Continuous polyester ring stirrer, manufacturing method and high-viscosity polymerization reaction kettle

Abstract

The invention discloses a continuous polyester ring stirrer, a manufacturing method and a high-viscosity polymerization reaction kettle, and belongs to the technical field of stirring equipment. The continuous polyester ring type stirrer mainly comprises a grid cylinder provided with a plurality of film hanging holes, and a ring piece is fixed on the inner wall of the grid cylinder; the first circular ring piece located at the low-viscosity end D of the grid barrel is a perforated circular ring piece; and retention circular ring sheets are sequentially arranged on the inner wall of the grid cylinder body at intervals from the perforated circular ring sheets to the G direction of the high-viscosity end of the grid cylinder body. The continuous polyester ring stirrer is manufactured by adopting a production mode of double-region zoning concentric feeding. According to the stirrer disclosed by the invention, polymer melt is retained without material accumulation, the film formation area is large, the film formation effect is good, small-molecule by-products are quickly volatilized, and the polymerization reaction efficiency is high; the manufacturing method is efficient and low in cost, and the manufactured product is high in quality. And the method is of great significance in improving the whole machine quality of the high-viscosity polymerization reaction kettle and simplifying the later maintenance work of the whole machine.

Description

Technical Field

[0001] The present invention belongs to the technical field of stirring equipment, and in particular, relates to a continuous polyester ring stirrer which has fully and uniform mixing, a large film-forming area, can retain materials without material accumulation, can easily diffuse and release small molecular byproducts, has a simple structural design and is easy to manufacture, is easy to clean and maintain, and has high practical value; a method for manufacturing a continuous polyester ring stirrer which adopts "double-zone partitioned concentric feeding", has regular welding, is durable and reliable, can complete the entire stirrer processing and molding by only one manufacturing equipment, and has high production efficiency; and a high-viscosity polymerization reactor using the stirrer. Background Art

[0002] A horizontal polymerization reactor is a closed container placed horizontally for realizing the polymerization reaction process. This reactor is widely used in the production of polymer materials, such as plastics, rubber and other polymers. The horizontal polymerization reactor mainly includes a shell sealed at both ends, with an agitator inside, which is connected by a transmission device. The polymer melt enters the inner cavity of the reactor from the material inlet. Driven by the transmission device, the melt is lifted by the agitator and forms a film in the process of rising and falling. Then, in the high vacuum environment of the gas phase outlet, a polymerization reaction occurs. Low molecular substances, alcohol reaction products and other small molecular by-products are extracted from the gas phase outlet. The molecular chain of the polymer increases, the degree of polymerization increases, and the characteristic viscosity of the melt also increases. Under the action of its own weight and the melt pump, the high viscosity material is discharged from the material outlet.

[0003] The agitator is one of the core components of a horizontal polymerization reactor. The Chinese patent document with patent application number 2003201202525 discloses a continuous polyester squirrel cage agitator, which is applied to a horizontal polymerization reactor and mainly includes "a squirrel cage frame composed of a support tube and two flower plates, two short shafts respectively connected to the outer ends of the two flower plates, a number of moving discs arranged between the two flower plates, each moving disc has evenly distributed through holes, a vent hole is opened at the center, and connecting holes are evenly distributed around the circumference. The moving disc is arranged between the two flower plates through the connecting holes and the support tube, and a shaft sleeve is arranged between adjacent moving discs, the shaft sleeve is sleeved on the support tube, and the shaft sleeves are lengthened one by one from one end to the other end. At least one support ring is arranged on the squirrel cage frame, and a through hole matching the diameter of the support tube is opened in the circumference of the support ring, which is sleeved on the support tube through the through hole and fixed by welding." This traditional squirrel cage agitator has a complex structural design, high difficulty in production and manufacturing, and is difficult to clean and maintain in the later stage, and has high maintenance costs.

[0004] Designing a continuous polyester agitator with a simple structure, easy to clean and maintain, and the agitator must have good film-forming effect and easy diffusion of small molecule by-products; at the same time, developing an efficient and reliable manufacturing method for this new product is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The purpose of the present invention is to provide a continuous polyester ring agitator with fully uniform mixing, large film-forming area, material retention without material accumulation, easy diffusion and release of small molecular byproducts, simple structural design, easy manufacturing, easy cleaning and maintenance, and high practical value, and a method for manufacturing a continuous polyester ring agitator which adopts "double-zone partitioned concentric feeding", has regular welding, is durable and reliable, can complete the processing and molding of the entire agitator by only one manufacturing equipment, and has high production efficiency, as well as a high-viscosity polymerization reactor using the agitator.

[0006] The present invention is achieved through the following technical solutions: A continuous polyester ring stirrer comprises a grid cylinder with a plurality of film-hanging holes, and a plurality of circular ring pieces distributed at intervals are fixedly arranged on the inner wall of the grid cylinder; The first annular sheet located at the low-viscosity end D of the grid cylinder is a perforated annular sheet, and a plurality of material passing holes are provided on the perforated annular sheet for circulating materials; a plurality of retention annular sheets for blocking materials are sequentially arranged on the inner wall of the grid cylinder from the perforated annular sheet toward the high-viscosity end G of the grid cylinder; A low-viscosity end D of the grid cylinder is fixedly installed with a low-viscosity end plate assembly, and a high-viscosity end G of the grid cylinder is fixedly installed with a high-viscosity end plate assembly.

