Flexible processing system and technology for preparing polyether polyols of various specifications

Abstract

This invention discloses a flexible processing system and process for preparing polyether polyols of various specifications. The invention relates to the field of polyether polyol processing and preparation technology. This flexible processing system and process for preparing polyether polyols of various specifications utilizes an automatic batching structure and drive assembly. The drive assembly rotates and cyclically pushes the lifting assembly upwards, thereby using a piston to expel the polyether polyol raw material from inside the measuring cylinder. Simultaneously, the piston returns to its original position, quantitatively drawing in the external polyether polyol raw material, achieving the goal of quantitatively obtaining polyether polyol raw material. Compared to the traditional manual batching method, this invention has the advantages of high automation, fast batching speed, and high production efficiency. Multiple automatic batching mechanisms can be individually set with different raw material acquisition ranges, ensuring that the amount of polyether polyol raw material acquired by each automatic batching mechanism corresponds to the batching ratio, thus improving the practicality of the automatic batching mechanism.

Description

Technical Field

[0001] This invention relates to the field of polyether polyol processing and preparation technology, specifically to a flexible processing system and process for preparing polyether polyols of various specifications. Background Technology

[0002] Polyether polyols (referred to as polyethers) are produced by addition polymerization of initiators (compounds containing active hydrogen groups) with ethylene oxide (EO), propylene oxide (PO), butane oxide (BO), etc., in the presence of a catalyst. Various general-purpose polyether polyols can be produced by changing the feeding method (mixed or separate addition), the addition ratio, and the order of addition of PO and EO. Currently, the preparation process of polyether polyols mostly utilizes weighing equipment to weigh each reactant separately according to the proportions before injecting them into the reaction vessel for mixing. This manual weighing method not only easily leads to uneven proportions of reactants, making it impossible to accurately control the properties of the resulting polyether polyol product, but also results in slow addition of reactants, leading to low automation and efficiency in the processing, while increasing the labor intensity of workers. Therefore, this invention proposes a flexible processing system and process for preparing polyether polyols of various specifications to solve the above problems. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a flexible processing system and process for preparing polyether polyols of various specifications. This solves the problem that current polyether polyol preparation processes mostly rely on weighing equipment to separately weigh each reactant according to a ratio before injecting it into the reaction vessel for mixing. This manual weighing method not only easily leads to uneven proportions of reactants, making it impossible to accurately control the properties of the resulting polyether polyol product, but also results in slow addition of reactants, low automation, low efficiency, and increased labor intensity for workers.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a flexible processing system for preparing polyether polyols of various specifications, comprising a reactor, a protective cover on top of the reactor, and a ladder fixedly connected to the side wall of the reactor. A controller for controlling electrical equipment is fixedly installed on the outer wall of the reactor, and a mixing mechanism for stirring polyether polyol raw materials is rotatably installed inside the reactor. A support mechanism is provided above the protective cover, and multiple automatic batching mechanisms for proportioning polyether polyol raw materials are uniformly arranged inside the support mechanism. A servo motor for driving the mixing mechanism to rotate is fixedly installed on the top of the support mechanism and between the multiple automatic batching mechanisms. A drive assembly is fixedly sleeved on the outer wall of the output shaft of the servo motor and on top of the protective cover.

[0005] Preferably, the support mechanism includes two support rods arranged symmetrically on the left and right sides, and a bearing plate is fixedly sleeved on the upper and lower positions of the outer walls of the two support rods respectively, and the bottom end of the support rod is fixedly connected to the outer wall of the reactor.

[0006] Preferably, the mixing mechanism includes a drive shaft and a primary mixing assembly fixedly sleeved on the outer wall of the drive shaft. A plurality of stirring rods are uniformly arranged between the primary mixing assembly and the drive shaft. The top end of the stirring rod is fixedly connected to the bottom of the primary mixing assembly for conveying the polyether polyol raw material inside the primary mixing assembly to the reactor. The bottom end of the stirring rod is fixedly connected to the outer wall of the drive shaft, and through holes are uniformly opened on the outer wall of the stirring rod near the inner wall of the reactor. A plurality of transfer pipes for conveying polyether polyol raw material into the primary mixing assembly are uniformly arranged on the top of the primary mixing assembly.

