Storage device for polyethylene production

Abstract

The utility model discloses a material storage device for polyethylene production, which comprises a tank body assembly, the tank body assembly comprises a storage bin, the top of the outer side of the storage bin is communicated with a filtering bin, a filtering assembly is arranged in the filtering bin, a stirring assembly is arranged in the storage bin, and the stirring assembly is communicated with the filtering bin. The filter assembly comprises a first motor fixedly connected to the outer side of the filter bin in a bolted mode, and an output shaft of the first motor is in key connection with a first rotating rod. Through arrangement of the filter assembly, the first motor is started to drive the first rotating rod to rotate, the first rotating rod rotates to drive the rotating disc to rotate at the same time, and the rotating disc rotates to drive the eccentric rod to rotate; the eccentric rod rotates to drive the sieve plate to vibrate up, down, left and right, the sieve plate screens polyethylene powder to the bottom of the filter bin, polyethylene particles are discharged into the storage bin along one end of the sieve plate, and therefore the effect of conducting vibration screening on the polyethylene particles entering the filter bin is achieved, and the use efficiency of the storage device is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene production technology, and specifically to a storage device for polyethylene production. Background Technology

[0002] Polyethylene (PE) is a thermoplastic resin produced by the polymerization of ethylene monomers. It is widely used in packaging (such as plastic bags, plastic films, geomembranes, bottles, etc.), insulation and sheathing of wires and cables, hot water and heating pipes, oil and gas pipelines, automotive interior parts, and greenhouse covering materials. After production, PE is typically in the form of milky-white, waxy granules. PE is a thermoplastic, odorless, tasteless, non-toxic, and flammable. During the molding process, PE resin is extruded and granulated to form milky-white, waxy granules, which are generally stored in sealed containers or bags.

[0003] Existing sealed tanks cannot filter polyethylene when storing it. This is because during the process of polyethylene being transported to the storage tank through pipelines after production, polyethylene particles will generate a certain amount of powder through cutting, extrusion, friction, and collision. This polyethylene powder will directly affect the performance of polyethylene particles in subsequent production, such as reducing the hardness, toughness, wear resistance, and chemical stability of the finished product. Utility Model Content

[0004] The purpose of this invention is to provide a storage device for polyethylene production. Through the arrangement of the filter assembly, and utilizing the connection between the first motor, the first rotating rod, the turntable, the eccentric rod, and the screen plate, starting the first motor drives the first rotating rod to rotate. Simultaneously, the rotation of the first rotating rod drives the turntable to rotate, which in turn drives the eccentric rod to rotate. The rotation of the eccentric rod causes the screen plate to vibrate up, down, left, and right. The screen plate sieves the polyethylene powder to the bottom of the filter chamber, while the polyethylene granules are discharged into the storage chamber along one end of the screen plate. This achieves the effect of vibrating and screening the polyethylene granules entering the filter chamber, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a storage device for polyethylene production, comprising a tank assembly, the tank assembly including a storage chamber, a filter chamber connected to the top of the outer side of the storage chamber, a filter assembly installed inside the filter chamber, and a stirring assembly installed inside the storage chamber. The filter assembly includes a first motor fixedly bolted to the outside of the filter chamber, the output shaft of the first motor being keyed to a first rotating rod, one end of the first rotating rod rotatably penetrating into the interior of the filter chamber, and a turntable fixedly mounted on one end of the first rotating rod, an eccentric rod fixedly mounted on one end of the turntable, and a sieve plate rotatably fitted onto the outer arc surface of the eccentric rod.

[0006] Preferably, the side wall of the storage chamber is provided with a through-hole, through-hole, through which the discharge end of the screen plate extends into the interior of the storage chamber.

[0007] Preferably, the surface of the sieve plate is provided with a number of filter holes, and a set of baffles is fixedly installed on both sides of the top of the sieve plate.

[0008] Preferably, two sets of springs are symmetrically fixedly installed on the outer sides of both sets of baffles, and one end of each of the four sets of springs is welded to the inner wall of the filter chamber.

[0009] Preferably, the stirring assembly includes a second motor fixedly bolted to the top of the storage chamber, the output shaft of the second motor being keyed to a second rotating rod, one end of the second rotating rod penetrating to the bottom of the inner cavity of the storage chamber, and several sets of stirring rods being fixedly installed on the outer arc surface of the second rotating rod.

[0010] Preferably, one end of several sets of stirring rods is equipped with two sets of scrapers, and the outer sides of both sets of scrapers are in contact with the inner wall of the storage chamber.