[0007] Preferably, the retention annular sheet and the perforated annular sheet are both concentric with the grid cylinder; The film-hanging holes are rectangular in shape, and a plurality of film-hanging holes are regularly arranged at equal intervals along the circumference and axial direction of the grid cylinder; each circle of film-hanging hole groups formed by a plurality of film-hanging holes in the circumferential direction of the grid cylinder is a circumferential film-hanging circle, the area between two adjacent circumferential film-hanging circles is a cylinder rib, and the annular sheet is fixed in the middle position of the cylinder rib.

[0008] Preferably, the width of the cylinder rib is 2.5-3.5 times the thickness of the annular sheet.

[0009] A method for manufacturing the above-mentioned continuous polyester ring agitator comprises the following steps: Step 1: Prepare in advance a grid cylinder, a low-viscosity end plate assembly, a high-viscosity end plate assembly, and a circular ring sheet for use, and a rectangular film-hanging hole is opened on the grid cylinder; Step 2: Use a lifting device to place the grid cylinder on a load-bearing support platform; both sides of the load-bearing support platform are provided with a turntable feeding mechanism for conveying parts; the one located on the high-viscosity end G side of the grid cylinder is a high-viscosity turntable feeding mechanism, and the one located on the low-viscosity end D side of the grid cylinder is a low-viscosity turntable feeding mechanism; the central axes of the annular pieces conveyed by the high-viscosity turntable feeding mechanism and the low-viscosity turntable feeding mechanism are both in line with the central axis of the grid cylinder; Step 3: convey and weld the annular pieces from the middle to both sides; the high-viscosity turntable feeding mechanism conveys the annular pieces located in the high-viscosity area in the direction from the center line H to the high-viscosity end G in sequence; the low-viscosity turntable feeding mechanism conveys the annular pieces located in the low-viscosity area in the direction from the center line H to the low-viscosity end D in sequence; each time a piece of annular piece is conveyed, a piece of annular piece is welded; Step 4: After all the circular rings are welded, weld the high-viscosity end plate assembly and the low-viscosity end plate assembly.

[0010] Preferably, the conveying position of the circular ring piece is determined by a free positioner; The free locator comprises a locator body with a guide cone head fixed at the head and a reference positioning ring fixed at the tail, an eccentric wheel fixed to the locator body and an anti-rotation block with equal length and width are provided in sequence at the tail end of the guide cone head; in the width direction of the film hanging hole, the anti-rotation block and the film hanging hole are gap-matched; a limit movable ring movably sleeved on the locator body is also provided between the anti-rotation block and the reference positioning ring, and a tensioning spring is provided between the limit movable ring and the reference positioning ring.

[0011] Preferably, the positioner body is also provided with a handle for easy gripping; when the handle is in a horizontal position, the eccentric wheel is in a vertical state, and the anti-rotation block is in an upright state.

[0012] Preferably, the high-viscosity turntable feeding mechanism and the low-viscosity turntable feeding mechanism adopt the same structural design, which includes a jaw chuck, a supporting cross beam fixed integrally with the jaw chuck, and a supporting vertical beam that plays a supporting role. A circular ring positioning platform that is concentric with the jaw chuck is fixedly provided on the disk edge of the jaw chuck; the circular ring positioning platform includes a magnetic reference ring body inlaid with a plurality of attractive magnets at intervals in the circumferential direction, and a supporting flange located in the inner circle of the magnetic reference ring body and protruding from the surface of the magnetic reference ring body, and the diameter of the magnetic reference ring body is smaller than the diameter of the circular ring sheet.

[0013] Preferably, the load-bearing support platform is supported on the bearing surface, and the high-viscosity turntable feeding mechanism and the low-viscosity turntable feeding mechanism both use a ball screw mechanism to reciprocate on the bearing surface; the ball screw mechanism includes a driving motor and a transmission screw, and the transmission screw is threadedly connected to a feeding base provided with a roller trolley, and the roller trolley slides along a guide groove opened on the bearing surface, and the feeding base is fixedly connected to the supporting vertical beam.

[0014] Preferably, the supporting surface of the load-bearing support platform is an arc-shaped surface adapted to the grid cylinder, and the axial edge of the load-bearing support platform is provided with a movable clamping hand that is convenient for the grid cylinder to be accommodated on the arc-shaped surface; the movable clamping hand swings in the movable groove via the connecting shaft, and is limited by a limit strip fixed on the inner wall of the movable groove.

[0015] A high viscosity polymerization reactor using the above continuous polyester ring agitator.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The circular ring piece and the matrix-distributed film-forming holes of the present invention work together to achieve the functional effect of polymer melt retention without material accumulation; the circular ring piece creates a retention zone for the melt, increases the residence time of the melt, provides sufficient time for the orientation and arrangement of polymer molecular chains, is conducive to promoting the diffusion and escape of small molecule byproducts, and the polymer melt in the retention zone will not form a "dead zone". During the continuous rotation of the agitator, the melt in the retention zone will be continuously sheared and renewed by the film-forming holes near the circular ring piece, and the mixing is fully and evenly mixed, further promoting the rapid diffusion and escape of small molecule byproducts; in addition, the inner ring of the circular ring piece of the present invention provides a fast channel for small molecule byproducts to flow to the gas phase outlet of the reactor, accelerates the volatilization process of small molecules, and has high polymerization reaction efficiency.

