High-position filter basket blowback structure for PA6 slice extraction
By evenly opening holes and welding and sealing the backflush structure of the high-position filter basket for PA6 slice extraction, nitrogen is used to achieve online cleaning of the filter basket, solving the problems caused by the attachment and disassembly of the top filter basket and improving the cleaning efficiency and sealing.
Patent Information
- Application Number
- CN202422816985.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In the existing PA6 chip extraction process, slices adhere to the top filter basket during use, requiring regular disassembly and cleaning. Disassembly can easily cause high-level water spray and scalding incidents. Frequent replacement increases the workload of operators, and the filter basket is prone to deformation and poor sealing.
A high-position filter basket backflushing structure for PA6 slice extraction was designed. By evenly opening holes in the backflushing pipe and welding it to seal it, the filter basket surface was cleaned using evenly distributed nitrogen, achieving online cleaning and reducing disassembly frequency.
It improves the cleaning effect of the filter basket, reduces the probability of scalding, extends the cleaning cycle, and maintains the sealing and precision of the filter basket.
Smart Images
Figure CN223439217U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PA6 slice extraction high position filter basket back flush related technical field, especially in kind of PA6 slice extraction high position filter basket back flush structure. BACKGROUND
[0002] The production method of fiber grade PA6 slice is that caprolactam is hydrolyzed ring opening under high temperature condition, then addition polycondensation reaction is carried out to generate polyhexamethylene adipamide (PA6), in this process, the hydrolysis polymerization of caprolactam is a reversible equilibrium reaction, so a small amount of caprolactam monomer and oligomer are still contained in the final polymer, the existence of these substances will influence spinning broken end rate, must be removed, the hot water continuous extraction process is generally used in industry, that is, slice enters from the upper part of extraction tower, moves from top to bottom, hot water enters from the bottom of extraction tower, moves from bottom to top and moves reversely with slice, and monomer and oligomer in PA6 slice are extracted.
[0003] Common PA6 slice extraction process, the slice will adhere to the surface of the filter basket during the use of the top filter basket, and regular disassembly and cleaning are needed, however, the extraction filter basket is immersed in the extraction water at about 100 DEG C, when the filter basket is disassembled, high position water spraying and scalding events are easily caused due to the change of pressure in the tower, meanwhile, frequent replacement of the extraction filter basket increases the workload of the operator, and the filter basket is easily deformed, filtration precision and sealing performance are poor due to frequent disassembly of the filter basket. UTILITARIAN CONTENT
[0004] The utility model aims at providing a kind of PA6 slice extraction high position filter basket back flush structure, to solve the problem that the slice will adhere to the surface of the filter basket during the use of the top filter basket in the above background art, and regular disassembly and cleaning are needed, however, the extraction filter basket is immersed in the extraction water at about 100 DEG C, when the filter basket is disassembled, high position water spraying and scalding events are easily caused due to the change of pressure in the tower, meanwhile, frequent replacement of the extraction filter basket increases the workload of the operator, and the filter basket is easily deformed, filtration precision and sealing performance are poor due to frequent disassembly of the filter basket.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of PA6 slice extraction high position filter basket back flush structure, including filter basket, the outer circle of one end of the filter basket is welded with top joint sealing plate, one end of the top joint sealing plate is provided with top cover, one end of the top cover is penetrated with back flush pipeline, one end of the back flush pipeline is provided with socket welding flange, gas hole is set on the surface of the back flush pipeline, the outer circle of the other end of the filter basket is welded with bottom interface sealing plate, one end of the bottom interface sealing plate is provided with bottom taper head.
[0006] Preferably, the top joint sealing plate and top cover are integrated structure, the top joint sealing plate is connected with filter basket by full welding.
[0007] Preferably, the bottom interface sealing plate and the bottom taper head are integrated structure, and the bottom interface sealing plate is connected with the filter basket by full welding.
[0008] Preferably, one end of the socket welding flange is connected with a nitrogen inlet.
[0009] Preferably, the air holes are arranged on the surface of the back flushing pipe at equal intervals, a group of air holes are drilled every 20mm, each group has four air holes, and the air holes in each group are staggered by 45 degrees, the air holes are φ5mm round holes, and the bottom end of the back flushing pipe is sealed by welding.
[0010] Compared with the prior art, the PA6 chip extraction high-position filter basket back flushing structure has the advantages that the air holes are uniformly arranged on the back flushing pipe, the bottom of the back flushing pipe is welded and sealed, nitrogen gas is uniformly distributed to the entire extraction filter basket, the cleaning effect of the back flushing gas on the surface of the filter basket is enhanced, online cleaning of the extraction high-position filter basket is realized, the probability of scalding is reduced, and the cleaning cycle of the filter basket is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a sectional structure structural schematic view of the utility model.