[0011] Preferably, the top of the filter chamber is connected to a feed pipe, the bottom right side of the filter chamber is connected to a return pipe, and the bottom of the storage chamber is connected to a discharge pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, through the setting of the filter assembly, starts the first motor to drive the first rotating rod to rotate. The rotation of the first rotating rod drives the turntable to rotate, and the rotation of the turntable drives the eccentric rod to rotate. The rotation of the eccentric rod causes the screen plate to vibrate up, down, left and right. The screen plate screens the polyethylene powder to the bottom of the filter chamber, while the polyethylene granules are discharged into the interior of the storage chamber along one end of the screen plate. This achieves the effect of vibrating and screening the polyethylene granules entering the filter chamber, thereby improving the utilization efficiency of the storage device.

[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first motor mounting structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the filter assembly of this utility model;

[0018] Figure 4 This is an exploded view of the filter assembly of this utility model;

[0019] Figure 5 This is an exploded structural diagram of the stirring assembly of this utility model.

[0020] In the diagram: 1. Tank assembly; 11. Storage chamber; 12. Filter chamber; 13. Connecting channel; 14. Feed pipe; 15. Return pipe; 16. Discharge pipe; 2. Filter assembly; 21. First motor; 22. First rotating rod; 23. Turntable; 24. Eccentric rod; 25. Screen plate; 26. Filter hole; 27. Baffle; 28. Spring; 3. Stirring assembly; 31. Second motor; 32. Second rotating rod; 33. Stirring rod; 34. Scraper. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a storage device for polyethylene production, including a tank assembly 1, which includes a storage chamber 11. The top of the storage chamber 11 is connected to a filter chamber 12. A filter assembly 2 is installed inside the filter chamber 12, and a stirring assembly 3 is installed inside the storage chamber 11. The filter assembly 2 includes a first motor 21 fixedly bolted to the outside of the filter chamber 12. The output shaft of the first motor 21 is keyed to a first rotating rod 22. One end of the first rotating rod 22 rotatably penetrates into the interior of the filter chamber 12, and a turntable 23 is fixedly installed at one end of the first rotating rod 22. An eccentric rod 24 is fixedly installed at one end of the turntable 23. A sieve plate 25 is rotatably fitted on the outer arc surface of the eccentric rod 24.

[0023] In use, through the setup of the filter assembly 2, and utilizing the connection relationship between the first motor 21, the first rotating rod 22, the turntable 23, the eccentric rod 24, and the sieve plate 25, the first motor 21 (model YX3 series) is started to drive the first rotating rod 22 to rotate. The rotation of the first rotating rod 22 simultaneously drives the turntable 23 to rotate, which in turn drives the eccentric rod 24 to rotate. The rotation of the eccentric rod 24 causes the sieve plate 25 to vibrate up, down, left, and right. The sieve plate 25 sieves the polyethylene powder to the bottom of the filter chamber 12, while the polyethylene granules are discharged into the storage chamber 11 along one end of the sieve plate 25. This achieves the effect of vibrating and screening the polyethylene granules entering the filter chamber 12. Combined with the setup of the stirring assembly 3, it effectively prevents the polyethylene granules from clumping and accumulating inside the storage chamber 11.

[0024] The side wall of the storage bin 11 is provided with a through-hole connecting groove 13. The discharge end of the screen plate 25 is movably connected to the interior of the storage bin 11 through the connecting groove 13. Through the connection relationship between the storage bin 11, the connecting groove 13 and the screen plate 25, the polyethylene granules after being screened by the screen plate 25 are discharged into the interior of the storage bin 11 through the connecting groove 13.

[0025] The surface of the sieve plate 25 is provided with several sets of filter holes 26, and a set of baffles 27 are fixedly installed on both sides of the top of the sieve plate 25. Through the setting of several sets of filter holes 26, the powder in the polyethylene granules falls into the bottom of the inner cavity of the filter chamber 12 through the filter holes 26, thereby achieving the effect of screening polyethylene. At the same time, by utilizing the connection between the sieve plate 25 and the two sets of baffles 27, the problem of polyethylene granules falling around during screening is solved, ensuring that the polyethylene granules pass through the top of the sieve plate 25 stably.

[0026] Two sets of springs 28 are symmetrically fixed on the outer sides of the two sets of baffles 27. One end of each set of springs 28 is welded to the inner wall of the filter chamber 12. By utilizing the connection between the baffles 27 and the springs 28, the springs 28 can limit the screen plate 25 to prevent the screen plate 25 from rotating with the eccentric rod 24. At the same time, the screen plate 25 can sway up, down and left and right with the rotation of the eccentric rod 24, thereby achieving the effect of vibrating screening.