[0017] 2. The film forming area of ​​the present invention is large and the film forming effect is good; the film forming holes distributed in a matrix can ensure that the polymer melt is uniformly formed on the cylinder, and the uniform film thickness is beneficial to heat exchange during the reaction process, maintaining uniform temperature, further facilitating the diffusion and release of small molecules, and further improving the polymerization reaction efficiency.

[0018] 3. The agitator structure of the present invention is simple, ingenious, practical, easy to manufacture, and easy to clean and maintain later, effectively reducing the later maintenance cost of the high-viscosity polymerization reactor.

[0019] 4. The method of the present invention has high production efficiency, and the produced agitator is reliable and durable; it adopts the "double-zone partitioned concentric feeding" production and manufacturing method, that is, by arranging turntable feeding mechanisms on both sides of the grid cylinder, with the center line H as the boundary, the two turntable feeding mechanisms are respectively responsible for the circular ring pieces in half of the agitator area. The agitator is large in size and long in size, and it is difficult to feed in a single direction. The manufacturing method of the present invention effectively reduces the manufacturing difficulty of the ring agitator.

[0020] 5. The free positioner structure design of the present invention is ingenious and practical. The free positioner fully combines the structural characteristics of the grid cylinder to achieve accurate positioning of the annular piece at a very low cost, effectively reducing the personalized demand for large and complex robotic arms, thereby reducing the cost of equipment customization and creating considerable economic benefits for the enterprise.

[0021] 6. The structure design of the turntable feeding mechanism of the present invention is unique. On the one hand, it can ensure that the annular sheet and the grid cylinder always maintain a concentric state. This design keeps the distance between the annular sheet and the inner wall of the grid cylinder symmetrical, thereby achieving uniform heat distribution during the welding process, ensuring the regularity of the weld, and significantly improving the reliability of the welding quality. On the other hand, the turntable feeding mechanism of the present invention can not only convey the annular sheet concentrically, but also convey the end plate assembly concentrically. The equipment has strong versatility and flexibility, and the processing and forming of the entire agitator can be completed on one manufacturing device.

[0022] 7. The present invention has broad application prospects in the technical field of high-viscosity polymerization reactors, and is of great significance for improving the quality of the entire high-viscosity polymerization reactor and simplifying the subsequent maintenance of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the agitator of the present invention when viewed from the front.

[0024] Figure 2 The present invention Figure 1 Schematic diagram of the cross-sectional structure along line AA.

[0025] Figure 3 The three-dimensional structure of the stirrer of the present invention is shown in FIG. Figure 1 .

[0026] Figure 4 The three-dimensional structure of the stirrer of the present invention is shown in FIG. Figure 2 .

[0027] Figure 5 It is a schematic diagram of the co-centric welding structure of the agitator annular piece and the grid cylinder of the present invention (the retention annular piece is taken as an example in the figure).

[0028] Figure 6 It is a schematic diagram of the welding structure of the agitator annular piece and the grid cylinder with different centers of circles (the retention annular piece is taken as an example in the figure).

[0029] Figure 7 It is a schematic diagram of the structure of the production equipment to which the agitator manufacturing method of the present invention is applied.

[0030] Figure 8 The present invention Figure 7 Enlarged view of part B1.

[0031] Fig. 9 The present invention Figure 7 Enlarged view of part B2.

[0032] Fig.10 The present invention Figure 7 Enlarged view of part B3.

[0033] Fig.11 The present invention Fig.10 Schematic diagram of the structure after the accordion cover is hidden.

[0034] Fig.12 It is a schematic diagram of the structure of the free positioner of the present invention.

[0035] Fig.13 It is a schematic diagram of the three-dimensional directional structure of the free positioner of the present invention.

[0036] Fig.14It is a schematic diagram of the assembly structure of the free positioner and the grid cylinder of the present invention.

[0037] Fig.15 It is a schematic diagram of the manufacturing scene structure of the present invention when conveying circular ring sheets.

[0038] Fig.16 It is a structural schematic diagram of the manufacturing scene of the present invention when conveying the end plate assembly.

[0039] In the figure: 11, grid cylinder; 111, film hanging hole; 112, retention ring plate; 113, perforated ring plate; 1131, feeding hole; 114, low viscosity end plate assembly; 1141, low viscosity end plate; 1142, short axis; 115, high viscosity end plate assembly; 1151, high viscosity end plate; 1152, long axis; 116, circumferential film hanging ring; 117, welding layer; 118, cylinder ribs; 21, load-bearing support platform; 211, arc surface; 212, movable clamping hand; 2121, wear-resistant rubber pad; 213, connecting shaft; 214, movable groove; 215, limit strip; 22, high viscosity turntable feeding mechanism; 221, clamping claw chuck; 2211, disk edge; 222, supporting beam ; 223, supporting vertical beam; 224, feeding base; 225, connecting claw; 226, circular ring positioning platform; 2261, attraction magnet; 2262, magnetic reference ring body; 2263, supporting flange; 23, low-viscosity turntable feeding mechanism; 25, bearing surface; 251, guide slide; 252, accordion cover; 26, ball screw mechanism; 261, driving motor; 262, transmission screw; 263, roller trolley; 27, climbing ladder; 28, free positioner; 281, positioner body; 2811, handle; 2812, guide cone head; 2813, reference positioning ring; 282, eccentric wheel; 283, anti-rotation block; 284, limit movable ring; 285, tension spring. DETAILED DESCRIPTION

[0040] In order to enable readers to better understand the design purpose of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, and they should not and should not be regarded as limiting the scope of protection or technical solutions of the present invention. Their purpose is only to facilitate those skilled in the art to better understand the technical solutions created by the present invention.