[0007] Preferably, the primary mixing assembly includes a mixing cylinder, an annular groove formed at the top of the mixing cylinder, and a baffle plate uniformly fixedly connected inside the mixing cylinder, wherein an anti-overflow plate is rotatably connected inside the annular groove.

[0008] Preferably, the top end of the drive shaft is connected to the output shaft of the servo motor via a coupling, the bottom end of the transmission pipe passes through the anti-overflow plate and extends into the annular groove, and the mixing cylinder is fixedly sleeved on the outer wall of the drive shaft.

[0009] Preferably, the automatic dispensing mechanism includes a measuring cylinder, a sealing cap fixedly connected to the top of the measuring cylinder, and a guide cylinder bolted to the bottom of the measuring cylinder. An inlet pipe assembly and an outlet pipe assembly are respectively provided on both sides of the top of the sealing cap. The inlet pipe assembly includes an output pipe and a first one-way valve. The output pipe is fixedly connected to the top of the sealing cap, and the first one-way valve is fixedly connected inside the output pipe, allowing only the polyether polyol raw material to be discharged from the measuring cylinder. The outlet pipe assembly includes an inlet pipe and a second one-way valve. The inlet pipe is fixedly connected to the top of the sealing cap, and the second one-way valve is fixedly connected inside the inlet pipe, allowing only the polyether polyol raw material to flow into the measuring cylinder. A piston is slidably connected inside the measuring cylinder, and a measuring column is fixedly connected to the bottom of the piston. The bottom end of the measuring column slides through the guide cylinder and extends to the outside. A spring and a spring baffle are respectively sleeved on the outer wall of the measuring column and located inside the guide cylinder. The spring baffle is fixedly sleeved on the outer wall of the measuring column and located below the spring. A lifting assembly is sleeved on the outer wall of the measuring column and located below the guide cylinder.

[0010] Preferably, one end of the transmission pipe is connected to the output pipe, and one end of the input pipe is connected to the polyether polyol raw material storage tank.

[0011] Preferably, the lifting assembly includes a stop block, a mounting sleeve fixedly connected to the outer wall of the stop block, and grooves evenly formed on the side wall of the stop block. A roller is rotatably connected inside the groove. A first locking bolt is threadedly connected to the outer wall of the mounting sleeve. The mounting sleeve is slidably fitted onto the outer wall of the measuring column.

[0012] Preferably, the drive assembly includes a telescopic cylinder and a telescopic rod slidably connected inside the telescopic cylinder. A lifting block is fixedly connected to the top of the telescopic rod on the side away from the telescopic cylinder, and a second locking bolt is threaded onto the outer wall of the telescopic cylinder.

[0013] Preferably, the telescopic cylinder is fixedly sleeved on the outer wall of the servo motor output shaft, and the rotation radius of the lifting block is the same as the radius of the circle formed by the multiple stop blocks.

[0014] This invention also discloses a processing technology for a flexible multi-specification polyether polyol preparation system, the specific process including the following steps:

[0015] Step 1: Based on the types of polyether polyol raw materials corresponding to multiple automatic dispensing mechanisms, and according to the proportion of each raw material, set the amount of raw material automatically obtained so that the amount of polyether polyol raw material drawn each time is the same as the set value.

[0016] Step 2: Start the servo motor to drive the drive component to rotate at a constant speed in a directional manner. The drive component triggers the automatic batching mechanism to repeatedly suck up and extrude raw materials. The raw materials discharged from the automatic batching mechanism are transported to the mixing mechanism.

