Pre-reaction system for polymerization reaction and automatic batching device of pre-reaction system

Abstract

The invention discloses a pre-reaction system for polymerization reaction and an automatic batching device thereof, and relates to the technical field of polymerization reaction, the pre-reaction system comprises two groups of pre-reaction cylinders symmetrically arranged on a reaction kettle; a feeding pipe is arranged at the top of the pre-reaction cylinder, discharging pipes are arranged at the bottom of the pre-reaction cylinder, and a first electromagnetic valve is arranged between the discharging pipes; a first storage barrel for storing reaction raw materials and a second storage barrel for storing catalysts are symmetrically arranged on the reaction kettle, and conveying pipes corresponding to the feeding pipes are arranged at the bottoms of the first storage barrel and the second storage barrel; an adjusting module is arranged at the bottom of the conveying pipe and used for adjusting opening or closing of the conveying pipe. The pre-reaction cylinders on the two sides are connected with a rotating module for driving the pre-reaction cylinders to rotate around the axis of the reaction kettle; by arranging the two groups of pre-reaction cylinders, two groups of pre-reaction processes can be simultaneously carried out at one time, so that the pre-reaction efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of polymerization reaction, in particular to a polymerization reaction pre-reaction system and an automatic batching device thereof. Background Art

[0002] Polymerization reaction refers to the process of converting low molecular weight monomers into high molecular weight polymers through chemical bonds. This high molecular compound is composed of one or more structural units repeatedly connected, and has important properties such as plasticity, fiber formation, film formation, high elasticity, etc. that low molecular weight monomers do not have. It can be widely used as plastics, fibers, rubbers, coatings, adhesives and other purposes.

[0003] Pre-reaction steps play a vital role in polymerization reactions. They can ensure that the polymerization reaction is carried out under optimal conditions, reduce the occurrence of side reactions, and improve the quality and purity of the product. At the same time, the pre-reaction device uses the principles of chemical reaction kinetics to promote the chemical reaction between the reactants and the catalyst by providing appropriate reaction conditions (such as temperature, pressure, concentration, etc.). In the pre-reaction stage, the reactants usually undergo preliminary reactions at lower temperatures and pressures to form intermediate products or active centers, preparing for the subsequent main reaction stage.

[0004] Polymerization reactions are usually accompanied by the release of a large amount of heat. However, in the prior art, all raw materials and catalysts to be subjected to the polymerization reaction are usually transported to the pre-reaction device at one time, which causes the temperature of the pre-reaction device to rise sharply and easily reach an uncontrollable state, thereby generating by-products and affecting the reaction quality. Summary of the invention

[0005] The object of the present invention is to provide a pre-reaction system for polymerization reaction and an automatic batching device thereof, so as to solve the following technical problems:

[0006] Adding too much reaction raw material at one time will cause the temperature of the pre-reaction device to rise sharply, affecting the reaction quality.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A pre-reaction system for a polymerization reaction comprises two groups of pre-reaction cylinders symmetrically arranged on a reactor; a feed pipe is arranged on the top of the pre-reaction cylinder, a discharge pipe is arranged on the bottom thereof, and a first solenoid valve is arranged between the discharge pipes;

[0009] The reactor is symmetrically provided with a first storage barrel for storing reaction raw materials and a second storage barrel for storing catalysts, and the bottoms of the first storage barrel and the second storage barrel are both provided with a conveying pipe corresponding to the feeding pipe;

[0010] Wherein, an adjustment module is provided at the bottom of the feed pipe to adjust the opening or closing of the feed pipe;

[0011] The pre-reaction cylinders on both sides are connected to a rotating module which drives them to rotate around the axis of the reaction kettle.

[0012] Preferably, a discharge pipe is provided at the bottom end of the reactor, and a second solenoid valve is provided between the discharge pipes.

[0013] Preferably, a base is fixedly arranged on one side of the reactor, a mounting frame is fixedly arranged on the base, a top frame is fixedly arranged on the end of the mounting frame away from the base, a support plate is fixedly arranged on the top frame toward the axis of the reactor, a servo motor is fixedly arranged on the end of the support plate, a turntable is fixedly arranged at the output end of the servo motor, and pre-reaction cylinders on both sides are arranged on both sides of the turntable.

