CN211725763U

CN211725763U - Final polycondensation reaction kettle

Info

Publication number: CN211725763U
Application number: CN201922402424.1U
Authority: CN
Inventors: 甘胜华; 丁杨惠勤; 刘建华; 李红彬
Original assignee: Shanghai Juyou Chemical Engineering Co ltd
Current assignee: Shanghai Juyou Chemical Engineering Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-23
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a final polycondensation reaction kettle adopts the horizontal structure setting, include: the device comprises a cylinder body, a gas phase pipe and a gas phase pipe, wherein the cylinder body is horizontally arranged and is provided with a first end and a second end which are opposite, a discharge hole and the gas phase pipe are arranged at the position of the cylinder body close to the first end, and a feed hole is arranged at the position of the cylinder body close to the second end; the main transmission end is arranged at the first end of the cylinder body, is connected with the transmission device and is driven by the transmission device to operate; the cage frame type stirrer is arranged inside the barrel and adopts a braided mesh structure; the driven end is arranged at the second end of the barrel and is connected with the cage frame type stirrer, the cage frame type stirrer is driven by the main driving end to rotate, the driven end provides rotation support, the barrel is arranged to be of a full jacket structure, a plurality of annular reinforcing ribs are arranged between the jacket and the inner wall, and the full jacket structure is divided into a plurality of heating chambers by the annular reinforcing ribs. The utility model discloses a final polycondensation reaction kettle barrel wall thickness attenuate reaches economic purpose to barrel intensity and sealing performance promote greatly.

Description

Final polycondensation reaction kettle

Technical Field

The utility model relates to a chemical industry equipment technical field, in particular to final polycondensation reaction kettle.

Background

The production process of high polymer materials such as PET, PTT, PBT, PBAT and the like is generally divided into three stages of esterification, pre-polycondensation and final polycondensation, and a final polycondensation reaction kettle is important equipment applied to the final polycondensation reaction process. A disc type or blade type stirrer is adopted in a traditional final polycondensation reaction kettle, so that the stirring is uneven and the reaction effect is poor. In view of this, cage frame agitator replaces original agitator in the final polycondensation reaction kettle of prior art, realizes the even effect of stirring.

However, the existing final polycondensation reaction kettle with a cage frame stirrer is usually provided with a honeycomb jacket structure to play a role in strengthening, the wall thickness of a cylinder body is reduced, so that an economic effect is achieved, but the space of a honeycomb tube is small, so that less air is not sufficiently combusted during welding, the welding effect of the honeycomb and the cylinder wall is poor, the leakage condition of the welding seam of the honeycomb tube is easy to occur when the temperature of equipment is raised in the subsequent use process, and the overall performance of the equipment is greatly influenced.

In addition, among the present horizontal final polycondensation reation kettle, generally drive cage frame agitator by the axis of rotation and rotate, when axis of rotation and cauldron body structure match, because the amount of deflection that the axis of rotation dead weight produced, can influence the transmission effect of axle on the one hand, thereby influence the stirring effect of cage frame agitator, on the other hand can influence the setting and can not normally work in near position sealing member of axis of rotation, thereby make the sealing performance in the cauldron receive certain influence, so the influence of two aspects, will influence the material reaction effect of the internal portion of cauldron.

SUMMERY OF THE UTILITY MODEL

The utility model is carried out for solving the problem, and aims to provide a final polycondensation reaction kettle with better overall performance.

The utility model provides a final polycondensation reaction kettle, a serial communication port, include: the device comprises a cylinder body, a gas phase pipe and a gas phase pipe, wherein the cylinder body is horizontally arranged and is provided with a first end and a second end which are opposite, a discharge hole and the gas phase pipe are arranged at the position of the cylinder body close to the first end, and a feed hole is arranged at the position of the cylinder body close to the second end; the main transmission end is arranged at the first end of the cylinder body, is connected with the transmission device and is driven by the transmission device to operate; the cage frame type stirrer is arranged inside the barrel and adopts a braided mesh structure; the driven end is arranged at the second end of the barrel and is connected with the cage frame type stirrer, the cage frame type stirrer is driven by the main driving end to rotate, the driven end provides rotation support, the barrel is arranged to be of a full jacket structure, a plurality of annular reinforcing ribs are arranged between the jacket and the inner wall, and the full jacket structure is divided into a plurality of heating chambers by the annular reinforcing ribs.

