CN221161447U - Polypropylene particle double-screw extrusion device - Google Patents

Abstract

The utility model discloses a polypropylene particle double-screw extrusion device, which comprises a rotary extrusion motor, a driving gear box, a closed shell main body, a pair of rotary extrusion screws and a blanking box, wherein the rotary extrusion motor is arranged on the closed shell main body; the utility model relates to the technical field of polypropylene particle production, in the industry, the polypropylene particle molding production is generally realized by mechanical extrusion and single plane softening, the efficiency is low, and a bubble cavity in a molded product can sometimes influence the quality of molded particles.

Description

Polypropylene particle double-screw extrusion device

Technical Field

The utility model relates to the technical field of polypropylene particle production, in particular to a polypropylene particle double-screw extrusion device.

Background

Polypropylene particles refer to small particulate materials made of polypropylene resin, polypropylene is a common thermoplastic with good physical and processing properties, and polypropylene particles are commonly used as raw materials in the plastics processing industry. The utility model discloses a bidirectional screw extruder for producing polypropylene plastic particles, which comprises a base, wherein the upper end of the base is fixedly connected with a lower screw cylinder, an upper screw cylinder is arranged above the lower screw cylinder, connecting plates are fixedly connected to both sides of the upper screw cylinder and the lower screw cylinder, sliding rails are fixedly connected to both sides of the lower screw cylinder at the upper end of the base, a movable table is connected to the sliding rails in a sliding manner, a plurality of clamping sleeves are fixedly connected to the upper end of the movable table, and a connecting seat is fixedly connected to one side of the upper end of the movable table; the base is characterized in that fixing frames are fixedly connected to two sides of the upper end of the base, a movable frame is connected to the fixing frames in a sliding mode, a hopper is mounted on the movable frame, and a chassis is fixedly connected to the lower end of the hopper. According to the utility model, the chassis, the clamping blocks, the extension rod, the moving frame and the clamping sleeve are designed, the upper screw cylinder and the lower screw cylinder are separated by moving away the clamping sleeve in the ascending process of the hopper, and meanwhile, the hopper can drive the upper screw cylinder to ascend, so that a user can directly maintain the upper screw cylinder conveniently. The method can push the extruded polypropylene material, but is difficult to achieve uniformity, softness and the like and moderate in hardness, and aiming at the problems, a technical means for solving the problems possibly exists in the prior art, but the scheme is intended to provide an alternative or alternative technical scheme.

Disclosure of utility model

In order to achieve the above purpose, the utility model is realized by the following technical scheme: a polypropylene pellet twin screw extrusion apparatus comprising: the automatic feeding device comprises a rotary extrusion motor, a driving gear box, a closed shell main body, a pair of rotary extrusion screws and a blanking box, wherein the driving gear box is arranged on the rotary extrusion motor, the blanking box is arranged on the closed shell main body, the closed shell main body is connected with the driving gear box, the pair of rotary extrusion screws are respectively connected with the closed shell main body, a pneumatic extrusion rotary soaking structure is arranged in the blanking box, and a quick-dismantling combined assembly is arranged on the closed shell main body;

The pneumatic extrusion rotary soaking structure comprises: the device comprises a motor protection shell, a rotary motor, an extension gear box, a heating rotary shaft, a plurality of heating rods, a pressurizing air pump and a stop valve;

The motor protection shell is installed on the blanking box, the rotary motor is installed in the motor protection shell, the extension gear box is connected with the rotary motor, the extension gear box is connected with the heating rotary shaft, a plurality of heating rods are respectively installed on the heating rotary shaft, a plurality of heating rods are respectively connected with the inner side wall of the blanking box, the pressurized air pump is installed on the blanking box, and the stop valve is installed below the inner side of the blanking box.

