CN219399789U - Be used for p-phenylenediamine dry powder and DMAC solvent quick mixing dissolving kettle - Google Patents

Abstract

The utility model provides a dissolving kettle for quickly mixing p-phenylenediamine dry powder with DMAC solvent. The dissolution kettle comprises a kettle body, a cover body which is arranged above the kettle body in a covering manner and a stirring device which is vertically inserted into the kettle body through the cover body, wherein a plurality of vertical spoilers are arranged on the inner wall of the kettle body, the stirring device comprises a driving motor, a bracket, a stirring shaft and a stirring paddle assembly, the stirring shaft is coaxially and fixedly arranged at the output end of the driving motor, the driving motor is fixedly arranged on the cover body through the bracket, the stirring paddle assembly is fixedly arranged at one end of the stirring shaft far away from the driving motor, a feeding hole and a liquid inlet are formed in the cover body, and a discharging hole is formed in the bottom end of the kettle body. The plurality of vertical spoilers are arranged on the inner wall of the kettle body, so that the rapid mixing of p-phenylenediamine and DMAC solvent is promoted; through setting up agitating unit spare, stir the para-phenylenediamine to the multi-angle, avoid appearing stirring and mix incomplete phenomenon, improve the mixed dissolving quality of para-phenylenediamine, prevent that the para-phenylenediamine from piling up at the internal bottom of cauldron.

Description

Be used for p-phenylenediamine dry powder and DMAC solvent quick mixing dissolving kettle

Technical Field

The utility model relates to the technical field of spinning machinery, in particular to a dissolving kettle for quickly mixing p-phenylenediamine dry powder and DMAC solvent.

Background

Polyimide fiber production requires thorough mixing of the para-phenylenediamine dry powder with the DMAC (dimethylacetamide) solvent at the early stage of the polymerization stage to form a para-phenylenediamine and DMAC suspension, which requires rapid mixing because the para-phenylenediamine is insoluble in the DMAC solvent. The conventional dissolution kettle adopts a frame type stirring mode, and the bottom of the dissolution kettle adopts a conventional valve. In the stirring process, p-phenylenediamine powder is easily accumulated at the bottom of the dissolution kettle, the p-phenylenediamine in the suspension is layered up and down, and the stirring and mixing in the solvent are uneven.

Disclosure of Invention

The utility model aims to provide a dissolving kettle for quickly mixing p-phenylenediamine dry powder and DMAC solvent, which is used for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a be used for p-phenylenediamine dry powder and DMAC solvent quick mix dissolving kettle, including the cauldron body, lid dress in the lid of cauldron body top and pass the vertical cartridge of lid in the internal agitating unit of cauldron, be provided with polylith vertical spoiler on the inner wall of the cauldron body, agitating unit includes driving motor, support, (mixing) shaft and stirring rake subassembly, the coaxial dress of (mixing) shaft in driving motor's output, driving motor passes through the support dress is on the lid admittedly, the stirring rake subassembly adorn admittedly in keep away from on the (mixing) shaft driving motor's one end, feed inlet and inlet have been seted up on the lid, just the feed inlet with the inlet is located respectively the both sides of support, the discharge gate has been seted up to the bottom of the cauldron body.

Further, the stirring paddle assembly comprises a first propelling stirring paddle, a second propelling stirring paddle and a frame stirring paddle, wherein the first propelling stirring paddle, the second propelling stirring paddle and the frame stirring paddle are sequentially arranged on the stirring shaft from top to bottom, and the frame stirring paddle is positioned at the bottom of the stirring shaft.

Further, the blades of the first propelling stirring paddle are obliquely downwards arranged and form an included angle of 20-30 degrees with the stirring shaft.

Further, the blades of the second propelling stirring paddle are perpendicular to the stirring shaft.

Further, the blades of the frame type stirring paddle are in an arc shape with an upward opening.

Further, the distance between the first propelling stirring paddle and the second propelling stirring paddle is equal to the distance between the second propelling stirring paddle and the frame stirring paddle.

Further, the distance between the frame type stirring paddle and the first propelling stirring paddle is 1/3-1/2 of the length of the stirring shaft.

Further, the outer wall of the kettle body is sleeved with a heating sleeve.

Further, a discharge hole of the kettle body is communicated with a discharge pipe, and a lower-expansion type discharge valve is arranged on the discharge pipe.

Further, the kettle body is also provided with a feed supplement port.

