Temperature control structure of screw extruder and screw extruder

Abstract

The utility model discloses a temperature control structure of a screw extruder and the screw extruder. The temperature control structure of the screw extruder comprises a screw and a machine barrel, and the screw is arranged in the machine barrel; a plurality of first temperature control areas and at least one second temperature control area are arranged on the machine barrel, and the second temperature control area is arranged close to the discharging end of the machine barrel; a heater and a first temperature sensor are arranged in each of the first temperature control area and the second temperature control area; the heater and the first temperature sensor are connected with the temperature control module; the second temperature control area is provided with a first fan; the first fan comprises a variable frequency motor, and the variable frequency motor is connected with the temperature control module. The screw extruder comprises the temperature control structure of the screw extruder. The first fan with the variable frequency motor is arranged in the second temperature control area, and the variable frequency motor of the first fan can change the frequency and the rotating speed in real time according to the temperature of the second temperature control area, so that the temperature of the second temperature control area is adjusted in real time, and the condition that the temperature of the discharging end of the machine barrel is unstable is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of screw extruders, and in particular relates to a temperature control structure of a screw extruder and a screw extruder. Background Art

[0002] When the chemical fiber industry uses screw extruders for industrial production, the temperature of the extruder has an important influence on the performance and quality of the extruded products. Therefore, it is necessary to finely control the temperature of each section of the screw. The industry usually performs temperature control on the screw partitions. For details, please refer to the patent document with announcement number CN219214054U. However, the technical solution recorded in the patent document is to perform temperature-sensing automatic on-off command control on the temperature of each zone, that is, if the temperature exceeds the preset threshold, the cooling motor is turned on, and if it is lower than the preset threshold, the cooling motor is turned off. The above scheme cannot accurately control the temperature of each zone, because in the actual production process, due to the shear heat problem between the screw and the material, the temperature control of the area close to the discharge end of the barrel is poor, the temperature fluctuates greatly, and it is not conducive to production.

[0003] Therefore, it is urgent to propose a temperature control structure of a screw extruder. Utility Model Content

[0004] In view of the above-mentioned shortcomings or deficiencies of the prior art, the technical problem to be solved by the present application is to provide a temperature control structure of a screw extruder and a screw extruder.

[0005] To solve the above technical problems, this application is implemented through the following technical solutions:

[0006] The present application proposes a temperature control structure of a screw extruder, comprising: a screw and a barrel, wherein the screw is arranged in the barrel; the barrel is provided with a plurality of first temperature control zones and at least one second temperature control zone, wherein the second temperature control zone is arranged near the discharge end of the barrel; a heater and a first temperature sensor are arranged in both the first temperature control zone and the second temperature control zone; the heater and the first temperature sensor are both connected to a temperature control module; a first fan is arranged in the second temperature control zone; the first fan comprises: a variable frequency motor, and the variable frequency motor is connected to the temperature control module.

[0007] Optionally, in the temperature control structure of the screw extruder, a second fan is further provided in the first temperature control zone.

[0008] Optionally, in the temperature control structure of the screw extruder, the second fan comprises: an industrial frequency motor, and the industrial frequency motor is electrically connected to the temperature control module.

[0009] Optionally, in the temperature control structure of the screw extruder, the heater is integrally arranged on the barrel.

[0010] Optionally, in the temperature control structure of the screw extruder, the heater comprises: a heating wire.

[0011] Optionally, in the temperature control structure of the screw extruder mentioned above, the temperature control module includes: a PLC module.

[0012] Optionally, in the temperature control structure of the screw extruder, a heat preservation box is further provided outside the first temperature control zone and the second temperature control zone.

[0013] Optionally, in the temperature control structure of the screw extruder, a second temperature sensor is provided at the discharge end of the barrel.

[0014] Optionally, in the temperature control structure of the screw extruder, the first temperature sensor and / or the second temperature sensor comprises: a platinum resistor.

[0015] The present application also proposes a screw extruder, comprising the temperature control structure of the screw extruder mentioned above.