[0014] Preferably, the adjustment module comprises a baffle plate slidably arranged at the bottom of the feed pipe, an arc groove is provided on the side close to the baffle plates on both sides, the arc groove is a semicircular groove for fitting with the feed pipe orifice, and the baffle plate is connected to the elastic module arranged on the feed pipe;

[0015] Wherein, the pre-reaction cylinders on both sides are connected to a driving mechanism to drive the pre-reaction cylinders to move linearly along the radial direction of the rotating disk.

[0016] Preferably, the elastic module comprises a guide rod fixedly arranged on the material conveying pipe, and a side plate slidably connected to the guide rod is fixedly arranged on one side of the baffle plate;

[0017] Wherein, a first spring is arranged on the guide rod.

[0018] Preferably, the pushing mechanism comprises a guide ring fixedly arranged on the reactor, the setting height of the guide ring corresponds to the height of the discharge pipe, a notch is provided on one side of the guide ring corresponding to the first storage barrel and the second storage barrel, and an inclined guide plate is fixedly arranged at the notch along the rotation direction of the pre-reaction barrel;

[0019] Wherein, sleeves are fixedly arranged on both sides of the turntable, and a telescopic rod is slidably inserted and arranged on the other end of the sleeve. The other end of the telescopic rod is fixed to a push plate fixedly arranged on the pre-reaction cylinder, and a second spring is arranged on the telescopic rod.

[0020] Preferably, a sealing cover is rotatably arranged on the reactor, through grooves are respectively provided on both sides of the sealing cover, a slide groove is provided at the bottom of the through groove, and a cover plate for sealing the through groove is slidably arranged in the slide groove;

[0021] Wherein, a through opening is provided on the cover plate, and the discharge pipe is fixed on the cover plate and communicated with the through opening.

[0022] Preferably, a stirring motor is fixedly arranged on the sealing cover, an output end of the stirring motor is fixed to a rotating rod arranged in the reaction kettle, and a plurality of groups of stirring rods are evenly fixedly arranged on the rotating rod.

[0023] An automatic batching device for a pre-reaction system of a polymerization reaction comprises a metering cylinder fixedly arranged between a feeding pipe and a material storage cylinder, a metering roller is rotatably arranged in the metering cylinder, the outer wall of the metering roller is slidably fitted with the inner wall of the metering cylinder, and a metering groove is provided on the metering roller;

[0024] Wherein, the metering roller is connected to a rotating mechanism which drives the metering roller to rotate.

[0025] Preferably, the rotating mechanism comprises gears symmetrically arranged on both sides of the metering drum, the gears and the metering roller are fixed by a rod body, racks meshing with the gears are slidably arranged on both sides of the metering drum, the racks on both sides are fixed to a T-shaped plate by a connecting frame, and the setting height of the T-shaped plate corresponds to the height of the push plate;

[0026] Wherein, a limiting rod is fixedly arranged on the outer side of the metering cylinder, the T-shaped plate is slidably connected to the limiting rod, and a third spring is arranged on the limiting rod.

[0027] Beneficial effects of the present invention:

[0028] (1) The present invention firstly drives the pre-reaction barrels on both sides to rotate to the bottom of the first storage barrel and the second storage barrel respectively through the rotating module, so that the conveying pipes at the bottom of the storage barrels on both sides correspond to the feeding pipes on the pre-reaction barrels, and opens the conveying pipes through the adjusting module, so that the reaction raw materials and catalysts in the first storage barrel and the second storage barrel fall into the pre-reaction barrels on both sides through the feeding pipes respectively. After the dropping is completed, the conveying pipes are adjusted to be closed by the adjusting module, and then the pre-reaction barrels on both sides are driven to rotate 180 degrees around the axis of the reactor by the rotating module, so that the positions of the pre-reaction barrels on both sides are interchanged. At this time, the conveying pipes are opened again by the adjusting module, so that the reaction raw materials and catalysts in the first storage barrel and the second storage barrel fall into the pre-reaction barrels on both sides through the feeding pipes respectively. At this time, the reaction raw materials and catalysts are input into the pre-reaction barrels on both sides, and the conveying pipes are adjusted to be closed by the adjusting module again. The rotating module drives the pre-reaction barrels on both sides to rotate 90 degrees around the axis. After the reaction raw materials and catalysts react in the pre-reaction barrels for a period of time, the first solenoid valve is opened to discharge the reaction products into the reactor;

[0029] (2) The present invention provides two sets of pre-reaction barrels, so that two sets of pre-reaction processes can be carried out at the same time, which effectively improves the pre-reaction efficiency. Since the amount of material in the pre-reaction barrel for each reaction is small, overheating caused by adding at one time is avoided, and the stability of the reaction is ensured. In addition, the present invention can realize automatic loading and discharging, and does not require manual loading, thereby improving the polymerization reaction efficiency and safety.

