Meshing type stirring blade of polymer PTC (Positive Temperature Coefficient) internal mixer

Abstract

The utility model discloses a polymer PTC (Positive Temperature Coefficient) internal mixer meshing type stirring blade which comprises two cylindrical rotors which are symmetrical front and back and are horizontally arranged, two ends of each rotor are fixedly connected with connecting shafts, a plurality of flow channels are arranged on the surface of each rotor along the circumferential direction at equal intervals, meshing teeth are further arranged on the surface of each rotor and are positioned between the flow channels, and the connecting shafts are fixedly connected with the connecting shafts. The meshing teeth are arranged in the circumferential direction of the rotors at equal intervals, the meshing teeth are spirally distributed on the surfaces of the rotors, and the meshing teeth on the two rotors are meshed with each other. The cylindrical rotors are arranged, the meshed teeth which are in bilateral symmetry and are spirally arranged are arranged on the rotors, the spiral directions of the meshed teeth on the two rotors are opposite, shearing internal mixing is replaced by meshed extrusion of polymer PTC materials during rotary stirring internal mixing, the stirring effect is softer, and cutting damage is not prone to being caused; and the produced material has higher stability and resistance stability, and is beneficial to improving the quality of the product.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of internal mixer, concretely is a kind of high polymer PTC internal mixer meshing type stirring blade. BACKGROUND

[0002] High polymer PTC (Positive Temperature Coefficient, positive temperature coefficient) material is a kind of thermosensitive material with positive temperature coefficient effect, when temperature is lower, the resistance value of material remains basically unchanged within certain range;And when temperature reaches certain specific value, its resistance value suddenly rises with the rise of temperature, this specific temperature is called Curie temperature, subsequently, resistivity remains stable or slowly increases until reaching PTC effect termination point, so high polymer PTC material is very suitable as raw material of heat tracing cable.

[0003] By the existing internal mixer to high polymer PTC material, after using the high polymer PTC material to make heat tracing cable, we find that the resistance stability and material stability of heat tracing cable have declined, and the reason is mainly that the existing internal mixer mostly uses shear type blade, when shear type blade internal mixes high polymer PTC material, cutting is too violent, causing high polymer PTC material cutting injury, in order to improve the quality of heat tracing cable, our company designs and proposes a new type of high polymer PTC internal mixer meshing type stirring blade. UTILITARY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model provides a kind of high polymer PTC internal mixer meshing type stirring blade, to solve the problem that the existing internal mixer uses shear type blade to internal mix high polymer PTC material and is likely to cause high polymer PTC material cutting injury to affect resistance stability and material stability.

[0005] To solve the above technical problems, the utility model provides the following technical scheme:

[0006] A kind of high polymer PTC internal mixer meshing type stirring blade, including two cylindrical rotors that are symmetric and horizontally arranged, both ends of the rotor are fixedly connected with connecting shaft, the surface of the rotor is equidistantly provided with a plurality of flow channels along the circumference, the surface of the rotor is also provided with meshing teeth at the position between flow channels, the meshing teeth are equidistantly arranged along the circumference of the rotor, and the meshing teeth are distributed in spiral shape on the surface of the rotor, the meshing teeth on the two rotors are engaged with each other.

[0007] Preferably, the meshing teeth of the left half and the right half of the rotor surface present opposite spiral directions, and the spiral directions of the meshing teeth on the surfaces of the two rotors are also opposite.

[0008] Preferably, the flow channel positions on the two rotors correspond.

[0009] Preferably, the engagement teeth are cylindrical teeth, circular cone teeth or hemispherical teeth.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The utility model discloses a rotor is provided with the symmetrical spiral arrangement engagement tooth on the left and right, and the engagement tooth spiral direction on two rotors is opposite, and when rotating and stirring the dense mixing, the high polymer PTC material is replaced by the engagement extrusion, and the shear dense mixing is replaced, the stirring effect is more soft, and the cutting harm is not easy to cause, and the stability of the produced material and resistance stability are higher, and it is favorable to improve the quality of product, thereby solve the problem that the shear blade dense mixing high polymer PTC material of the existing dense mixer is easy to cause the cutting harm of high polymer PTC material and affect resistance stability and material stability. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the plan view of the utility model;

[0013] Fig. 2 It is the left view of the utility model.

[0014] In the drawing: 1, rotor;2, connecting shaft;3, flow channel;4, engagement tooth. DETAILED DESCRIPTION

[0015] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of protection of the utility model.

[0016] As Figs. 1-2 The utility model provides a kind of technical scheme: a kind of high polymer PTC dense mixer engagement type stirring blade, including two cylindrical rotors 1 that are symmetric and horizontally arranged, both ends of rotor 1 are fixedly connected with connecting shaft 2, and the surface of rotor 1 is equidistantly provided with several flow channels 3 along the circumference, and the flow channel 3 position on two rotors 1 corresponds;

[0017] The surface of rotor 1 is also provided with engagement tooth 4 at the position between flow channel 3, and engagement tooth 4 is cylindrical tooth, circular cone tooth or hemispherical tooth, and engagement tooth 4 is equidistantly arranged along the circumference of rotor 1, and engagement tooth 4 is distributed in spiral shape on the surface of rotor 1, the spiral direction of engagement tooth 4 in the left half and the right half of rotor 1 surface is opposite, and the spiral direction of engagement tooth 4 on the surface of two rotors 1 is also opposite, and the engagement tooth 4 on two rotors 1 is engaged with each other.

[0018] Working principle:

[0019] By setting symmetrically arranged helical meshing teeth 4 on the cylindrical rotor 1, with the meshing teeth 4 on the two rotors 1 having opposite helical directions, during the rotation and mixing process, the helical meshing teeth 4 follow the rotation of the rotor 1 to squeeze and push the polymer PTC material from all sides to the center. The flow channel 3 does not have meshing teeth 4, and the flow channel 3 increases the gap between the two rotors 1. The polymer PTC material gathered in the center is squeezed through the flow channel 3 and flows to both sides. During the flow process, it is squeezed again and repeatedly squeezed towards the center by the helical meshing teeth 4, completing the squeezing and meshing mixing process. By squeezing and meshing the polymer PTC material instead of shearing mixing, the mixing effect is gentler and less likely to cause material cutting damage.

[0020] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] 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 polymer PTC Banbury mixer interlocking type stirring blade, characterized by: The application relates to a double-cylinder rotor, which comprises two front-back symmetrical and horizontally arranged cylindrical rotors (1), the two ends of the rotors (1) are fixedly connected with connecting shafts (2), the surfaces of the rotors (1) are circumferentially and equidistantly provided with a plurality of flow channels (3), the surfaces of the rotors (1) are also provided with engaging teeth (4) at positions between the flow channels (3), the engaging teeth (4) are circumferentially and equidistantly arranged on the rotors (1), the engaging teeth (4) are helically distributed on the surfaces of the rotors (1), and the engaging teeth (4) on the two rotors (1) are engaged with each other.

2. A polymer PTC mixer interlocking type stirring blade according to claim 1, characterized in that: The helical directions of the engaging teeth (4) on the left half and the right half of the surfaces of the rotors (1) are opposite, and the helical directions of the engaging teeth (4) on the surfaces of the two rotors (1) are also opposite.

3. The polymer PTC mixer engaging type stirring blade according to claim 1, characterized in that: The positions of the flow channels (3) on the two rotors (1) are corresponding.

4. The polymer PTC mixer interlocking type stirring blade according to claim 1, characterized in that: The engaging teeth (4) are cylindrical teeth, circular-truncated-cone teeth or hemispherical teeth.

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