CN201760979U - Rotor gate type rubber continuous mixing extrusion equipment - Google Patents

Abstract

The utility model relates to a rotor gate type rubber continuous mixing and extruding equipment. The eccentric rotor rolls and rolls on the wall of the inner cavity of the stator cylinder to plasticize and mix the rubber. At the same time, a gate plate that is restricted by the stator and floats with the surface of the rotor blocks the flow of the rubber in the gap between the rotor and the stator along the circumferential direction of the rotor. And flow along the axis of the rotor to realize continuous mixing and extrusion of the rubber. The ram-type internal mixing unit consists of a stator with a cylindrical inner cavity, an eccentric rotor placed in the inner cavity of the stator, a ram arranged in the radial direction of the stator and constrained by the stator, and a retaining plate placed on both sides of the rotor. Multiple ram-type internal mixing units can be combined into a rubber continuous internal mixing extruder, which has the characteristics of short thermal mechanical action of the rubber material, good mixing effect and small fluctuation, low energy consumption and small volume of the equipment.

Description

Rotor ram type rubber continuous mixing extrusion equipment

technical field

The utility model relates to rubber mixing and processing equipment, in particular to rotor gate type rubber continuous mixing and extruding equipment.

technical background

With the continuous development of the subject of polymer materials, rubber products have been widely used in many aspects. The rubber materials used in the traditional rubber industry are mixed in batches. At present, the factories mainly use internal mixers for mixing. The internal mixer is an important achievement of rubber mixing machinery, and it is still a typical equipment in plasticizing and mixing. According to foreign statistics, 88% of the rubber in the rubber industry is made by internal mixers. During the processing of the internal mixer, the rubber is mainly mixed by shearing and mixing between the rotors in the internal mixing chamber, between the rotor and the chamber wall, and between the rotor and the top bolt and the discharge door. The mixing of the rubber materials by the internal mixer is intermittent, and these equipments belong to batch mixers, that is, the rubber materials must be mixed in the previous batch of rubber materials and the mixing chamber must be emptied before the next batch of mixing can be processed. The internal mixer has the characteristics of short mixing time, easy operation, and no special treatment of raw materials. However, due to the energy balance, the flow characteristics in the mixer and the quality difference between one batch and another batch of rubber, the improvement of the quality of the rubber is limited, and the development of the automobile industry has put forward higher requirements for the quality of rubber parts. Requirements, such as reducing costs under the premise of ensuring durable and smooth surface quality, and at the same time, traditional internal mixers have inherent defects such as low production efficiency, high energy consumption, complex production equipment, and large fluctuations in product quality. The development of internal mixing equipment has encountered a bottleneck, which has also greatly restricted the development of the rubber processing industry. The rubber processing industry is in urgent need of new breakthroughs in technology.

In order to reduce the energy consumption of rubber mixing and improve the quality of mixing products, the optimization research from process to equipment has been started for rubber mixing processing, such as the research on rubber mixing formula and the research on new rubber mixing rotor or screw. The research has improved the uniformity of product quality to a certain extent, and the production efficiency has also been improved to a certain extent, but its adaptability to materials is poor, and the processing energy consumption has not been significantly reduced, so it is difficult to achieve obvious high efficiency and energy saving effects.

Utility model content

The purpose of this utility model is to provide a rotor gate type rubber continuous mixing extrusion equipment to solve the problems of long thermomechanical history, high energy consumption, low efficiency and poor adaptability to materials in the rubber mixing process.

As shown in Figure 1-5, a rotor ram-type rubber continuous mixing extrusion equipment is composed of one or more ram-type internal mixing units, and the ram-type internal mixing unit is mainly composed of a hollow stator with a cylindrical inner cavity 1. Cylindrical rotor 2, retaining plate 3, gate plate 4, and retaining plate 5, wherein the rotor 2 is placed in the inner cavity of the stator 1 and is eccentric with the stator 1, and the outer surface of the rotor 2 is tangent to the surface of the inner cavity of the stator 1. The gate 4 arranged in the radial direction of the stator and constrained by the stator is placed in the through hole of the rectangular cross-section in the radial direction of the stator 1, and is bound by the annular grooves on the surfaces of the retaining plates 3 and 5 at both ends to float with the outer surface of the rotor 2, and the retaining plate 3 and the blocking plate 5 are respectively arranged on both sides of the stator 1.

The eccentricity e of the rotor 2 and the stator 1 is equal to the difference between the radius of the stator 1 and the radius of the rotor 2.

