Controllable polymerization equipment for polyethylene production

Abstract

The utility model relates to the technical field of controllable polyethylene production, and discloses polymerization equipment for controllable polyethylene production, which comprises a polymerization box, a support frame is fixed at the bottom of the polymerization box, a feed pipe is arranged at the top of the polymerization box, the bottom end of the feed pipe extends into the polymerization box, a plurality of extension pipes are arranged in the polymerization box, and the extension pipes are connected with the support frame. One ends of all the extension pipes are jointly communicated with a telescopic pipe, the telescopic pipe is communicated with the bottom end of the feeding pipe, a plurality of through holes are formed in the bottom of the telescopic pipe in a penetrating mode, and a moving assembly used for driving the feeding pipe to move is arranged in the polymerization box. According to the controllable polymerization equipment for polyethylene production, disclosed by the utility model, different types of raw materials can be uniformly dispersed in the feeding stage, so that the performance consistency of a final product is further improved, and the treatment efficiency of heating and stirring the raw materials in the later stage is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of controllable polyethylene production, in particular to polymerization equipment for controllable polyethylene production. Background Art

[0002] Polyethylene is a thermoplastic produced by the polymerization reaction of ethylene monomers. It is one of the most produced and widely used plastics in the world. Polyethylene has excellent chemical stability, electrical insulation properties and processing properties, and is widely used in the manufacture of various plastic products such as plastic bags, films, pipes, containers, toys, etc.

[0003] During the processing of polyethylene, existing polymerization equipment suffers from uneven mixing of raw materials. When polyethylene particles and additives such as stabilizers and antistatic agents are poured directly into the equipment, these raw materials will initially aggregate in one place and rely entirely on subsequent stirring to disperse them. However, under high temperature conditions, polyethylene is in a molten state and its viscosity increases, making stirring more difficult and preventing the additives from being evenly dispersed. This not only leads to inconsistent performance in the final product, affecting electrical insulation, mechanical strength, and antistatic properties, but also increases processing difficulty and scrap rate, reduces production efficiency and product quality, and increases equipment wear.

[0004] Therefore, it is necessary to design a controllable polyethylene production polymerization equipment to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a controllable polymerization device for polyethylene production.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A polymerization device for controllable polyethylene production includes a polymerization box, a support frame is fixed to the bottom of the polymerization box, a feed pipe is provided on the top of the polymerization box, and the bottom end of the feed pipe extends into the interior of the polymerization box, a plurality of extension pipes are provided in the polymerization box, and one end of all the extension pipes is connected to a telescopic pipe, the telescopic pipe is connected to the bottom end of the feed pipe, and a plurality of through holes are penetrated in the bottom of the telescopic pipe. A moving component for driving the feed pipe to move is provided inside the polymerization box.

[0008] As an optimal technical solution of the present invention, the moving component includes a motor 1 fixedly connected to the inner bottom surface of the support frame, the end of the output shaft of the motor 1 is connected to a reciprocating screw, the reciprocating screw is threadedly sleeved with a driving cylinder, the top of the driving cylinder extends to the interior of the polymerization box, the cross-section of the outer side of the driving cylinder is a rectangular structure, and the driving cylinder is slidingly connected to the polymerization box, the feed pipe is sleeved with a sleeve, the free end of the extension tube passes through the inner side of the sleeve, and the extension tube is slidingly connected to the sleeve, the top of the sleeve extends to the top of the polymerization box, and the top of the driving cylinder is rotatably connected to the bottom of the sleeve.

[0009] As a preferred technical solution of the present invention, the moving component also includes a rotating part, which includes a mounting bracket fixedly connected to the top of the aggregation box, and a second motor is fixed to the top of the mounting bracket. The end of the output shaft of the second motor extends to the inside of the mounting bracket, and the end of the output shaft of the second motor is connected to a second gear. A first gear is rotated on the top of the aggregation box, and the first gear is slidably mounted on the sleeve. The first gear and the second gear are engaged with each other, and the cross-section of the outer side of the sleeve is a rectangular structure.

[0010] As an optimal technical solution of the present invention, a swinging assembly is provided on the extension tube, and the swinging assembly includes several fixed plates fixedly connected to the side wall of the extension tube, a spring is provided between the fixed plate and the inner side of the sleeve, and several protrusions are fixed on the inner side of the polymerization box.

[0011] As a preferred technical solution of the present invention, the inner bottom surface of the extension tube is inclined.

[0012] As a preferred technical solution of the present invention, the top end of the feed pipe is a funnel-shaped structure.

