Anti-blocking nozzle for aramid resin synthesis kettle

Abstract

The utility model discloses a kind of anti-blocking nozzles in aramid resin synthesis kettle, fixed by anti-blocking nozzle shell thread connection original nozzle pipe, shell inside is connected with the anti-blocking nozzle cap below nozzle by valve stem one end, the other end is connected with cover nut, valve stem is in series into compression spring, then it is positioned into fixed block, when second kind of reaction monomer is passed through stamping blanking, nozzle is under the action of pressure, anti-blocking nozzle cap is stressed to open downward, material is smoothly entered into synthesis kettle, at this time, compression spring occurs elastic compression and generates deformation, when material is completed, pressure disappears, at this time, compression spring restores the deformation expansion and contraction amount generated by compression, therefore, anti-blocking nozzle cap restores to with shell airtight state, to prevent that polymerization intermediate enters nozzle and occurs jamming phenomenon.

Description

Technical Field

[0001] This utility model relates to an anti-clogging device, specifically an anti-clogging nozzle for use in an aramid resin synthesis reactor. Background Technology

[0002] Para-aramid, one of the three major high-performance fibers, boasts a strength 5-6 times that of steel wire while weighing only one-fifth, and also possesses properties such as high-temperature resistance, corrosion resistance, and insulation. However, in the preparation of para-aramid filaments, the synthesis of para-aramid resin plays a crucial role in the production quality of the aramid filaments. Currently, for resin synthesis reactors, such as... Figure 1 As shown, the first monomer (p-phenylenediamine) feed port 1 is the feed port for the first monomer in the polymerization reaction. It enters the reactor through a high-level difference. After the first monomer enters the reactor, the stirring motor 4 of the resin synthesis kettle needs to be started to drive the stirring mechanism 3 for high-speed stirring. Then, the second monomer (terephthaloyl chloride) is forced into the reactor through the second monomer feed port 2 by stamping. Due to the easy solidification of the second monomer, an internal nozzle is required when the material is discharged to prevent the material from splashing onto the reactor shell 6 and solidifying, which would affect the resin synthesis material ratio and further affect the resin quality. After the reaction is completed, the resin needs to be discharged through the reactor discharge port 5 for subsequent processing.

[0003] Because the second monomer is fed internally, during the polymerization reaction between the two materials in the reactor, the stirring action causes centrifugal force on the polymerization intermediates. Some of the intermediates enter the nozzle at the second monomer feed port and solidify, leading to nozzle blockage. This results in unstable production operations and increased workload for workers, and current technology offers no solution to this problem. Utility Model Content

[0004] The purpose of this invention is to provide an anti-clogging nozzle for use in aramid resin synthesis reactors. It has a simple structure, obvious effect, and solves the problems existing in the prior art.

[0005] Based on the above objectives, the technical solution adopted by this utility model is as follows: An anti-clogging nozzle for use in an aramid resin synthesis reactor, wherein the monomer discharge port of the aramid resin synthesis reactor is provided with a nozzle tube, the anti-clogging nozzle and the nozzle tube are threadedly connected, the anti-clogging nozzle includes an anti-clogging nozzle housing, a valve stem and an anti-clogging nozzle cap, the upper and lower ends of the anti-clogging nozzle housing are open and the upper part is provided with an internal thread for connecting to the nozzle tube, the lower part of the anti-clogging nozzle housing is provided with a fixing block, the upper end of the fixing block is fixed in the anti-clogging nozzle housing by a support arm, the fixing block is provided with a channel for the valve stem to pass through and the upper part of the fixing block is provided with a cavity for accommodating a compression spring, the valve stem passes through the fixing block and the lower end of the valve stem is provided with a circular anti-clogging nozzle cap, and the top end of the valve stem is provided with a cap-type nut.

[0006] Furthermore, a compression spring is fitted on the valve stem cover between the cavity inside the fixing block and the cap nut, and in the natural state of the compression spring, the anti-clogging nozzle cap closes the lower end of the anti-clogging nozzle housing.

[0007] Furthermore, the polymerizable monomer refers to terephthaloyl chloride.

[0008] With the above design, when the material enters the synthesis reactor during the polymerization reaction of para-aramid resin, the pressurized material pushes open the anti-clogging nozzle cap. At this time, the pressure spring is in a compressed state. When the material is finished being fed, the material pressure disappears, and the pressure spring will restore its extension and contraction, sealing the anti-clogging nozzle cap and thus covering the nozzle to prevent intermediates and other oligomers from entering the nozzle and clogging it.