[0017] Step 3: After the mixing mechanism initially mixes the polyether polyol raw materials delivered to it, it uses centrifugal force to spray them into the reactor, and the mixing mechanism stirs and mixes the raw materials again.

[0018] Preferably, the reactor is equipped with a heating mechanism for heating the reaction process, and the temperature setting of the heating mechanism is controlled by a controller.

[0019] Beneficial effects

[0020] This invention provides a flexible processing system and process for preparing polyether polyols of various specifications. Compared with the prior art, it has the following advantages:

[0021] 1. A flexible processing system and technology for preparing polyether polyols of various specifications. A controller for controlling electrical equipment is fixedly installed on the outer wall of the reactor. Inside the reactor, a mixing mechanism for stirring the polyether polyol raw materials is rotating. A support mechanism is installed above the protective cover. Multiple automatic batching mechanisms for proportioning the polyether polyol raw materials are evenly arranged inside the support mechanism. A servo motor for driving the mixing mechanism is fixedly installed on the top of the support mechanism, between the automatic batching mechanisms. A drive assembly is fixedly sleeved on the outer wall of the servo motor's output shaft, on the top of the protective cover. This solves the problem that the current polyether polyol preparation process mostly relies on weighing equipment to weigh each reactant separately according to the proportion before injecting it into the reactor for mixing. Manual weighing not only easily leads to uneven proportions of reactants, making it impossible to accurately control the properties of the resulting polyether polyol product, but also results in slow manual weighing and addition of reactants, leading to low automation, low efficiency, and increased labor intensity for workers.

[0022] 2. A flexible processing system and process for preparing polyether polyols of various specifications. By setting up an automatic batching structure and driving components, the system can use the rotating driving components to push the lifting components upward in a cyclical manner, thereby achieving the purpose of squeezing out the polyether polyol raw materials inside the measuring cylinder using a piston. At the same time as the piston resets, it can quantitatively draw in the external polyether polyol raw materials, achieving the purpose of quantitatively obtaining polyether polyol raw materials. Compared with the traditional manual batching method, this invention has the advantages of high automation, fast batching speed, and high production efficiency.

[0023] 3. A flexible processing system and technology for preparing polyether polyols of various specifications: By setting multiple automatic batching mechanisms, the raw material acquisition range of each automatic batching mechanism can be set separately, so that the amount and proportion of polyether polyol raw material acquired by each automatic batching mechanism correspond to the amount and proportion of polyether polyol raw material acquired in a single batch, thereby achieving the purpose of quantitative and rapid acquisition of polyether polyol raw material; Secondly, by adjusting the height of the lifting component from the lifting block, the lifting component can be lifted to different heights during the rotation of the drive block, so that the piston has different stroke heights, that is, the piston has different ranges, which can be used to acquire different amounts of polyether polyol raw material, thereby improving the practicality of the automatic batching mechanism.

[0024] 4. A flexible processing system and process for preparing polyether polyols of various specifications: By setting up a drive component, the telescopic rod can slide relative to the telescopic cylinder, thereby providing power to the automatic batching mechanism during the batching process of polyether polyol raw materials. After batching, the telescopic rod can slide into the telescopic cylinder, so that the lifting block is away from the lifting component, avoiding contact between the lifting block and the lifting component, thus realizing flexible switching between batching mode and mixing mode, which facilitates the processing of polyether polyols.

[0025] 5. A flexible processing system and technology for preparing polyether polyols of various specifications: By setting up a mixing mechanism, the polyether polyol raw materials input by the automatic batching mechanism enter the primary mixing component under gravity, and then fall into the interior of multiple stirring rod chambers under gravity again. The centrifugal force generated by the rotation of the drive shaft can quickly throw out the polyether polyol raw materials entering the stirring rods, achieving the purpose of uniformly distributing the polyether polyols. This ensures that the polyether polyols are evenly distributed inside the reactor, facilitating the rapid mixing of various polyether polyol raw materials. Secondly, the baffles set inside the mixing cylinder can pre-stir the polyether polyol raw materials entering it, facilitating the rapid mixing of subsequent raw materials and thus accelerating the mixing of the remaining polyether polyol raw materials. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the assembled structure of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the exploded structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the mixing mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the exploded structure of the primary hybrid component of the present invention;