Compared with the prior art, the utility model provides the dissolving kettle for quickly mixing the p-phenylenediamine dry powder and the DMAC solvent, which has the following beneficial effects:

(1) According to the rapid mixing dissolving kettle for the p-phenylenediamine dry powder and the DMAC solvent, the p-phenylenediamine and the DMAC solvent are promoted to be rapidly mixed by arranging a plurality of vertical spoilers on the inner wall of the kettle body;

(2) This p-phenylenediamine dry powder and DMAC solvent quick mixing dissolving kettle through setting up agitating unit spare, can stir the p-phenylenediamine multi-angle, avoids appearing stirring mix incomplete phenomenon, improves the mixed dissolving quality of p-phenylenediamine, prevents that the p-phenylenediamine from piling up at the internal bottom of cauldron.

Drawings

FIG. 1 is a schematic diagram of a dissolving kettle for quickly mixing p-phenylenediamine dry powder with DMAC solvent.

In the figure: 1. a kettle body; 11. vertical spoiler; 12. a discharge port; 13. a discharge tube; 14. a lower-expansion type discharging valve; 15. a feed supplement port; 16. a heating jacket; 2. a cover body; 21. a feed inlet; 22. a liquid inlet; 3. a stirring device; 31. a driving motor; 32. a bracket; 33. a stirring shaft; 34. a paddle assembly; 341. a first pusher-type paddle; 342. a second pusher-type paddle; 343. frame type stirring paddles.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1, the fast mixing dissolving kettle for the p-phenylenediamine dry powder and the DMAC solvent comprises a kettle body 1, a cover body 2 which is arranged above the kettle body 1 in a covering manner, and a stirring device 3 which is vertically inserted into the kettle body 1 through the cover body 2, wherein a plurality of vertical spoilers 11 are arranged on the inner wall of the kettle body 1, the stirring device 3 comprises a driving motor 31, a bracket 32, a stirring shaft 33 and a stirring paddle assembly 34, the stirring shaft 33 is coaxially and fixedly arranged at the output end of the driving motor 31, the driving motor 31 is fixedly arranged on the cover body 2 through the bracket 32, the stirring paddle assembly 34 is fixedly arranged at one end, far away from the driving motor 31, of the stirring shaft 33, a feed inlet 21 and a feed inlet 22 are formed in the cover body 2, the feed inlet 21 and the feed inlet 22 are respectively arranged at two sides of the bracket 32, and a discharge outlet 12 is formed at the bottom end of the kettle body. The inner wall of the kettle body is provided with a plurality of vertical spoilers, so that the rapid mixing of p-phenylenediamine and DMAC solvent is promoted; through setting up agitating unit spare, can stir the para-phenylenediamine multi-angle, avoid appearing stirring incomplete phenomenon of mixing, improve the mixed dissolving quality of para-phenylenediamine, prevent that the para-phenylenediamine from piling up in the internal bottom of cauldron for para-phenylenediamine and DMAC solvent misce bene.

In some embodiments, to prevent build-up of p-phenylenediamine powder at the bottom of the kettle, the paddle assembly 34 may include a first push paddle 341, a second push paddle 342, and a rim paddle 343, the first push paddle 341, the second push paddle 342, and the rim paddle 343 being sequentially disposed on the stirring shaft 33 from top to bottom, wherein the rim paddle 343 is located at the bottom of the stirring shaft 33.

In some embodiments, to provide rapid circumferential downward motion of the p-phenylenediamine powder, the blades of first propeller 341 may be positioned diagonally downward at an angle of 20 to 30 from stirring shaft 33. The first push type stirring paddle 341 includes two paddles symmetrically arranged about the stirring shaft 33.

In some embodiments, to allow the para-phenylenediamine powder to quickly form a suspension with the DMAC solvent, the blades of the second propeller stirrer 342 may be disposed perpendicular to the stirrer shaft 33. The second propeller 342 includes two blades, and is disposed symmetrically about the stirring shaft 33.

In some embodiments, to achieve the up-and-down layer tumbling motion of the suspension of p-phenylenediamine powder and DMAC solvent, the blades of frame paddles 343 may be in the shape of an upwardly opening arc.

In some embodiments, to ensure torque transmission efficiency and improve mixing quality, the spacing of the first and second propeller paddles 341, 342 is equal to the spacing of the second propeller paddle 342 and the frame-type paddle 343.

In some embodiments, to increase the efficiency of uniformly mixing the p-phenylenediamine powder with the DMAC solvent, the frame paddles 343 may be spaced from the first propeller paddles 341 1/3 to 1/2, preferably 1/3, of the length of the stirring shaft 33.

In some embodiments, to improve mixing quality and efficiency, the outer wall of the kettle body 1 may be sheathed with a heating jacket 16.

In some embodiments, in order to prevent the situation that the materials are accumulated at the bottom because the materials cannot be stirred, the discharging hole 12 of the kettle body 1 is provided with a discharging pipe 13 in a communicating manner, and the discharging pipe 13 is provided with a lower expansion type discharging valve 14.

In some embodiments, to facilitate the operation of staff, a feed inlet 15 may be further provided on the kettle body 1.