[0030] (3) In the initial state of the present invention, the discharge pipe at the bottom of the pre-reaction barrel slides and fits with the inner edge surface of the guide ring. Based on the setting of the guide ring, the telescopic rod is in a contracted state on one side of the sleeve. At this time, the second spring contracts synchronously. As the rotating module drives the pre-reaction barrel to rotate to the side of the notch, the discharge pipe can be free from the restriction of the guide ring. Under the action of elastic force, the second spring drives the pre-reaction barrel to move in a direction away from the axis through the telescopic rod and the push plate until it moves to the coaxial direction of the feed pipe and the delivery pipe. After the delivery is completed, as the rotating module continues to drive the pre-reaction barrel to move, the discharge pipe can continue to move to the inside of the guide ring under the restriction of the inclined guide plate, and so on. The present invention can automatically complete the loading in the process of driving the pre-reaction barrel to rotate, without the need to use other servo drive equipment or manual control, and is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] Figure 1 It is a structural schematic diagram of a pre-reaction system of a polymerization reaction of the present invention;

[0033] Figure 2 It is a structural schematic diagram of a material storage barrel in a pre-reaction system of a polymerization reaction of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a metering cylinder in a pre-reaction system of a polymerization reaction of the present invention;

[0035] Figure 4 It is a schematic cross-sectional structure diagram of a pre-reaction system for a polymerization reaction of the present invention;

[0036] Figure 5 It is a structural schematic diagram of a sleeve in a pre-reaction system of a polymerization reaction of the present invention;

[0037] Figure 6 The structure diagram of the pre-reaction cylinder rotating in the pre-reaction system of a polymerization reaction of the present invention is shown in FIG. Figure 1 ;

[0038] Figure 7 The structure diagram of the pre-reaction cylinder rotating in the pre-reaction system of a polymerization reaction of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 8 It is a structural schematic diagram of a sealing cover in a pre-reaction system of a polymerization reaction of the present invention.

[0040] In the figure: 1, base; 2, reactor; 3, first storage barrel; 4, pre-reaction barrel; 5, servo motor; 6, material blocking plate; 101, mounting frame; 102, top frame; 103, support plate; 201, discharge pipe; 202, second solenoid valve; 203, sealing cover; 204, guide ring; 205, rotating rod; 206, stirring motor; 207, through groove; 208, cover plate; 209, through port; 210, slide groove; 211, notch; 212, inclined guide plate; 213, limit plate; 301, second storage barrel; 302, metering Cylinder; 303, gear; 304, rack; 305, connecting frame; 306, T-plate; 307, limit rod; 308, third spring; 401, first solenoid valve; 402, discharge pipe; 403, feed pipe; 501, turntable; 502, sleeve; 503, connecting rod; 504, reserved groove; 505, telescopic rod; 506, second spring; 507, push plate; 601, arc groove; 602, side plate; 603, guide rod; 604, first spring; 605, feed pipe; 606, metering roller; 607, metering groove. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1

[0043] See also Figure 1 As shown, the present invention is a pre-reaction system for a polymerization reaction, comprising two groups of pre-reaction cylinders 4 symmetrically arranged on a reactor 2; specifically, in this embodiment, by setting two groups of pre-reaction cylinders 4, chemical materials can be divided into two groups for pre-reaction, thereby improving the pre-reaction efficiency. After the pre-reaction is completed, the intermediate product formed by the pre-reaction can be transported to the reactor 2 for formal reaction.

[0044] In addition, this embodiment does not limit the model of the reactor 2 and the size of the pre-reaction cylinder 4, as long as they meet the actual polymerization reaction requirements.

