Reaction kettle for polyester resin production burdening and use method of reaction kettle

Abstract

The invention discloses a reaction kettle for polyester resin production batching and a using method, and relates to the field of polyester resin production. The reaction kettle comprises a reaction kettle body, the reaction kettle body is formed by combining a plurality of sleeves, and a stirring mechanism is installed in the middle of the reaction kettle body; the stirring mechanism comprises a multi-section fixed cylinder, a connecting column, a positioning cover, an ejector rod, a stirring frame, a rotating rod, a stirring blade and a rack, and the multi-section fixed cylinder is mounted in the reaction kettle body. Through cooperation of the multi-section reaction kettle body and the multi-section fixed cylinder, materials can be added into each section of sleeve from the auxiliary material port, stirring is performed through a stirring frame and stirring blades in the stirring mechanism, the multi-section reaction kettle body rises along with the change of the liquid level along with continuous adding of the materials, the multi-section fixed cylinder is driven to synchronously rise upwards, and the materials can be uniformly mixed. The structure firstly performs local stirring and then performs overall stirring, and the feeding position is changed, so that the material stirring effect is effectively improved.

Description

TECHNICAL FIELD

[0001] The application relates to the polyester resin production field, in particular to a reaction kettle for batching polyester resin production and a use method. BACKGROUND

[0002] The polyester resin is a high molecular compound collectively referred to by dihydric alcohol or diacid or polyhydric alcohol and polyacid polycondensation, and the polyester resin is divided into saturated polyester resin and unsaturated polyester resin; the unsaturated polyester adhesive is mainly composed of unsaturated polyester resin, pigment filler, initiator and other additives; the adhesive has small viscosity, easy wetting and good process performance; the adhesive layer after curing has large hardness, good transparency, high brightness, good heat resistance, excellent electrical performance; the shortcomings are large shrinkage, low adhesive toughness, poor chemical medium resistance and water resistance, and the polyester resin is used for non-structural adhesive. The polyester resin is mainly used for gluing glass steel, hard plastic, concrete and electrical tank sealing.

[0003] The dihydric acid and dihydric alcohol are added into the reaction kettle according to a certain molar ratio, appropriate catalyst and polymerization inhibitor are added, the temperature is increased to 180-220 DEG C, esterification reaction is carried out, the reaction is an exothermic reaction, the reaction temperature needs to be controlled to avoid local overheating, the water generated in the reaction process needs to be discharged in time to maintain the acidity of the reaction system, and the esterification reaction generally needs 4-6 hours.

[0004] When the dihydric acid and dihydric alcohol are added into the reaction kettle, the dihydric acid, dihydric alcohol and catalyst and other reactants need to be fully mixed; if the reactants are not fully mixed, part of the reactants may not react in time, thereby affecting the generation quality and generation efficiency of the polyester resin when the next process is carried out; and a common fully mixing mode is to add a stirring mechanism in the inside of the reaction kettle, and the reactants are fully mixed through rotation of the stirring mechanism.

[0005] Common stirring mechanisms are stirring blades, and the materials are mostly added into the reaction kettle in fixed positions; the ordinary stirring blades are difficult to stir different materials to different positions of the reaction kettle, thereby possibly affecting the reaction quality of the materials in the inside of the reaction kettle. SUMMARY

[0006] Based on this, the purpose of the application is to provide a reaction kettle for batching polyester resin production and a use method, so as to solve the technical problem that ordinary stirring blades are difficult to stir different materials to different positions of the reaction kettle.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a kind of reaction kettle for polyester resin production batching, including reaction kettle body, the reaction kettle body is made of multiple sleeve combinations, stirring mechanism is installed in the middle of the reaction kettle body, the stirring mechanism includes multiple fixed cylinder, connecting column, positioning cover, ejector rod, stirring frame, rotating rod, stirring blade and rack, the multiple fixed cylinder is installed in the inside of reaction kettle body, a set of stirring frame is installed on the outer wall of each fixed cylinder of the multiple fixed cylinder, connecting column is installed in the inside of the multiple fixed cylinder, rack is provided on the outer wall of the connecting column, the top of the multiple fixed cylinder is fixedly provided with ejector rod, the top of the connecting column is fixedly provided with positioning cover, one end of the stirring frame is rotatably connected with rotating rod, one end of the rotating rod extends to the inside of the multiple fixed cylinder, and is engaged with rack by gear, one end of the rotating rod extends to the inside of stirring frame and is connected with stirring blade, auxiliary material port is formed on the outer wall of each sleeve of the reaction kettle body.

