Example 1
The embodiment of the invention provides a fabric drying device which mainly comprises a roller way, a drying tray, a box body part, an online detection system and a PLC control system.
The roller way transversely penetrates through the interior of the box body part, is positioned above the bottom of the box body part and is parallel to the bottom of the box body part; the drying tray is placed on the roller way, and passes through the box part along with the rolling of roller way, and online detection system installs inside the box part, and the inside relevant data of real-time detection box part to give PLC control system with relevant data feedback, PLC control system is located the outside of box part, can manual operation or establish to automatic operation.
The respective components of the drying apparatus are described in detail below:
(I) roller way
According to the physical structure characteristics of the roller way, the roller way can bear heavy yarns to wait for drying the fabric.
The roller way comprises an external roller way and an internal roller way;
the external roller ways are positioned at the outer sides of the two ends of the box body part and are used for driving the drying tray to enter and exit the box body part at a higher speed; the outer sides of the two ends of the box body part are respectively provided with an external roller way;
the inner roller way is positioned below the inner part of the box body part, is adjacent to the outer roller way, is separated from the outer roller way by an outer leakage-proof door and is used for driving the drying tray to pass through the box body part.
(II) case body component
Referring to fig. 1, the case member mainly includes:
buffer boxes 13 and 17, N heating boxes 14, and (N +1) transition boxes 16.
Wherein, the buffer boxes 13 and 17 are respectively positioned at two ends of the box body part;
the number of heating tanks 14 and transition tanks 16 may be determined as appropriate.
Specifically, the method comprises the following steps:
(1) buffer box body
The microwave oven is mainly used for preventing microwave leakage and specifically comprises the following components:
a) an outer layer leakage-proof door 12-1 which is arranged at the outer side of the buffer box body 13, separates the inner roller way from the outer roller way 11-1, and automatically opens and closes according to a proximity switch, so that the drying tray can automatically enter the buffer box body 13; mainly used for preventing the leakage of the microwave.
Or,
the outer-layer leakage-proof door 12-2 is arranged on the outer side of the buffer box body 17, separates the inner roller way from the outer roller way 11-2, and is automatically opened and closed according to the proximity switch, so that the drying tray can automatically leave the buffer box body 17; the method is mainly used for preventing and controlling microwave leakage.
b) The dehumidifying device 10 is installed on the top of the buffer box 13 (or 17) and is mainly used for discharging steam rapidly and ensuring smooth drying.
(2) Transition box 16
The method is divided into two types: one is a leakage-proof transition box body positioned between the buffer box body 13 (or 17) and the heating box body 14; one is a cooling transition box located between the heating boxes 14;
referring to fig. 2, the leak-proof transition box is mainly used for preventing microwave leakage, and specifically includes:
the inner-layer leakage-proof door 15-1 positioned in the middle of the leakage-proof transition box body is automatically opened and closed according to the proximity switch, so that the drying tray can automatically enter the heating box body 14, and the leakage of microwaves is effectively prevented; the inner layer leakage preventing door 15-1 and the outer layer leakage preventing door 12-1 cannot be opened at the same time.
Or,
the inner-layer leakage-proof door 15-2) positioned in the middle of the leakage-proof transition box body is automatically opened and closed according to the proximity switch, so that the drying tray can automatically enter the buffer box body 17, and the leakage of microwaves is effectively prevented; the inner layer leakage preventing door 15-2 and the outer layer leakage preventing door 12-2 cannot be opened at the same time.
Here, it is to be emphasized that: the inner layer leakage-proof door can be directly arranged between the buffer box body and the heating box body, and the leakage-proof transition box body can not be included.
The cooling transition box body is positioned between the two heating box bodies 14, plays a role in temporarily cooling the fabric, and avoids the phenomena of overbaking of the fabric and the like caused by long-time baking.
The shaded part in FIG. 2 is a fast roller way, which comprises outer roller ways 11-1 and 11-2 and inner roller ways 1-1 and 1-3; the inner roller way 1-2 is a slow roller way. The speed of the fast roller way is consistent, the speed of the slow roller way is consistent, and the specific speed is determined by the actually dried fabric.
(3) Heating cabinet 14
The drying device is mainly used for drying fabrics, and referring to fig. 3, the drying device specifically comprises:
a) a magnetron 6 mounted on the inner wall 3 of the heating box body and mainly used for generating microwave;
b) the waveguide tube 7 is connected with the magnetron 6 and is mainly used for transmitting the generated microwaves into the heating box body;
c) the microwave stirrer 8 is arranged on the upper part of the inner wall 3 of the heating box body and is mainly used for enabling a microwave electromagnetic field to be more uniform in the heating box body and playing a better effect on drying fabrics;
d) the dehumidifying device 10 is arranged at the top of the heating box body 14 and is mainly used for rapidly discharging steam and ensuring the smooth drying;
when a plurality of heating boxes are arranged, the PLC control system can be used for setting the maximum drying power of the first heating box through which the drying tray 2 passes; the drying power of the second heating box body is lower than that of the first heating box body, and by analogy, the drying power is reduced one by one according to the passing sequence of the drying trays 2.
For example, the drying power of each heating box is decreased according to a certain proportion, and the proportion can be determined according to the specific fabric to be dried;
or, the drying power of each heating box body is decreased progressively according to a certain calculation formula, and the calculation formula can be obtained by summarizing and inducing according to years of experience by a person skilled in the art; and so on.
The parameters of the heating box such as drying power, drying time and the like are determined by the specific fabric to be dried.