[0027] The stirring assembly 3 includes a second motor 31 fixedly bolted to the top of the storage chamber 11. The output shaft of the second motor 31 is keyed to a second rotating rod 32. One end of the second rotating rod 32 extends through to the bottom of the inner cavity of the storage chamber 11, and several sets of stirring rods 33 are fixedly installed on the outer arc surface of the second rotating rod 32. The model of the second motor 31 is GJ315A1-8. The second motor 31 is started at regular intervals to drive the second rotating rod 32 to rotate. While the second rotating rod 32 rotates, it drives the stirring rods 33 to rotate inside the storage chamber 11, thereby achieving the effect of stirring the polyethylene granules inside the storage chamber 11 and avoiding the agglomeration and accumulation of polyethylene granules caused by long-term static storage.

[0028] Two sets of scrapers 34 are installed at one end of several sets of stirring rods 33. The outer sides of the two sets of scrapers 34 are in contact with the inner wall of the storage chamber 11. Through the connection between the stirring rods 33, scrapers 34 and storage chamber 11, when the stirring rods 33 rotate, they drive the scrapers 34 to scrape the inner wall of the storage chamber 11, so as to avoid the polyethylene particles from sticking to the inner wall of the storage chamber 11.

[0029] The top of the filter chamber 12 is connected to the feed pipe 14, the bottom right side of the filter chamber 12 is connected to the return pipe 15, and the bottom of the storage chamber 11 is connected to the discharge pipe 16. The feed pipe 14 allows polyethylene to be discharged into the filter chamber 12. The return pipe 15 allows the screened polyethylene powder to be discharged back into the raw material silo, avoiding waste of raw materials. The discharge pipe 16 facilitates the use of polyethylene granules.

[0030] In practical use: The produced polyethylene is discharged into the filter chamber 12 through the feed pipe 14. The polyethylene granules will fall onto the surface of the screen plate 25. The first motor 21 is started to drive the screen plate 25 to vibrate. The polyethylene granules enter the storage chamber 11 through the discharge end of the screen plate 25, while the polyethylene powder falls to the bottom of the inner cavity of the filter chamber 12 through the filter hole 26. Then the polyethylene powder is transported to the raw material silo through the return pipe 15 and re-enters the pellet mill. The granules entering the storage chamber 11 are agitated by the stirring component 3 at regular intervals to effectively prevent the polyethylene granules from clumping and accumulating. The discharge pipe 16 set at the bottom of the storage chamber 11 achieves the effect of rapid material removal.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A storage device for polyethylene production, characterized in that: The tank assembly (1) includes a storage chamber (11), the top of which is connected to a filter chamber (12), a filter assembly (2) is installed inside the filter chamber (12), and a stirring assembly (3) is installed inside the storage chamber (11). The filter assembly (2) includes a first motor (21) fixedly bolted to the outside of the filter chamber (12). The output shaft of the first motor (21) is keyed to a first rotating rod (22). One end of the first rotating rod (22) rotatably penetrates into the interior of the filter chamber (12), and a turntable (23) is fixedly installed at one end of the first rotating rod (22). An eccentric rod (24) is fixedly installed at one end of the turntable (23), and a sieve plate (25) is rotatably fitted on the outer arc surface of the eccentric rod (24).

2. The storage device for polyethylene production according to claim 1, characterized in that: The storage bin (11) has a through-hole connecting groove (13) on its side wall, and the discharge end of the screen plate (25) is movably connected to the interior of the storage bin (11) through the connecting groove (13).

3. A storage device for polyethylene production according to claim 1, characterized in that: The surface of the sieve plate (25) is provided with a number of filter holes (26), and a set of baffles (27) are fixedly installed on both sides of the top of the sieve plate (25).

4. A storage device for polyethylene production according to claim 3, characterized in that: Two sets of springs (28) are symmetrically fixed on the outer side of each of the two sets of baffles (27), and one end of each of the four sets of springs (28) is welded to the inner wall of the filter chamber (12).

5. A storage device for polyethylene production according to claim 1, characterized in that: The stirring assembly (3) includes a second motor (31) fixedly bolted to the top of the storage chamber (11). The output shaft of the second motor (31) is keyed to a second rotating rod (32). One end of the second rotating rod (32) extends through to the bottom of the inner cavity of the storage chamber (11), and several sets of stirring rods (33) are fixedly installed on the outer arc surface of the second rotating rod (32).

6. A storage device for polyethylene production according to claim 5, characterized in that: Two sets of scrapers (34) are installed at one end of several sets of stirring rods (33), and the outer sides of the two sets of scrapers (34) are in contact with the inner wall of the storage chamber (11).

7. A storage device for polyethylene production according to claim 1, characterized in that: The top of the filter chamber (12) is connected to the feed pipe (14), the bottom right side of the filter chamber (12) is connected to the return pipe (15), and the bottom of the storage chamber (11) is connected to the discharge pipe (16).

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