[0009] This invention employs the aforementioned structure, which is reliable. By designing a retractable nozzle cap, it solves the problem of frequent nozzle clogging in the synthesis reactor. It achieves significant economic benefits and resolves the problems existing in the prior art. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the reactor of this utility model; Figure 2 This is a schematic diagram of the anti-clogging nozzle of this utility model; In the figure, 1. First polymer monomer discharge port, 2. Second polymer monomer discharge port, 3. Stirring mechanism, 4. Stirring motor, 5. Synthesis reactor discharge port, 6. Synthesis reactor shell, 7. Internal nozzle tube, 8. Anti-clogging nozzle shell, 9. Compression spring, 10. Anti-clogging nozzle cap, 11. Valve stem, 12. Fixing block, 13. Cap nut. Detailed Implementation

[0011] To clearly illustrate the technical features of this solution, the process will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0012] An anti-clogging nozzle for use in an aramid resin synthesis reactor, such as Figure 1 and Figure 2As shown, the aramid resin synthesis reactor has an internal nozzle tube 7 (original nozzle tube) at the terephthaloyl chloride polymerization monomer discharge port 2. The anti-clogging nozzle and the internal nozzle tube 7 are threaded together. The anti-clogging nozzle includes an anti-clogging nozzle housing 8, a valve stem 11, and an anti-clogging nozzle cap 10. The upper and lower ends of the anti-clogging nozzle housing 8 are open, and the upper part is provided with an internal thread that connects to the internal nozzle tube 7. The lower part of the anti-clogging nozzle housing 8 is provided with a fixing block 12. The upper end of the fixing block 12 is fixed in the anti-clogging nozzle housing 8 by two support arms. The fixing block 12 is provided with a channel for the valve stem 11 to pass through, and the upper part of the fixing block 12 is provided with a cavity to accommodate a compression spring. The valve stem 11 passes through the fixing block 12, and the lower end of the valve stem 11 is provided with a circular anti-clogging nozzle cap 10. The top end of the valve stem 11 is provided with a cap nut 13.

[0013] A compression spring 9 is fitted on the valve stem 11 between the cavity in the fixing block 12 and the cap nut 13. In the natural state of the compression spring 9, the anti-clogging nozzle cap 10 closes the lower end of the anti-clogging nozzle housing 8.

[0014] When the second reaction (terephthaloyl chloride) monomer is fed through the stamping, the nozzle is opened downward under pressure, and the material smoothly enters the synthesis reactor. At this time, the pressure spring 9 undergoes elastic compression and deformation. When the material is released, the pressure disappears, and the pressure spring 9 returns to the deformation caused by compression. Therefore, the anti-clogging nozzle cap 10 returns to a sealed state with the shell, thereby preventing the polymerization intermediate from entering the inner nozzle tube 7 and causing blockage.

[0015] Any aspects of this utility model not described in detail are known to those skilled in the art.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the specific implementation of this utility model and not to limit it. Those skilled in the art should understand that any equivalent substitutions or obvious modifications made to the implementation of this utility model without changing its performance or use, without violating the spirit of this utility model, should be covered within the scope of protection claimed by this utility model.

Claims

1. A clog-resistant nozzle for use in an aramid resin synthesis reactor, wherein a nozzle tube is provided at the monomer discharge port of the aramid resin synthesis reactor, and the clog-resistant nozzle and the nozzle tube are threadedly connected, characterized in that, The anti-clogging nozzle includes an anti-clogging nozzle housing, a valve stem, and an anti-clogging nozzle cap. The upper and lower ends of the anti-clogging nozzle housing are open, and the upper part is provided with an internal thread for connecting to the nozzle tube. A fixing block is provided in the lower part of the anti-clogging nozzle housing. The upper end of the fixing block is fixed in the anti-clogging nozzle housing by a support arm. The fixing block is provided with a channel for the valve stem to pass through, and the upper part of the fixing block is provided with a cavity to accommodate a compression spring. The valve stem passes through the fixing block, and the lower end of the valve stem is provided with a circular anti-clogging nozzle cap. The top end of the valve stem is provided with a cap-type nut.

2. The anti-clogging nozzle for use in an aramid resin synthesis reactor according to claim 1, characterized in that, A compression spring is fitted on the valve stem cover between the cavity in the fixing block and the cap nut, and in the natural state of the compression spring, the anti-clogging nozzle cap closes the lower end of the anti-clogging nozzle housing.

3. The anti-clogging nozzle for use in an aramid resin synthesis reactor according to claim 1, characterized in that, The polymer monomer refers to terephthaloyl chloride.

Images