[0031] Figure 6 This is an enlarged structural diagram of part A of the present invention;

[0032] Figure 7 This is an exploded view of the automatic batching mechanism of the present invention;

[0033] Figure 8 This is an enlarged structural diagram of part B of the present invention;

[0034] Figure 9 This is a schematic cross-sectional view of the lifting component of the present invention;

[0035] Figure 10 This is an enlarged structural diagram of part C of the present invention;

[0036] Figure 11 This is a schematic diagram of the exploded structure of the driving component of the present invention.

[0037] In the diagram: 1. Reactor; 2. Protective cover; 3. Ladder; 4. Controller; 5. Mixing mechanism; 51. Drive shaft; 52. Primary mixing assembly; 521. Mixing cylinder; 522. Annular groove; 523. Baffle plate; 524. Overflow plate; 53. Stirring rod; 54. Through hole; 55. Transfer pipe; 6. Support mechanism; 61. Support rod; 62. Bearing plate; 7. Automatic batching mechanism; 71. Measuring cylinder; 72. Sealing cover; 73. Guide cylinder 74. Output pipe; 75. First check valve; 76. Input pipe; 77. Second check valve; 78. Piston; 79. Measuring column; 710. Spring; 711. Spring baffle; 712. Lifting assembly; 7121. Stop block; 7122. Mounting sleeve; 7123. Roller; 7124. First locking bolt; 8. Servo motor; 9. Drive assembly; 91. Telescopic cylinder; 92. Telescopic rod; 93. Lifting block; 94. Second locking bolt. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] This invention provides three technical solutions:

[0040] like Figure 1-3Figure 11 illustrates a first embodiment: a flexible processing system for preparing polyether polyols of various specifications, including a reactor 1, a protective cover 2 on top of the reactor 1, and a ladder 3 fixedly connected to the side wall of the reactor 1. The ladder 3 is used to facilitate manual adjustment of the output of the automatic batching mechanism 7. A discharge pipe for discharging polyether polyol products is fixedly installed at the bottom of the reactor 1. A controller 4 for controlling electrical equipment is fixedly installed on the outer wall of the reactor 1. A mixing mechanism 5 for stirring polyether polyol raw materials is rotatably installed inside the reactor 1. A support mechanism 6 is installed above the protective cover 2. Multiple automatic batching mechanisms 7 for proportioning polyether polyol raw materials are evenly arranged inside the support mechanism 6. A servo motor for driving the mixing mechanism 5 to rotate is fixedly installed on the top of the support mechanism 6 and located between the multiple automatic batching mechanisms 7. A drive assembly 9 is fixedly sleeved on the outer wall of the output shaft of the servo motor 8 and located on top of the protective cover 2. The drive assembly 9 includes a telescopic cylinder 91 and a telescopic rod 92 slidably connected inside the telescopic cylinder 91. A lifting block 93 is fixedly connected to the top of the telescopic rod 92 on the side away from the telescopic cylinder 91. A second locking bolt 94 is threadedly connected to the outer wall of the telescopic cylinder 91. The second locking bolt 94 is used to fix the telescopic rod 92 and the telescopic cylinder 91 together. The telescopic cylinder 91 is fixedly sleeved on the outer wall of the output shaft of the servo motor 8. The rotation radius of the lifting block 93 is the same as the radius of the circle formed by multiple stops 7121. The support mechanism 6 includes two support rods 61 arranged symmetrically on the left and right. A bearing plate 62 is fixedly sleeved on the upper and lower positions of the outer walls of the two support rods 61 respectively. The bottom end of the support rod 61 is fixedly connected to the outer wall of the reactor 1.