It should be noted that, in the above, put polypropylene material into the unloading case, the rotation motor in the motor protective housing is started, the rotation motor drives the operation of extension gear box, the extension gear box drives the rotation of heating revolving shaft, a plurality of heating rods that set up on the heating revolving shaft are started simultaneously, the heating rods are evenly arranged from big to small and laminating unloading case inside wall under in the unloading case, make irregular polypropylene material after being stirred and softened by big heating rod in the top, flow gradually to the little heating rod department in below and be stirred, until after the basic homogeneity is in suitable hardness, start the pressurization air pump, the pressurization air pump can pressurize the unloading case, make the polypropylene material after the fusion move to the closure shell main part inboard, stop valve controllable outflow opportunity, make things convenient for top pressurization air pump to inside pressurization and adjustment unloading speed, afterwards start the rotary extrusion motor, the operation of drive gear box, drive gear box drives a pair of rotary extrusion screw rod and carries out intermeshing's extrusion rotary motion, extrude the polypropylene material of entering, until the finished product is discharged.

Preferably, the quick-release assembly comprises: a main body jogged cover, jogged sliding groove and jogged sliding key;

The main body embedding cover is provided with the embedding sliding key, the sealing shell main body is provided with the embedding sliding groove, the embedding sliding key is meshed with the embedding sliding groove, and the main body embedding cover is connected with the sealing shell main body;

In the above description, the main body fitting cover is tightly connected with the main body of the sealed shell through the fitting sliding groove and the fitting sliding key, when the main body fitting cover is installed, the fitting sliding groove on the main body of the sealed shell corresponds to the fitting sliding key on the main body fitting cover, and then the fitting sliding key at the head end of the main body of the sealed shell and the fitting sliding groove at the tail end of the main body fitting cover are relatively slidably inserted, so that the main body fitting cover and the main body of the sealed shell are tightly connected with each other to complete the installation, and when the main body fitting cover is required to be cleaned and maintained, the main body fitting cover is only required to be pulled out from the main body of the sealed shell, thereby being convenient and quick.

Preferably, a sealing cover is arranged on the discharging box;

preferably, an observation window is arranged on the blanking box;

Preferably, the sealing shell main body is provided with a sealing ring;

preferably, an access hole is formed in the motor protection shell.

Advantageous effects

The utility model provides a polypropylene particle double-screw extrusion device. The polypropylene particle double-screw extrusion device has the following beneficial effects that compared with the prior art: the industry is general through mechanical extrusion and single plane softening to polypropylene granule shaping production, inefficiency and sometimes can make appear bubble chamber influence the quality of shaping granule in the shaping article, this device sets up in the unloading incasement through the heating rod of not equidimension for the top polypropylene material fuses degree height, to the little heat after the below continuously provide required hardness and degree of combining, and exert pressure more evenly than traditional physical pressurization through the pressurization air pump from the top and make the finished product yields higher, and quick detach combination subassembly is convenient for clear up, promote the ease of use of this device greatly.

Drawings

Fig. 1 is a schematic three-dimensional structure of a polypropylene granule twin-screw extrusion device according to the present utility model.

Fig. 2 is a schematic diagram of a cross-sectional front view of a polypropylene granule twin-screw extruder according to the present utility model.

Fig. 3 is a schematic side view of a polypropylene granule twin-screw extrusion device according to the present utility model.

Fig. 4 is an enlarged partial schematic view of "a" in fig. 3.

In the figure: 1. a spin-extrusion motor; 2. a drive gear box; 3. a closed shell body; 4. rotating the extrusion screw; 5. discharging boxes; 6. a motor protective housing; 7. a rotary motor; 8. an extension gearbox; 9. heating the rotating shaft; 10. a heating rod; 11. a pressurized air pump; 12. a shut-off valve; 13. a main body fitting cover; 14. fitting the sliding groove; 15. and (5) embedding the sliding key.

Detailed Description

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

All electric parts and the adaptive power supply are connected through wires by the person skilled in the art, and a proper controller and encoder should be selected according to actual conditions so as to meet control requirements, specific connection and control sequence, and the electric connection is completed by referring to the following working principles in the working sequence among the electric parts, and the detailed connection means are known in the art, and mainly introduce the working principles and processes as follows, and do not describe the electric control.