[0008] The present application further provides that the outer wall of the bottommost sleeve of the reaction kettle body is provided with a plurality of telescopic cylinders, and the movable end of the telescopic cylinder is connected with the topmost sleeve.

[0009] The present application further provides that the outer wall of the bottommost sleeve of the reaction kettle body is provided with a plurality of telescopic cylinders, and the movable end of the telescopic cylinder is connected with the topmost sleeve.

[0010] The present application further provides that the outer wall of the rotating rod is provided with a plurality of limiting grooves, and the contact surface of the multiple fixed cylinder and the rotating rod is provided with a spring piece, which cooperates with the limiting groove.

[0011] The present application further provides that the connecting column is connected with the bottommost fixed cylinder of the multiple fixed cylinder through a fixed spring.

[0012] The present application further provides that the connecting column is connected with the bottommost fixed cylinder of the multiple fixed cylinder through a fixed spring.

[0013] The present application further provides that a sealing layer is provided between each sleeve of the reaction kettle body, and an inclined surface is formed on the top surface of each sleeve.

[0014] The present application further provides that the topmost sleeve of the reaction kettle body is provided with a feeding port, and the bottommost sleeve is provided with a discharging port.

[0015] The present application further provides that the bottom of the reaction kettle body is provided with a motor, and the output end of the motor is connected with the stirring mechanism.

[0016] The application relates to a method for using a reaction kettle for producing a polyester resin production ingredient, and the specific operation steps are as follows: Step one: after the raw materials of diacid and dihydric alcohol are added into the reaction kettle body, the catalyst and the polymerization inhibitor are added through the auxiliary material port; at this time, the stirring frame and the stirring blade in the inclined state stir each layer of the multi-section sleeve of the reaction kettle body; Step two: as the raw materials are added, the liquid level rises; at this time, the reaction kettle body and the multi-section fixed cylinder move upwards synchronously until the positioning cover and the connecting column are lifted upwards by the jacks; at this time, the stirring blade is turned into a vertical state, and the stirring frame is used to stir the whole raw materials; Step three: after the stirring is completed, the materials are discharged.

[0017] According to the application, the multi-section reaction kettle body and the multi-section fixed cylinder are matched, the materials can be added into each section sleeve through the auxiliary material port and are stirred through the stirring frame and the stirring blade in the stirring mechanism; as the materials continue to be added, the multi-section reaction kettle body rises along with the change of the liquid level, drives the multi-section fixed cylinder to synchronously rise upwards, until the jacks contact the positioning cover, synchronously lift the positioning cover and the connecting column upwards, at this time, the rack on the surface of the connecting column contacts the gear part of the rotating rod, drives the rotating rod to rotate, controls the stirring blade to rotate, and makes the stirring blade seal the surface of the stirring frame, so that the stirring frame becomes a complete stirring fan blade to perform overall stirring; the above structure first performs local stirring, then performs overall stirring, and changes the feeding position, effectively improves the stirring effect of the materials. DETAILED DESCRIPTION

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the application; Figure 2 It is a schematic diagram of the internal structure of the application; Figure 3 It is a sectional view of the internal structure of the multi-section fixed cylinder of the application; Figure 4 It is a schematic diagram of the external structure of the multi-section fixed cylinder of the application; Figure 5 It is a schematic diagram of the structure connection of the stirring blade of the application; Figure 6 It is an enlarged view of the structure at A of the application; Figure 3 Figure 7 It is an enlarged view of the structure at B of the application; Figure 4

[0019] ​​In the figure: 1, reaction kettle body; 2, telescopic cylinder; 3, multi-section fixed cylinder; 4, connecting column; 5, positioning cover; 6, ejector rod; 7, stirring frame; 8, rotating rod; 9, chain transmission mechanism; 10, connecting rod; 11, stirring blade; 12, rack; 13, limiting groove; 14, positioning spring; 15, feed inlet; 16, discharge outlet; 17, auxiliary material inlet; 18, guide rod; 19, inclined surface; 20, motor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0021] A kind of reaction kettle for polyester resin production batching and method for using, as shown in Figures 1-7 shown, including reaction kettle body 1, the bottom of reaction kettle body 1 is equipped with motor 20, and the output end of motor 20 is connected with stirring mechanism, reaction kettle body 1 is combined by multiple sleeves, sealing layer is arranged between each sleeve of reaction kettle body 1, and the top surface of each sleeve is provided with inclined surface 19, inclined surface 19 can prevent material accumulation in the inside of sleeve, sealing layer can improve the sealing effect between sleeves, the outer wall of the bottommost sleeve of reaction kettle body 1 is equipped with multiple telescopic cylinders 2, and the movable end of telescopic cylinder 2 is connected with the topmost sleeve, the outer wall of the bottommost sleeve of reaction kettle body 1 is equipped with multiple guide rods 18, and the movable end of guide rod 18 is connected with the topmost sleeve, positioning spring 14 is installed between each fixed cylinder of reaction kettle body 1, start telescopic cylinder 2, the topmost sleeve moves upward, under the action of positioning spring 14, the topmost sleeve will drive the bottom sleeve to move upward synchronously, guide rod 18 limits and guides the movement of sleeve.