The gate plate 4 is arranged on the radius of the stator 1, and the height of the gate plate 4 is greater than the difference between the inner diameter of the cylinder of the stator 1 and the outer diameter of the cylinder of the rotor 2. The annular groove on the surface of the baffle plate 5 is constrained and tangent to the outer surface of the rotor 2, and floats up and down in the through hole of the radial rectangular section of the stator 1.

The gate plate 4, which is restricted by the stator 1 and floats with the surface of the rotor 2, blocks the flow of the rubber material along the circumferential direction of the rotor 2 in the gap between the rotor 2 and the stator 1, and flows out along the axial discharge gap B of the rotor 2, realizing continuous rubber material Mixing extrusion.

On both ends of the stator 1, on the opposite sides of the through-hole with a rectangular cross-section, there are feeding gaps A and discharging gaps B respectively.

Multiple ram-type internal mixing units can be superimposed and combined to form a rubber continuous internal mixing extruder.

The utility model utilizes the eccentric rotor to roll and roll on the wall surface of the inner cavity of the stator cylinder to make the rubber material plasticized and mixed. The flow is blocked and flows along the axis of the rotor to realize continuous mixing and extrusion of the rubber.

When working, with the eccentric rotation of the rotor, the material is squeezed into the ram-type mixing unit from the feeding gap, and at the same time, the eccentric rotor rolls and rolls on the inner wall of the stator cylinder and the rubber is plasticized under the external heating of the stator. Melting and mixing; and the ram floating with the surface of the rotor is restricted by the stator, so that the flow of the rubber material in the gap between the rotor and the stator along the circumferential direction of the rotor is blocked and flows out along the axial discharge gap of the rotor, thereby realizing continuous mixing of the rubber material extrude.

Compared with the traditional rubber plasticizing and banburying technology and equipment, the rotor gate type rubber continuous mixing transportation method and equipment adopted in the utility model have the following advantages:

1. The thermomechanical process experienced during the mixing and transportation process is greatly shortened, and the energy consumption of plasticizing and transportation is reduced;

2. The degree of material mixing is highly stable, the production efficiency is improved, and the quality of product dispersion and mixing is improved, which can be directly extruded and calendered.

3. The mixing and transportation process is completed in a very short thermomechanical process, and the volume of the corresponding plasticizing and transportation equipment is reduced;

4. The mixing and transportation capacity does not depend on the physical properties of the material, the stability of the plasticizing transportation is improved, and the adaptability to the material is improved.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the gate-type banburying unit of the utility model that incorporates materials from the stator side gap;

Fig. 2 is the A-A cross-sectional view of the ram-type internal mixing unit that takes in materials from the stator side gap;

Fig. 3 is a schematic diagram of the structure of the gate banburying unit that takes in materials from the gap on the top of the stator;

Fig. 4 is the B-B cross-sectional view of the gate banburying unit that takes in materials from the stator top gap;

Fig. 5 is a structural schematic diagram of a rotor ram type rubber continuous mixing extruder.

Detailed ways

Example 1

Referring to Figure 1 and Figure 2, the ram-type internal mixing unit is mainly composed of a hollow stator 1 with a cylindrical inner cavity, a cylindrical rotor 2 placed in the inner cavity of the stator 1 that is eccentric to the stator 1 and tangent to the inner cavity of the stator 1, and arranged on the The gate plate 4 in the rectangular cross-section through hole in the radial direction of the stator 1 is composed of the material blocking plate 3 and the material blocking plate 5 arranged on both sides of the rotor. The rotor 2 is installed eccentrically in the hollow stator 1 and is tangent to the surface of the inner cavity of the stator 1. The gate plate 4 is installed in the through hole of the rectangular section in the radial direction of the stator 1 and is constrained by the grooves on the surface of the retaining plate 3 and the retaining plate 5. , and is tangent to the outer surface of rotor 2. When the rotor 2 rotates clockwise, the volume of the closed space D formed by the ram 4, the inner cavity of the stator 1, the outer surface of the rotor 2 and the baffles 3 and 5 on both sides increases, and the material is squeezed into the ram type from the feeding gap A. Mixing unit, at the same time, the eccentric rotor 2 rolls and rolls on the inner wall of the stator 1 cylinder and under the auxiliary effect of the external heating of the stator 1, the rubber is plasticized, melted and mixed; Plate 4, so that the flow of the rubber material in the gap C between the rotor 2 and the stator 1 is blocked along the circumferential direction of the rotor 2, and the gap B is discharged along the axial direction of the rotor 2, and flows out through the gap between the stator partition 6 and the retaining partition 5, So as to realize the continuous mixing and extrusion of rubber.