[0016] Compared with the prior art, this application has the following technical effects:

[0017] The present application utilizes a first temperature control zone and a second temperature control zone to control the temperature of a screw extruder, and in particular, a first fan with a variable frequency motor is arranged in the second temperature control zone at the discharge end of the barrel. The variable frequency motor of the first fan can change the frequency and speed in real time according to the temperature of the second temperature control zone, so that the temperature of the second temperature control zone is adjusted in real time, thereby improving the unstable temperature at the discharge end of the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 : A schematic diagram of the structure of an embodiment of the present application;

[0020] In the figure: screw 1, barrel 2, first temperature control zone 3, second temperature control zone 4, first fan 5, second fan 6, heater 7, insulation box 8, second temperature sensor 9, gear box 10, cooling water jacket 11, bottom plate 12, bracket 13, discharge flange 14, discharge port 15. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] like Figure 1 As shown, one of the embodiments of the present application is a screw extruder for processing polyester industrial yarn, and a temperature control structure of a screw extruder is proposed, including: a screw 1 and a barrel 2, wherein the screw 1 is arranged in the barrel 2; the barrel 2 is provided with a plurality of first temperature control zones 3 and at least one second temperature control zone 4, and the second temperature control zone 4 is the temperature control zone closest to the discharge end of the barrel 2; a heater 7 and a first temperature sensor (not shown in the figure) are provided in the first temperature control zone 3 and the second temperature control zone 4; the heater 7 and the first temperature sensor are both connected to a temperature control module (not shown in the figure); the second temperature control zone 4 is provided with a first fan 5; the first fan 5 includes: a variable frequency motor, and the variable frequency motor is connected to the temperature control module.

[0023] The present application utilizes the first temperature control zone 3 and the second temperature control zone 4 to control the temperature of the screw 1 extruder, and in particular, a first fan 5 with a variable frequency motor is arranged in the second temperature control zone 4 arranged at the discharge end of the barrel 2. The variable frequency motor of the first fan 5 can change the frequency and speed in real time according to the temperature of the second temperature control zone 4, so that the temperature of the second temperature control zone 4 is adjusted in real time, thereby improving the unstable temperature at the discharge end of the barrel 2.

[0024] In this embodiment, the screw 1 is arranged in the barrel 2, and the barrel 2 is sequentially provided with five first temperature control zones 3 and one second temperature control zone 4 from the feed end to the discharge end, and each temperature control zone is provided with a heater 7 and a first temperature sensor; the heater 7 and the first temperature sensor are respectively electrically connected to the temperature control module, so that the temperature control module can obtain the real-time temperature of each temperature control zone and control the start or shut down of the heater 7; the second temperature control zone 4 is also provided with a first fan 5 with a variable frequency motor, and the variable frequency motor is also electrically connected to the temperature control module. The temperature control module controls the frequency and speed of the variable frequency motor according to the real-time temperature of the second temperature control zone 4 fed back by the first temperature sensor, thereby controlling the operation of the first fan 5, adjusting the temperature of the second temperature control zone 4 in real time, reducing the temperature fluctuation of the second temperature control zone 4, and ensuring the performance and quality of the extruded product.

[0025] Of course, those skilled in the art can adaptively increase or decrease the number of the first temperature control zones 3 and the second temperature control zones 4 .

[0026] Optionally, the first temperature control zone 3 and the second temperature control zone 4 have an equal coverage area, thereby facilitating temperature control of the entire barrel 2 .

[0027] Optionally, a second fan 6 is further provided in the first temperature control zone 3 to improve the temperature control efficiency in the first temperature control zone 3 .

[0028] In this embodiment, among the five first temperature control zones 3, second fans 6 are provided in two first temperature control zones 3 close to the second temperature control zone 4, while second fans 6 are not provided in the first three first temperature control zones 3, so as to meet the processing requirements of polyester industrial yarns and achieve a balance between temperature control efficiency and energy saving.

[0029] Specifically, the second fan 6 includes: an industrial frequency motor, and the industrial frequency motor is electrically connected to the temperature control module. The second fan 6 is powered by the industrial frequency motor, and the industrial frequency motor is connected to the temperature control module. After the temperature control module obtains the real-time temperature according to the first temperature sensor in the first temperature control zone 3, it controls the opening or closing of the industrial frequency motor to adjust whether the second fan 6 is working.

[0030] Specifically, the temperature control module includes but is not limited to a PLC (Programmable Logic Controller) module, and the PLC module includes but is not limited to a single-chip microcomputer.

[0031] Optionally, the heater 7 is integrally arranged on the barrel 2 so that the barrel 2 is heated evenly.