[0012] In the drawing: 1, filter basket; 2, top joint sealing plate; 3, top cover; 4, back flushing pipe; 5, socket welding flange; 6, air hole; 7, bottom interface sealing plate; 8, bottom taper head. DETAILED DESCRIPTION
[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0014] Please refer to Figure 1 The utility model provides a kind of technical scheme: a kind of PA6 chip extraction high-position filter basket back flushing structure, including filter basket 1, one end outer ring of filter basket 1 is welded with top joint sealing plate 2, one end of top joint sealing plate 2 is provided with top cover 3, top cover 3 one end is penetrated with back flushing pipe 4, one end of back flushing pipe 4 is provided with socket welding flange 5, the surface of back flushing pipe 4 is provided with air hole 6, the other end outer ring of filter basket 1 is welded with bottom interface sealing plate 7, one end of bottom interface sealing plate 7 is provided with bottom taper head 8.
[0015] Further, the top joint sealing plate 2 and the top cover 3 are integrated structures, the top joint sealing plate 2 is connected with the filter basket 1 through full welding, through the setting of the top joint sealing plate 2, the top joint sealing plate 2 is connected with the filter basket 1 through full welding, the sealing property of the top cover 3 can be increased.
[0016] Further, the bottom interface sealing plate 7 and the bottom taper head 8 are integrated structures, the bottom interface sealing plate 7 is connected with the filter basket 1 through full welding, through the setting of the bottom interface sealing plate 7, the sealing stability of the connection between the bottom taper head 8 and the top cover 3 can be increased.
[0017] Further, one end of the socket welding flange 5 is connected with a nitrogen input port, through the setting of the socket welding flange 5, the socket welding flange 5 can be used as a connecting piece of the gas input of the back flushing pipeline 4.
[0018] Further, the air holes 6 are arranged on the surface of the back flushing pipeline 4 at equal intervals, one group of the air holes 6 is drilled every 20mm, one group has four air holes, the air holes in each group are staggered by 45 degrees, the air holes 6 are φ5mm round holes, the bottom end of the back flushing pipeline 4 is sealed through welding, through the setting of the air holes 6, the back flushing nitrogen can be uniformly distributed to the whole extraction filter basket, and the purpose of automatically cleaning the filter basket can be achieved.
[0019] Working principle: first, one end of the back flushing pipeline 4 is sealed and installed to a position close to the bottom of the filter basket 1, then the back flushing pipeline 4 is connected with the nitrogen input port outside the socket welding flange 5, when the nitrogen enters the back flushing pipeline 4 from the input port, the nitrogen is uniformly distributed to the inner surface of the filter basket 1 through the air holes 6 on the surface of the back flushing pipeline 4, and the cuttings adhered to the bottom of the filter basket 1 are cleaned.
[0020] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A high-position filter basket backflushing structure for PA6 slice extraction, comprising a filter basket (1), characterized in that: A top joint sealing plate (2) is welded to the outer ring of one end of the filter basket (1), a top cover (3) is provided at one end of the top joint sealing plate (2), a backflush pipe (4) is passed through one end of the top cover (3), a socket welding flange (5) is provided at one end of the backflush pipe (4), an air hole (6) is opened on the surface of the backflush pipe (4), a bottom interface sealing plate (7) is welded to the outer ring of the other end of the filter basket (1), and a bottom cone head (8) is provided at one end of the bottom interface sealing plate (7).
2. The high-position filter basket backflushing structure for PA6 slice extraction according to claim 1 is characterized in that: The top joint sealing plate (2) and the top cover (3) are an integrated structure, and the top joint sealing plate (2) and the filter basket (1) are connected by full welding.
3. The high-position filter basket backflushing structure for PA6 slice extraction according to claim 1 is characterized in that: The bottom interface sealing plate (7) and the bottom cone head (8) are an integrated structure, and the bottom interface sealing plate (7) is connected to the filter basket (1) by full welding.
4. The high-position filter basket backflushing structure for PA6 slice extraction according to claim 1 is characterized in that: One end of the socket welding flange (5) is connected to a nitrogen inlet.
5. The high-position filter basket backflushing structure for PA6 slice extraction according to claim 1 is characterized in that: The air holes (6) are opened at equal intervals on the surface of the back-blowing pipe (4). The air holes (6) are drilled in groups at intervals of 20 mm, with each group consisting of 4 holes, and each group of holes is staggered by 45°. The air holes (6) are φ5 mm round holes, and the bottom end of the back-blowing pipe (4) is sealed by welding.