of the stirring blade is provided with a tapered portion that mates with the tapered opening. The limiting structure is installed on the cylindrical portion.

8. A reaction vessel according to claim 7, characterized in that: A sealing groove is provided on the root region of the cylindrical part at the conical opening, and a sealing element is provided in the sealing groove.

9. A reaction vessel according to claim 7, characterized in that: The limiting structure includes a pressure ring and an anti-loosening nut. An annular groove is provided on one end of the rotating shaft that extends out of the cylindrical part. The pressure ring is provided in the annular groove. The anti-loosening nut is screwed onto the outside of the cylindrical part. The anti-loosening nut can press the rotating shaft of the stirring blade onto the conical opening through the pressure ring.

10. A reaction vessel according to claim 1, characterized in that: The power mechanism includes a mounting bracket and a motor mounted on the mounting bracket, which is mounted on the vessel lid.

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