CN217916691U

CN217916691U - Extruder screw

Info

Publication number: CN217916691U
Application number: CN202222016869.8U
Authority: CN
Inventors: 吴越; 王思语; 徐涛; 宴青; 覃煌
Original assignee: Foshan Dopewin Decoration Material Technology Co ltd
Current assignee: Foshan Dopewin Decoration Material Technology Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-29
Anticipated expiration: 2032-08-02

Abstract

An extruder screw comprises a screw body, a heat conduction shell, a heat absorption pipe, a first water tank and a second water tank; the screw rod main body comprises a rod body, an installing head and a thread group, the thread group is installed on the outer surface of the rod body, a heat dissipation cavity is formed in the rod body in a hollowed mode, a heat conduction shell is installed in the heat dissipation cavity, and the installing head is installed at the end portion of the screw rod main body; a heat absorption pipe is arranged in the heat conduction shell, two ends of the heat absorption pipe protrude out of the mounting head, and two ends of the heat absorption pipe are respectively communicated with the first water tank and the second water tank; the inner wall in heat dissipation chamber is equipped with the mounting groove, and the outer wall of heat conduction shell is equipped with the mounting bar, and the mounting bar is installed in the mounting groove, and installs the head and support in the tip of heat conduction shell. The utility model provides an extruder screw rod according to above-mentioned content, solved the problem that the inside heat conduction shell of extruder screw rod deviates from easily among the prior art.

Description

Extruder screw

Technical Field

The utility model relates to a screw rod technical field especially relates to an extruder screw rod.

Background

The screw extruder depends on the pressure and the shearing force generated by the rotation of the screw, so that materials can be fully plasticized and uniformly mixed and are molded through a neck mold. Plastic extruders can be largely classified into twin-screw extruders, single-screw extruders and, rarely, multi-screw extruders and screw-less extruders, so that the common extruders use screws.

Extruder screw rod after long-time work, its inside can produce a large amount of heats, can set up the heat conduction shell in the inside of extruder screw rod among the prior art usually and derive the heat, but the heat conduction shell is deviating from easily following screw rod pivoted in-process to influence radiating efficiency and radiating quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extruder screw rod has solved the problem that the inside heat conduction shell of extruder screw rod among the prior art is deviate from easily.

To achieve the purpose, the utility model adopts the following technical proposal:

an extruder screw comprises a screw body, a heat conduction shell, a heat absorption pipe, a first water tank and a second water tank;

the screw rod main body comprises a rod body, an installing head and a thread group, the thread group is installed on the outer surface of the rod body, a heat dissipation cavity is formed in the rod body in a hollowed mode, the heat conduction shell is installed in the heat dissipation cavity, and the installing head is installed at the end portion of the screw rod main body;

the heat-absorbing pipe is arranged in the heat-conducting shell, two ends of the heat-absorbing pipe protrude out of the mounting head, and two ends of the heat-absorbing pipe are respectively communicated with the first water tank and the second water tank;

the inner wall of heat dissipation chamber is equipped with the mounting groove, the outer wall of heat conduction shell is equipped with the mounting bar, the mounting bar install in the mounting groove, just the installation head support in the tip of heat conduction shell.

The heat absorption pipe is characterized by further comprising two temperature sensors, and the two temperature sensors are arranged at two ends of the heat absorption pipe.

Specifically, the thread group comprises a feeding thread, a compression thread and a plasticizing thread, and the feeding thread, the compression thread and the plasticizing thread are arranged in sequence.

Preferably, the screw rod main part still includes protruding strip, protruding strip is located in the thread groove of compression screw thread, the up end of protruding strip is the horizontal plane that the level extends, the lower terminal surface of protruding strip be with the horizontal plane forms inclination's inclined plane, the horizontal plane passes through the chamfer and passes through to the inclined plane, the chamfer is located protruding strip's the outside.

In some embodiments, the screw body further comprises a premix section between the mounting head and the feed flight;

the premixing section is provided with a plurality of prepressing pieces, one end of each prepressing piece is integrally fixed on the rod body, and the other end of each prepressing piece is an arc-shaped prepressing surface.

Furthermore, the plurality of preforming pieces are arranged in a spiral shape from top right to bottom.

Specifically, the offset angle of two of the preforms between adjacent upper and lower positions is 10-30 °.

Compared with the prior art, one of the technical schemes has the following beneficial effects:

through mounting bar, mounting groove and installation head, make the installation of heat conduction shell firm, difficult not hard up to prevent that the heat conduction shell from deviating from.

