EVA particle polymerization reaction kettle capable of being preheated

Abstract

The EVA particle polymerization reaction kettle comprises a reaction kettle tank body of a hollow structure, a control panel is fixedly installed on the outer surface of the front side of the reaction kettle tank body, and a discharging pipe is fixedly installed in the middle of the lower surface of the reaction kettle tank body in a penetrating mode. An electric heater for heating EVA particles is fixedly mounted on the rear side wall in the reaction kettle tank body, a preheating box is arranged right above the reaction kettle tank body, and a communicating structure is formed between the preheating box and the reaction kettle tank body through a communicating pipe fixedly mounted on the lower surface of the preheating box. According to the EVA particle polymerization reaction kettle capable of being preheated, the novel structural design is adopted, the preheating mechanism is arranged, the preheating box is installed above the reaction kettle tank body, EVA particles to be used next time are put into the preheating box to be stored, then when a discharging pipe discharges, heat in the reaction kettle tank body is conveyed into the preheating box through an input pipe, and the EVA particles are preheated. The heat recovery is realized; and the EVA particles are preheated.

Description

Technical Field

[0001] The utility model relates to the technical field of reaction kettles, in particular to an EVA particle polymerization reaction kettle which can be preheated. Background Art

[0002] EVA particles are a type of plastic particles made of ethylene and ethylene vinyl acetate copolymers, with good elasticity, wear resistance and chemical corrosion resistance. EVA particles are widely used in the fields of footwear, packaging, sports equipment, automotive parts, etc., and are a common plastic raw material. When using EVA particles to make corresponding products, such as cables, plastics, etc., the EVA particles need to be polymerized in a polymerization reactor to obtain a molten raw material.

[0003] In the prior art, a Chinese patent with publication number CN216093621U discloses a polymerization reactor, comprising a reactor shell; an air inlet, a feed inlet and a feed outlet are arranged on the shell; a material discharge regulating device is also arranged in the shell, and the material discharge regulating device comprises an air wheel, a transmission rod and a liquid wheel; the air wheel is located at the lower side of the air inlet, and a plurality of air wheel blades are evenly distributed circumferentially on the air wheel; the liquid wheel is located at the lower side of the feed inlet, and a plurality of fixed blades are evenly distributed circumferentially on the liquid wheel, the air wheel and the liquid wheel are fixedly connected by a transmission rod, and the transmission rod is rotatably mounted in the shell; a baffle and a baffle spring are also arranged at the feed inlet, the baffle is slidably mounted on the shell, a baffle spring is arranged between the baffle and the shell, the two ends of the baffle spring are respectively in contact with the shell and the baffle, and the fixed blade can move the baffle to open the baffle; the polymerization reactor ensures a reasonable material ratio, so that the material in the container can fully react, and avoids waste of materials.

[0004] The above-mentioned device needs to heat the inside of the reactor during the polymerization reaction. When the material is discharged after the reaction is completed, the heat inside the reactor is dissipated, and this part of the heat cannot be effectively recycled, resulting in energy waste. Utility Model Content

[0005] The utility model aims to provide a preheatable EVA particle polymerization reactor to solve the problem of the inability to recycle and utilize heat and cause waste in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a preheatable EVA particle polymerization reactor, comprising a reactor tank body with a hollow structure, a control panel fixedly installed on the front outer surface of the reactor tank body, and a discharge pipe fixedly installed through the middle position of the lower surface of the reactor tank body, and further comprising:

[0007] An electric heater for heating EVA particles is fixedly installed on the rear side wall of the reactor tank body, and a preheating box is arranged directly above the reactor tank body, and the preheating box forms a communication structure with the reactor tank body through a connecting pipe fixedly installed on its lower surface, and a preheating mechanism for utilizing waste heat is installed in the preheating box, and the preheating mechanism includes an input pipe and an output pipe connected to the preheating box;

[0008] A transversely arranged filter plate is fixedly installed at the lower end of the interior of the reactor tank body, and a cleaning mechanism is installed on the upper surface of the filter plate.

