Esterification reaction equipment for preparing water-reducing agent macromonomer

Abstract

This invention discloses an esterification reaction apparatus for preparing macromonomers of water-reducing agents, belonging to the technical field of esterification reaction equipment. It includes a reaction vessel body and a bottom-drive motor. A main conveying rod module is configured at the center of the inner bottom of the reaction vessel body. Through the coordinated arrangement of the built-in conveying cavity and radial distribution arms, the traditional top-drop or single-point sidewall input is transformed into multi-point in-situ dynamic feeding under the reaction liquid surface. Compared to the shortcomings of existing technologies where acrylic acid diffuses slowly in a plunger-like manner in high-viscosity polyethylene glycol melt and is difficult to dilute rapidly, the reciprocating rotation of the bottom-drive main shaft causes the acrylic acid to be diverted into the radial cavities on both sides within the conveying cavity. It then undergoes pre-mixing with the polymerization inhibitor solution in the mixing valve head mechanism before contact, allowing the reactant monomer and polymerization inhibitor to form a protective blend system before entering the main liquid phase. This fundamentally suppresses the problem of excessively high local instantaneous concentrations of highly reactive monomers in diffusion-restricted environments.

Description

Technical Field

[0001] This invention relates to the field of esterification reaction equipment technology, and more specifically, to an esterification reaction equipment for the preparation of water-reducing agent macromonomers. Background Technology

[0002] Polycarboxylate superplasticizer is the third generation of high-performance concrete admixtures in the existing technology. It is usually carried out by esterification reaction of acrylic acid and high molecular weight polyethylene glycol in the presence of catalyst and polymerization inhibitor. The esterification process is generally carried out in a stirred reactor with reflux water separation. The equipment mainly consists of a reactor body, stirring device, heating jacket, condensation reflux device and dripping system. First, waxy PEG is put into the reactor, heated and melted, and then p-toluenesulfonic acid catalyst and phenolic quinone polymerization inhibitor are added. Then, acrylic acid is slowly added dropwise under the corresponding temperature conditions to carry out the reaction.

[0003] However, when traditional esterification reactors process high-viscosity, large-monomer systems, especially when using PEG with a molecular weight of 2000 or higher, the viscosity of the molten material typically exceeds 50 Pascals per second, exhibiting typical non-Newtonian laminar flow characteristics. In this high-viscosity medium, conventional anchor or paddle agitators struggle to create effective circulation. The paddle's propulsion range is limited to the near-wall region, resulting in numerous mixing dead zones in the central axis of the reactor and below the liquid surface. When acrylic acid is added via a single dropper, the low diffusion coefficient of the high-viscosity medium prevents rapid dilution and dispersion, leading to excessively high local instantaneous concentrations and a rapid accumulation of reaction heat.

[0004] To alleviate the aforementioned mixing problem, some production lines have attempted to extend the dripping tube below the liquid surface and close to the high-shear zone of the stirring blades, utilizing the shear force generated by the blade rotation to accelerate the dispersion and mixing of acrylic acid. Alternatively, they have proposed multi-point dripping or annular distribution tube designs, aiming to disperse acrylic acid into multiple areas to reduce local concentration peaks. However, in a high-viscosity laminar flow field, acrylic acid still diffuses slowly along the dripping tube outlet in a plunger-like manner, the mixing distance remains too long, and the problem of local over-concentration is still difficult to eradicate. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide an esterification reaction device for the preparation of water-reducing agent macromonomers, so as to solve the above-mentioned technical problems.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] An esterification reaction device for preparing water-reducing agent macromonomers includes a reaction vessel body. The top of the reaction vessel body is open, and a sealed top cover structure is bolted to the open end. Several material replenishment ports are arranged at the edge of the sealed top cover structure. An outer vessel jacket sleeve is fixedly connected to the outer surface of the reaction vessel body. A bottom drive motor is fixedly installed at the center of the outer bottom of the reaction vessel body. A main conveying rod module is arranged at the center of the inner bottom of the reaction vessel body. The main conveying rod module includes a limiting rotating shaft base sleeve, on which a central rotating rod perpendicular to the inside of the reactor body is movably installed, and the bottom of the central rotating rod is connected to the output end of the bottom drive motor to drive the central rotating rod to reciprocate 360 ​​degrees. The inner top of the shaft is provided with a conveying chamber for conveying acrylic acid. Two sets of symmetrically arranged auxiliary conveying block modules are assembled on the outer surface of the shaft. Each set of auxiliary conveying block modules is equipped with several mixing valve head mechanisms, and each mixing valve head mechanism is equipped with a third conveying hose for conveying the polymerization inhibitor solution. When the acrylic acid in the conveying chamber enters each mixing valve head mechanism, it is mixed with the polymerization inhibitor solution in the third conveying hose and sprayed out. A stirring module is provided on the outside of the auxiliary conveying block modules to mix the sprayed reagent in real time below the reaction liquid surface.

[0008] As a further aspect of the present invention: a self-priming mechanism is configured on the sealing top cover of the reactor body. A circular opening is provided at the center of the sealing top cover of the reactor body, and a circular frame sealing sleeve is fixedly connected to the edge of the circular opening. The circular frame sealing sleeve is an overall circular groove structure, and an embedded cavity disc block is movably installed in the circular groove. The bottom surface of the embedded cavity disc block faces the interior of the reactor body, and several circular openings are provided on its surface. A conduit-type support frame is fixedly installed on the top of the embedded cavity disc block. The conduit-type support frame is composed of several forked L-shaped cavity frames, and the bottom of each forked L-shaped cavity frame is connected to the upper surface of the embedded cavity disc block. The tops of each forked L-shaped cavity frame are connected, and an external discharge conduit is fixedly installed on the connection end to transfer the rising steam drawn up from the circular opening on the bottom surface of the embedded cavity disc block in real time.

[0009] As a further aspect of the present invention: the self-priming drive mechanism further includes a servo motor fixedly installed at the middle position of the guide tube support frame. The output end of the servo motor faces the side of the embedded cavity disc block, and a first assembly rod is fixedly installed on the output end. The first assembly rod passes through the center of the embedded cavity disc block and enters the inner top of the reactor body. An anti-adsorption fan group is fixedly installed on the end face of the rod that passes through the embedded cavity disc block. The main conveying rod module further includes a sealing valve head fixedly installed on the top of the shaft rotating rod. A second assembly rod is movably installed at the center of the sealing valve head. The top of the second assembly rod is fixedly connected to the first assembly rod, and a first bevel gear head is fixedly installed at the bottom of the second assembly rod.