[0041] In the description of this specification, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances combined with the common knowledge, design specifications, standard documents, etc. in this field.

[0042] Example 1

[0043] like Figures 1 to 5 As shown, the present embodiment provides a continuous polyester ring agitator, which mainly includes a grid cylinder 11 with a plurality of film hanging holes 111, and a plurality of circular ring pieces distributed at intervals are fixedly provided on the inner wall of the grid cylinder 11, and the circular ring pieces are fixed to the inner wall of the grid cylinder 11 by welding; wherein the first circular ring piece located at the low-viscosity end D of the grid cylinder 11 is a perforated circular ring piece 113, and a plurality of material passing holes 1131 for circulating materials are provided on the perforated circular ring piece 113; a plurality of retention circular ring pieces 112 for blocking materials are sequentially provided on the inner wall of the grid cylinder 11 from the perforated circular ring piece 113 toward the high-viscosity end G of the grid cylinder 11. The low viscosity end D of the grid cylinder 11 is fixedly installed with a low viscosity end plate assembly 114, and the high viscosity end G of the grid cylinder 11 is fixedly installed with a high viscosity end plate assembly 115; wherein, the low viscosity end plate assembly 114 includes a low viscosity end plate 1141 and a short axis 1142; the high viscosity end plate assembly 115 includes a high viscosity end plate 1151 and a long axis 1152. The area from the low viscosity end D of the grid cylinder 11 to the center line H can be understood as a low viscosity area, and the area from the center line H to the high viscosity end G of the grid cylinder 11 can be understood as a high viscosity area. The polymer melt just entering from the feed port of the high viscosity polymerization reactor has very low viscosity and good fluidity; materials with high viscosity need to rely on flipping to pass the material, while materials with low viscosity can be directly passed while flipping the material, so in this embodiment, the first annular sheet is designed as a perforated annular sheet 113 to speed up the overall reaction process.

[0044] The circular rings and the film-forming holes distributed in the matrix work together to achieve the functional effect of polymer melt retention without material accumulation. The circular rings create a retention zone for the melt, increase the residence time of the melt, provide sufficient time for the orientation and arrangement of the polymer molecular chains, and promote the diffusion and escape of small molecular by-products. In addition, the polymer melt in the retention zone will not form a "dead zone". During the continuous rotation of the agitator, the melt in the retention zone will be continuously sheared and renewed by the film-forming holes near the circular rings, and the mixture will be fully and evenly mixed, further promoting the rapid diffusion and escape of small molecular by-products.

[0045] This embodiment has a large film-forming area and a good film-forming effect. Specifically, 1. The film-forming holes distributed in a matrix can ensure that the polymer melt is uniformly filmed on the cylinder, and the uniform film thickness is conducive to heat exchange during the reaction process, maintaining uniform temperature, and further promoting the diffusion and escape of small molecules, and the polymerization reaction efficiency is high; 2. The annular sheet makes the polymer melt also form a film during the rising and falling process, and the inner circle of the annular sheet provides a fast channel for the small molecule by-products to flow to the gas phase outlet of the reactor, effectively promoting the volatilization process of small molecules and further improving the polymerization reaction efficiency. In this way, from the low viscosity end D to the high viscosity end G, the viscosity of the polymer melt becomes greater and greater.

[0046] The agitator structure of the present embodiment is simple, ingenious, practical, easy to manufacture, and easy to clean and maintain later, thus effectively reducing the cost of later maintenance of the high-viscosity polymerization reactor.

[0047] In this embodiment, the retention annular plate 112 and the perforated annular plate 113 are both concentric with the grid cylinder 11; the film-forming holes 111 are rectangular, and a plurality of film-forming holes 111 are regularly arranged at equal intervals along the circumference and axial direction of the grid cylinder 11; each circle of film-forming holes formed by a plurality of film-forming holes 111 in the circumferential direction of the grid cylinder 11 is a circumferential film-forming circle 116, and the area between two adjacent circumferential film-forming circles 116 is a cylinder rib 118, and the annular plate is fixed in the middle of the cylinder rib 118. This structural design is evenly stressed, and the agitator is stable and durable. Figure 5 , Figure 6 Further analysis, Figure 5 The diagram shows the welding structure of the agitator ring and the grid cylinder. Figure 6 What is shown is a schematic diagram of the welding structure if the circular ring and the grid cylinder have different centers. Figure 5 and Figure 6 By comparison, it can be found that the concentric position can make the welding layer 117 regular, and the regular welding layer 117 is evenly stressed, which can effectively improve the durability and reliability of the agitator.

[0048] The width of the cylinder rib 118 in this embodiment is 2.5-3.5 times the thickness of the annular sheet. Such a design is intended to facilitate welding processing by workers and avoid the appearance of a "dead zone" of flowing materials.

[0049] Example 2

[0050] Taking the continuous polyester ring stirrer described in Example 1 as an example, this embodiment provides a method for manufacturing a continuous polyester ring stirrer, combining Figures 7 to 16 , which includes the following steps: A method for manufacturing a continuous polyester ring agitator comprises the following steps: Step 1: Prepare the grid cylinder 11, the low-viscosity end plate assembly 114, the high-viscosity end plate assembly 115, and the annular sheet in advance for use. The grid cylinder 11 is provided with rectangular film-hanging holes 111.