Drawings

FIG. 1 is a schematic structural view of an extruder screw according to one embodiment of the present invention;

FIG. 2 is a schematic structural view of a screw body according to an embodiment of the present invention;

FIG. 3 is a schematic view of a portion of FIG. 2 at a larger scale;

FIG. 4 is a schematic structural view of a pre-pressing surface and a pre-pressing sheet according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an included angle b according to an embodiment of the present invention;

wherein: the screw comprises a screw body 1, a rod body 11, a mounting groove 111, a mounting head 12, a thread group 13, a feeding thread 131, a compression thread 132, a plasticizing thread 133, a protruding strip 14, a horizontal plane 141, an inclined plane 142, a chamfer 143, a premixing section 15, a pre-pressing piece 151, a pre-pressing surface 152, a heat conducting shell 2, a mounting strip 21, a heat absorbing pipe 3, a first water tank 4, a second water tank 5, a fixing piece 6 and a temperature sensor 7.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "inner", "outer end", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In one embodiment of the present invention, as shown in fig. 1 to 5, an extruder screw includes a screw body 1, a heat-conducting shell 2, a heat-absorbing pipe 3, a first water tank 4, and a second water tank 5; the screw rod main body 1 comprises a rod body 11, an installation head 12 and a thread group 13, the thread group 13 is installed on the outer surface of the rod body 11, a heat dissipation cavity is formed in the rod body 11 in a hollow mode, the heat conduction shell 2 is installed in the heat dissipation cavity, and the installation head 12 is installed at the end portion of the screw rod main body 11; the heat-absorbing pipe 3 is arranged in the heat-conducting shell 2, two ends of the heat-absorbing pipe 3 protrude out of the mounting head 12, and two ends of the heat-absorbing pipe 3 are respectively communicated with the first water tank 4 and the second water tank 5; the inner wall of heat dissipation chamber is equipped with mounting groove 111, the outer wall of heat conduction shell 2 is equipped with mounting bar 21, mounting bar 21 install in mounting groove 111, just installation head 12 support in the tip of heat conduction shell 2. The screw rod main body 1 is connected with an external drive, the external drive is a motor, when the screw rod main body works, the motor drives the mounting head 12 to rotate, the mounting head 12 drives the rod body 11 and the thread group 13 on the outer surface of the rod body 11 to rotate, the thread group 13 and the rod body 11 are of an integrally formed structure, so that added materials are in a molten state and conveyed, a large amount of heat is generated when the rod body 11 and the thread group 13 rotate, the heat conduction shell 2 arranged in the heat dissipation cavity absorbs the generated heat, the heat conduction shell 2 transmits the heat to the heat absorption pipe 3, the heat absorption pipe 3 transmits the heat to the outside, specifically, the first water tank 4 introduces cooling water into the heat absorption pipe 3, then the cooling water in the heat absorption pipe 3 absorbs the heat and then discharges the heat to the second water tank 5, the purpose of cooling the screw rod main body 1 is achieved, the screw rod main body 1 is prevented from being in a high-temperature state for a long time and being damaged or influencing the production quality, the effect of prolonging the service life and improving the internal utilization rate of the screw rod extruder is achieved, and further, the heat utilization rate of the screw rod main body 5 can be recycled, and the screw rod extruder is improved. It should be noted that the heat absorbing pipe 3 does not rotate, two ends of the heat absorbing pipe 3 protrude from the mounting head 12, a fixing member 6 is disposed on one side of the mounting head 12 for fixing the heat absorbing pipe 3, the fixing member 6 is fixed inside the extruder, and preferably, the heat conducting shell 2 is made of aluminum. In this embodiment, will heat conduction shell 2 install in during the heat dissipation cavity, specifically will mounting bar 21 install in mounting groove 111, thereby make heat conduction shell 2 can follow the body of rod 11 rotates, and install the tip of the body of rod 11 installation head 21 support in heat conduction shell 2 prevents that heat conduction shell 2 from deviating from, thereby guarantees heat dissipation efficiency and radiating quality of heat conduction shell 2.

As shown in fig. 1, the heat absorption tube further comprises two temperature sensors 7, and the two temperature sensors 7 are mounted at two ends of the heat absorption tube 3. In this embodiment, install the both ends of heat-absorbing pipe 3 temperature sensor 7 to can real-time supervision the temperature regulation is convenient for carry out to the temperature regulation of intaking and the leaving water temperature of heat-absorbing pipe 3, in order to avoid can't reach the purpose that can but cool down, perhaps the cooling water is crossed because of the temperature and is crossed lowly and make the material be in the molten state, thereby influences production quality.