[0010] As a further aspect of the present invention: the main conveying rod module further includes a first reserved opening at a symmetrical position on the outer surface of the shaft rotating rod. Inside the conveying cavity, at the outer edge of the first reserved opening, a first magnetic ring with the same center is movably installed. A bifurcated assembly frame is fixedly connected to the surface of each first magnetic ring. A second reserved opening aligned with the first reserved opening is opened at the center of each bifurcated assembly frame. A sealing plug is provided at the outer edge of the top of the sealing valve head to add acrylic acid. A first conveying hose is fixedly connected to the side of the sealing plug. The first conveying hose penetrates into the bottom of the conveying cavity, and two second conveying hoses fixedly connected to its ends are respectively fixedly installed on the bifurcated assembly frames on both sides. A connecting pipe head is fixedly connected to the end of each of the second conveying hoses.

[0011] As a further embodiment of the present invention: the stirring module includes a ring frame fixedly installed at the first reserved opening positions on both sides of the outer surface of the shaft rotating rod. A ring-shaped diaphragm plate is fixedly installed on the edge of the ring frame, and a ring-shaped outer protrusion plate is movably installed through the diaphragm plate. Several outwardly protruding protrusion plate structures are fixedly connected to the outer edge of the ring-shaped outer protrusion plate, and a horizontally extending stirring strainer is fixedly connected to each protrusion plate structure. A second magnetic ring is fixedly connected to the mating surface where the ring-shaped outer protrusion plate and the diaphragm plate are movably installed. The second magnetic ring is attracted and corresponds to the first magnetic ring through the diaphragm plate. A third reserved opening aligned with the first reserved opening is opened at the center of the ring frame, and a fourth reserved opening aligned with the third reserved opening is opened at the center of the ring-shaped outer protrusion plate.

[0012] As a further aspect of the present invention: the auxiliary conveying block module includes a hollow conveying housing fixedly connected to the center of the circular ring frame. A third assembly rod is movably installed at the middle position inside the hollow conveying housing. A third conical gear head is fixedly connected to one end of the third assembly rod near the shaft rotating rod. One end of the third conical gear head is placed entirely in the conveying cavity through a third reserved opening and meshes with the side of the first conical gear head in the conveying cavity. Several opposing fifth reserved openings are sequentially opened on the upper and lower surfaces of the hollow conveying housing. A second conical gear head is fixedly installed at the position of the fifth reserved opening on the third assembly rod.

[0013] As a further aspect of the present invention: the actual mixing valve head mechanism includes a circular cavity temporary storage cylinder fixedly installed on the outside of each fifth reserved port. The bottom of each circular cavity temporary storage cylinder is fixedly connected to a third conveying hose, and all the third conveying hoses are connected together as one unit inside the cavity conveying shell. They pass through the fourth reserved port, the third reserved port, and the first reserved port into the conveying cavity, and are respectively assembled on the connecting pipe head to connect with the second conveying hose; the side of the third assembly rod that passes through the conveying cavity is fixedly connected to the second reserved port.

[0014] As a further aspect of the present invention: the actual mixing valve head mechanism further includes an annular guide rail opened on the outer edge of the annular cavity temporary storage cylinder, and an annular conical cover is movably installed on the outside of the annular cavity temporary storage cylinder through the annular guide rail. The annular conical cover is an outwardly contracting conical soft rubber structure and covers the outside of the annular cavity temporary storage cylinder. A hard shell disk is fixedly connected to the outside of the annular conical cover, and a first delivery pump is fixedly installed at the center of the hard shell disk.

[0015] As a further aspect of the present invention: the actual mixing valve head mechanism further includes two opposing external extension rods fixedly connected to the inner wall of each annular conical cover. The external extension rods extend toward the center end of the annular cavity temporary storage cylinder, and a leak annular cover is fixedly connected to the extended end. Several turbulence stirring plates are arranged circumferentially at equal intervals on the outer edge of the leak annular cover, and each turbulence stirring plate is arranged in an outward oblique extension shape. A discharge valve head is fixedly installed at the bottom of the bottom drive motor.

[0016] As a further aspect of the present invention: the actual mixing valve head mechanism further includes a conical extension cylinder fixedly connected to the end face of each leaking annular cover. The conical extension cylinders all extend toward the inside of the cavity conveying housing, and a fourth conical gear head is fixedly installed on the output end of each cylinder. The fourth conical gear head meshes with the second conical gear head inside the cavity conveying housing. Several obliquely extending pressure boosting valve heads are circumferentially and equidistantly connected on the inner ring edge of the annular cavity temporary storage cylinder, and each obliquely extending pressure boosting valve head faces one end of the turbulence stirring plate.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects: This solution, through the coordinated arrangement of the built-in conveying cavity and radial distribution arms, transforms the traditional top-feeding or single-point sidewall input into multi-point in-situ dynamic feeding under the reaction liquid surface. Compared with the shortcomings of existing technologies where acrylic acid diffuses slowly in a plunger-like manner in high-viscosity polyethylene glycol melt and is difficult to dilute rapidly, the reciprocating rotation of the bottom-driven main shaft causes the acrylic acid to be diverted to the radial cavities on both sides within the conveying cavity. It then undergoes pre-mixing with the polymerization inhibitor solution in the mixing valve head mechanism before contact, allowing the reactive monomer and polymerization inhibitor to form a protective blend system before entering the liquid phase. This suppresses the problem of excessively high local instantaneous concentration of highly reactive monomers in a diffusion-restricted environment from the source, effectively mitigating the risk of self-polymerization caused by rapid accumulation of reaction heat, and providing a basic material environment for the stable esterification of high-viscosity systems.

[0018] By utilizing the combination of bevel gear transmission chain and magnetic coupling structure, forced centrifugal dispersion and deep entrainment of mixed reagents are achieved. The bevel gear set inside the cavity delivery shell converts the axial rotation of the main shaft into high-speed rotation of the radial actuator, which drives the annular cover of the leak and the inclined turbulence stirring plate on its outer edge to operate synchronously. With the assistance of fluid momentum coupling, the premixed liquid is sheared and dispersed the instant it leaves the nozzle, driving the outer stirring leak plate to perform non-contact radial shearing and axial circulation of the reaction liquid, realizing continuous operation of mixing, injection and deep entrainment at the same time, and eliminating the mixing dead zone between the central axis and the liquid surface inside the vessel.