[0041] like Figure 4-6The second embodiment is shown, and its main difference from the first embodiment is that it is a flexible processing system for preparing polyether polyols of various specifications. The mixing mechanism 5 includes a drive shaft 51 and a primary mixing assembly 52 fixedly sleeved on the outer wall of the drive shaft 51. A plurality of stirring rods 53 are evenly arranged between the primary mixing assembly 52 and the drive shaft 51. The top end of the stirring rod 53 is fixedly connected to the bottom of the primary mixing assembly 52 for conveying the polyether polyol raw material inside the primary mixing assembly 52 to the reactor 1. The bottom end of the stirring rod 53 is fixedly connected to the outer wall of the drive shaft 51, and through holes 54 are evenly opened on the outer wall of the stirring rod 53 near the inner wall of the reactor 1. A plurality of through holes 54 are evenly arranged on the top of the primary mixing assembly 52. The primary mixing assembly 52 includes a mixing cylinder 521, an annular groove 522 at the top of the mixing cylinder 521, and a baffle plate 523 uniformly fixedly connected inside the mixing cylinder 521. An anti-overflow plate 524 is rotatably connected inside the annular groove 522. A guide ring is fixedly connected to the outer wall of the anti-overflow plate 524. A guide groove matching the structure of the guide ring is opened on the inner wall of the annular groove 522. The guide ring is slidably connected in the guide groove. The top end of the drive shaft 51 is connected to the output shaft of the servo motor 8 through a coupling. The bottom end of the transmission pipe 55 passes through the anti-overflow plate 524 and extends into the annular groove 522. The mixing cylinder 521 is fixedly sleeved on the outer wall of the drive shaft 51.

[0042] like Figure 7-10The third embodiment is shown, and its main difference from the second embodiment is that it is a flexible processing system for preparing polyether polyols of various specifications. The automatic dispensing mechanism 7 includes a measuring cylinder 71, a sealing cap 72 fixedly connected to the top of the measuring cylinder 71, and a guide cylinder 73 bolted to the bottom of the measuring cylinder 71. An inlet pipe assembly and an outlet pipe assembly are respectively provided on both sides of the top of the sealing cap 72. The inlet pipe assembly includes an outlet pipe 74 and a first one-way valve 75. The outlet pipe 74 is fixedly connected to the top of the sealing cap 72, and the first one-way valve 75 is fixedly connected inside the outlet pipe 74. To allow only polyether polyol raw materials to be discharged from the measuring cylinder 71, the discharge pipe assembly includes an inlet pipe 76 and a second one-way valve 77. The inlet pipe 76 is fixedly connected to the top of the sealing cap 72, and the second one-way valve 77 is fixedly connected inside the inlet pipe 76 to allow only polyether polyol raw materials to flow into the measuring cylinder 71. A piston 78 is slidably connected inside the measuring cylinder 71. The initial position of the piston 78 is that its top is in contact with the top of the cavity of the measuring cylinder 71. A measuring column 79 is fixedly connected to the bottom of the piston 78. The surface of the measuring column 79 is evenly marked with graduation lines for reference when adjusting the mounting sleeve 7122. The bottom end of the measuring column 79 slides through the guide cylinder 73 and extends to the outside. A spring 710 and a spring baffle 711 are respectively fitted on the outer wall of the measuring column 79 and inside the guide cylinder 73. The spring baffle 711 is fixedly fitted on the outer wall of the measuring column 79 and is located below the spring 710. A lifting assembly 712 is fitted on the outer wall of the measuring column 79 and below the guide cylinder 73. One end of the transmission pipe 55 is connected to the output pipe 74, and one end of the input pipe 76 is connected to the polyether polyol raw material storage tank. The lifting assembly 712 includes a stop block 7121 and a component fixedly connected to the stop block 7121. The mounting sleeve 7122 on the outer wall of the 121 and the grooves evenly opened on the side wall of the stop block 7121. The initial position of the lowest point of the bottom of the stop block 7121 is just in contact with the lifting block 93, and no lifting force is generated on the stop block 7121. The roller 7123 is rotatably connected inside the groove. The first locking bolt 7124 is threaded on the outer wall of the mounting sleeve 7122. The mounting sleeve 7122 is slidably sleeved on the outer wall of the measuring column 79. The first locking bolt 7124 is used to lock the mounting sleeve 7122 on the outer wall of the measuring column 79. The scale lines are evenly arranged on the outer wall of the measuring column 79.

