CN210544982U - Novel spiral extrusion mechanism of extrusion granulator - Google Patents

Abstract

The utility model belongs to extrusion granulator field, especially, novel extrusion granulator's screw extrusion mechanism, it includes mounting bracket, heating box, recipient, extrusion screw, feed inlet, extrusion motor, speed reducer, master gear, minute gear, extrusion head, the heating box is installed on the mounting bracket, two the recipient symmetry is installed on the mounting bracket and is located the heating box, the rotatable installation of extrusion screw is in the recipient, the extrusion motor is installed on the mounting bracket and is located recipient feed inlet side, the speed reducer is installed on the mounting bracket and is connected with the extrusion motor pivot the extrusion head is installed in recipient feed inlet side looks remote site, and this mechanism makes by being heated more evenly of extrusion material through two independent recipients, and then makes it obtain better extrusion effect.

Description

Novel spiral extrusion mechanism of extrusion granulator

Technical Field

The utility model relates to an extrusion granulator technical field especially relates to a novel extrusion granulator's screw extrusion mechanism.

Background

The extrusion granulator is a dry granulation process for agglomerating solid materials by using pressure, and is generally divided into a double-roller extrusion granulator and a screw extrusion granulator, wherein the screw extrusion granulator is suitable for extrusion granulation of some plastic particles;

the existing screw type extrusion granulator is divided into a single screw and a multi-screw, but the problem that the quality of extrusion granulation is reduced due to the fact that the gap between the extrusion screw and the cylinder wall is enlarged when the machine type is large-sized exists, the reason is that the heating of the extrusion raw material is uneven due to the increase of the gap, and softening granulation of the raw material is influenced, so that a screw extrusion mechanism of a novel extrusion granulator is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of uneven heating of raw materials in the extrusion process in the prior art and providing a novel screw extrusion mechanism of an extrusion granulator.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screw extrusion mechanism of a novel extrusion granulator comprises a mounting rack, a heating box body, an extrusion cylinder, an extrusion screw, a feed inlet, an extrusion motor, a speed reducer, a main gear, a branch gear and an extrusion head, the heating box body is arranged on the mounting frame, the two extrusion cylinders are symmetrically arranged on the mounting frame and are positioned in the heating box body, the extrusion screw is rotatably arranged in the extrusion cylinder, the feed inlet is arranged above one end of the extrusion cylinder, the extrusion motor is arranged on the mounting frame and positioned at the side of the feed inlet of the extrusion cylinder, the speed reducer is arranged on the mounting frame and connected with the rotating shaft of the extrusion motor, the main gear is rotatably arranged on the mounting frame and is connected with an output shaft of the speed reducer, the two sub-gears are rotatably arranged on the mounting frame and are meshed with the main gear, one end of the sub-gear is connected with the extrusion screw, and the extrusion head is installed at the opposite end of the side of the feed opening of the extrusion container.

Preferably, the heating box body comprises a heating pipe, a heat conduction layer, a heating interface and contact resistance temperature sensors, the heating pipe is wound on the extrusion container, the heat conduction layer is coated on the heating pipe and the extrusion container, the heating interface is arranged at two ends of the heating pipe, and the contact resistance temperature sensors are respectively embedded in the middle of the heat conduction layer.

Preferably, the winding mode of the heating pipe on the extrusion container is that the winding density is gradually sparse from the middle to two sides.

Preferably, the feed inlet is provided with a feed hopper, the feed hopper is arranged above the feed inlet, and the screw thread directions of the two extrusion screws are opposite.

Preferably, the extrusion head is provided with conical discharge ports, and the three conical discharge ports are inclined downwards on the extrusion head.

Preferably, the lower part of the outer end of the conical discharge hole is arc-shaped.

In the utility model, through the structural design, the screw extrusion mechanism of the novel extrusion granulator increases the working efficiency of the mechanism by using a power source to drive two extrusion cylinders, and the other two extrusion cylinders increase the contact area between the cylinder wall and the raw material so as to realize the high-efficiency heating extrusion granulation of the raw material;

the extrusion barrel is heated in a steam circulation heating mode, the heating intensity of different areas of the extrusion barrel is changed by changing the winding density of a steam pipeline, temperature distribution with low temperature at two sides and high temperature at the middle part is formed, and extrusion molding of raw materials is facilitated;

the extruded raw materials are discharged more smoothly through the conical discharge port and the arc structures at the lower part of the outer end of the conical discharge port, and the arc structures prevent the edges of the discharge port from damaging the extruded raw materials so as to reduce the quality of the extruded raw materials;

and then this mechanism realizes the high-efficient extrusion of raw materials and product quality is higher.