[0009] Preferably, a through-type communication structure is formed between the lower end of the input pipe and the reactor tank body, and a one-way valve for controlling the gas flow direction is installed outside the input pipe and the output pipe.

[0010] Preferably, the preheating mechanism comprises a double-headed motor fixedly mounted on the upper surface of the reactor tank body and a partition plate fixedly mounted on the right side inside the preheating box, and through holes are evenly spaced at the lower end of the partition plate.

[0011] Preferably, a first laterally arranged stirring rod is rotatably installed in the middle position inside the preheating box, and a driven bevel gear driving the first stirring rod to rotate is coaxially fixedly installed at the rear end of the first stirring rod, and a driving bevel gear driven by a double-headed motor is meshedly connected below the driven bevel gear.

[0012] Preferably, a reciprocating screw is coaxially fixedly installed above the active bevel gear, and a piston plate that fits the inner wall of the preheating box is threadedly installed on the outside of the reciprocating screw.

[0013] Preferably, the cleaning mechanism comprises a cleaning scraper installed on the upper surface of the filter plate in a left-right symmetrical rotation, and the left and right cleaning scrapers rotate synchronously through a transmission chain.

[0014] Preferably, the cleaning scraper on the right side is coaxially fixedly installed with a second stirring rod rotatably installed inside the reactor tank body, and the second stirring rod is driven to rotate by a double-headed motor.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the preheatable EVA particle polymerization reactor adopts a new structural design, the specific contents of which are as follows:

[0016] 1. Set up a preheating mechanism, install a preheating box above the reactor tank, put the EVA particles to be used next time into the preheating box for storage, and then when the discharge pipe is discharged, the heat inside the reactor tank is transported to the preheating box through the input pipe to realize heat recovery and preheat the EVA particles;

[0017] Furthermore, the double-headed motor is used to drive the active bevel gear to rotate, so that the active bevel gear drives the reciprocating screw above to rotate, so that the reciprocating screw drives the piston plate installed with a thread through its outside to move up and down to generate a negative pressure effect, and the hot air inside the reactor tank is sucked into the preheating box;

[0018] Furthermore, the active bevel gear drives the driven bevel gear meshing with it to rotate during the rotation process, so that the driven bevel gear drives the first stirring rod to rotate to stir the particles. At this time, the dust on the surface of the particles can be removed under the action of the airflow to achieve the purpose of cleaning.

[0019] 2. Install a filter plate inside the reactor tank, and use the filter plate to filter the material during the discharge process to remove the agglomerated parts and ensure the quality of the material;

[0020] Furthermore, the second stirring rod drives one of the cleaning scrapers to rotate during the rotation process, and then the two cleaning scrapers rotate synchronously under the transmission action of the transmission chain, so as to achieve the purpose of scraping and cleaning the upper surface of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the reactor tank of the utility model;

[0023] Figure 3 This is a schematic diagram of the transmission chain structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the preheating box of the utility model;

[0025] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0026] Figure 6 It is a schematic diagram of the meshing relationship between the active bevel gear and the driven bevel gear of the utility model.

[0027] In the figure: 1. Reactor tank; 2. Control panel; 3. Discharge pipe; 4. Preheating box; 5. Connecting pipe; 6. Electric heater; 7. Input pipe; 8. Output pipe; 9. Double-head motor; 10. Partition plate; 11. Through hole; 12. First stirring rod; 13. Driven bevel gear; 14. Driving bevel gear; 15. Reciprocating screw; 16. Piston plate; 17. Filter plate; 18. Cleaning scraper; 19. Transmission chain; 20. Second stirring rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1