[0032] Optionally, the heater 7 includes but is not limited to a heating wire.

[0033] Specifically, a heat preservation box 8 is further provided outside the first temperature control zone 3 and the second temperature control zone 4 to ensure that the temperatures of the first temperature control zone 3 and the second temperature control zone 4 are not disturbed by the outside world.

[0034] Optionally, a second temperature sensor 9 is provided at the discharge end of the barrel 2 , and the second temperature sensor 9 is electrically connected to the temperature control module to feed back the material temperature at the discharge end of the barrel 2 to the temperature control module.

[0035] Optionally, the first temperature sensor and / or the second temperature sensor 9 include but are not limited to platinum resistance.

[0036] In this embodiment, the first temperature sensor and the second temperature sensor 9 both use PT100 platinum resistance, which can provide a high-precision temperature measurement effect.

[0037] The present application also provides a screw extruder, including the temperature control structure of the screw extruder.

[0038] Optionally, the temperature control structure of the screw extruder is described above and will not be repeated here.

[0039] Optionally, the barrel 2 of the screw extruder is placed on a frame, and the frame includes a bottom plate 12 and a bracket 13 , wherein the bracket 13 is connected to the bottom plate 12 , and the bracket 13 is connected to the barrel 2 .

[0040] Optionally, the screw extruder further includes: a cooling water jacket 11 , and the cooling water jacket 11 is arranged at the feed end of the barrel 2 .

[0041] Optionally, the discharge end of the barrel 2 is connected to a discharge conversion port via a discharge flange 14 to adjust the discharge position of the discharge port 15 .

[0042] Optionally, the screw extruder further includes: a gear box 10 , wherein the gear box 10 is connected to the screw 1 .

[0043] The present application utilizes the first temperature control zone 3 and the second temperature control zone 4 to control the temperature of the screw 1 extruder, and in particular, a first fan 5 with a variable frequency motor is arranged in the second temperature control zone 4 arranged at the discharge end of the barrel 2. The variable frequency motor of the first fan 5 can change the frequency and speed in real time according to the temperature of the second temperature control zone 4, so that the temperature of the second temperature control zone 4 is adjusted in real time, thereby improving the unstable temperature at the discharge end of the barrel 2.

[0044] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0046] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0047] The above embodiments are only used to illustrate the technical solution of the present application but not to limit it. The present application is described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solution of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application, and should be included in the scope of the claims of the present application.

Claims

1. A temperature control structure for a screw extruder, characterized in that: include: A screw and a barrel, wherein the screw is arranged in the barrel; the barrel is provided with a plurality of first temperature control zones and at least one second temperature control zone, wherein the second temperature control zone is arranged near the discharge end of the barrel; A heater and a first temperature sensor are provided in both the first temperature control zone and the second temperature control zone; The heater and the first temperature sensor are both connected to the temperature control module; The second temperature control zone is provided with a first fan; the first fan includes: a variable frequency motor, and the variable frequency motor is connected to the temperature control module.

2. The temperature control structure of the screw extruder according to claim 1, characterized in that: A second fan is also provided in the first temperature control zone.

3. The temperature control structure of the screw extruder according to claim 2, characterized in that: The second fan includes: an industrial frequency motor, and the industrial frequency motor is electrically connected to the temperature control module.

4. The temperature control structure of the screw extruder according to any one of claims 1 to 3, characterized in that: The heater is integrally arranged on the barrel.

5. The temperature control structure of the screw extruder according to any one of claims 1 to 3, characterized in that: The heater comprises: a heating wire.

6. The temperature control structure of the screw extruder according to any one of claims 1 to 3, characterized in that: The temperature control module includes: a PLC module.

7. The temperature control structure of the screw extruder according to any one of claims 1 to 3, characterized in that: Insulation boxes are also provided outside the first temperature control zone and the second temperature control zone.

8. The temperature control structure of a screw extruder according to any one of claims 1 to 3, characterized in that: A second temperature sensor is provided at the discharge end of the barrel, and the second temperature sensor is connected to the temperature control module.

9. The temperature control structure of the screw extruder according to claim 8, characterized in that: The first temperature sensor and / or the second temperature sensor includes: a platinum resistor.

10. A screw extruder, characterized in that: The invention comprises the temperature control structure of the screw extruder according to any one of claims 1 to 9.

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