[0045] See also Figure 4-Figure 5 A feed pipe 403 is provided at the top of the pre-reaction barrel 4, a discharge pipe 402 is provided at the bottom thereof, and a first solenoid valve 401 is provided between the discharge pipes 402; specifically, in this embodiment, when the polymerization reaction is carried out, the first solenoid valve 401 is closed, and the reaction raw materials or catalysts are input into the pre-reaction barrel 4 through the feed pipe 403. After a period of pre-reaction, the first solenoid valve 401 is opened, and the intermediate products produced are discharged from the discharge pipe 402.

[0046] In this embodiment, please refer to Figure 1-Figure 3 The reactor 2 is symmetrically provided with a first storage barrel 3 for storing reaction raw materials and a second storage barrel 301 for storing catalysts. The bottoms of the first storage barrel 3 and the second storage barrel 301 are both provided with a delivery pipe 605 corresponding to the feed pipe 403; wherein an adjustment module is provided at the bottom of the delivery pipe 605 to adjust the opening or closing of the delivery pipe 605;

[0047] Furthermore, the pre-reaction barrels 4 on both sides are connected to a rotating module that drives them to rotate around the axis of the reactor 2; it can be explained that in this embodiment, the pre-reaction barrels 4 on both sides are first driven by the rotating module to rotate to the bottom of the first storage barrel 3 and the second storage barrel 301 respectively, so that the delivery pipes 605 at the bottom of the storage barrels on both sides correspond to the feeding pipes 403 on the pre-reaction barrel 4, and the delivery pipes 605 are opened by the adjusting module to allow the reaction raw materials and catalysts in the first storage barrel 3 and the second storage barrel 301 to fall into the pre-reaction barrels 4 on both sides through the feeding pipes 403 respectively. After the material dropping is completed, the delivery pipes 605 are adjusted to be closed by the adjusting module, and then the pre-reaction barrels 4 on both sides are driven by the rotating module to rotate 180 degrees around the axis of the reactor 2 (see Figure 6 ), so that the positions of the pre-reaction barrels 4 on both sides are interchanged, and at this time, the feed pipe 605 is opened again by the adjustment module, so that the reaction raw materials and catalysts in the first storage barrel 3 and the second storage barrel 301 fall into the pre-reaction barrels 4 on both sides through the feed pipe 403 respectively. At this time, the reaction raw materials and catalysts are input into the pre-reaction barrels 4 on both sides, and the feed pipe 605 is adjusted to be closed again by the adjustment module, and the rotation module drives the pre-reaction barrels 4 on both sides to rotate 90 degrees around the axis (see Figure 7 ), after the reaction raw materials and the catalyst react in the pre-reaction cylinder 4 for a period of time, the first solenoid valve 401 is opened to discharge the reaction product into the reaction kettle 2;

[0048] Correspondingly, the above steps are repeated again to discharge multiple groups of reaction products into the reactor 2 in turn. When the amount of material in the reactor 2 reaches a preset value, the reactor 2 is opened for formal reaction. In this embodiment, two groups of pre-reaction barrels 4 are set up, and two groups of pre-reaction processes can be carried out at the same time, which effectively improves the pre-reaction efficiency. Since the amount of material in the pre-reaction barrel 4 for each reaction is small, overheating caused by one-time addition is avoided, thereby ensuring the stability of the reaction. In addition, this embodiment can realize automatic loading and discharging, without the need for manual loading, thereby improving the efficiency and safety of the polymerization reaction.

[0049] Example 2

[0050] Based on Example 1, please refer to Figure 1A discharge pipe 201 is provided at the bottom end of the reactor 2, and a second solenoid valve 202 is provided between the discharge pipes 201; specifically, when the material is completely reacted in the reactor 2, the second solenoid valve 202 is opened to discharge the product after the reaction through the discharge pipe 201.

[0051] In this embodiment, a base 1 is fixedly arranged on one side of the reactor 2, a mounting frame 101 is fixedly arranged on the base 1, a top frame 102 is fixedly arranged on the end of the mounting frame 101 away from the base 1, a support plate 103 is fixedly arranged on the top frame 102 toward the axis of the reactor 2, a servo motor 5 is fixedly arranged on the end of the support plate 103, a turntable 501 is fixedly arranged on the output end of the servo motor 5, and the pre-reaction barrels 4 on both sides are arranged on both sides of the turntable 501; it can be explained that when driving the pre-reaction barrels 4 on both sides to rotate, the servo motor 5 is started to drive the turntable 501 to rotate, and the turntable 501 can synchronously drive the pre-reaction barrels 4 on both sides to rotate during the rotation process.