[0019] The servo motor drives the anti-adsorption fan group to create a negative pressure suction flow field at the bottom of the embedded cavity disk, which forces the water vapor and volatile components generated by the esterification reaction into the branch guide frame and transfer them through the external exhaust pipe. This avoids the steam from lingering above the liquid surface and affecting the dehydration reaction balance. At the same time, the same rotating power source is used to transmit power downward to the auxiliary conveying module through the meshing of bevel gears, realizing the same source drive for the upper exhaust and the lower transmission. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the interior of the reactor body of the present invention; Figure 3 This is a schematic diagram of the self-priming mechanism of the present invention in its disassembled state; Figure 4 This is a structural schematic diagram of the main conveyor rod module of the present invention in a disassembled state; Figure 5 for Figure 4 Enlarged structural diagram at point A in the diagram; Figure 6 This is a schematic diagram of the disassembled state of the stirring module of the present invention; Figure 7 This is a schematic diagram of the disassembled state of the actual mixing valve head mechanism of the present invention; Figure 8 This is a structural diagram of the split state of the sub-conveying block module of the present invention. Attached Figure

[0022] 1. Reactor body; 2. Material supply port; 3. Outer jacket sleeve; 4. Drive self-priming mechanism; 41. Circular frame sealing sleeve; 42. Embedded cavity disc block; 43. Guiding support frame; 44. External exhaust duct; 45. Servo motor; 46. First assembly rod; 47. Anti-adsorption fan assembly; 5. Main conveyor rod module; 51. Shaft rotating rod; 52. Conveying chamber; 53. Sealing valve head; 54. First conveying hose; 55. Second assembly rod; 56. Limiting shaft base sleeve; 57. First bevel gear head; 58. First reserved opening; 59. First magnetic ring; 510. Forked assembly frame; 511. Second reserved opening; 512. Connecting pipe head; 513. Second conveying hose; 6. Stirring module; 61. Ring frame; 62. Third reserved opening; 63. Diaphragm retainer; 64. Outer protrusion of the ring; 65. Fourth reserved opening; 66. Second magnetic ring; 67. Stirring strainer; 68. Secondary conveyor block module; 681. Hollow conveyor housing; 682. Fifth reserved opening; 683. Third assembly rod; 684. Second bevel gear head; 685. Third bevel gear head; 69. Mixing valve head mechanism; 691. Annular cavity temporary storage cylinder; 692. Annular guide rail; 693. Annular conical cover; 694. Hard shell disc; 695. First delivery pump; 696. Outer extension rod; 697. Annular vent cover; 698. Turbulence stirring plate; 699. Conical extension cylinder; 6910. Fourth conical gear head; 6911. Third delivery hose; 6912. Pressure booster valve head; 7. Bottom drive motor; 8. Discharge valve head.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The esterification reaction apparatus for preparing water-reducing agent macromonomers provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] like Figures 1 to 8 As shown, this embodiment of the invention provides an esterification reaction device for preparing water-reducing agent macromonomers, including a reaction vessel 1. The top of the reaction vessel 1 is open, and a sealed top cover structure is assembled on the open end by bolts. Several material replenishment ports 2 are arranged at the edge of the sealed top cover structure. An outer vessel jacket sleeve 3 is fixedly connected to the outer surface of the reaction vessel 1. A bottom drive motor 7 is fixedly installed at the center of the outer bottom of the reaction vessel 1. A main conveying rod module 5 is arranged at the center of the inner bottom of the reaction vessel 1. The main conveying rod module 5 includes a limiting rotating shaft base sleeve 56, on which a central rotating rod 51 perpendicular to the inside of the reactor body 1 is movably installed. The bottom of the central rotating rod 51 is connected to the output end of the bottom drive motor 7 to drive the central rotating rod 51 to reciprocate 360 ​​degrees. The inner top of the shaft rotor 51 is provided with a conveying chamber 52 for conveying acrylic acid. Two sets of symmetrically arranged auxiliary conveying block modules 68 are assembled on the outer surface of the shaft rotor 51. Each set of auxiliary conveying block modules 68 is equipped with several mixing valve head mechanisms 69, and each mixing valve head mechanism 69 is equipped with a third conveying hose 6911 for conveying the polymerization inhibitor solution. When the acrylic acid in the conveying chamber 52 enters each mixing valve head mechanism 69, it is mixed with the polymerization inhibitor solution in the third conveying hose 6911 and sprayed out. A stirring module 6 is provided on the outside of the auxiliary conveying block modules 68 for real-time mixing of the sprayed reagent below the reaction liquid surface.

[0026] To address the problems of mixing dead zones caused by the laminar flow characteristics of non-Newtonian fluids when processing high-viscosity polyethylene glycol systems in existing technologies, as well as the risks of reaction heat accumulation and self-polymerization caused by excessively high local instantaneous concentrations of acrylic acid during dropwise addition, the above-mentioned technical solution is adopted. This technical solution mainly consists of a reactor body 1, a main conveying rod module 5, a secondary conveying block module 68, a mixing valve head mechanism 69, and a stirring module 6.

[0027] The reactor body 1 serves as the main container of the equipment. Its top opening structure, together with the bolt-assembled sealed top cover structure, forms a closed reaction space. The material replenishment port 2 located at the edge of the sealed top cover is used for the initial input of raw materials. The outer vessel jacket sleeve 3 is used to introduce heat transfer oil or cooling water to achieve temperature control during the reaction process. The bottom center of the reactor body 1 is equipped with a bottom drive motor 7, which serves as an additional power source at the bottom and is used to drive the internal main conveying rod module 5 to perform a 360-degree reciprocating rotation during operation.

[0028] The main conveying rod module 5's central rotating rod 51 serves as the mechanical transmission axis, while its internal conveying chamber 52 forms a vertical conveying channel for acrylic acid materials. This changes the traditional top-drop or side-wall single-point input to internal multi-point distributed in-situ mixing. By setting a secondary conveying block module 68 on the outer wall of the central rotating rod 51, the acrylic acid conveyed along the main shaft is diverted to the radial position of the reactor body 1. Each set of secondary conveying block modules 68 is equipped with a mixing valve head mechanism 69, which introduces a polymerization inhibitor solution through a third conveying hose 6911. In the working state, the acrylic acid in the conveying chamber 52 and the polymerization inhibitor solution in the third conveying hose 6911 merge at the end position inside the mixing valve head mechanism 69. This achieves pre-mixing and co-injection of the reactive monomers and polymerization inhibitors before contacting the reaction liquid, allowing the polymerization inhibitor to adhere closely to the acrylic acid molecules for protection, inhibiting the local self-polymerization of highly active monomers in high-viscosity media, and improving the purity of the product and the safety of the reaction.

[0029] In addition, the stirring module 6 located outside the auxiliary conveying block module 68 is positioned corresponding to the injection port of the actual mixing valve head mechanism 69. When the actual mixing valve head mechanism 69 sprays out the mixing reagent, the stirring module 6 not only provides mechanical stirring but also uses the fluid power generated by its rotation to force the sprayed reagent into the deep region, realizing simultaneous mixing, injection, and deep entrainment. This completely avoids the vapor space above the liquid surface and directly injects the reactants into the main flow field of the reaction liquid phase. The turbulence generated by stirring rapidly dilutes the acrylic acid, eliminates dead zones with excessively high local concentrations, and solves the problems of mass transfer and thermal runaway in high-viscosity esterification reactions.