[0043] This invention also discloses a processing technology for a flexible multi-specification polyether polyol preparation system, the specific process including the following steps:

[0044] Step 1: Based on the types of polyether polyol raw materials corresponding to the multiple automatic dispensing mechanisms 7, and according to the proportion of each raw material, set the amount of raw material automatically obtained so that the amount of polyether polyol raw material drawn each time is the same as the set value.

[0045] Step 2: Start the servo motor 8 to drive the drive component 9 to rotate at a constant speed in a directional manner. The drive component 9 triggers the automatic batching mechanism 7 to repeatedly suck up and extrude raw materials. The raw materials discharged from the automatic batching mechanism 7 are transported to the mixing mechanism 5.

[0046] Step 3: After the mixing mechanism 6 initially mixes the polyether polyol raw materials delivered to it, it uses centrifugal force to spray them into the reactor 1. The mixing mechanism 6 stirs and mixes the raw materials again. The reactor 1 is equipped with a heating mechanism for heating the reaction process. The temperature setting of the heating mechanism is controlled by the controller 4.

[0047] In use, firstly, the input pipes 76 of the multiple automatic dispensing mechanisms are connected to the corresponding external polyether polyol raw material storage tanks. The raw materials stored in the polyether polyol raw material storage tanks are initiators (compounds containing active hydrogen groups), ethylene oxide (EO), propylene oxide (PO), or butane oxide (BO). Then, the height of the lifting component 712 in each automatic dispensing mechanism 7 is adjusted according to the proportion of different raw materials. During adjustment, the operator uses the ladder 3 to approach the drive component 9, loosens the first locking bolt 7124, and adjusts the height according to the scale lines on the surface of the measuring column 79 and the proportion of the polyether polyol raw material corresponding to the automatic dispensing mechanism 7. The lower moving mounting sleeve 7122 moves one scale mark distance, and the piston 78 moves one millimeter accordingly, changing the amount of raw material obtained by one milliliter. The position of the piston 78 in other automatic proportioning mechanisms 7 is adjusted according to the above adjustment rules. After adjustment, the first locking bolt 7124 is tightened again. Then, the servo motor 8 is started to drive the transmission shaft 51 to rotate. Since the drive assembly 9 and the output shaft of the servo motor 8 are fixedly connected, the drive assembly 9 can rotate. When the lifting block 93 and the stop block 712 meet, the stop block 712 is pushed upwards, thereby pushing the measuring rod 79 upwards to push the piston 78 to slide upwards along the inner wall of the measuring cylinder 71. The raw material is squeezed into the transmission pipe 55 through the output pipe 74. After the lifting block 93 and the stop block 7121 separate, the spring 710 pushes the spring baffle 711 downward, thereby causing the piston 78 to move downward synchronously until the spring baffle 711 and the bottom of the guide cylinder 73 cavity abut. The suction force generated when the piston 78 moves downward draws the raw material in the external polyether polyol raw material storage tank into the measuring cylinder 71 through the input pipe 76. The space between the top of the piston 78 and the cavity of the measuring cylinder 71 is filled. When the piston 78 moves upward again to the top of the cavity of the measuring cylinder 71, the raw material is squeezed out again. This cycle repeats. The working process of other automatic batching mechanisms 7 is the same as the above principle. The process is not described in detail here. After the polyether polyol raw material is transported to the mixing cylinder 521 through the transfer pipe 55, the mixing cylinder 521 