Examples

According to the drawing 1-4, polypropylene materials are put into a blanking box 5, a rotary motor 7 in a motor protection shell 6 is started, the rotary motor 7 drives an extension gear box 8 to operate, the extension gear box 8 drives a heating rotary shaft 9 to rotate, a plurality of heating rods 10 arranged on the heating rotary shaft 9 are started simultaneously, the heating rods 10 are uniformly arranged from large to small and are attached to the inner side wall of the blanking box 5 from top to bottom in the blanking box 5, so that after the irregular polypropylene materials are stirred and softened by the large heating rods 10 above, the irregular polypropylene materials gradually flow to the small heating rods 10 below and are stirred until the basically uniform mixture is at proper hardness, a pressurizing air pump 11 is started, the pressurizing air pump 11 pressurizes the blanking box 5, the fused polypropylene materials move towards the inner side of a closed shell main body 3, a stop valve 12 can control outflow time, the pressurizing air pump 11 is convenient for pressurizing and adjusting the internal discharging speed, then a rotary extrusion motor 1 is started, the rotary extrusion motor 1 drives a driving gear box 2 to operate, and the gear box 2 drives a pair of rotary extrusion screws 4 to perform mutually meshed extrusion rotary extrusion molding, and the polypropylene materials are extruded until the finished polypropylene materials are discharged; the main body embedding cover 13 is tightly connected with the main body 3 of the closed shell through the embedding sliding groove 14 and the embedding sliding key 15, the embedding sliding groove 14 on the main body 3 of the closed shell is required to be mutually corresponding to the embedding sliding key 15 on the main body embedding cover 13 during installation, and then the embedding sliding key 15 at the head end of the main body 3 of the closed shell is relatively and slidably inserted into the embedding sliding groove 14 at the tail end of the main body embedding cover 13, so that the main body embedding cover and the main body 3 of the closed shell are tightly connected with each other to complete the installation, and the main body embedding cover 13 is required to be pulled out from the main body 3 of the closed shell during cleaning and maintenance.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A polypropylene pellet twin screw extrusion apparatus comprising: the rotary extrusion device is characterized in that the drive gear box (2) is arranged on the rotary extrusion motor (1), the blanking box (5) is arranged on the closed shell body (3), the closed shell body (3) is connected with the drive gear box (2), a pair of rotary extrusion screws (4) are respectively connected with the drive gear box (2), the pair of rotary extrusion screws (4) are respectively connected with the closed shell body (3), a pneumatic extrusion rotary soaking structure is arranged in the blanking box (5), and a quick-dismantling combined assembly is arranged on the closed shell body (3);

the pneumatic extrusion rotary soaking structure comprises: the device comprises a motor protection shell (6), a rotary motor (7), an extension gear box (8), a heating rotary shaft (9), a plurality of heating rods (10), a pressurizing air pump (11) and a stop valve (12);

The utility model discloses a blanking box, including blanking box (5) and blanking box, motor protection shell (6) are installed on blanking box (5), rotation motor (7) are installed in motor protection shell (6), extend gear box (8) with rotation motor (7) are connected, just extend gear box (8) with heating swivel shaft (9) are connected, and a plurality of heating rod (10) are installed respectively on heating swivel shaft (9), and a plurality of heating rod (10) respectively with blanking box (5) inboard lateral wall is connected, pressurization air pump (11) are installed on blanking box (5), stop valve (12) are installed blanking box (5) inboard below.

2. The polypropylene pellet twin screw extruder of claim 1, wherein the quick release assembly comprises: a main body jogged cover (13), jogged sliding groove (14) and jogged sliding key (15);

The main body embedded cover (13) is provided with the embedded sliding key, the sealed shell main body (3) is provided with the embedded sliding groove (14), the embedded sliding key (15) is meshed with the embedded sliding groove (14), and the main body embedded cover (13) is connected with the sealed shell main body (3).

3. A polypropylene pellet twin screw extruder according to claim 2, wherein the blanking box (5) is provided with a sealing cover.

4. A polypropylene pellet twin screw extrusion apparatus as claimed in claim 3, wherein the blanking box (5) is provided with an observation window.

5. A polypropylene pellet twin screw extrusion device as claimed in claim 4, wherein the containment body (3) is provided with a sealing ring.

6. The polypropylene granule twin-screw extrusion apparatus as claimed in claim 5, wherein the motor protective housing (6) is provided with an access opening.