[0051] Step 2: Use a lifting device to place the grid cylinder 11 on the load-bearing support platform 21; both sides of the load-bearing support platform 21 are provided with a turntable feeding mechanism for conveying parts; the high-viscosity turntable feeding mechanism 22 is located on the high-viscosity end G side of the grid cylinder 11, and the low-viscosity turntable feeding mechanism 23 is located on the low-viscosity end D side of the grid cylinder 11. The central axes of the annular pieces conveyed by the high-viscosity turntable feeding mechanism 22 and the low-viscosity turntable feeding mechanism 23 are both collinear with the central axis of the grid cylinder 11.

[0052] Step 3: convey and weld the annular pieces from the middle to both sides; the high-viscosity turntable feeding mechanism 22 conveys the annular pieces located in the high-viscosity area in the direction from the center line H to the high-viscosity end G in sequence; the low-viscosity turntable feeding mechanism 23 conveys the annular pieces located in the low-viscosity area in the direction from the center line H to the low-viscosity end D in sequence; each time a piece of annular piece is conveyed, a piece of annular piece is welded. Of course, welding is generally performed by spot welding first, and after all the annular pieces are spot welded and fixed, each piece of annular piece is fully welded in sequence. The feeding process can be that the two turntable feeding mechanisms feed alternately, that is, the high-viscosity turntable feeding mechanism 22 (low-viscosity turntable feeding mechanism 23) conveys a piece of annular piece and spot welds it back to the initial position, then the low-viscosity turntable feeding mechanism 23 (high-viscosity turntable feeding mechanism 22) conveys a piece of annular piece and spot welds it back to the initial position, and then the high-viscosity turntable feeding mechanism 22 (low-viscosity turntable feeding mechanism 23) conveys the next piece of annular piece, and the two turntable feeding mechanisms feed alternately in this way. It can also be based on the area as the unit, and the other area will be transported after one area is completely delivered. That is, after the high-viscosity turntable feeding mechanism 22 (low-viscosity turntable feeding mechanism 23) has transported all the annular slices in the high-viscosity area (low-viscosity area), the low-viscosity turntable feeding mechanism 23 (high-viscosity turntable feeding mechanism 22) will then transport the annular slices in the low-viscosity area (high-viscosity area).

[0053] Step 4: After all the annular pieces are welded, weld the high-viscosity end plate assembly 115 and the low-viscosity end plate assembly 114. The high-viscosity turntable feeding mechanism 22 conveys the high-viscosity end plate assembly 115, and welds the high-viscosity end plate assembly 115 and the grid cylinder 11 together; the low-viscosity turntable feeding mechanism 23 conveys the low-viscosity end plate assembly 114, and welds the low-viscosity end plate assembly 114 and the grid cylinder 11 together. In this way, the continuous polyester ring agitator is formed.

[0054] In this embodiment, the welding work of the circular ring piece is performed by the operator drilling into the grid cylinder 11. In step 3, the conveying position of the circular ring piece is determined by the free positioner 28, and the welding operator inserts the free positioner 28 from the inside out. Fig.14As shown, the free positioner 28 specifically includes a positioner body 281 with a guide cone head 2812 fixed at the head and a reference positioning ring 2813 fixed at the tail. The tail end of the guide cone head 2812 is provided with an eccentric wheel 282 fixed to the positioner body 281 and an anti-rotation block 283 with equal length and width in sequence; in the width direction of the film-hanging hole 111, the anti-rotation block 283 is clearance-matched with the film-hanging hole 111; a limit movable ring 284 movably sleeved on the positioner body 281 is provided between the anti-rotation block 283 and the reference positioning ring 2813, and a tension spring 285 is provided between the limit movable ring 284 and the reference positioning ring 2813. The free positioner 28 makes full use of the shape characteristics of the film-hanging hole 111, the film-hanging hole 111 is rectangular, and the anti-rotation block 283 is a square block; the anti-rotation block 283 has equal length and width and is adapted to the width of the film-hanging hole 111, and its thickness is equivalent to the thickness of the grid cylinder 11.

[0055] Taking the circular sheet conveying high viscosity area as an example, the working principle of the free positioner 28 is introduced as follows: select any film hanging hole 111 on the first circumferential film hanging ring 116 on the right side (the side close to the center line H) of the cylinder rib 118 where the circular sheet is to be installed as the installation hole, and place the eccentric wheel 282 vertically. After the guide cone head 2812, the eccentric wheel 282, and the anti-rotation block 283 pass through the film hanging hole 111 in sequence, the free positioner 28 is pushed in the outer direction and is blocked by the limit movable ring 284. The tension spring 285 is compressed, and the free positioner 28 is continuously pushed. After the anti-rotation block 283 is completely drilled out of the film hanging hole 111, it rotates forward or reverse 90° and stops pushing the free positioner 28. At this time, the free positioner 28 will move in the opposite direction under the action of the tension spring 285. Since the anti-rotation block 283 is still in the upright state (i.e., the orthographic projection direction is not skewed) after rotating 90°, the anti-rotation block 283 will enter the film-hanging hole 111 until it is limited by the eccentric wheel 282. Under the joint action of the tension spring 285 and the eccentric wheel 282, the free positioner 28 is firmly fixed on the film-hanging hole 111. At this time, the reference positioning ring 2813 is one of the reference limit points of the annular piece. Insert 2 to 4 free positioners 28 on the circumferential film-hanging ring 116 where the free positioner 28 needs to be installed, generally two. The design of the anti-rotation block 283 has dual functions: first, it allows the operator to easily confirm whether it has been rotated to the 90-degree position by naked eyes, which simplifies the operation process and improves work efficiency. Secondly, when the anti-rotation block is inserted into the film-hanging hole, it can effectively prevent the free positioner from rotating relative to the film-hanging hole; if this rotation is not controlled, it may cause the free positioner to accidentally slip, which will affect the normal operation of production.