[0030] like Figures 1 to 8As shown, a self-priming mechanism 4 is configured on the sealing top cover of the reactor body 1. A circular opening is provided at the center of the sealing top cover of the reactor body 1, and a circular frame sealing sleeve 41 is fixedly connected to the edge of the circular opening. The circular frame sealing sleeve 41 is a circular groove structure, and an embedded cavity disc block 42 is movably installed in the circular groove. The bottom surface of the embedded cavity disc block 42 faces the inside of the reactor body 1, and several circular openings are provided on its surface. A conduit-type support frame 43 is fixedly installed on the top of the embedded cavity disc block 42. The conduit-type support frame 43 is composed of several forked L-shaped cavity frames, and the bottom of each forked L-shaped cavity frame is connected to the upper surface of the embedded cavity disc block 42. The tops of each forked L-shaped cavity frame are connected, and an external discharge conduit 44 is fixedly installed on the connection end to transfer the rising steam drawn from the circular opening on the bottom surface of the embedded cavity disc block 42 in real time.

[0031] like Figures 1 to 8 As shown, the self-priming drive mechanism 4 also includes a servo motor 45 fixedly installed at the middle position of the guide tube support frame 43. The output end of the servo motor 45 faces the side of the embedded cavity disk block 42, and a first assembly rod 46 is fixedly installed on the output end. The first assembly rod 46 passes through the center of the embedded cavity disk block 42 and enters the inner top of the reactor body 1. An anti-adsorption fan group 47 is fixedly installed on the end face of the embedded cavity disk block 42. The main conveying rod module 5 also includes a sealing valve head 53 fixedly installed on the top of the shaft rotating rod 51. A second assembly rod 55 is movably installed at the center of the sealing valve head 53. The top of the second assembly rod 55 is fixedly connected to the first assembly rod 46, and a first bevel gear head 57 is fixedly installed at the bottom of the second assembly rod 55.

[0032] The circular frame sealing sleeve 41 serves as the base connecting the sealing top cover and the self-priming drive mechanism 4. Its annular groove structure provides an axial limiting and radial sealing installation environment for the embedded cavity disc block 42. The embedded cavity disc block 42 is movably installed in the groove of the circular frame sealing sleeve 41, with its bottom surface facing the internal space of the reactor body 1. Several circular openings on its surface form communication windows between the internal steam and the external exhaust system of the reactor. The duct-type support frame 43 is fixed to the top of the embedded cavity disc block 42 and consists of several forked L-shaped cavity frames. These L-shaped cavity frames serve as structural supports, and their hollow internal channels form the primary steam flow path. The bottom of each forked L-shaped cavity frame is connected to the cavity on the upper surface of the embedded cavity disc block 42, allowing... The rising steam drawn in from the bottom circular opening of the embedded hollow disc block 42 can enter the interior of the duct-type support frame 43. All the L-shaped hollow frames converge and connect at the top to form a unified airflow confluence chamber. An external exhaust duct 44 is fixedly installed at the connection end. The external exhaust duct 44 serves as the final exhaust port for connecting to an external condensation recovery device or tail gas treatment system. Thus, during operation, the negative pressure generated by the self-priming mechanism 4 is used to transfer the water vapor and volatile components generated during the reaction process out of the reactor body 1 in real time, preventing water vapor from accumulating at the top and affecting the reaction balance. A servo motor 45 is fixedly installed in the middle of the duct-type support frame 43, with its output end facing the inside of the reactor body 1. A first assembly rod 46 is fixedly connected to the output shaft of the servo motor 45. The first assembly rod 46 serves as the main shaft for power transmission, passing through the central through hole of the embedded cavity disc block 42 and extending to the inner top space of the reactor body 1. A reverse adsorption fan assembly 47 is fixedly installed on the end face of the first assembly rod 46 that penetrates the embedded cavity disc block 42. The reverse adsorption fan assembly 47 rotates at high speed under the drive of the servo motor 45, generating an upward axial flow. This airflow is opposite to that of a conventional exhaust fan and acts directly on the circular opening on the surface of the embedded cavity disc block 42, forcibly drawing the rising water vapor inside the reactor body 1 into the cavity of the embedded cavity disc block 42, and then discharging it through the duct-type support frame 43 and the external exhaust pipe 44. By using the forced suction at the center of the reactor, the vapor retention layer above the high viscosity liquid surface is broken, accelerating the esterification and dehydration reaction.

[0033] Meanwhile, the bottom of the first assembly rod 46 is fixedly connected to the second assembly rod 55 located at the center of the sealing valve head 53, directly transmitting the power of the servo motor 45 to the main conveying rod module 5. The bottom of the second assembly rod 55 is fixedly installed with the first bevel gear head 57, providing a power input basis for the subsequent radial rotation of the auxiliary conveying block module 68 through bevel gear meshing. During operation, it realizes the integrated function of upper exhaust and lower transmission, which not only solves the problem of steam discharge from the top of the reactor, but also provides rotational driving force for the internal fluid conveying and stirring system.

[0034] like Figures 1 to 8 As shown, the main conveying rod module 5 also includes a first reserved opening 58 at a symmetrical position on the outer surface of the shaft rotating rod 51. Inside the conveying cavity 52, at the outer edge of the first reserved opening 58, there are concentric first magnetic rings 59. Each first magnetic ring 59 is fixedly connected to a bifurcated assembly frame 510. The center of each bifurcated assembly frame 510 is provided with a second reserved opening 511 aligned with the first reserved opening 58. A sealing plug is provided at the top outer edge of the sealing valve head 53 to add acrylic acid. A first conveying hose 54 is fixedly connected to the side of the sealing plug. The first conveying hose 54 passes through the bottom of the conveying cavity 52, and two second conveying hoses 513 are fixedly connected to its end, respectively fixedly installed on the bifurcated assembly frames 510 on both sides. Each end of the second conveying hose 513 is fixedly connected to a connecting pipe head 512.

[0035] The first reserved port 58 is opened on the outer wall of the shaft rotating rod 51, serving as a through hole penetrating the wall thickness of the shaft rotating rod 51 and forming a primary window for the fluid inside the conveying cavity 52 to be output to the outside. Inside the conveying cavity 52, at the outer edge of the first reserved port 58, a first magnetic ring 59 is coaxially and movably installed. The first magnetic ring 59 serves as a static sealing base for fluid distribution, and its annular structure has a through hole at the center for other components to pass through. The bifurcated assembly frame 510 is fixed to the surface of the first magnetic ring 59 and extends radially toward the shaft rotating rod 51. At the center of the bifurcated assembly frame 510, a second reserved port 511 is opened, aligned with the first reserved port 58 that communicates with the outside. The second reserved port 511 and the first reserved port 58 together form a flow channel for the fluid to flow from the inside of the conveying cavity 52 to the external radial space. A sealing plug is positioned at the top outer edge of the sealing valve head 53 to seal the inlet for replenishing materials. A first conveying hose 54 is fixedly connected to the side of the sealing plug. The first conveying hose 54 serves as a flexible connection between the external stationary pipeline and the internal rotating pipeline, entering the bottom of the conveying chamber 52 from the sealing valve head 53. At the end of the first conveying hose 54, two second conveying hoses 513 are fixedly connected. These two second conveying hoses 513 extend and are fixedly installed on the bifurcated assembly frames 510 on both sides, forming symmetrical fluid branches. Each end of the second conveying hose 513 is fixedly connected to a connecting pipe head 512. These connecting pipe heads 512 serve as the terminal interface for fluid output, used for quick docking and sealing connection with external actuators. Fluid is distributed at the bottom of the conveying chamber 52 through the bifurcated assembly frame 510, and finally delivered to the designated working position of the rotating equipment through the connecting pipe heads 512, realizing multi-channel fluid transmission inside the rotating spindle.