Drawings

Fig. 1 is a schematic structural view of a screw extrusion mechanism of a novel extrusion granulator according to the present invention;

3 fig. 3 2 3 is 3 a 3 schematic 3 sectional 3 view 3 of 3 a 3 line 3 a 3- 3 a 3 in 3 fig. 3 1 3 of 3 a 3 screw 3 extrusion 3 mechanism 3 of 3 a 3 novel 3 extrusion 3 granulator 3 according 3 to 3 the 3 present 3 invention 3; 3

Fig. 3 is a schematic cross-sectional view of the screw extrusion mechanism of the novel extrusion granulator shown in fig. 1 along line B-B;

fig. 4 is the utility model provides a novel extrusion granulator's screw extrusion mechanism's C to looking sideways at structural formula schematic diagram 1.

In the figure: 1. a mounting frame; 2. heating the box body; 21. heating a tube; 22. a heat conductive layer; 23. a heating interface; 24. a contact resistance temperature sensor; 3. an extrusion cylinder; 4. extruding the screw; 5. a feeding hole, 6, an extrusion motor, 7 and a speed reducer; 8. a main gear; 9. gear division; 10. an extrusion head; 11. a feed hopper; 12. a conical discharge hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example (b):

referring to fig. 1-4, a novel spiral extrusion mechanism of an extrusion granulator comprises an installation frame 1, a heating box body 2, extrusion barrels 3, extrusion screws 4, a feed inlet 5, an extrusion motor 6, a speed reducer 7, a main gear 8, a branch gear 9 and an extrusion head 10, wherein the heating box body 2 is installed on the installation frame 1, the two extrusion barrels 3 are symmetrically installed on the installation frame 1 and located in the heating box body 2, the extrusion screws 4 are rotatably installed in the extrusion barrels 3, the feed inlet 5 is arranged above one end of the extrusion barrel 3, the extrusion motor 6 is installed on the installation frame 1 and located on the feed inlet 5 side of the extrusion barrel 3, the speed reducer 7 is installed on the installation frame 1 and is connected with the extrusion motor 6 in a rotating mode, the main gear 8 is rotatably installed on the installation frame 1 and is connected with an output shaft of the speed reducer 7, the two branch gears 9 are rotatably installed on the installation frame, one end of the branch gear 9 is connected with the extrusion screw rod 4, and the extrusion head 10 is arranged at the opposite end of the side of the feed inlet 5 of the extrusion cylinder 3. The extrusion motor 6 increases the moment through the speed reducer 7 and then drives the two decompression screws 4 to extrude the raw materials in the extrusion cylinder 3;

the utility model discloses in, heating box 2 includes heating pipe 21, heat-conducting layer 22, heating interface 23, contact resistance temperature sensor 24, the winding of heating pipe 21 is installed on recipient 3, the cladding of heat-conducting layer 22 is on heating pipe 21 and recipient 3, heating interface 23 is installed in heating pipe 21 both ends, contact resistance temperature sensor 24 inlays respectively to be adorned and installs in the middle part of heat-conducting layer 22. The extrusion barrel 3 is heated by high-pressure steam in the heating pipe 21, the heat conducting layer 22 can be made of aluminum so as to facilitate heat transmission, and the contact type resistance sensor 24 is used for transmitting a temperature signal to the outside for temperature control;

the utility model discloses in, the winding mode of heating pipe 21 on recipient 3 is from the centre to both sides winding density sparse gradually. The heating temperature of the middle part of the extrusion cylinder 3 is higher than that of the two sides by the heating pipes 21 with different winding densities, so that the extrusion molding of the raw materials is facilitated;

the utility model discloses in, be equipped with feed hopper 11 on feed inlet 5, feed hopper 11 installs in feed inlet 5 top, two extrusion screw 4's screw thread opposite direction. The feeding hopper 11 is used for feeding raw materials, and the rotating directions of the two extrusion screws 4 are opposite, so that the thread directions of the two extrusion screws 4 are opposite, and the raw materials are conveniently extruded towards the extrusion head 10;

in the utility model discloses, be equipped with toper discharge gate 12 on the extrusion head 10, it is three toper discharge gate 12 is opened on extrusion head 10 to the downward slope. The conical discharge port 12 is convenient for extruding the pressed raw materials;