[0056] The feeding method based on zones is obviously superior to the alternating feeding method in terms of convenience of operation and rationality of the process. This embodiment further supplements the manufacturing method of the above-mentioned ring agitator by using the feeding method based on zones.

[0057] After the parts to be welded are prepared, the circular ring pieces located in the high viscosity area (low viscosity area) are sequentially conveyed in the direction from the center line H to the high viscosity end G (low viscosity end D). The high viscosity turntable feeding mechanism 22 (low viscosity turntable feeding mechanism 23) is started to convey the first circular ring piece in the middle of the high viscosity area (low viscosity area). Before the conveying arrives, the welding personnel insert the free positioner 28 into the corresponding film hanging hole 111 in advance to locate the position of the first circular ring piece. The high viscosity turntable feeding mechanism 22 (low viscosity turntable feeding mechanism 23) runs toward the center of the grid cylinder 11 until the first circular ring piece touches the reference positioning ring 2813 of the free positioner 28 and stops moving. After spot welding the first circular ring piece, the high viscosity turntable feeding mechanism 22 returns to the initial position, adsorbs and conveys the second circular ring piece, and so on until all circular ring pieces in the high viscosity area (low viscosity area) are spot welded. Then the low-viscosity turntable feeding mechanism 23 (high-viscosity turntable feeding mechanism 22) is started, and the action process is consistent with the high-viscosity turntable feeding mechanism 22 (low-viscosity turntable feeding mechanism 23), so it will not be repeated to avoid cumbersome text. After the spot welding is completed, all the annular pieces are fully welded, and then the low-viscosity end plate assembly 114 and the high-viscosity end plate assembly 115 are welded.

[0058] The agitator of the present embodiment has high production efficiency and reliable and durable quality. It adopts a "double-zone partitioned concentric feeding" production and manufacturing method, that is, by arranging turntable feeding mechanisms on both sides of the grid cylinder, with the center line H as the boundary, the two turntable feeding mechanisms are respectively responsible for the circular ring pieces in half of the agitator area; the agitator is large in size and long in size, and it is difficult to feed in a single direction. The manufacturing method of the present invention effectively reduces the manufacturing difficulty of the ring agitator.

[0059] The free positioner structure of this embodiment is cleverly designed, fully combining the structural characteristics of the grid cylinder to achieve accurate positioning of the annular piece at a very low cost, effectively reducing the personalized demand for large and complex robotic arms, thereby reducing the cost of equipment customization and creating considerable economic benefits for the enterprise.

[0060] This embodiment has broad application prospects in the technical field of high-viscosity polymerization reactors, and is of great significance for improving the quality of the entire high-viscosity polymerization reactor and simplifying the subsequent maintenance of the entire machine.

[0061] Example 3

[0062] On the basis of the above-mentioned embodiments, this embodiment continues to describe in detail the technical features involved therein and the functions and roles played by the technical features in the present invention, so as to help technicians in this field to fully understand the technical solution of the present invention and reproduce it.

[0063] like Figures 7 to 16As shown, the high-viscosity turntable feeding mechanism 22 and the low-viscosity turntable feeding mechanism 23 of this embodiment adopt the same structural design, which includes a clamping claw chuck 221, a supporting crossbeam 222 fixed integrally with the clamping claw chuck 221, and a supporting vertical beam 223 for supporting. A circular ring positioning platform 226 cocentric with the clamping claw chuck 221 is fixedly provided on the disc edge 2211 of the clamping claw chuck 221, and the circular ring positioning platform 226 is fixedly connected to the disc edge 2211 through connecting claws 225 regularly distributed on the disc edge 2211 in the circumferential direction. The circular ring positioning platform 226 includes a magnetic reference ring body 2262 inlaid with a plurality of attracting magnets 2261 at intervals in the circumferential direction, and a supporting flange 2263 located in the inner circle of the magnetic reference ring body 2262 and protruding from the surface of the magnetic reference ring body 2262, and the diameter of the magnetic reference ring body 2262 is smaller than the diameter of the circular ring sheet. The diameter of the magnetic reference ring body 2262 is smaller than the diameter of the circular ring piece, so as to facilitate the subsequent spot welding fixation of the circular ring piece and the inner wall of the grid cylinder 11. The structural design of the turntable feeding mechanism is simple and ingenious. The circular ring piece is loaded manually or by an existing small manipulator. The inner diameter of the circular ring piece is equivalent to the outer diameter of the supporting flange 2263. The circular ring piece is placed in contact with the magnetic reference ring body 2262 and is fixed by the attraction magnet 2261 on the magnetic reference ring body 2262. The magnetic reference ring body 2262 can firmly attract the circular ring piece, and the circular ring piece runs stably and can maintain a concentric position relationship with the grid cylinder 11, laying a good foundation for the subsequent regular welding of the circular ring piece. In addition, due to the stable attraction, there is no need to worry about the circular ring piece slipping during operation, so the supporting flange 2263 can support the circular ring piece, and the axial direction does not need to be too long, so that the movement stroke of the circular ring piece in the direction of the magnetic reference ring body 2262 can be shortened, thereby simplifying the feeding process of the circular ring piece.