[0036] like Figures 1 to 8As shown, the stirring module 6 includes a ring frame 61 fixedly installed at the positions of the first reserved openings 58 on both sides of the outer surface of the shaft rotating rod 51. A ring-shaped diaphragm plate 63 is fixedly installed on the edge of the ring frame 61, and a ring-shaped outer protruding plate 64 is movably installed through the diaphragm plate 63. Several outwardly protruding plate structures are fixedly connected to the outer edge of the ring-shaped outer protruding plate 64, and a horizontally extending stirring strainer 67 is fixedly connected to each protruding plate structure. A second magnetic ring 66 is fixedly connected to the mating surface of the ring-shaped outer protruding plate 64 and the diaphragm plate 63. The second magnetic ring 66 is attracted and corresponds to the first magnetic ring 59 through the diaphragm plate 63. A third reserved opening 62 aligned with the first reserved opening 58 is opened at the center of the ring frame 61, and a fourth reserved opening 65 aligned with the third reserved opening 62 is opened at the center of the ring-shaped outer protruding plate 64.

[0037] like Figures 1 to 8 As shown, the auxiliary conveying block module 68 includes a hollow conveying housing 681 fixedly connected to the center of the circular ring frame 61. A third assembly rod 683 is movably installed at the middle position inside the hollow conveying housing 681. A third bevel gear head 685 is fixedly connected to one end of the third assembly rod 683 near the shaft rotating rod 51. One end of the third bevel gear head 685 is placed entirely in the conveying cavity 52 through the third reserved port 62, and it meshes with the side of the first bevel gear head 57 in the conveying cavity 52. ​​Several opposing fifth reserved ports 682 are sequentially opened on the upper and lower surfaces of the hollow conveying housing 681. A second bevel gear head 684 is fixedly installed on the third assembly rod 683 at the position of the fifth reserved port 682.

[0038] The ring frame 61 serves as the base of the stirring module 6 and is fixedly installed at the first reserved opening 58 positions on both sides of the outer surface of the shaft rotating rod 51 by fasteners. The third reserved opening 62 at its center is coaxially aligned with the first reserved opening 58 on the shaft rotating rod 51, forming an axial channel for fluid and power transmission. On the edge of the ring frame 61, a ring-shaped diaphragm plate 63 is fixedly installed. The diaphragm plate 63 serves as the interface for static sealing and dynamic cooperation. It is limited by its ring-shaped notch. A ring-shaped outer protrusion plate 64 is movably installed. The ring-shaped outer protrusion plate 64 serves as the carrier of the moving parts. Several outwardly protruding protrusion plate structures are fixedly connected to its outer edge. Each protrusion plate structure is fixedly connected to a horizontally extending stirring baffle 67. During rotation, the stirring baffle 67 performs radial shearing and axial circulation on the reaction liquid. A second magnetic ring 66 is fixedly connected to the mating surface of the annular convex plate 64 and the diaphragm plate 63. The second magnetic ring 66 forms a magnetic attraction relationship with the first magnetic ring 59 in the main conveying rod module 5 through the plate body of the diaphragm plate 63. Through the magnetic coupling structure, the rotational torque of the first magnetic ring 59 is transmitted to the second magnetic ring 66 through the magnetic field through the diaphragm plate 63, thereby driving the annular convex plate 64 and the stirring plate 67 on it to rotate synchronously, realizing non-contact power transmission between the rotating shaft and the stirring arm. At the same time, the fourth reserved port 65 opened at the center of the annular convex plate 64 is aligned with the third reserved port 62 on the annular frame 61, and then communicates with the first reserved port 58. The hollow conveying shell 681 in the auxiliary conveying block module 68 is fixedly connected to the center of the annular frame 61, serving as an intermediate cavity for fluid distribution and power transmission. A third assembly rod 683 is movably mounted in the middle of the cavity conveying housing 681. This third assembly rod 683 serves as an intermediate shaft for power transmission. A third bevel gear head 685 is fixedly connected to one end of the rod near the shaft center 51. The third bevel gear head 685 extends into the conveying cavity 52 through a third pre-reserved opening 62, forming a lateral meshing relationship with a first bevel gear head 57 fixedly mounted at the bottom of the second assembly rod 55. When the second assembly rod 55 in the main conveying rod module 5 rotates under the drive of the servo motor 45, the first bevel gear head 57 drives the third bevel gear head 685 to rotate, thereby driving the third assembly rod 683 to rotate within the cavity conveying housing 681.

[0039] The upper and lower surfaces of the cavity conveying housing 681 are provided with several opposing fifth reserved openings 682 for installing the external mixing valve head mechanism 69. On the third assembly rod 683, a second bevel gear head 684 is fixedly installed at the position corresponding to the fifth reserved opening 682. The second bevel gear head 684 is used to mesh with the rotating parts inside the mixing valve head mechanism 69 to convert the axial rotational power into radial stirring or conveying power.

[0040] like Figures 1 to 8As shown, the actual mixing valve head mechanism 69 includes an annular cavity storage cylinder 691 fixedly installed on the outside of each fifth reserved port 682. The bottom of each annular cavity storage cylinder 691 is fixedly connected to a third conveying hose 6911, and all the third conveying hoses 6911 are connected together as one unit inside the cavity conveying housing 681. They pass through the fourth reserved port 65, the third reserved port 62, and the first reserved port 58 into the conveying cavity 52, and are respectively assembled on the connecting pipe head 512 to connect with the second conveying hose 513. The side of the third assembly rod 683 that passes through the conveying cavity 52 is fixedly connected to the second reserved port 511.

[0041] like Figures 1 to 8 As shown, the actual mixing valve head mechanism 69 also includes an annular guide rail 692 opened on the outer edge of the annular cavity temporary storage cylinder 691, and an annular conical cover 693 is movably installed on the outside of the annular cavity temporary storage cylinder 691 through the annular guide rail 692. The annular conical cover 693 is an outwardly contracting conical soft rubber structure and covers the outside of the annular cavity temporary storage cylinder 691. A hard shell disk 694 is fixedly connected to the outside of the annular conical cover 693, and a first delivery pump 695 is fixedly installed at the center of the hard shell disk 694.