Referring to Figure 3 and Figure 4, the material is taken into the material from the gap AA at the top of the stator 1, and the wall surface of the cylindrical inner cavity of the stator 1 is ground and compacted by the rolling and rolling action of the rotor 2, and at the same time, it is plasticized and melted under the auxiliary effect of external heating from the stator , and discharged from the discharge gap B on the stator 1.

Example 2

Referring to Fig. 5, the rotor ram type rubber continuous mixing extruder is mainly composed of ram type mixing units I, II, III, hopper 1, drive shaft core 2, diverter 3, transition sleeve 4 and other parts. The ram-type internal mixing units I, II and III are installed in series and stacked. The driving shaft core 2 is concentric with the stator 1 of the ram mixing unit I, II, III and eccentrically cooperates with the rotor 2 and the baffles 3, 5 and is connected in the form of a spline. The stator spacer 6 is placed between the ram mixer units I, II, and III, and is fixedly connected concentrically with the stator 1, and the retaining plates 3 and 5 are placed in the cavity of the stator spacer 6 . The eccentric direction of the stator 1 relative to the rotor 2 of the ram mixing unit I is opposite to the eccentric direction of the stator 1 relative to the rotor 2 of the ram mixing unit II, and the eccentricity of the stator 1 relative to the rotor 2 of the ram mixing unit III The direction is opposite to the eccentric direction of the stator 1 of the ram mixing unit II relative to the rotor 2, and the driving shaft core 2 is coaxial with the stator 1, but is eccentrically and fixedly connected with the rotor 2 of the ram mixing unit I, II, and III. The eccentric direction of the drive shaft core 3 relative to the rotor 2 of the ram banbury mixing unit I and III is opposite to the eccentric direction of the drive shaft core 2 relative to the rotor 2 of the ram banbury mixing unit II. The flow divider 3 is placed in the cylindrical cavity of the transition sleeve 4 and coaxially fixedly connected with the drive shaft core 2 . The hopper 1 is fixedly installed on the stator 1 of the gate mixer unit I. The discharge notch B on the stator 1 of the ram banbury unit I is connected with the feed notch A on the stator 1 of the ram banbury unit II, and the discharge notch B on the stator 1 of the ram banbury unit II is connected with the The feeding gap A on the stator 1 of the ram mixer unit III is connected. When the drive shaft core 2 drives the rotor 2 of the ram mixing unit Ⅰ, Ⅱ, and Ⅲ to rotate, the material from the hopper 1 is brought into the ram mixing unit Ⅰ, and after being plasticized, it enters the ram mixing unit Ⅱ, In III, it is further plasticized and homogenized, and then extruded through a die connected to the transition sleeve 4, cooled and shaped to obtain a product.

Claims (6)

1. continuous banburying extrusion equipment of rotor flashboard type rubber, it is characterized in that constituting by one or more flashboard type banburying unit combination, described flashboard type banburying unit is mainly by the hollow stator with cylindrical cavity (1), cylindrical rotor (2), backgauge dish (3), flashboard (4), backgauge dish (5) constitutes, its rotor (2) places the inner chamber and stator (1) off-centre of stator (1), rotor (2) outer surface and stator (1) surface of internal cavity are tangent, be arranged in the stator radial direction and be subjected to the flashboard (4) of stator constraint to place stator (1) radial direction square-section through hole, and floated with rotor (2) outer surface by the surperficial annular groove constraint of two ends backgauge dishes (3) (5), backgauge dish (3) and backgauge dish (5) are located at stator (1) both sides respectively.

2. equipment according to claim 1 is characterized in that the rotor (2) and the offset (e) of stator (1) equal the poor of stator (1) radius and rotor (2) radius.

3. equipment according to claim 1, it is characterized in that flashboard (4) is arranged on stator (1) radius, the height of flashboard (4) is poor greater than stator (1) cylindrical cavity diameter and rotor (2) cylinder apparent diameter, during the rotation of rotor (2) off-centre, flashboard (4) is subjected to stator (1) two ends striker plates (3) and the surperficial annular groove constraint of striker plate (5) and tangent with rotor (2) outer surface, fluctuates in the through hole of the radially square-section of stator (1).

4. equipment according to claim 1, be subjected to stator (1) constraint and with the flashboard (4) that floats in rotor (2) surface make sizing material in rotor (2) and stator (1) gap along the mobile quilt of rotor (2) circumferencial direction intercept and along rotor (2) axially discharging breach (B) flow out, realize that the continuous banburying of sizing material extrudes.

5. equipment according to claim 1 is characterized in that on stator (1) both ends of the surface, is positioned at the relative side of square-section through hole and offers charging breach (A) and discharging breach (B) respectively.

6. equipment according to claim 1 is characterized in that the stackable continuous banburying extruder of rubber that is combined in a plurality of flashboard type banburyings unit.

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