[0030] See also Figure 1 , Figure 3-Figure 6 In order to solve the problem of waste caused by internal heat loss during discharge of materials in traditional reactors, the present embodiment provides the following technical solutions, wherein a preheating mechanism is provided to draw heat from the reactor tank body 1 into a preheating box 4 to preheat the EVA particles to be used. Specifically disclosed is: a reactor tank body 1 having a hollow structure, a control panel 2 is fixedly installed on the front outer surface of the reactor tank body 1, and a discharge pipe 3 is fixedly installed through the middle position of the lower surface of the reactor tank body 1, an electric heater 6 for heating the EVA particles is fixedly installed on the rear side wall of the reactor tank body 1, and a preheating box 4 is provided directly above the reactor tank body 1, and the preheating box 4 is connected to the reactor tank body through a connecting pipe 5 fixedly installed on its lower surface. 1 forms a connecting structure, a preheating mechanism for utilizing waste heat is installed in the preheating box 4, and the preheating mechanism includes an input pipe 7 and an output pipe 8 connected to the preheating box 4; a through-type connecting structure is formed between the lower end of the input pipe 7 and the reactor tank body 1, and a one-way valve for controlling the flow direction of gas is installed on the outside of the input pipe 7 and the output pipe 8, the preheating mechanism includes a double-headed motor 9 fixedly installed on the upper surface of the reactor tank body 1 and a partition plate 10 fixedly installed on the right side of the preheating box 4, and through holes 11 are opened at equal intervals at the lower end of the partition plate 10, a reciprocating screw 15 is coaxially fixedly installed above the active bevel gear 14, and a piston plate 16 that fits the inner wall of the preheating box 4 is installed through a thread on the outside of the reciprocating screw 15.

[0031] When using the device, firstly, EVA particles are placed into the reactor tank body 1 through the preheating box 4 and the connecting pipe 5, and then the EVA particles to be used next time are placed into the preheating box 4, and then the electric heater 6 inside the reactor tank body 1 is turned on for heating, and at the same time, the double-headed motor 9 drives the second stirring rod 20 to rotate, and the EVA particles inside the reactor tank body 1 undergo a polymerization reaction. After the reaction is completed, the material can be discharged through the discharge pipe 3, and the valves of the input pipe 7 and the output pipe 8 are opened while the material is discharged. At this time, the double-headed motor 9 continues to be turned on, driving the active bevel gear 14 above it to rotate, so that the active bevel gear 14 drives the reciprocating screw 15 to rotate synchronously, and at this time, the piston plate 16 threadedly installed on the outside of the reciprocating screw 15 moves up and down, and under the action of the through hole 11, a negative pressure is formed inside the preheating box 4, thereby drawing the hot air inside the reactor tank body 1 into the preheating box 4 through the input pipe 7, so as to achieve the preheating effect on the EVA particles.

[0032] Embodiment 2

[0033] See also Figure 3-Figure 6 In order to solve the problem that dust adheres to the surface of EVA particles and affects the quality of subsequent materials, this embodiment provides the following technical solution, which removes the dust on the surface of the EVA particles through airflow. Specifically, it discloses that a first stirring rod 12 arranged laterally is rotatably installed in the middle position inside the preheating box 4, and a driven bevel gear 13 driving the first stirring rod 12 to rotate is coaxially fixedly installed at the rear end of the first stirring rod 12, and an active bevel gear 14 driven by a double-headed motor 9 is meshedly connected below the driven bevel gear 13.

[0034] The active bevel gear 14 drives the driven bevel gear 13 meshing with it to rotate synchronously during the rotation process, so that the driven bevel gear 13 drives the first stirring rod 12 to rotate, and the EVA particles inside the preheating box 4 are stirred, so that the dust is separated from the surface of the EVA particles, and at the same time, the airflow takes away the dust on the surface of the EVA particles when it is discharged from the output pipe 8.