As shown in fig. 2, the screw thread group 13 includes a feeding screw 131, a compression screw 132 and a plasticizing screw 133, and the feeding screw 131, the compression screw 132 and the plasticizing screw 133 are arranged in sequence. In this embodiment, during operation, the material passes through thread group 13 is processed, specifically is pay-off screw thread 131 preheats the material to drive the material through its self rotation and carry and push, make the material enter into compression screw thread 132, compression screw thread 132 melts, mixes and suppresses the material, makes the material be in the molten condition, thereby is convenient for compression screw thread 132 carries the material to through the pivoted mode plastify screw thread 133, plastify screw thread 133 is plastified the material, makes the material follow under the state of level pressure, ration and level temperature the end of screw rod main part 1 is extruded, reaches the improvement extruder screw rod production quality's effect.

As shown in fig. 4, the screw body 1 further includes a protruding strip 14, the protruding strip 14 is disposed in the thread groove of the compression thread 132, an upper end surface of the protruding strip 14 is a horizontal surface 141 extending horizontally, a lower end surface of the protruding strip 14 is an inclined surface 142 forming an inclined angle with the horizontal surface 141, the horizontal surface 141 is transited to the inclined surface 142 through a chamfer 143, and the chamfer 143 is located at an outermost side of the protruding strip 14. In this embodiment, the protruding strips 14 are arranged in the screw grooves of the compression screw threads 132, and the pressing area of the material is increased by the protruding strips 14 when the plastic is pressed, so that the pressing example of the compression screw threads 132 on the material is increased, and the mixing uniformity of the screw threads of the extruder is increased. Further, the protruding strip 14 contacts with the molten material through the chamfer 143, and crushes the unmelted material to form a state of mixing a solid phase and a liquid phase, the two ends of the chamfer 143 are respectively the horizontal plane 141 and the inclined plane 143, and a certain inclination angle is formed between the horizontal plane 141 and the inclined plane 142, so that the protruding strip 14 can contact with the material at multiple angles and press the material, the materials in different states can be fully sheared at the position and enter the molten state, the melting degree of the material is improved, and the problem of incomplete melting of the material in the compression screw 132 in the prior art is solved.

As shown in fig. 2, the screw body 1 further includes a premixing section 15, and the premixing section 15 is located between the mounting head 12 and the feeding screw 131; the premixing section 15 is provided with a plurality of preforming pieces 151, one end of each preforming piece 151 is integrally fixed to the rod body 11, and the other end of each preforming piece 151 is an arc-shaped prepressing surface 152. In this embodiment, the premixing section 15 is used for premixing materials before feeding, and preliminary pre-crushing and mixing are performed on the materials through the pre-pressing surface 152 at one end of the pre-pressing piece 151, so that the materials can be preliminarily crushed and enter the feeding screw thread 131 in a more dispersed state, and thus the protruding strips 14 of the compression screw thread 132 can compress the materials, and the effect of improving the extrusion efficiency of the extruder screw is achieved.

As shown in fig. 4, the plurality of pre-pressing pieces 151 are arranged in a spiral shape from top to bottom. In this embodiment, the pre-pressing pieces 151 are arranged in a spiral shape from top to bottom, and the upper and lower ends of the pre-mixing section 15 are arranged in a spiral shape, so that the pre-mixing section has a material conveying function when rotating, and can convey materials to the feeding screw 131, thereby achieving the effect of improving the conveying efficiency of the pre-mixing section 15.

As shown in fig. 5, the offset angle of two of the pre-pressing pieces 151 between adjacent upper and lower positions is 10-30 °. In this embodiment, the pre-pressing pieces 151 are connected with the axis of the rod 11 to form an included angle b, and the included angle b is 10 to 30 degrees, so that the material can be conveyed conveniently.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An extruder screw, characterized in that: the heat absorption device comprises a screw rod main body, a heat conduction shell, a heat absorption pipe, a first water tank and a second water tank;

2. An extruder screw according to claim 1, wherein: the heat absorption pipe is characterized by further comprising two temperature sensors, and the two temperature sensors are mounted at two ends of the heat absorption pipe.

3. An extruder screw according to claim 1, wherein: the thread group comprises a feeding thread, a compression thread and a plasticizing thread, and the feeding thread, the compression thread and the plasticizing thread are sequentially arranged.

4. An extruder screw according to claim 3, wherein: the screw rod main part still includes protruding strip, protruding strip is located in the thread groove of compression screw thread, the up end of protruding strip is the horizontal plane of horizontal extension, the lower terminal surface of protruding strip be with the horizontal plane forms inclination's inclined plane, the horizontal plane passes through the chamfer transition extremely the inclined plane, the chamfer is located protruding strip's the outside.

5. An extruder screw according to claim 3, wherein: the screw body further comprises a premixing section, and the premixing section is positioned between the mounting head and the feeding thread;

6. An extruder screw according to claim 5, wherein: the plurality of preforming pieces are arranged in a spiral shape from top right to bottom.

7. An extruder screw according to claim 6, wherein: the offset angle of two of the pre-compression sheets between adjacent upper and lower positions is 10-30 degrees.