[0052] As a further solution of this embodiment, please refer to Figure 2-Figure 4 The regulating module includes a baffle plate 6 slidably arranged at the bottom of the feed pipe 605, and an arc groove 601 is provided on the side close to the baffle plates 6 on both sides. The arc groove 601 is a semicircular groove for engaging with the mouth of the feed pipe 403. The baffle plate 6 is connected to the elastic module arranged on the feed pipe 605, wherein the pre-reaction barrels 4 on both sides are connected to the pushing mechanism to drive the pre-reaction barrels 4 to move linearly along the radial direction of the turntable 501; it can be explained that in the initial state, the baffle plate 6 is in a sealing state for the feed pipe 605, and the raw material or catalyst cannot be discharged from the feed pipe 605. When the rotating module drives the pre-reaction barrels 4 on both sides to move to one side of the storage barrel, the pushing mechanism pushes the pre-reaction barrels 4 to move linearly along the radial direction of the turntable 501. The movable pre-reaction barrel 4 moves along the radial direction of the turntable 501 toward the storage barrel. When the feed pipe 403 on the pre-reaction barrel 4 is engaged with the arc groove 601 on the baffle plate 6, as the pre-reaction barrel 4 continues to move, the baffle plate 6 can be pushed to deviate toward one side of the delivery pipe 605, so that the feed pipe 403 can be gradually connected with the delivery pipe 605, and the chemical raw materials or catalysts in the storage barrel can be discharged into the pre-reaction barrel 4 through the delivery pipe 605 and the feed pipe 403 under the action of gravity. At this time, the elastic module generates elastic force. After the feeding is completed, as the pushing mechanism drives the pre-reaction barrel 4 to gradually reset, the elastic module can drive the baffle plate 6 to reset to seal the delivery pipe 605 again.

[0053] The elastic module includes a guide rod 603 fixedly arranged on the feed pipe 605, and a side plate 602 fixedly arranged on one side of the baffle plate 6 and slidably connected to the guide rod 603, wherein a first spring 604 is arranged on the guide rod 603; specifically, one end of the first spring 604 is fixed to one side of the feed pipe 605, and the other end is fixed to the side plate 602; it can be explained that the baffle plate 6 moves to drive the side plate 602 to slide on the guide rod 603, so as to stretch or compress the first spring 604, thereby realizing the conversion of elastic force.

[0054] In this embodiment, please refer to Figure 1 as well as Figure 5-Figure 7 The pushing mechanism includes a guide ring 204 fixedly arranged on the reactor 2, the setting height of the guide ring 204 corresponds to the height of the discharge pipe 402, a notch 211 is provided on the side of the guide ring 204 corresponding to the first storage barrel 3 and the second storage barrel 301, and an inclined guide plate 212 is fixedly arranged at the notch 211 along the rotation direction of the pre-reaction barrel 4, wherein sleeves 502 are fixedly arranged on both sides of the turntable 501, and a telescopic rod 505 is slidably inserted and arranged at the other end of the sleeve 502, and the other end of the telescopic rod 505 is fixed to a push plate 507 fixedly arranged on the pre-reaction barrel 4, and a second spring 506 is provided on the telescopic rod 505; specifically, one end of the second spring 506 is fixed to the push plate 507, and the other end is fixed to the sleeve 502; it can be explained that in the initial state, the discharge pipe 402 at the bottom of the pre-reaction barrel 4 slides with the inner edge surface of the guide ring 204 Fitting, based on the setting of the guide ring 204, the telescopic rod 505 is in a contracted state on one side of the sleeve 502, and the second spring 506 contracts synchronously at this time. As the rotating module drives the pre-reaction barrel 4 to rotate to the side of the notch 211, the discharge pipe 402 can be free from the restriction of the guide ring 204. Under the action of elastic force, the second spring 506 drives the pre-reaction barrel 4 to move in a direction away from the axis through the telescopic rod 505 and the push plate 507 until it moves to the coaxial direction of the feed pipe 403 and the delivery pipe 605. After the delivery is completed, as the rotating module continues to drive the pre-reaction barrel 4 to move, the discharge pipe 402 can continue to move to the inside of the guide ring 204 under the restriction of the inclined guide plate 212, and so on. This embodiment can automatically complete the loading in the process of driving the pre-reaction barrel 4 to rotate, without the need to use other servo drive equipment or manual control, and is more efficient.