[0035] Embodiment 3

[0036] See also Figure 2 and Figure 3In order to solve the problem that the filter plate 17 becomes clogged after long-term use, the present embodiment provides the following technical solution, in which a cleaning mechanism is arranged, and the purpose of scraping and cleaning is achieved by rotating a cleaning scraper 18 on the upper surface of the filter plate 17. Specifically, it is disclosed that: a laterally arranged filter plate 17 is fixedly installed at the lower end of the interior of the reactor tank body 1, and a cleaning mechanism is installed on the upper surface of the filter plate 17. The cleaning mechanism includes a cleaning scraper 18 symmetrically installed on the upper surface of the filter plate 17, and the left and right cleaning scrapers 18 rotate synchronously through a transmission chain 19. The right cleaning scraper 18 is coaxially fixedly installed with a second stirring rod 20 rotatably installed inside the reactor tank body 1, and the second stirring rod 20 is driven to rotate by a double-headed motor 9.

[0037] When discharging the material, it is first filtered using the filter plate 17 to remove the lumps therein. At the same time, the second stirring rod 20 drives one of the cleaning scrapers 18 to rotate during the rotation process, so that the two cleaning scrapers 18 rotate synchronously under the transmission action of the transmission chain 19, thereby achieving the purpose of scraping and cleaning the surface of the filter plate 17.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preheatable EVA particle polymerization reactor, comprising a reactor tank body (1) with a hollow structure, a control panel (2) fixedly installed on the front outer surface of the reactor tank body (1), and a discharge pipe (3) fixedly installed through the middle position of the lower surface of the reactor tank body (1), characterized in that: Also includes: An electric heater (6) for heating the EVA particles is fixedly installed on the rear side wall of the reactor tank body (1), and a preheating box (4) is arranged directly above the reactor tank body (1). The preheating box (4) forms a communication structure with the reactor tank body (1) through a connecting pipe (5) fixedly installed on its lower surface. A preheating mechanism for utilizing waste heat is installed in the preheating box (4), and the preheating mechanism includes an input pipe (7) and an output pipe (8) connected to the preheating box (4); A transversely arranged filter plate (17) is fixedly mounted at the lower end of the interior of the reactor tank body (1), and a cleaning mechanism is mounted on the upper surface of the filter plate (17).

2. The preheatable EVA particle polymerization reactor according to claim 1, characterized in that: A through-type communication structure is formed between the lower end of the input pipe (7) and the reactor tank body (1), and one-way valves for controlling the flow direction of gas are installed outside the input pipe (7) and the output pipe (8).

3. The preheatable EVA particle polymerization reactor according to claim 1, characterized in that: The preheating mechanism comprises a double-headed motor (9) fixedly mounted on the upper surface of the reactor tank body (1) and a partition plate (10) fixedly mounted on the right side inside the preheating box (4), and through holes (11) are formed at equal intervals at the lower end of the partition plate (10).

4. The preheatable EVA particle polymerization reactor according to claim 3, characterized in that: A first stirring rod (12) arranged transversely is rotatably mounted in the middle of the preheating box (4), and a driven bevel gear (13) is coaxially fixedly mounted at the rear end of the first stirring rod (12) to drive the first stirring rod (12) to rotate, and a driving bevel gear (14) driven by a double-headed motor (9) is meshingly connected below the driven bevel gear (13).

5. The preheatable EVA particle polymerization reactor according to claim 4, characterized in that: A reciprocating screw (15) is coaxially fixedly mounted above the active bevel gear (14), and a piston plate (16) is threadedly mounted on the outside of the reciprocating screw (15) and is in contact with the inner wall of the preheating box (4).

6. The preheatable EVA particle polymerization reactor according to claim 1, characterized in that: The cleaning mechanism comprises a cleaning scraper (18) which is symmetrically mounted on the upper surface of the filter plate (17) for rotation, and the left and right cleaning scrapers (18) rotate synchronously via a transmission chain (19).

7. The preheatable EVA particle polymerization reactor according to claim 6, characterized in that: The cleaning scraper (18) on the right is coaxially fixedly installed with a second stirring rod (20) rotatably installed inside the reactor tank body (1), and the second stirring rod (20) is driven to rotate by a double-headed motor (9).

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