[0022] The sleeve lifting of reaction kettle body 1 is adjusted according to the change of internal liquid level, the topmost sleeve of reaction kettle body 1 is provided with feed inlet 15, and the bottommost sleeve is provided with discharge outlet 16, the outer wall of each sleeve of reaction kettle body 1 is provided with auxiliary material inlet 17, a large amount of material such as diacid and diol is added from feed inlet 15, auxiliary material inlet 17 adds catalyst and polymerization inhibitor through pump body, and the material after reaction is discharged from discharge outlet 16.

[0023] Stirring mechanism is installed in the middle of reaction kettle body 1, which includes multiple fixed cylinders 3, the multiple fixed cylinders 3 are installed in the inside of reaction kettle body 1, a group of stirring frames 7 is installed on the outer wall of each fixed cylinder of multiple fixed cylinders 3, each stirring frame 7 corresponds to each sleeve of reaction kettle body 1, so that each sleeve and stirring frame 7 constitute a stirring unit when material is added through auxiliary material inlet 17, and the stirring frame 7 can stir the material in the inside; With the addition of material, the liquid level inside the reactor body 1 will rise, at this time the stirring frame 7 also changes with the rising of the liquid level, in order to adapt to the rising of the liquid level, at this time the multi-section sleeve of the reactor body 1 moves upward under the action of the telescopic cylinder 2, the inside of the multi-section fixed cylinder 3 is provided with a connecting column 4, the outer wall of the connecting column 4 is provided with a rack 12, the top of the multi-section fixed cylinder 3 is fixedly provided with a top rod 6, the top of the connecting column 4 is fixedly provided with a positioning cover 5, one end of the stirring frame 7 is rotatably connected with a rotating rod 8, one end of the rotating rod 8 extends to the inside of the multi-section fixed cylinder 3 and is engaged with the rack 12 through a gear, one end of the rotating rod 8 extends to the inside of the stirring frame 7 and is connected with a stirring blade 11, the bottom of the connecting column 4 is connected with the bottommost fixed cylinder of the multi-section fixed cylinder 3 through a fixed spring, when the multi-section sleeve expands upward, the multi-section fixed cylinder 3 also expands upward until the top rod 6 contacts the positioning cover 5, the positioning cover 5 and the connecting column 4 are lifted upward, at this time the rack 12 contacts the gear on the outer wall of the rotating rod 8 to engage, the rotating rod 8 is controlled to rotate, the outer wall of the rotating rod 8 is provided with a chain transmission mechanism 9, the sprocket of the chain transmission mechanism 9 is provided with a connecting rod 10, the stirring blade 11 is mounted on the outer wall of the connecting rod 10, so when the rotating rod 8 rotates, the chain transmission mechanism 9 rotates, driving the connecting rod 10 to rotate and the stirring blade 11 to rotate; The initial state of the stirring blade 11 in the stirring frame 7 is an inclined state, which can fully mix the upper and lower liquid levels during stirring together with the stirring frame 7, and after the reactor body 1 and the multi-section fixed cylinder 3 are fully expanded upward, the stirring blade 11 changes from the inclined state to the vertical state and forms a complete plate-shaped stirring fan blade with the stirring frame 7, at this time all the raw materials in the reactor body 1 are repeatedly stirred.

[0024] The chain transmission mechanism 9 is located in the inside of the stirring frame 7 and is limited by the inner wall of the stirring frame 7, so that it does not come off during work.

[0025] Further, a plurality of limiting grooves 13 are formed in the outer wall of the rotating rod 8, the contact surface of the multi-section fixed cylinder 3 and the rotating rod 8 is provided with an elastic sheet, and the elastic sheet cooperates with the limiting grooves 13, so that when the rotating rod 8 rotates to the corresponding position, the elastic sheet will be clamped into the limiting groove 13 to limit the rotating rod 8, preventing the rotating rod 8 from rotating during subsequent stirring work.

[0026] As shown in the figure, the multi-section fixed cylinder 3 is driven upward by the protrusion, and each section of the multi-section fixed cylinder 3 is connected with a synchronous spring, which can synchronously pull the bottom fixed cylinder upward when the topmost fixed cylinder moves upward; When the position of the reactor body 1 and the multi-section fixed cylinder 3 is reset, the connecting column 4 will be reset under the action of the fixed spring.