[0042] The annular cavity storage cylinder 691 serves as the fluid distribution base for the actual mixing valve head mechanism 69. It is fixedly installed on the outside of the fifth reserved port 682 of the hollow conveying housing 681 in the auxiliary conveying block module 68. Its hollow cavity structure forms a temporary storage and mixing space for the reaction components. Each annular cavity storage cylinder 691 is fixedly connected to a third conveying hose 6911 at its bottom. The third conveying hose 6911 serves as a conveying channel for the polymerization inhibitor. Its material has corrosion resistance and flexible bending properties. All the third conveying hoses 6911 converge and connect to each other inside the hollow conveying housing 681 to form a unified liquid supply pipe. This liquid supply pipe enters the internal space of the conveying cavity 52 through the fourth reserved port 65, the third reserved port 62, and the first reserved port 58 in stages. In the conveying cavity 52, the end of the third conveying hose 6911 is sealed and assembled with the connecting pipe head 512 and fluidly connected with the second conveying hose 513. The externally introduced polymerization inhibitor solution is delivered via the first delivery hose 54 to the second delivery hoses 513 on both sides, and then delivered to each of the third delivery hoses 6911 through the liquid supply pipe connected to one end of the second delivery hose 513, so as to enter the interior of the annular cavity storage cylinder 691. Meanwhile, the acrylic acid delivered by the main delivery rod module 5 is injected into the delivery chamber 52 through the sealing plug position on the sealing valve head 53, and then introduced into the cavity delivery housing 681 on both sides through the first reserved port 58 on both sides of the delivery chamber 52, so as to be poured into each actual mixing valve head mechanism 69 position through the fifth reserved port 682 on the cavity delivery housing 681, specifically the inner position of the annular cavity storage cylinder 691. The two reagents are physically mixed at the inner position of the annular cavity storage cylinder 691. The third assembly rod 683 is fixedly connected to the opening of the second reserved port 511 on one side of the delivery cavity 52 by a bracket. The bracket used for connection is hollow to avoid interfering with the reagent passing through the point. Using the center of the bifurcated assembly frame 510 as the radial support point, the rotational power source of the auxiliary delivery block module 68 is rigidly connected to the stationary base of the main delivery rod module 5, ensuring that the relative position between the actual mixing valve head mechanism 69 and the main shaft remains stable under high-speed rotation conditions.

[0043] Specifically, the annular guide rail 692 is formed on the outer edge surface of the annular cavity temporary storage cylinder 691. As a guiding structure, its annular track cooperates with the slider on the inner wall of the annular conical cover 693, allowing the annular conical cover 693 to rotate axially relative to the outer ring of the annular cavity temporary storage cylinder 691. The annular conical cover 693 is molded from a flexible soft rubber material and has an outwardly contracting conical structure covering the outside of the annular cavity temporary storage cylinder 691, with the tip of its conical structure facing the main body of the reaction liquid. A rigid shell disk 694 made of rigid engineering plastic is fixedly connected to the outside of the annular conical cover 693 to enhance the rigidity of the structure. A first delivery pump 695 is fixedly installed at the center of the rigid shell disk 694. The first delivery pump 695 is an active pressurization component and is directly installed near the injection point. With the stable support provided by the rigid shell disk 694, the reagent mixed in the annular cavity storage cylinder 691 is pressurized and forced to be ejected through the conical end face of the annular conical cover 693, so that the actual mixing valve head mechanism 69 can perform pulse-type injection mixing below the reaction liquid surface.

[0044] like Figures 1 to 8 As shown, the mixing valve head mechanism 69 also includes two opposing external extension rods 696 fixedly connected to the inner wall of each annular conical cover 693. The external extension rods 696 extend toward the center end of the annular cavity temporary storage cylinder 691, and a leak annular cover 697 is fixedly connected to the extended end. Several turbulence stirring plates 698 are arranged circumferentially at equal intervals on the outer edge of the leak annular cover 697, and each turbulence stirring plate 698 is arranged in an outward oblique extension shape. A discharge valve head 8 is fixedly installed at the bottom of the bottom drive motor 7.

[0045] like Figures 1 to 8 As shown, the actual mixing valve head mechanism 69 also includes a conical extension cylinder 699 fixedly connected to the end face of each leaking annular cover 697. The conical extension cylinders 699 all extend towards the inside of the cavity conveying housing 681, and a fourth conical gear head 6910 is fixedly installed on the output end of each of them. The fourth conical gear head 6910 meshes with the second conical gear head 684 inside the cavity conveying housing 681. Several obliquely extending pressure boosting valve heads 6912 are circumferentially and equidistantly connected on the inner ring edge of the annular cavity temporary storage cylinder 691, and each obliquely extending pressure boosting valve head 6912 faces one end of the turbulence stirring plate 698.

[0046] During the rotation of the first assembly rod 46 at the output end of the servo motor 45, the integrated second assembly rod 55 is driven to rotate synchronously. This causes the first bevel gear head 57 at the bottom of the second assembly rod 55 to drive the third bevel gear head 685 meshing on both sides to rotate. Consequently, the third assembly rod 683 at one end of the third bevel gear head 685 and the individual second bevel gear heads 684 on the outer surface of the third assembly rod 683 rotate synchronously. Since the fourth bevel gear head 6910 at the bottom of the conical extension cylinder 699 meshes with the second bevel gear head 684 inside the cavity delivery housing 681, it synchronously drives the annular cover 697 at one end of the conical extension cylinder 699 to rotate at the inner ring position of the annular cavity storage cylinder 691, mixing the reagent at that position. Meanwhile, the individual pressure boosting valve heads 6912, which are inclinedly connected to the inner ring of the annular cavity storage cylinder 691, spray the polymerization inhibitor solution toward one end of the turbulence stirring plate 698 in an inclined direction.

[0047] The external extension rod 696 serves as the internal support frame. Its two rods are arranged opposite each other and fixedly connected to the inner wall of the annular conical cover 693 with fasteners, providing stable mechanical support. Its protruding end is fixedly connected to the annular cover 697 with a vent. The annular cover 697 with a vent serves as the execution end for dynamic mixing and centrifugal slinging. Its outer edge has several circumferentially spaced turbulence stirring plates 698. Each turbulence stirring plate 698 is arranged in an outward oblique direction. This oblique structure can not only shear and turbulent the mixture inside the annular cavity temporary storage cylinder 691 during rotation, promoting the homogenization of acrylic acid and polymerization inhibitor, but also generate a propeller-like fluid thrust when the annular cover 697 rotates, forcibly discharging the mixture tangentially in all directions. It uses centrifugal force to accelerate the spray speed of the mixture, breaking the adhesion of high-viscosity materials and achieving efficient peeling and injection.