in the utility model, the outer end below of the conical discharge hole 12 is arc-shaped. The arc-shaped structure below the conical discharge port 12 avoids the damage to the molded raw material due to sharp friction between the discharge port and the molded raw material;

the working process is as follows:

in the utility model, the mounting frame 1 is the main framework of the extrusion granulator, and the heating box body 2 is used for being isolated from the outside;

firstly, feeding two feeding hoppers 11 through a feeding mechanism of an extrusion granulation system, and then feeding raw materials into an extrusion cylinder 3 through a feeding hole 5;

meanwhile, the extrusion motor 6 is electrified to work, the main gear 9 is driven to rotate after the speed is reduced by the speed reducer 7 and the moment is increased, the main gear 9 further drives the two sub-gears 9 meshed with the main gear to rotate, and the sub-gears 9 further drive the extrusion screw 4 to rotate;

the extrusion screw 4 rotates to drive the raw material in the extrusion container 3 to one end, and finally, the extrusion head is extruded in the extrusion container 3;

meanwhile, the heating interface 23 is connected with an external heating boiler, high-temperature steam is utilized to enter the heat conduction layer 22 through the heating pipe 21 to conduct heat so as to heat the extrusion container 3, and the raw material in the extrusion container 3 is heated after the extrusion container 3 is heated, so that the raw material is accelerated to enter a molten state so as to be convenient for extrusion forming of the raw material;

then the pressed raw materials are extruded into strips through a conical discharge hole 12 on an extrusion head 10 and discharged, and then the next production link is carried out;

the contact resistance temperature sensor 24 facilitates sensing of the temperature of the heat conductive layer 22 and facilitates control of the temperature of the heat conductive layer 22 by, for example, controlling the amount of steam;

two extrusion container 3 of this mechanism have increased raw materials heated area on the one hand, have increased production efficiency on the one hand.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A novel spiral extrusion mechanism of an extrusion granulator comprises an installation frame (1), a heating box body (2), extrusion cylinders (3), extrusion screw rods (4), a feed inlet (5), extrusion motors (6), a speed reducer (7), a main gear (8), a sub-gear (9) and extrusion heads (10), and is characterized in that the heating box body (2) is installed on the installation frame (1), the two extrusion cylinders (3) are symmetrically installed on the installation frame (1) and positioned in the heating box body (2), the extrusion screw rods (4) are rotatably installed in the extrusion cylinders (3), the feed inlet (5) is opened above one ends of the extrusion cylinders (3), the extrusion motors (6) are installed on the installation frame (1) and positioned at the feed inlet (5) side of the extrusion cylinders (3), the speed reducer (7) is installed on the installation frame (1) and is connected with the extrusion motors (6) in a rotating manner, the main gear (8) is rotatable to be installed on mounting bracket (1) and with speed reducer (7) output shaft, two branch gear (9) is rotatable to be installed on mounting bracket (1) and with main gear (8) interlock, branch gear (9) one end is connected with extrusion screw (4), extrusion head (10) are installed in extrusion cylinder (3) feed inlet (5) side opposite end.

2. The screw extrusion mechanism of the novel extrusion granulator according to claim 1, wherein the heating box (2) comprises a heating pipe (21), a heat conducting layer (22), heating interfaces (23) and contact resistance temperature sensors (24), the heating pipe (21) is wound and installed on the extrusion cylinder (3), the heat conducting layer (22) is wrapped on the heating pipe (21) and the extrusion cylinder (3), the heating interfaces (23) are installed at two ends of the heating pipe (21), and the contact resistance temperature sensors (24) are respectively installed in the middle of the heat conducting layer (22) in an embedded manner.

3. The screw extrusion mechanism of the novel extrusion granulator according to claim 2, wherein the heating pipe (21) is wound on the extrusion cylinder (3) in a way that the winding density is gradually sparse from the middle to the two sides.

4. The screw extrusion mechanism of the novel extrusion granulator according to claim 1, wherein a feed hopper (11) is arranged on the feed port (5), the feed hopper (11) is installed above the feed port (5), and the screw directions of the two extrusion screws (4) are opposite.

5. The screw extrusion mechanism of the novel extrusion granulator is characterized in that the extrusion head (10) is provided with conical discharge ports (12), and three conical discharge ports (12) are obliquely downwards formed on the extrusion head (10).

6. The screw extrusion mechanism of the novel extrusion granulator according to claim 5, wherein the lower part of the outer end of the conical discharge port (12) is arc-shaped.

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