The utility model provides an in the final polycondensation reaction kettle, still have such characteristic: the main transmission end and the driven end adopt transmission end devices with the same structure, the transmission end devices are provided with shaft bodies, bearing assemblies are arranged on the peripheries of the shaft bodies, and the shaft bodies of the main transmission end and the driven end are respectively connected with two end portions of the cage frame type stirrer.

The utility model provides an in the final polycondensation reaction kettle, still have such characteristic: wherein, the bearing assembly in the transmission end device is divided into two groups.

The utility model provides an in the final polycondensation reaction kettle, still have such characteristic: wherein, be provided with mechanical seal subassembly, packing seal assembly and sealing washer subassembly among the transmission end device.

The utility model provides an in the final polycondensation reaction kettle, still have such characteristic: a plurality of woven meshes in the cage-frame type stirrer are welded on the supporting strip plates, the distance between the woven meshes is from sparse to dense from the second end of the cylinder to the first end of the cylinder, and the meshes of each woven mesh are gradually reduced from big to small.

The utility model provides an in the final polycondensation reaction kettle, still have such characteristic: wherein, the support slat is the diameter and increases the setting gradually from the second end of barrel to the first end of barrel for cage frame agitator diameter distributes and is the tapered structure.

The utility model provides an in the final polycondensation reaction kettle, its characterized in that still includes: and the two pressure probes are respectively arranged at the connecting part of the cylinder body and the main transmission end and the driven end.

The utility model has the advantages that:

the utility model discloses a barrel sets up to full jacket structure in the final polycondensation reaction kettle, is provided with a plurality of annular strengthening ribs between clamp cover and the inner wall, and annular strengthening rib separates full jacket structure for a plurality of heating cavities, can make equipment wall thickness attenuate when playing the gaining in strength, reaches economic purpose to the sealing performance of this structure is good, avoids appearing easily causing the problem of leaking like traditional honeycomb tube welding department.

In addition, two groups of bearing assemblies are arranged in the main transmission end and the driven end, so that the shaft body is well supported, the influence caused by the deflection of the shaft generated by gravity is overcome, the stirring stability of the cage frame type stirrer is ensured in the whole final polycondensation reaction kettle, the mechanical seal, the packing seal and the seal ring assembly at the joint of the main transmission end and the driven end and the barrel body are not influenced, and the integral sealing effect is improved.

In addition, the specific spacing and the specific diameter of a plurality of woven meshes in the cage-frame type stirrer are set, so that the materials can be better formed into a film.

Drawings

FIG. 1 is a schematic view of the overall structure of a final polycondensation reaction vessel in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the main transmission end in an embodiment of the present invention;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is a schematic structural diagram of a woven mesh in an embodiment of the present invention.

Detailed Description

In order to make the technical means, creation characteristics, achievement purpose and efficacy of the utility model easy to understand, the following embodiments are combined with the accompanying drawings to specifically describe the final polycondensation reaction kettle of the utility model.

< example >

As shown in FIG. 1, a final polycondensation reaction kettle adopts a horizontal structure, and comprises: barrel 2, main drive end 7, driven end 1.

The cylinder 2 is horizontally arranged, and the cylinder 2 is supported by a ring seat 13. The cylinder 2 is provided with a first end (an arrow A end shown in figure 1) and a second end (an arrow B end shown in figure 1) which are opposite, the cylinder 2 is arranged to be of a full jacket structure, and heat conducting oil is introduced into the jacket for heating. A plurality of annular reinforcing ribs 4 are arranged between the jacket and the inner wall, and the annular reinforcing ribs 4 divide the full jacket structure into a plurality of heating chambers. Through the setting of a plurality of heating chambers of annular strengthening rib partition, can make equipment wall thickness attenuate when playing the increase strength thereby reach economic purpose to the sealing performance of this structure is good, avoids appearing like traditional honeycomb tube welding department easily causes the problem of leaking.