[0064] The turntable feeding mechanism of this embodiment can not only convey the annular sheet concentrically, but also convey the end plate assembly concentrically. The clamping of the end plate assembly is mainly achieved by the clamping claw chuck 221 of the turntable feeding mechanism. The clamping claw chuck 221 of the high-viscosity turntable feeding mechanism 22 is used to fix the high-viscosity end plate assembly 115, and the clamping claw chuck 221 of the low-viscosity turntable feeding mechanism 23 is used to fix the low-viscosity end plate assembly 114. The clamping claw chuck 221 is only used to clamp the end plate assembly, and the clamped workpiece is fixed and unchanged, so the clamping claw stroke on the clamping claw chuck 221 does not change much, and the upper and lower end plate assemblies only need to fine-tune the adjustment knob of the clamping claw chuck 221, which is convenient and quick to operate. The turntable feeding mechanism of this embodiment has a unique structural design. On the one hand, it can ensure that the annular sheet and the grid cylinder always maintain a concentric state. This design keeps the spacing between the annular sheet and the inner wall of the grid cylinder symmetrical, thereby achieving uniform heat distribution during welding, ensuring the regularity of the weld, and significantly improving the reliability of welding quality. On the other hand, the turntable feeding mechanism of the present invention can not only coaxially convey the annular sheets, but also coaxially convey the end plate components. The equipment has strong versatility and flexibility, and the processing and forming of the entire agitator can be completed on one manufacturing equipment.

[0065] The load-bearing support platform 21 of this embodiment is supported on the bearing surface 25, and the high-viscosity turntable feeding mechanism 22 and the low-viscosity turntable feeding mechanism 23 both use a ball screw mechanism 26 to reciprocate on the bearing surface 25; the ball screw mechanism 26 includes a driving motor 261 and a transmission screw 262, and the transmission screw 262 is threadedly connected to a feeding base 224 provided with a roller trolley 263, and the roller trolley 263 slides along a guide slide groove 251 provided on the bearing surface 25, and the feeding base 224 is fixedly connected to the supporting vertical beam 223. The ball screw mechanism 26 has a simple structural design, is easy to manufacture, and has stable operation. The transmission screw 262 is provided with an accordion cover 252 for protection.

[0066] The supporting surface of the load-bearing support platform 21 of this embodiment is an arc-shaped surface 211 adapted to the grid cylinder 11, and the axial edge of the load-bearing support platform 21 is provided with a movable gripper 212 for accommodating the grid cylinder 11 on the arc-shaped surface 211; the movable gripper 212 swings in the movable groove 214 via the connecting shaft 213, and is limited by a limiting strip 215 fixed on the inner wall of the movable groove 214. This structural design is intended to accelerate the process of placing the grid cylinder on the arc-shaped surface and ensure the efficiency of the operation. The adaptive adjustment function of the movable gripper plays a good guiding role in correctly guiding the grid cylinder to fall onto the arc-shaped surface of the load-bearing support platform. A wear-resistant rubber pad 2121 is also fixed on the surface of the movable gripper 212 to enhance friction.

[0067] To facilitate practical operation, in this embodiment, ladders 27 are provided on the bearing surfaces 25 on both sides of the grid cylinder 11 for easy operation.

[0068] The positioner body 281 of this embodiment is also provided with a handle 2811 for easy gripping; when the handle 2811 is in a horizontal position, the eccentric wheel 282 is in a vertical position, and the anti-rotation block 283 is in a normal position. The position design of the handle 2811, the eccentric wheel 282, and the anti-rotation block 283 focuses on the gripping posture of the operator to achieve a more comfortable and humanized experience.

[0069] Example 4

[0070] This embodiment provides a high-viscosity polymerization reactor, which uses the continuous polyester ring agitator described in any of the above embodiments.

[0071] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, characteristics and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A continuous polyester ring agitator, characterized in that: It comprises a grid cylinder (11) provided with a plurality of film-hanging holes (111), wherein a plurality of circular ring pieces distributed at intervals are fixedly provided on the inner wall of the grid cylinder (11); The first annular sheet located at the low-viscosity end D of the grid cylinder (11) is a perforated annular sheet (113), and a plurality of material passing holes (1131) for circulating materials are provided on the perforated annular sheet (113); a plurality of retention annular sheets (112) for blocking materials are sequentially arranged on the inner wall of the grid cylinder (11) from the perforated annular sheet (113) toward the high-viscosity end G of the grid cylinder (11); A low-viscosity end plate assembly (114) is fixedly mounted on the low-viscosity end D of the grid cylinder (11), and a high-viscosity end plate assembly (115) is fixedly mounted on the high-viscosity end G of the grid cylinder (11).