The novel dissolution kettle adopts a combined stirring paddle mode, the stirring paddles adopt two groups of four-blade propelling type and small frame type to be combined, and a plurality of vertical spoilers are arranged on the inner wall of the kettle body 1; a lower expansion type discharging valve 14 is used at the bottom of the dissolution kettle to prevent p-phenylenediamine from accumulating; the driving motor 31 can adopt a variable frequency control motor to stir and regulate the speed. The p-phenylenediamine is added into DMAC solvent in the dissolution kettle, torque feedback is carried out through a stirring paddle assembly 34, a frequency converter controls a motor to regulate speed, and when the torque is large, the frequency converter controls the motor to slow down; when the moment becomes smaller, the frequency converter controls the motor until stirring at full speed. The p-phenylenediamine dry powder is enabled to form rapid circular downward rapid movement through a first pushing stirring paddle 341 with a downward angle of 20 degrees; the p-phenylenediamine continues to move downwards circularly to the second propelling stirring paddle 342, and after forming suspension with DMAC, the p-phenylenediamine is brought to move circularly through the frame stirring paddle 343, and the up-and-down layer turnover movement is formed; the suspension is disturbed by the plurality of vertical spoilers 11 in the mixing motion in the dissolution kettle body 1 to form irregular motion, so as to generate more sufficient mixing condition. The bottom of the dissolution kettle adopts a lower-expansion type discharging valve 14, so that the situation that the materials are accumulated due to incapability of stirring at the bottom is prevented.

The above is not relevant and is applicable to the prior art.

While certain specific embodiments of the present utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the foregoing examples are provided for the purpose of illustration only and are not intended to limit the scope of the utility model, and that various modifications or additions and substitutions to the described specific embodiments may be made by those skilled in the art without departing from the scope of the utility model or exceeding the scope of the utility model as defined in the accompanying claims. It should be understood by those skilled in the art that any modification, equivalent substitution, improvement, etc. made to the above embodiments according to the technical substance of the present utility model should be included in the scope of protection of the present utility model.

Claims (10)

1. Be used for p-phenylenediamine dry powder and DMAC solvent flash mixed dissolving kettle, a serial communication port, including the cauldron body (1), lid dress lid (2) and pass lid (2) vertical cartridge stirring device (3) in the cauldron body (1), be provided with polylith vertical spoiler (11) on the inner wall of the cauldron body (1), stirring device (3) include driving motor (31), support (32), (33) and stirring rake subassembly (34), coaxial solid dress of (33) is in the output of driving motor (31), driving motor (31) pass through support (32) are solid dress on lid (2), stirring rake subassembly (34) are solid dress in keep away from on (33) one end of driving motor (31), feed inlet (21) and inlet (22) have been seted up on lid (2), just feed inlet (21) and inlet (22) are located respectively the output of (31) the support (12) are equipped with to open both sides of the cauldron body (32).

2. The rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent according to claim 1, wherein the stirring paddle assembly (34) comprises a first propelling stirring paddle (341), a second propelling stirring paddle (342) and a frame stirring paddle (343), the first propelling stirring paddle (341), the second propelling stirring paddle (342) and the frame stirring paddle (343) are sequentially arranged on the stirring shaft (33) from top to bottom, and the frame stirring paddle (343) is positioned at the bottom of the stirring shaft (33).

3. A rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as in claim 2, wherein the blades of said first propeller (341) are disposed diagonally downward at an angle of 20 ° to said stirring shaft (33) ^° ～30 ^° _。

4. A flash mixing dissolution kettle for para-phenylenediamine dry powder and DMAC solvent as defined in claim 3 wherein the blades of said second pusher paddle (342) are disposed perpendicular to said stirring shaft (33).

5. A flash mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as claimed in claim 4, wherein the blades of said frame stirrer (343) are in the shape of upwardly open arcs.

6. A flash mixing dissolution kettle for para-phenylenediamine dry powder with DMAC solvent as recited in claim 5 wherein the first pusher paddle (341) is spaced from the second pusher paddle (342) by a distance equal to the distance between the second pusher paddle (342) and the frame paddle (343).

7. A rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as defined in claim 6, wherein the spacing of said frame stirrer (343) from said first propeller stirrer (341) is 1/3 to 1/2 of the length of said stirring shaft (33).

8. A rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as claimed in claim 1, wherein the outer wall of the kettle body (1) is sleeved with a heating jacket (16).

9. A rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as claimed in claim 1, wherein a discharge port (12) of the kettle body (1) is provided with a discharge pipe (13) in communication, and a lower expansion type discharge valve (14) is arranged on the discharge pipe (13).

10. A rapid mixing dissolution kettle for p-phenylenediamine dry powder and DMAC solvent as claimed in claim 9, wherein a feed port (15) is further provided on the kettle body (1).