The cylinder 2 is provided with a discharge port 12 and a gas phase pipe 5 at a position close to the first end, and the cylinder is provided with a feed port 14 at a position close to the second end. The material enters from the inlet 14, flows from the second end to the first end in the cylinder 2 and is discharged from the outlet 12.

The main transmission end 7 and the driven end 1 are respectively arranged at the first end and the second end of the cylinder body 2. The cage frame type stirrer 3 is arranged inside the barrel 2. As shown in fig. 1, the transmission device includes a motor 8, an elastic coupling 9, a reduction box 10, and a gear coupling 11. The motor 8 is connected with the reduction gearbox 10 through the elastic coupling 9, the reduction gearbox 10 is connected with one end of the shaft body in the main transmission end 7 through the gear coupling 11, the other end of the shaft body in the main transmission end 7 is connected with the cage frame type stirrer 3 through the shaft coupling or other conventional connection modes, and the cage frame type stirrer 3 is driven to rotate to realize material stirring. Another tip of cage frame agitator 3 is connected to the axis body in the driven end 1 for as the fulcrum, play the supporting role to cage frame agitator 3's rotation, make its rotation more stable, the stirring effect is better.

The cylinder 2 and the cage frame type stirrer 3 are made of the same stainless steel material. When the equipment is heated to the working temperature, the thermal expansion amount of the barrel 2 is the same as that of the cage frame type stirrer 3, so that the problem that the cage frame type stirrer is blocked due to interference between the cage frame type stirrer and the inner barrel caused by different thermal expansion amounts when the temperature is raised in the existing final polycondensation kettle with the cage frame type stirrer is solved.

In the cage frame type stirrer 3, a plurality of circular knitting net sheets are sequentially welded on a strip-shaped supporting slat. Referring to fig. 4, the structure of a woven mesh 31 is illustrated in fig. 4, and the woven mesh 31 includes mesh wires 312 woven into a mesh, and a circular through hole 311 opened at a central position. The spacing between the woven meshes in the cage-frame type stirrer 3 is from sparse to dense from the second end of the cylinder body to the first end of the cylinder body (namely along the material flow direction), and the meshes of each mesh are gradually reduced from large to small. The support slat is the diameter and increases the setting gradually from the second end of barrel to the first end of barrel for cage frame agitator diameter distributes and is the tapered structure. The mesh is woven to adopt and to make the material pass through the better film forming of mesh like this setting, and the surface volatile area of increase material to deviate from micromolecular material and accessory substance etc. makes the purity of material increase.

The main transmission end 7 and the driven end 1 adopt transmission end devices with the same structure. The construction of the drive end means will be explained in detail below, taking as an example the main drive end 7. Referring to fig. 2, fig. 2 illustrates the structure of the main transmission end 7, the upper half of fig. 2 illustrates its internal structure, and the lower half illustrates its internal and external structures. As shown in fig. 2, the main transmission end 7 includes a shaft body 71, a transmission end housing 72, an end cap 73, a connecting flange 74, a packing seal assembly 75, a mechanical seal assembly 76, a seal ring assembly 77, a bearing assembly 78, and a positioning cylinder 79.

The shaft body 71 is arranged inside the transmission end shell 72, the shaft body 71 adopts a short shaft, as shown in fig. 2, the left end part of the shaft body 1 is used for connecting the cage-frame type stirrer 3, and the right end part is used for connecting the reduction gearbox 10 through the gear coupling 11.

The left end of the drive end housing 72 is connected to a connecting flange 74 and the right end is connected to an end cap 73 as shown in fig. 2. The left end face of the connecting flange 74 is provided with a connecting through hole for connecting the cylinder 2, and the main transmission end 7 can be mounted at the first end of the cylinder 2 by bolts, as shown in fig. 1.

The packing seal assembly 75 comprises a shaft sleeve 751 arranged outside the shaft body 71 and a packing box 752 arranged outside the shaft sleeve 751, the packing box 752 is fixedly connected with the connecting flange 74 through bolts, the packing seal assembly 75 is used for sealing the joint of the main transmission end 7 and the cylinder 2, so that the sealing performance of the final polycondensation reaction kettle is improved, the driven end 1 is connected to play a role in sealing, and specific arrangement of the driven end 1 is not repeated herein.