[0013] The utility model has the following beneficial effects:

[0014] 1. Uniform dispersion of raw materials: By setting up extension tubes and telescopic tubes, the raw materials are dispersed to multiple points before entering the polymerization box, avoiding the raw materials from gathering in one place in the initial stage. The combination of the moving assembly and the rotating part enables the extension tube to move upward while rotating, further enhancing the dispersion effect of the raw materials, ensuring that the additives can be evenly distributed in the polyethylene particles, thereby improving the uniformity of the raw materials and ensuring the consistency of the product;

[0015] 2. Improve processing quality: Uniform dispersion of raw materials ensures the performance consistency of the final product, avoids fluctuations in electrical insulation, mechanical strength, antistatic properties and other properties caused by uneven distribution of additives, and reduces the scrap rate caused by uneven mixing, thereby improving production efficiency and product quality;

[0016] 3. Improve the processing process: Uniform feeding can improve the efficiency of the subsequent heating and stirring, reduce the fluidity problem of the melt in the later stage, reduce the blockage and jamming phenomenon in the processing process, and reduce the load of the equipment during operation, reduce the wear and damage of the equipment, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a controllable polymerization device for polyethylene production proposed in the present invention;

[0018] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0019] Figure 3 Schematic diagram of the structure of the extension tube;

[0020] Figure 4 It is a three-dimensional cross-sectional view of the drive cylinder and reciprocating screw.

[0021] In the figure: 1 polymerization box, 2 support frame, 3 feed pipe, 4 extension pipe, 5 telescopic pipe, 6 through hole, 7 sleeve, 8 drive cylinder, 9 reciprocating screw, 10 motor 1, 11 gear 1, 12 gear 2, 13 mounting frame, 14 motor 2, 15 bump, 16 fixing plate, 17 spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1

[0024] Reference Figure 1-4 , a polymerization device for controllable polyethylene production, including a polymerization box 1, a support frame 2 is fixed to the bottom of the polymerization box 1, a feed pipe 3 is provided on the top of the polymerization box 1, and the bottom end of the feed pipe 3 extends into the interior of the polymerization box 1, the feed pipe 3 is coaxially arranged with the polymerization box 1, the top end of the feed pipe 3 is a funnel-shaped structure, which increases the range of the staff to dump the raw materials, and a plurality of extension pipes 4 are provided in the polymerization box 1, all of which are arranged at equal intervals in the circumferential direction, and one end of all the extension pipes 4 is connected to a telescopic pipe 5, which is connected to the bottom end of the feed pipe 3, and a plurality of through holes 6 are penetrated at the bottom of the telescopic pipe 5. The inner bottom surface of the extension pipe 4 is inclined, which allows the raw materials to slide from one end of the extension pipe 4 to the other end, so that the raw materials are dispersed;

[0025] The interior of the polymerization box 1 is provided with a moving component for driving the feed pipe 3 to move. The moving component includes a motor 10 fixedly connected to the inner bottom surface of the support frame 2. The end of the output shaft of the motor 10 is connected to a reciprocating screw 9. A driving cylinder 8 is threadedly sleeved on the reciprocating screw 9. The top of the driving cylinder 8 extends to the interior of the polymerization box 1. The cross-section of the outer side of the driving cylinder 8 is a rectangular structure. The polymerization box 1 limits the driving cylinder 8, so that the rotation of the reciprocating screw 9 will not drive the driving cylinder 8 to rotate, but drives the driving cylinder 8 to move in the vertical direction, and the driving cylinder 8 is slidingly connected to the polymerization box 1. A sleeve 7 is sleeved on the feed pipe 3, and the feed pipe 3 is fixed to the inner side of the sleeve 7 by equipment such as a pipe clamp. The free end of the extension tube 4 passes through the inner side of the sleeve 7, and the extension tube 4 is slidingly connected to the sleeve 7. The top of the sleeve 7 extends to the top of the polymerization box 1, and the top of the driving cylinder 8 is rotatably connected to the bottom of the sleeve 7.

[0026] Working principle: When the staff adds other additives and other raw materials into the polyethylene granules, they pour different types of raw materials in batches. Specifically, the staff starts the motor 10, and the output shaft of the motor 10 rotates to drive the reciprocating screw 9 to rotate. Under the limiting action of the polymerization box 1, the driving cylinder 8 moves upward, and then pushes up the sleeve 7, so that the extension tube 4 and the feed tube 3 can move upward. During the upward movement, the staff pours the raw materials into the feed tube 3, and then the raw materials enter the extension tube 4 through the telescopic tube 5 and are dispersed in the polyethylene granules through the through hole 6. This design allows the raw materials to be dispersed, maintaining the uniformity and quality of processing, and also helps the subsequent heating and stirring process.

[0027] Example 2

[0028] Example 2 includes the contents of Example 1, and the technical features disclosed in Example 1 are also applicable to this example. The technical features disclosed in Example 1 will not be repeated here. The following is a further detailed description of the implementation method of the polymerization equipment for controllable polyethylene production in conjunction with the accompanying drawings.

[0029] The moving assembly also includes a rotating part, which includes a mounting bracket 13 fixedly connected to the top of the polymerization box 1. A motor 2 14 is fixed to the top of the mounting bracket 13. The end of the output shaft of the motor 2 14 extends to the inside of the mounting bracket 13, and the end of the output shaft of the motor 2 14 is connected to a gear 2 12. A gear 11 is rotated on the top of the polymerization box 1, and the gear 1 11 is slidably mounted on the sleeve 7. The gear 11 and the sleeve 7 are coaxially arranged. The gear 11 and the gear 2 12 are engaged with each other. The cross-section of the outer side of the sleeve 7 is a rectangular structure, and the gear 11 guides the sleeve 7.