is rotated and the raw material entering it is stirred by the baffle plate 523. Under the action of gravity, the polyether polyol raw material enters the stirring rod 53 through the through hole at the bottom of the mixing cylinder 521. Since the stirring rod 53 rotates synchronously with the drive shaft 51, the polyether polyol raw material is thrown out of the stirring rod 53 cavity through the through hole 54 by the centrifugal force and is scattered inside the reaction vessel 1 cavity. At the same time, the stirring rod 53 stirs the polyether polyol raw material entering the reaction vessel. After the reaction is completed, the polyether polyol product is output through the discharge pipe at the bottom of the reaction vessel 1.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible processing system for preparing polyether polyols of various specifications, comprising a reactor (1), a protective cover (2) disposed on the top of the reactor (1), and a ladder (3) fixedly connected to the side wall of the reactor (1), characterized in that: A controller (4) for controlling electrical equipment is fixedly installed on the outer wall of the reactor (1), and a mixing mechanism (5) for stirring polyether polyol raw materials is rotatably installed inside the reactor (1). A support mechanism (6) is installed above the protective cover (2). Multiple automatic batching mechanisms (7) for proportioning polyether polyol raw materials are evenly arranged inside the support mechanism (6). A servo motor (8) for driving the mixing mechanism (5) to rotate is fixedly installed on the top of the support mechanism (6) and between the multiple automatic batching mechanisms (7). A drive assembly (9) is fixedly sleeved on the outer wall of the output shaft of the servo motor (8) and on the top of the protective cover (2). The automatic dispensing mechanism (7) includes a measuring cylinder (71), a sealing cap (72) fixedly connected to the top of the measuring cylinder (71), and a guide cylinder (73) bolted to the bottom of the measuring cylinder (71). An inlet pipe assembly and an outlet pipe assembly are respectively provided on both sides of the top of the sealing cap (72). The inlet pipe assembly includes an outlet pipe (74) and a first one-way valve (75). The outlet pipe (74) is fixedly connected to the top of the sealing cap (72), and the first one-way valve (75) is fixedly connected inside the outlet pipe (74) to allow only the polyether polyol raw material to be discharged from the measuring cylinder (71). The outlet pipe assembly includes an inlet pipe (76) and a second one-way valve (77). The inlet pipe (76) is fixedly connected to the top of the sealing cap (72). The second one-way valve (77) is fixedly connected inside the input pipe (76) and is used to allow only the polyether polyol raw material to flow into the measuring cylinder (71). A piston (78) is slidably connected inside the measuring cylinder (71). A measuring column (79) is fixedly connected to the bottom of the piston (78). The bottom end of the measuring column (79) slides through the guide cylinder (73) and extends to the outside. A spring (710) and a spring baffle (711) are respectively sleeved on the outer wall of the measuring column (79) and inside the guide cylinder (73). The spring baffle (711) is fixedly sleeved on the outer wall of the measuring column (79) and the spring baffle (711) is located below the spring (710). A lifting assembly (712) is sleeved on the outer wall of the measuring column (79) and below the guide cylinder (73).

2. The flexible processing system for preparing multi-specification polyether polyols according to claim 1, characterized in that: The support mechanism (6) includes two support rods (61) arranged symmetrically on the left and right. The support rods (61) are respectively fixedly fitted with a bearing plate (62) at the upper and lower positions of their outer walls. The bottom end of the support rods (61) is fixedly connected to the outer wall of the reactor (1).