A mechanical seal assembly 76 and a seal ring assembly 77 (shown in fig. 3) are disposed within the drive end housing 72 for sealing purposes. Because the main transmission end 7 and the driven end 1 are both provided with the mechanical seal assembly 76, the two end parts of the final polymerization reaction kettle realize better sealing effect.

The seal ring assembly 77 includes a plurality of seal rings 771-777 disposed at a plurality of locations within the main drive end 7 as shown in FIG. 3.

The bearing assembly 78 includes a first set of bearing assemblies 781 disposed adjacent to the mechanical seal assembly 76 and a second set of bearing assemblies 782 disposed adjacent to the end cap 73, the first set of bearing assemblies 781 and the second set of bearing assemblies 782 being positioned by a positioning cylinder 79 disposed on the exterior of the shaft body. Because the setting of two groups of bearing assemblies, play fine support to the axis body 71 to overcome the influence that the amount of deflection of axle that produces because gravity brought, and in whole final polycondensation reation kettle, because main drive end 7 all is provided with two groups of bearing assemblies with by drive end 1, guaranteed the stability of its axis body, and then guaranteed the stirring stability of cage frame agitator 3, and also guaranteed the main drive end, by the inside mechanical seal of drive end and filler seal, the sealing washer subassembly can not receive the influence, improve the whole sealed effect.

The bearing seat cavity of first group bearing assembly 781 and the bearing seat cavity of second group bearing assembly 782 are through seting up the cooling water pipeline 83 intercommunication on transmission end casing 72, and water inlet and delivery port are connected to this cooling water pipeline 83, play the cooling effect to two bearing seats through the cooling water circulation, guarantee that bearing assembly is in good operational environment.

As shown in figure 1, the cylinder 2 is connected with the main transmission end 7 and the driven end 1 respectively through the pressure probes 6 for detecting the internal pressure in the embodiment, so that the worker can timely know the pressure inside the kettle body, and the reaction condition of the materials inside the kettle body can be better controlled.

The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a final polycondensation reaction kettle, adopts horizontal structure setting, its characterized in that includes:

the gas phase tube type gas phase separator comprises a cylinder body, a gas phase tube and a gas phase tube, wherein the cylinder body is horizontally arranged and is provided with a first end and a second end which are opposite to each other;

the main transmission end is arranged at the first end of the cylinder body, is connected with a transmission device and is driven by the transmission device to operate;

the cage frame type stirrer is arranged inside the barrel and adopts a braided mesh structure;

a driven end arranged at the second end of the cylinder body and connected with the cage-frame type stirrer,

wherein the cage frame type stirrer is driven by the main driving end to rotate and is provided with a rotating support by the driven end,

the barrel is of a full-jacket structure, a plurality of annular reinforcing ribs are arranged between the jacket and the inner wall, and the full-jacket structure is divided into a plurality of heating chambers by the annular reinforcing ribs.

2. The final polycondensation reactor of claim 1, wherein:

wherein the main transmission end and the driven end adopt transmission end devices with the same structure, the transmission end devices are provided with shaft bodies, the peripheries of the shaft bodies are provided with bearing assemblies,

and the shaft body of the main transmission end and the shaft body of the driven end are respectively connected with two end parts of the cage frame type stirrer.

3. The final polycondensation reactor of claim 2, wherein:

wherein the bearing assemblies in the drive end device are in two groups.

4. The final polycondensation reactor of claim 2, wherein:

the transmission end device is provided with a mechanical sealing assembly, a packing sealing assembly and a sealing ring assembly.

5. The final polycondensation reactor of claim 1, wherein:

wherein a plurality of woven meshes in the cage-frame type stirrer are welded on the supporting strip plate,

the distance between the woven meshes is from sparse to dense from the second end of the cylinder body to the first end of the cylinder body, and the meshes of each woven mesh are gradually reduced from big to small.

6. The final polycondensation reactor of claim 5, wherein:

wherein, the brace slat follow the second end of barrel is the diameter crescent setting to the first end of barrel makes cage frame agitator diameter distribution is the tapered structure.

7. The final polycondensation reactor of claim 1, further comprising:

and the two pressure probes are respectively arranged at the connecting part of the cylinder body and the main transmission end and the driven end.