[0055] For further information, see Figure 1 , Figure 4 as well as Figure 8After the product after the pre-reaction falls into the reactor 2, in order to seal the reactor 2 during the process, in this embodiment, a sealing cover 203 is rotatably arranged on the reactor 2, through grooves 207 are respectively provided on both sides of the sealing cover 203, and a slide groove 210 is provided at the bottom of the through groove 207. A cover plate 208 for sealing the through groove 207 is slidably arranged in the slide groove 210, wherein a through opening 209 is provided on the cover plate 208, and a discharge pipe 402 is fixed on the cover plate 208 and communicated with the through opening 209; it can be explained that when the rotating module drives the pre-reaction barrels 4 on both sides to rotate, the pre-reaction barrels 4 drive the sealing cover 203 to rotate on the reactor 2 through the discharge pipe 402 and the cover plate 208. During the rotation process, even if the pre-reaction barrel 4 moves along the radial direction, the discharge pipe 402 can drive the cover plate 208 to slide in the slide groove 210, but during the sliding process, the cover plate 208 is always in a state of sealing the through groove 207;

[0056] In addition, the cover plate 208 of this embodiment needs to have a certain length so that the through groove 207 can still be sealed when the cover plate 208 moves to the farthest distance.

[0057] Specifically, during the operation of the reactor 2, in order to further increase the reaction rate, in the present embodiment, a stirring motor 206 is fixedly arranged on the sealing cover 203, and the output end of the stirring motor 206 is fixed to a rotating rod 205 arranged in the reactor 2, and a plurality of groups of stirring rods are evenly fixedly arranged on the rotating rod 205; it can be explained that during the reaction, the stirring motor 206 is started to drive the rotating rod 205 to rotate, and when the rotating rod 205 rotates, each stirring rod can be driven to rotate synchronously to stir the pre-reaction product, thereby improving the reaction efficiency and effect.

[0058] See also Figure 4 and Figure 5 , an automatic batching device for a pre-reaction system of a polymerization reaction, comprising a metering cylinder 302 fixedly arranged between a feeding pipe 605 and a storage cylinder, a metering roller 606 rotatably arranged in the metering cylinder 302, the outer wall of the metering roller 606 slidingly fits with the inner wall of the metering cylinder 302, and a metering groove 607 is provided on the metering roller 606, wherein the metering roller 606 is connected to a rotating mechanism driving the metering roller 606 to rotate; it can be explained that in the initial state, the metering groove 607 is located on the side facing the storage cylinder, and the chemical raw materials or catalysts in the storage cylinder can fall into the metering groove 607, when the feeding pipe 403 is coaxial with the feeding pipe 605, the metering roller 606 is driven to rotate by the rotating mechanism, and the material in the metering groove 607 can be discharged into the feeding pipe 403, after the discharge is completed, the rotating mechanism drives the metering roller 606 to reset, and so on;

[0059] In addition, in this embodiment, the volumes of the metering tanks 607 on both sides can be set accordingly based on the ratio of the input chemical raw materials or catalysts, and there is no limitation on this.

[0060] Among them, one side of the metering cylinder 302 is fixed to one side of the top frame 102 through a connecting rod 503.