[0048] Specifically, the conical extension cylinder 699 is fixedly connected to the end face of the outlet annular cover 697. Its overall conical structure extends towards the interior of the cavity conveying housing 681, forming a rigid shaft for power transmission. A fourth conical gear head 6910 is fixedly installed on the output end of the conical extension cylinder 699. This fourth conical gear head 6910 meshes with the second conical gear head 684 inside the cavity conveying housing 681. On the inner ring edge of the annular cavity temporary storage cylinder 691, several obliquely extending pressure boosting valve heads 6912 are circumferentially connected. Each pressure boosting valve head 6912 faces one end of the turbulence stirring plate 698 at an oblique angle, so that the high-pressure polymerization inhibitor solution sprayed from the pressure boosting valve head 6912 directly impacts the surface of the high-speed rotating turbulence stirring plate 698. The oblique spray of the pressure boosting valve head 6912 and the rotation direction of the turbulence stirring plate 698 form a momentum coupling, and the reaction force of the fluid further promotes the rotation of the annular cover 697 of the leak, reducing the driving energy consumption. Secondly, in high viscosity media, through the tight coupling structure of internal spraying and external shearing, the polymerization inhibitor solution is dispersed by the rotating turbulence stirring plate 698 the moment it leaves the nozzle, realizing the premixing of polymerization inhibitor molecules and acrylic monomers, and suppressing the local self-polymerization of highly reactive monomers in a difficult diffusion environment.

[0049] The usage method provided by this invention is as follows: In use, the present invention establishes the flow field foundation inside the reactor body 1 by driving the main conveying rod module 5 through the bottom drive motor 7. The output end of the bottom drive motor 7 drives the shaft rotating rod 51, which is vertically installed at the bottom of the reactor body 1, to reciprocate 360 ​​degrees. In this state, the annular outer protrusion plate 64 on both sides of the surface of the shaft rotating rod 51 and the stirring baffle 67 perform initial stirring of the flow field inside the reactor body 1, so that the basic alcohol and acidic reaction raw materials introduced from the material replenishment port 2 are mixed, and the high viscosity reaction liquid is subjected to radial shearing and axial circulation, breaking the laminar dead zone of non-Newtonian fluid. At the same time, the servo motor 45 on the top sealed cover of the reactor body 1 starts, and the first assembly rod 46 at its output end passes through the center of the embedded cavity disc block 42, driving the second assembly rod 55 at the top of the main conveying rod module 5 to rotate synchronously. The first bevel gear head 57 at the bottom of the second assembly rod 55 meshes with the side of the third bevel gear head 685 in the auxiliary conveying block module 68, transmitting power to the third assembly rod 683 inside the cavity conveying housing 681, providing a power source for radial material mixing.

[0050] Acrylic acid and polymerization inhibitor solution are dynamically combined in the rotating secondary conveying block module 68. External acrylic acid is injected into the conveying chamber 52 through the sealing plug at the top of the sealing valve head 53, and flows into the interior of the two-sided cavity conveying housing 681 via the first reserved port 58. Meanwhile, the polymerization inhibitor solution is introduced through the first conveying hose 54, and merges inside the cavity conveying housing 681, connecting to the third conveying hose 6911, and is simultaneously conveyed to the inner annular position of the annular cavity temporary storage cylinder 691 of the mixing valve head mechanism 69. During this process, the second bevel gear head 684 on the outer surface of the third assembly rod 683 meshes with the fourth bevel gear head 6910 at the end of the conical extension cylinder 699.

[0051] When the material enters the annular cavity temporary storage cylinder 691, the third assembly rod 683 drives the second bevel gear head 684 to rotate, which in turn drives the fourth bevel gear head 6910 at the bottom of the bevel extension cylinder 699, causing the annular cover 697 to rotate at high speed inside the annular cavity temporary storage cylinder 691. The turbulence-dispersing plates 698 on the outer edge of the annular cover 697 are arranged in an outward oblique direction. During rotation, they generate a propeller-like fluid thrust, centrifugally dispersing the sprayed high-viscosity material. At the same time, the pressure-boosting valve head 6912 on the inner ring edge of the annular cavity storage cylinder 691 sprays the polymerization inhibitor solution at an oblique angle toward the turbulence-dispersing plates 698. The fluid reaction force helps to propel the rotation, and the solution is dispersed by the high-speed rotating turbulence-dispersing plates 698 the moment it leaves the nozzle, achieving real-time premixing of acrylic acid and polymerization inhibitor. Then, the first delivery pump 695 on the hard shell disc 694 is started to pressurize the mixing chamber, and the reagents that are forced to be premixed in real time are sprayed out through the conical end face of the annular conical cover 693.

[0052] While driving the stirring system below, the servo motor 45 drives the anti-adsorption fan group 47 at the end of the first assembly rod 46 to rotate at high speed at the bottom of the embedded cavity disc block 42, generating an upward axial flow force. This forcefully draws the rising water vapor and volatile components inside the reactor body 1 into the L-shaped cavity frame of the duct support frame 43, and then transfers them to the condensation and recovery system in real time through the external discharge pipe 44, preventing the vapor from accumulating above the liquid surface and affecting the reaction balance.

[0053] During the rotation of the third assembly rod 683, the stirring plate 67 of the stirring module 6 drives the bifurcated assembly frame 510 connected to it to rotate, causing the second magnetic ring 66 adsorbed by the first magnetic ring 59 on the outer side of the bifurcated assembly frame 510 to rotate synchronously. This, in conjunction with the stirring plate 67 on the outer side of the ring protrusion plate 64, forces the mixture ejected by the mixing valve head mechanism 69 into the main flow field of the reaction liquid phase. By utilizing centrifugal force and shear force, the acrylic acid is rapidly diluted, eliminating dead zones with excessively high local concentrations, and completing a continuous esterification reaction process of mixing, injection, and deep entrainment.

[0054] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An esterification reaction apparatus for preparing a water-reducing agent macromonomer, comprising a reactor body (1), wherein the top of the reactor body (1) is open, and a sealed top cover structure is bolted to the open end; the sealed top cover structure has several material replenishment ports (2) at its edge; and an outer reactor jacket sleeve (3) is fixedly connected to the outer surface of the reactor body (1), characterized in that: A bottom drive motor (7) is fixedly installed at the center of the outer bottom of the reactor body (1), and a main conveying rod module (5) is configured at the center of the inner bottom of the reactor body (1). The main conveying rod module (5) includes a limiting rotating shaft base sleeve (56), on which a central rotating rod (51) perpendicular to the inside of the reactor body (1) is movably installed, and the bottom of the central rotating rod (51) is connected to the output end of the bottom drive motor (7) to drive the central rotating rod (51) to rotate 360 ​​degrees back and forth. The inner top of the shaft (51) is provided with a conveying chamber (52) for conveying acrylic acid. Two sets of symmetrically arranged auxiliary conveying block modules (68) are assembled on the outer surface of the shaft (51). Each set of auxiliary conveying block modules (68) is equipped with several mixing valve head mechanisms (69), and each mixing valve head mechanism (69) is equipped with a third conveying hose (6911) for conveying the polymerization inhibitor solution. When the acrylic acid in the conveying chamber (52) enters each mixing valve head mechanism (69), it is mixed with the polymerization inhibitor solution in the third conveying hose (6911) and sprayed out. A stirring module (6) is provided on the outside of the auxiliary conveying block modules (68) for real-time mixing of the sprayed reagent below the reaction liquid surface.

2. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 1, characterized in that, A self-priming mechanism (4) is provided on the sealing top cover of the reactor body (1). A circular opening is provided at the center of the sealing top cover of the reactor body (1), and a circular frame sealing sleeve (41) is fixedly connected to the edge of the circular opening. The circular frame sealing sleeve (41) is a circular groove structure, and an embedded cavity disc block (42) is movably installed in the circular groove. The bottom surface of the embedded cavity disc block (42) faces the interior of the reactor body (1), and several circular openings are provided on its surface. The top of the embedded cavity disc block (42) is fixedly installed with a conduit support frame (43). The conduit support frame (43) is composed of several forked L-shaped cavity frames. The bottom of each forked L-shaped cavity frame is connected to the upper surface of the embedded cavity disc block (42). The top of each forked L-shaped cavity frame is connected to each other. An external discharge conduit (44) is fixedly installed on the connection end to transfer the rising steam drawn up from the bottom circular opening of the embedded cavity disc block (42) in real time.

3. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 2, characterized in that, The self-priming drive mechanism (4) also includes a servo motor (45) fixedly installed in the middle of the conduit support frame (43). The output end of the servo motor (45) faces the embedded cavity disc block (42) and a first assembly rod (46) is fixedly installed on the output end. The first assembly rod (46) passes through the center of the embedded cavity disc block (42) and enters the inner top of the reactor body (1). An anti-adsorption fan group (47) is fixedly installed on the end face of the embedded cavity disc block (42). The main conveying rod module (5) also includes a sealing valve head (53) fixedly installed on the top of the shaft rotating rod (51). A second assembly rod (55) is movably installed at the center of the sealing valve head (53). The top of the second assembly rod (55) is fixedly connected to the first assembly rod (46), and a first bevel gear head (57) is fixedly installed at the bottom of the second assembly rod (55).

4. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 3, characterized in that, The main conveying rod module (5) also includes a first reserved port (58) opened at a symmetrical position on the outer surface of the shaft rotating rod (51). The inner part of the conveying cavity (52) is movably installed with a first magnetic ring (59) with the same center at the outer edge of the first reserved port (58). A bifurcated assembly frame (510) is fixedly connected to the surface of each first magnetic ring (59). A second reserved port (511) aligned with the first reserved port (58) is opened at the center of the bifurcated assembly frame (510). A sealing plug is configured at the top outer edge of the sealing valve head (53) to add acrylic acid. A first conveying hose (54) is fixedly connected to the side of the sealing plug. The first conveying hose (54) penetrates into the inner bottom of the conveying cavity (52), and two second conveying hoses (513) are fixedly connected to the end of the first conveying hose (54) respectively fixedly installed on the bifurcated assembly frames (510) on both sides. A connecting pipe head (512) is fixedly connected to the end of each second conveying hose (513).

5. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 4, characterized in that, The stirring module (6) includes a ring frame (61) fixedly installed at the first reserved opening (58) on both sides of the outer surface of the shaft rotating rod (51). A ring-shaped diaphragm plate (63) is fixedly installed on the edge of the ring frame (61), and a ring-shaped outer protruding plate (64) is movably installed through the diaphragm plate (63). Several outwardly protruding plate structures are fixedly connected to the outer edge of the ring-shaped outer protruding plate (64), and a horizontally extending stirring strainer (67) is fixedly connected to each protruding plate structure. A second magnetic ring (66) is fixedly connected to the mating surface of the outer protruding plate (64) of the ring and the diaphragm plate (63). The second magnetic ring (66) is attracted to the first magnetic ring (59) through the diaphragm plate (63). A third reserved opening (62) aligned with the first reserved opening (58) is opened at the center of the ring frame (61). A fourth reserved opening (65) aligned with the third reserved opening (62) is opened at the center of the outer protruding plate (64).

6. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 5, characterized in that, The auxiliary conveying block module (68) includes a hollow conveying housing (681) fixedly connected to the center of the circular frame (61). A third assembly rod (683) is movably installed in the middle of the hollow conveying housing (681). A third bevel gear head (685) is fixedly connected to one end of the third assembly rod (683) near the shaft rotating rod (51). One end of the third bevel gear head (685) is placed in the conveying cavity (52) through the third reserved port (62) and meshes with the side of the first bevel gear head (57) in the conveying cavity (52). Several opposite fifth reserved ports (682) are opened sequentially on the upper and lower surfaces of the hollow conveying housing (681). A second bevel gear head (684) is fixedly installed on the third assembly rod (683) at the position of the fifth reserved port (682).

7. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 6, characterized in that, The actual mixing valve head mechanism (69) includes an annular cavity storage cylinder (691) fixedly installed on the outside of each fifth reserved port (682). The bottom of each annular cavity storage cylinder (691) is fixedly connected to a third delivery hose (6911). All the third delivery hoses (6911) are connected together inside the cavity delivery housing (681) and pass through the fourth reserved port (65), the third reserved port (62), and the first reserved port (58) into the delivery cavity (52), and are respectively assembled on the connecting pipe head (512) and connected to the second delivery hose (513). The side of the third assembly rod (683) that passes through the delivery cavity (52) is fixedly connected to the second reserved port (511).

8. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 7, characterized in that, The actual mixing valve head mechanism (69) also includes an annular guide rail (692) opened on the outer edge of the annular cavity temporary storage cylinder (691), and an annular conical cover (693) is movably installed on the outside of the annular cavity temporary storage cylinder (691) through the annular guide rail (692). The annular conical cover (693) is an outwardly contracting conical soft rubber structure and covers the outside of the annular cavity temporary storage cylinder (691). A hard shell disk (694) is fixedly connected to the outside of the annular conical cover (693), and a first delivery pump (695) is fixedly installed at the center of the hard shell disk (694).

9. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 8, characterized in that, The mixing valve head mechanism (69) also includes two oppositely arranged external extension rods (696) fixedly connected to the inner wall of each annular conical cover (693). The external extension rods (696) extend toward the center end of the annular cavity temporary storage cylinder (691), and a leak annular cover (697) is fixedly connected to the extended end. Several turbulence stirring plates (698) are arranged circumferentially at equal intervals on the outer edge of the leak annular cover (697), and each turbulence stirring plate (698) is arranged in an outward oblique extension shape. The bottom of the bottom drive motor (7) is fixedly installed with a discharge valve head (8).

10. The esterification reaction equipment for preparing water-reducing agent macromonomers according to claim 9, characterized in that, The actual mixing valve head mechanism (69) also includes a conical extension cylinder (699) fixedly connected to the end face of each leak ring cover (697). The conical extension cylinder (699) extends towards the inside of the cavity conveying housing (681), and a fourth conical gear head (6910) is fixedly installed on the output end. The fourth conical gear head (6910) meshes with the second conical gear head (684) inside the cavity conveying housing (681). A number of obliquely extending pressure valve body heads (6912) are circumferentially connected at equal intervals on the inner ring edge of the annular cavity temporary storage cylinder (691), and each obliquely extending pressure valve body head (6912) faces one end of the turbulence stirring plate (698).

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