[0030] Working principle: When motor 10 is started, motor 2 14 is started at the same time. The output shaft of motor 2 14 rotates to drive gear 2 12 to rotate, and then drives gear 11 to rotate. Since gear 11 plays a guiding and limiting role on sleeve 7, the rotation of gear 11 can drive the rotation of sleeve 7, and then drive the extension tube 4 to rotate. In this way, combined with embodiment 1, the extension tube 4 can move upward while rotating, which allows the raw materials to be dispersed in the feeding link, thereby improving the quality of product processing.

[0031] Example 3

[0032] Example 3 includes the contents of Example 1 and Example 2. The technical features disclosed in Example 1 and Example 2 are also applicable to this example. The technical features disclosed in Example 1 and Example 2 will not be repeated here. The implementation method of the polymerization equipment for controllable polyethylene production will be further described in detail below in conjunction with the accompanying drawings.

[0033] Reference Figure 1 and Figure 2 A swing assembly is provided on the extension tube 4, and the swing assembly includes several fixed plates 16 fixedly connected to the side wall of the extension tube 4. A spring 17 is provided between the fixed plate 16 and the inner side of the sleeve 7. Several protrusions 15 are fixed on the inner side of the polymerization box 1. The protrusions 15 are hemispherical in structure, which can reduce the friction between the extension tube 4 and the protrusions 15. Secondly, the telescopic tube 5 can be deformed so that the extension tube 4 can always be connected with the feed tube 3 during the movement.

[0034] Working principle: When the sleeve 7 rotates under the action of motor 2 14, the extension tube 4 will be squeezed with the protrusion 15 on the inner side of the polymerization box 1, and then the extension tube 4 will move toward the inside of the sleeve 7. When the extension tube 4 is not in contact with the protrusion 15, under the elastic force of the spring 17, the extension tube 4 will move in the opposite direction and reset. In this way, under the action of several protrusions 15, the extension tube 4 will swing back and forth horizontally, which increases the moving range of the through hole 6 and further improves the uniformity of the raw material distribution.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A polymerization device for controllable polyethylene production, comprising a polymerization box (1), characterized in that: A support frame (2) is fixed to the bottom of the polymerization box (1), a feed pipe (3) is provided on the top of the polymerization box (1), and the bottom end of the feed pipe (3) extends to the inside of the polymerization box (1), and a plurality of extension pipes (4) are provided in the polymerization box (1), and one end of all the extension pipes (4) is connected to a telescopic pipe (5), and the telescopic pipe (5) is connected to the bottom end of the feed pipe (3), and a plurality of through holes (6) are provided through the bottom of the telescopic pipe (5), and a moving component for driving the feed pipe (3) to move is provided inside the polymerization box (1).

2. A controllable polyethylene production polymerization device according to claim 1, characterized in that: The moving assembly includes a motor (10) fixedly connected to the inner bottom surface of the support frame (2), the output shaft end of the motor (10) is connected to a reciprocating screw (9), a driving cylinder (8) is threadedly sleeved on the reciprocating screw (9), the top end of the driving cylinder (8) extends to the inside of the polymerization box (1), the cross-section of the outer side of the driving cylinder (8) is a rectangular structure, and the driving cylinder (8) is slidably connected to the polymerization box (1), the feeding pipe (3) is sleeved with a sleeve (7), the free end of the extension tube (4) passes through the inner side of the sleeve (7), and the extension tube (4) is slidably connected to the sleeve (7), the top end of the sleeve (7) extends to the top of the polymerization box (1), and the top end of the driving cylinder (8) is rotatably connected to the bottom of the sleeve (7).

3. A controllable polyethylene production polymerization device according to claim 2, characterized in that: The moving assembly also includes a rotating part, which includes a mounting frame (13) fixedly connected to the top of the polymerization box (1), a second motor (14) is fixed on the top of the mounting frame (13), the output shaft end of the second motor (14) extends to the inside of the mounting frame (13), and the output shaft end of the second motor (14) is connected to the second gear (12), the top of the polymerization box (1) is rotated with a first gear (11), and the first gear (11) is slidably mounted on the sleeve (7), the first gear (11) and the second gear (12) are meshed with each other, and the cross-section of the outer side of the sleeve (7) is a rectangular structure.

4. A controllable polyethylene production polymerization device according to claim 2, characterized in that: The extension tube (4) is provided with a swing assembly, which includes a plurality of fixed plates (16) fixedly connected to the side wall of the extension tube (4), a spring (17) is provided between the fixed plates (16) and the inner side of the sleeve (7), and a plurality of protrusions (15) are fixed on the inner side of the polymerization box (1).

5. A controllable polyethylene production polymerization device according to claim 1, characterized in that: The inner bottom surface of the extension tube (4) is arranged in an inclined manner.

6. A controllable polyethylene production polymerization device according to claim 1, characterized in that: The top end of the feeding pipe (3) is a funnel-shaped structure.

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