[0061] See also Figure 2-Figure 5 The rotating mechanism includes gears 303 symmetrically arranged on both sides of the metering cylinder 302, the gears 303 and the metering roller 606 are fixed by a rod body, racks 304 meshing with the gears 303 are slidably arranged on both sides of the metering cylinder 302, and the racks 304 on both sides are fixed to the T-shaped plate 306 through a connecting frame 305, and the setting height of the T-shaped plate 306 corresponds to the height of the push plate 507, wherein a limiting rod 307 is fixedly arranged on the outer side of the metering cylinder 302, and the T-shaped plate 306 is slidably connected to the limiting rod 307, and a third spring 30 is also arranged on the limiting rod 307 8; Specifically, one end of the third spring 308 is fixed to the metering cylinder 302, and the other end is fixed to the T-plate 306; it can be explained that when the pre-reaction cylinder 4 moves in a direction away from the axis, the push plate 507 can push the T-plate 306 to move, and during the movement of the T-plate 306, the racks 304 on both sides are driven to move through the connecting frame 305. The meshing of the racks 304 and the gear 303 can drive the metering roller 606 to rotate synchronously. This embodiment does not need to use other servo drive equipment to adjust the rotation of the metering roller 606, and can achieve the effect of automatic metering of materials.

[0062] In addition, a limit plate 213 is fixedly arranged on the side of the sleeve 502 close to the pre-reaction cylinder 4, wherein a reserved groove 504 for penetrating the limit plate 213 is opened on the push plate 507; it can be explained that when the telescopic rod 505 is retracted toward the sleeve 502, the limit plate 213 can pass through the reserved groove 504 and move to the feed pipe 403 to close the feed pipe 403 and prevent external impurities from entering the feed pipe 403.

[0063] A reaction method of a pre-reaction system for a polymerization reaction comprises the following steps:

[0064] See also Figure 1 , the reaction raw materials are stored in the first storage barrel 3, and the catalyst is stored in the second storage barrel 301;

[0065] See also Figure 2-Figure 5 , the rotating module drives the pre-reaction barrels 4 on both sides to rotate to below the first storage barrel 3 and the second storage barrel 301 respectively, so that the feeding pipes 605 at the bottom of the storage barrels on both sides correspond to the feeding pipes 403 on the pre-reaction barrel 4;

[0066] The regulating module opens the feed pipe 605, so that the reaction raw materials and catalysts in the first storage barrel 3 and the second storage barrel 301 fall into the pre-reaction barrels 4 on both sides through the feed pipe 403 respectively. After the falling is completed, the regulating module regulates the feed pipe 605 to close;

[0067] The rotating module drives the pre-reaction cylinders 4 on both sides to rotate 180 degrees around the axis of the reactor 2 (see Figure 6 ), so that the positions of the pre-reaction cylinders 4 on both sides are interchanged;

[0068] The regulating module opens the feed pipe 605, so that the reaction raw materials and catalysts in the first storage barrel 3 and the second storage barrel 301 fall into the pre-reaction barrels 4 on both sides through the feed pipe 403, respectively. The regulating module adjusts the feed pipe 605 to close, and the rotating module drives the pre-reaction barrels 4 on both sides to rotate 90 degrees around the axis (see Figure 7 );

[0069] After the reaction raw materials and the catalyst react in the pre-reaction cylinder 4 for a period of time, the first solenoid valve 401 is opened to discharge the reaction product into the reaction kettle 2 .

[0070] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0071] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A pre-reaction system for a polymerization reaction, characterized in that: It comprises two groups of pre-reaction cylinders (4) symmetrically arranged on a reaction kettle (2); a feed pipe (403) is arranged at the top of the pre-reaction cylinder (4), a discharge pipe (402) is arranged at the bottom thereof, and a first solenoid valve (401) is arranged between the discharge pipes (402); The reactor (2) is symmetrically provided with a first storage barrel (3) for storing reaction raw materials and a second storage barrel (301) for storing catalysts, and the bottoms of the first storage barrel (3) and the second storage barrel (301) are both provided with a conveying pipe (605) corresponding to the feeding pipe (403); Wherein, an adjustment module is provided at the bottom of the feed pipe (605) for adjusting the opening or closing of the feed pipe (605); The pre-reaction cylinders (4) on both sides are connected to a rotating module that drives them to rotate around the axis of the reaction kettle (2).

2. A pre-reaction system for polymerization reaction according to claim 1, characterized in that: A discharge pipe (201) is provided at the bottom end of the reaction kettle (2), and a second solenoid valve (202) is provided between the discharge pipes (201).