2. The continuous polyester ring agitator according to claim 1, characterized in that: The retention annular sheet (112) and the perforated annular sheet (113) are both cocentric with the grid cylinder (11); The film-hanging holes (111) are rectangular in shape, and a plurality of the film-hanging holes (111) are regularly arranged at equal intervals in the circumferential and axial directions of the grid cylinder (11); each circle of film-hanging hole groups formed by the plurality of film-hanging holes (111) in the circumferential direction of the grid cylinder (11) is a circumferential film-hanging circle (116), and the area between two adjacent circumferential film-hanging circles (116) is a cylinder rib (118), and the annular sheet is fixed at the middle position of the cylinder rib (118).

3. The continuous polyester ring agitator according to claim 2, characterized in that: The width of the cylindrical rib (118) is 2.5-3.5 times the thickness of the circular ring sheet.

4. A method for manufacturing a continuous polyester ring agitator according to any one of claims 1 to 3, characterized in that: The following steps are included: Step 1: Prepare in advance a grid cylinder (11), a low-viscosity end plate assembly (114), a high-viscosity end plate assembly (115), and a circular ring sheet for use, and a rectangular film-hanging hole (111) is opened on the grid cylinder (11); Step 2: Using a lifting device, place the grid cylinder (11) on a load-bearing support platform (21); both sides of the load-bearing support platform (21) are provided with a turntable feeding mechanism for conveying parts; the high-viscosity turntable feeding mechanism (22) is located on the high-viscosity end G side of the grid cylinder (11), and the low-viscosity turntable feeding mechanism (23) is located on the low-viscosity end D side of the grid cylinder (11); the central axes of the annular pieces conveyed by the high-viscosity turntable feeding mechanism (22) and the low-viscosity turntable feeding mechanism (23) are both in line with the central axis of the grid cylinder (11); Step 3: conveying and welding the annular pieces from the middle to both sides; the high-viscosity turntable feeding mechanism (22) conveys the annular pieces located in the high-viscosity area in sequence from the center line H to the high-viscosity end G; the low-viscosity turntable feeding mechanism (23) conveys the annular pieces located in the low-viscosity area in sequence from the center line H to the low-viscosity end D; each time a piece of annular piece is conveyed, a piece of annular piece is welded; Step 4: After all the annular pieces are welded, the high-viscosity end plate assembly (115) and the low-viscosity end plate assembly (114) are welded.

5. The method for manufacturing a continuous polyester ring agitator according to claim 4, characterized in that: The conveying position of the circular ring piece is determined by a free positioner (28); The free positioner (28) comprises a positioner body (281) having a guide cone head (2812) fixedly provided at the head and a reference positioning ring (2813) fixedly provided at the tail; an eccentric wheel (282) fixedly provided with the positioner body (281) and an anti-rotation block (283) having equal length and width are provided in sequence at the tail end of the guide cone head (2812); the anti-rotation block (283) and the film hanging hole (111) are clearance-matched in the width direction of the film hanging hole (111); a limit movable ring (284) movably sleeved on the positioner body (281) is further provided between the anti-rotation block (283) and the reference positioning ring (2813); and a tension spring (285) is provided between the limit movable ring (284) and the reference positioning ring (2813).

6. The method for manufacturing a continuous polyester ring agitator according to claim 5, characterized in that: The positioner body (281) is also provided with a handle (2811) for easy gripping; when the handle (2811) is in a horizontal position, the eccentric wheel (282) is in a vertical state, and the anti-rotation block (283) is in a normal state.

7. The method for manufacturing a continuous polyester ring agitator according to claim 4, characterized in that: The high-viscosity turntable feeding mechanism (22) and the low-viscosity turntable feeding mechanism (23) adopt the same structural design, and include a clamping jaw chuck (221), a supporting crossbeam (222) fixedly integrated with the clamping jaw chuck (221), and a supporting vertical beam (223) that plays a supporting role. A circular ring positioning platform (226) that is coaxial with the clamping jaw chuck (221) is fixedly provided on the disc edge (2211) of the clamping jaw chuck (221); the circular ring positioning platform (226) includes a magnetic reference ring body (2262) inlaid with a plurality of attracting magnets (2261) at intervals in the circumferential direction, and a supporting flange (2263) located in the inner circle of the magnetic reference ring body (2262) and protruding from the surface of the magnetic reference ring body (2262), and the diameter of the magnetic reference ring body (2262) is smaller than the diameter of the circular ring sheet.

8. The method for manufacturing a continuous polyester ring agitator according to claim 7, characterized in that: The load-bearing support platform (21) is supported on a bearing surface (25), and the high-viscosity turntable feeding mechanism (22) and the low-viscosity turntable feeding mechanism (23) both use a ball screw mechanism (26) to reciprocate on the bearing surface (25); the ball screw mechanism (26) comprises a driving motor (261) and a transmission screw (262), the transmission screw (262) is threadedly connected to a feeding base (224) provided with a roller trolley (263), the roller trolley (263) slides along a guide groove (251) provided on the bearing surface (25), and the feeding base (224) is fixedly connected to the supporting vertical beam (223).

9. The method for manufacturing a continuous polyester ring agitator according to claim 4, characterized in that: The supporting surface of the load-bearing support platform (21) is an arcuate surface (211) adapted to the grid cylinder (11), and an axial edge of the load-bearing support platform (21) is provided with a movable gripper (212) for accommodating the grid cylinder (11) on the arcuate surface (211); the movable gripper (212) swings in the movable groove (214) via a connecting shaft (213) and is limited by a limit strip (215) fixed on the inner wall of the movable groove (214).

10. A high viscosity polymerization reactor using the continuous polyester ring agitator according to any one of claims 1 to 9.

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