3. The flexible processing system for preparing multi-specification polyether polyols according to claim 1, characterized in that: The mixing mechanism (5) includes a drive shaft (51) and a primary mixing assembly (52) fixedly sleeved on the outer wall of the drive shaft (51). A plurality of stirring rods (53) are uniformly arranged between the primary mixing assembly (52) and the drive shaft (51). The top end of the stirring rod (53) is fixedly connected to the bottom of the primary mixing assembly (52) for conveying the polyether polyol raw material inside the primary mixing assembly (52) to the reactor (1). The bottom end of the stirring rod (53) is fixedly connected to the outer wall of the drive shaft (51), and through holes (54) are uniformly opened on the outer wall of the stirring rod (53) near the inner wall of the reactor (1). A plurality of transmission pipes (55) for conveying polyether polyol raw material into the primary mixing assembly (52) are uniformly arranged on the top of the primary mixing assembly (52).

4. The flexible processing system for preparing multi-specification polyether polyols according to claim 3, characterized in that: The primary mixing component (52) includes a mixing cylinder (521), an annular groove (522) opened on the top of the mixing cylinder (521), and a baffle plate (523) uniformly fixed inside the mixing cylinder (521). An anti-overflow plate (524) is rotatably connected inside the annular groove (522).

5. The flexible processing system for preparing multi-specification polyether polyols according to claim 4, characterized in that: The top end of the drive shaft (51) is connected to the output shaft of the servo motor (8) via a coupling. The bottom end of the transmission pipe (55) passes through the anti-overflow plate (524) and extends into the annular through groove (522). The mixing cylinder (521) is fixedly sleeved on the outer wall of the drive shaft (51).

6. The flexible processing system for preparing multi-specification polyether polyols according to claim 3, characterized in that: One end of the transmission pipe (55) is connected to the output pipe (74), and one end of the input pipe (76) is connected to the polyether polyol raw material storage tank.

7. The flexible processing system for preparing multi-specification polyether polyols according to claim 6, characterized in that: The lifting assembly (712) includes a stop (7121), a mounting sleeve (7122) fixedly connected to the outer wall of the stop (7121), and grooves evenly opened on the side wall of the stop (7121). A roller (7123) is rotatably connected inside the groove. A first locking bolt (7124) is threadedly connected to the outer wall of the mounting sleeve (7122). The mounting sleeve (7122) is slidably sleeved on the outer wall of the measuring column (79).

8. The flexible processing system for preparing multi-specification polyether polyols according to claim 7, characterized in that: The drive assembly (9) includes a telescopic cylinder (91) and a telescopic rod (92) slidably connected inside the telescopic cylinder (91). A lifting block (93) is fixedly connected to the top of the telescopic rod (92) on the side away from the telescopic cylinder (91). A second locking bolt (94) is threaded onto the outer wall of the telescopic cylinder (91). The telescopic cylinder (91) is fixedly sleeved on the outer wall of the output shaft of the servo motor (8). The rotation radius of the lifting block (93) is the same as the radius of the circle formed by multiple stops (7121).

9. A processing method for a flexible processing system for preparing multi-specification polyether polyols according to any one of claims 1-8, characterized in that: The process specifically includes the following steps: Step 1: Based on the types of polyether polyol raw materials corresponding to the multiple automatic dispensing mechanisms (7), and according to the proportion of each raw material, set the amount of raw material automatically obtained so that the amount of polyether polyol raw material drawn each time is the same as the set value. Step 2: Start the servo motor (8) to drive the drive component (9) to rotate at a constant speed in a directional manner. Use the drive component (9) to trigger the automatic batching mechanism (7) to repeatedly suck up raw materials and squeeze out raw materials. The raw materials discharged from the automatic batching mechanism (7) are transported to the mixing mechanism (5). Step 3: The mixing mechanism (5) initially mixes the polyether polyol raw materials delivered to it and then uses centrifugal force to spray them into the reactor (1). The mixing mechanism (5) then stirs and mixes the raw materials again.

10. The processing technology of the flexible processing system for preparing multi-specification polyether polyols according to claim 9, characterized in that: The reactor (1) is equipped with a heating mechanism for heating the reaction process. The temperature setting of the heating mechanism is controlled by a controller (4).

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