3. A pre-reaction system for polymerization reaction according to claim 1, characterized in that: A base (1) is fixedly arranged on one side of the reaction kettle (2), a mounting frame (101) is fixedly arranged on the base (1), a top frame (102) is fixedly arranged on one end of the mounting frame (101) away from the base (1), a support plate (103) is fixedly arranged on the top frame (102) in a direction toward the axis of the reaction kettle (2), a servo motor (5) is fixedly arranged on the end of the support plate (103), a turntable (501) is fixedly arranged on the output end of the servo motor (5), and pre-reaction cylinders (4) on both sides are arranged on both sides of the turntable (501).

4. A pre-reaction system for polymerization reaction according to claim 1, characterized in that: The regulating module comprises a baffle plate (6) slidably arranged at the bottom of the feed pipe (605), an arc groove (601) is provided on the side close to the baffle plates (6) on both sides, and the arc groove (601) is a semicircular groove for engaging with the pipe mouth of the feed pipe (403), and the baffle plate (6) is connected to the elastic module arranged on the feed pipe (605); The pre-reaction cylinders (4) on both sides are connected to a driving mechanism for driving the pre-reaction cylinders (4) to move in a straight line along the radial direction of the rotating disk (501).

5. A pre-reaction system for polymerization reaction according to claim 4, characterized in that: The elastic module comprises a guide rod (603) fixedly arranged on the material conveying pipe (605), and a side plate (602) slidably connected to the guide rod (603) is fixedly arranged on one side of the material blocking plate (6); Wherein, a first spring (604) is arranged on the guide rod (603).

6. A pre-reaction system for polymerization reaction according to claim 4, characterized in that: The pushing mechanism comprises a guide ring (204) fixedly arranged on the reaction kettle (2), the setting height of the guide ring (204) corresponds to the height of the discharge pipe (402), a notch (211) is provided on one side of the guide ring (204) corresponding to the first storage barrel (3) and the second storage barrel (301), and an inclined guide plate (212) is fixedly arranged at the notch (211) along the rotation direction of the pre-reaction barrel (4); Wherein, sleeves (502) are fixedly arranged on both sides of the rotating disk (501), and a telescopic rod (505) is slidably inserted and arranged on the other end of the sleeve (502), and the other end of the telescopic rod (505) is fixed to a push plate (507) fixedly arranged on the pre-reaction cylinder (4), and a second spring (506) is provided on the telescopic rod (505).

7. A pre-reaction system for polymerization reaction according to claim 1, characterized in that: A sealing cover (203) is rotatably arranged on the reaction kettle (2), through grooves (207) are respectively provided on both sides of the sealing cover (203), a sliding groove (210) is provided at the bottom of the through groove (207), and a cover plate (208) for sealing the through groove (207) is slidably arranged in the sliding groove (210); The cover plate (208) is provided with a through opening (209), and the discharge pipe (402) is fixed on the cover plate (208) and communicated with the through opening (209).

8. A pre-reaction system for polymerization reaction according to claim 7, characterized in that: A stirring motor (206) is fixedly arranged on the sealing cover (203), an output end of the stirring motor (206) is fixed to a rotating rod (205) arranged in the reaction kettle (2), and a plurality of groups of stirring rods are evenly fixedly arranged on the rotating rod (205).

9. An automatic batching device for a pre-reaction system of a polymerization reaction as claimed in any one of claims 1 to 8, characterized in that: It comprises a metering cylinder (302) fixedly arranged between a material conveying pipe (605) and a material storage cylinder, a metering roller (606) rotatably arranged in the metering cylinder (302), an outer wall of the metering roller (606) slidingly fits with an inner wall of the metering cylinder (302), and a metering groove (607) is provided on the metering roller (606); Wherein, the metering roller (606) is connected to a rotating mechanism that drives it to rotate.

10. The automatic batching device of the pre-reaction system of a polymerization reaction according to claim 9, characterized in that: The rotating mechanism comprises gears (303) symmetrically arranged on both sides of the metering cylinder (302), the gears (303) and the metering roller (606) are fixed by a rod body, racks (304) meshing with the gears (303) are slidably arranged on both sides of the metering cylinder (302), the racks (304) on both sides are fixed to the T-shaped plate (306) by a connecting frame (305), and the setting height of the T-shaped plate (306) corresponds to the height of the push plate (507); A limiting rod (307) is fixedly arranged on the outer side of the metering cylinder (302), the T-shaped plate (306) is slidably connected to the limiting rod (307), and a third spring (308) is arranged on the limiting rod (307).

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