[0027] The above structure first carries out layered stirring on the raw materials in the inner sleeve of each section of the reactor body 1 by the stirring blade 11 and the stirring frame 7 in the inclined state, and then the reactor body 1 is unfolded, and the stirring blade 11 and the stirring frame 7 in the vertical state stir the whole raw materials, and the problem that the raw materials cannot be fully stirred after being added is effectively prevented.

[0028] Although the embodiments of the present application have been shown and described, the specific embodiments are merely illustrative of the present application, and are not intended to limit the present application, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and those skilled in the art can make modifications, replacements and variations of the embodiments without creative contribution after reading the specification, as long as they are within the scope of the claims of the present application.

Claims

1. A reaction vessel for batching ingredients in polyester resin production, comprising a reaction vessel body (1), characterized in that: The reactor body (1) is composed of multiple sleeves. A stirring mechanism is installed in the middle of the reactor body (1). The stirring mechanism includes multiple fixed cylinders (3), connecting columns (4), positioning covers (5), top rods (6), stirring frames (7), rotating rods (8), stirring blades (11), and racks (12). The multiple fixed cylinders (3) are installed inside the reactor body (1). Each fixed cylinder has a set of stirring frames (7) installed on its outer wall. The connecting columns (4) are installed inside the multiple fixed cylinders (3). 4) The outer wall is provided with a rack (12), the top of the multi-section fixed cylinder (3) is fixedly provided with a top rod (6), the top of the connecting column (4) is fixedly provided with a positioning cover (5), one end of the stirring frame (7) is rotatably connected with a rotating rod (8), one end of the rotating rod (8) extends into the interior of the multi-section fixed cylinder (3) and meshes with the rack (12) through a gear, one end of the rotating rod (8) extends into the interior of the stirring frame (7) and is connected with a stirring blade (11), and each sleeve of the reactor body (1) is provided with an auxiliary material port (17).

2. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: The outer wall of the bottom sleeve of the reactor body (1) is equipped with multiple telescopic cylinders (2), and the movable end of the telescopic cylinder (2) is connected to the top sleeve. The outer wall of the bottom sleeve of the reactor body (1) is equipped with multiple guide rods (18), and the movable end of the guide rods (18) is connected to the top sleeve.

3. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: A chain drive mechanism (9) is installed on the outer wall of the rotating rod (8), and a connecting rod (10) is installed inside the sprocket of the chain drive mechanism (9). The stirring blade (11) is installed on the outer wall of the connecting rod (10).

4. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: The outer wall of the rotating rod (8) is provided with multiple limiting grooves (13), and the contact surface between the multi-section fixed cylinder (3) and the rotating rod (8) is equipped with a spring piece, and the spring piece cooperates with the limiting groove (13).

5. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: Positioning springs (14) are installed between each section of the fixed cylinder of the reactor body (1).

6. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: The bottom of the connecting column (4) is connected to the bottommost fixed cylinder of the multi-section fixed cylinder (3) by a fixed spring.

7. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: Each section of the reactor body (1) is provided with a sealing layer, and the top surface of each section of the reactor body (1) is provided with an inclined surface (19).

8. The reaction vessel for batching polyester resin production according to claim 1, characterized in that: The top sleeve of the reactor body (1) has a feed inlet (15), and the bottom sleeve has a discharge outlet (16).

9. The reaction vessel for polyester resin production and its method of use according to claim 1, characterized in that: The bottom of the reactor body (1) is equipped with a motor (20), and the output end of the motor (20) is connected to the stirring mechanism.

10. A method of using a reaction vessel for batching ingredients in polyester resin production, comprising the reaction vessel for batching ingredients in polyester resin production as described in any one of claims 1-9, characterized in that: The specific operating steps are as follows: Step 1: After adding the raw materials of dicarboxylic acid and diol to the reactor body (1), add the catalyst and polymerization inhibitor through the auxiliary material port (17). At this time, the stirring frame (7) and the inclined stirring blade (11) stir each layer of the multi-section sleeve of the reactor body (1). Step 2: As the raw materials are added, the liquid level rises accordingly. At this time, the reactor body (1) and the multi-section fixed cylinder (3) move upward synchronously until the top rod (6) lifts the positioning cover (5) and the connecting column (4) upward. At this time, the stirring blade (11) turns into a vertical state and works with the stirring frame (7) to stir the entire raw materials. Step 3: After mixing is complete, the material is discharged.

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