(III) on-line detection system
Still referring to fig. 3, it mainly includes:
the temperature sensor 5 is arranged on the inner wall 3 of the heating box body and is mainly used for detecting the temperature in the heating box body in real time and sending the detected temperature to the PLC control system;
the humidity sensor 9 is arranged at an inlet of the dehumidifying device 10, and is mainly used for detecting the humidity in the box body in real time and sending the detected humidity to the PLC control system;
the proximity switch is arranged on the leakage-proof door (the outer layer and the inner layer) and is mainly used for detecting the state of the leakage-proof door in real time;
and the rotating speed sensor is arranged on the axial outer side of the internal roller way 1-2 and is mainly used for detecting the rotating speed of the internal roller way 1-2 in real time and sending the detected rotating speed to the PLC control system.
(IV) PLC control system
Referring to fig. 4, it mainly includes:
the PLC control module 4 is arranged at the outer side of the box body part, is convenient for manual operation, can also be set to be automatic operation, receives real-time data sent by each sensor in the online detection system, and adjusts parameters such as drying time, drying power, roller way rotating speed, air intake and the like according to the received real-time data;
for example, when the temperature received by the PLC control system is higher than the desired temperature value, the drying time may be shortened, or the drying power may be reduced, or the intake air may be increased;
when the humidity received by the PLC control system is higher than the expected humidity value, the drying time can be increased, the drying power can be increased, or the air inlet quantity can be reduced.
The specific implementation process can be realized by programming the PLC.
The working process of the whole fabric drying device is described as follows:
step 1: the external roller way 11-1 quickly transmits the drying tray 2 for placing the fabrics to be dried to the outer-layer leakage-proof door 12-1, the proximity switch senses the proximity of the drying tray 2, the door 12-1 is opened, the drying tray 2 enters the internal roller way 1-1, the internal roller way 1-1 is a quick roller way, and the drying tray 2 quickly passes through the buffer box body 13;
step 2: when the proximity switch senses that the drying tray 2 leaves, the door 12-1 is closed rapidly, the proximity switch on the inner-layer leakage-proof door 15-1 senses that the drying tray 2 approaches, the door 15-1 is opened, and the drying tray 2 enters the heating box body 14;
and step 3: the proximity switch on the door 15-1 senses the departure of the drying tray 2 and is rapidly closed, under the control of the PLC control module 4, the magnetron 6 in the heating box body 14 starts to work, meanwhile, microwaves are conveyed to the heating box body 14 through the waveguide tube 7 to start microwave drying on fabrics, the stirrer 8 enables a microwave electromagnetic field to be more uniform in the box body, and the moisture exhausting device 10 exhausts a large amount of steam generated in the drying process out of the box body part. The temperature sensor 5 and the humidity sensor 9 dynamically detect the temperature and the humidity in the heating box body 14; the rotation speed sensor dynamically detects the rotation speed of the internal roller way 1-2 and sends detected real-time data to the PLC control system, and the PLC control system adjusts the drying time, the drying power, the roller way rotation speed and the air intake according to the real-time data to strive to achieve the best drying effect;
cooling transition boxes are arranged among the heating boxes 14, and the speed of the drying tray 2 entering the cooling transition boxes is unchanged, so that the temporary cooling effect on the fabric is achieved;
the drying power of each heating cabinet 14 is decreased one by one in the order of passing the drying trays 2.
And 4, step 4: after the drying process is finished, the inner layer anti-leakage door 15-2 is automatically opened, and the drying tray 2 enters the buffer box body 17 through the inner layer anti-leakage door 15-2;
and 5: the door 15-2 is closed rapidly, the outer layer leakage-proof door 12-2 is opened rapidly, the drying tray 2 passes through the outer layer leakage-proof door 12-2 rapidly, and is transferred to the outer roller way 11-2 from the inner roller way 1-3, and the fabric is taken out of the drying device.
The fabric drying device provided by the embodiment of the invention is mainly applied to drying of fabrics such as yarns in dyeing and finishing industries, and the like, because of the high frequency of a microwave electromagnetic field, polar molecules do high-frequency vibration in materials, and a large amount of heat is generated in unit time, the fabric can be dried efficiently, uniformly, energy-saving, environment-friendly and controllably by adopting a microwave drying technology, the automation degree is high, the fabric can be dried step by step and continuously by a heating box body with gradually reduced power, the dried fabric is dried uniformly and has excellent quality, and the device is suitable for an unmanned automatic yarn dyeing and finishing production line.
Example 2
The embodiment of the invention provides a fabric drying method using the fabric drying device in the embodiment 1, which comprises the following steps:
the fabric is sequentially passed through a plurality of heating boxes for drying by microwave, and the drying power of the heating boxes is gradually reduced according to the passing sequence of the fabric.
Further, the method further comprises:
the fabric passes through the cooling transition box body in the process of entering from one heating box body to the other heating box body.
Further, the method further comprises:
detecting relevant data, wherein the relevant data comprises: temperature, humidity and roller bed velocity;
and according to the related data, adjusting the drying time, the drying power, the speed and the air intake of the roller way.
Further, the method further comprises:
the microwave stirring technology is applied to ensure that the microwave drying is more uniform.
The fabric drying method provided by the embodiment of the invention is mainly applied to drying of fabrics such as yarns in dyeing and finishing industries, and the like, because of the high frequency of a microwave electromagnetic field, polar molecules do high-frequency vibration in materials, and a large amount of heat is generated in unit time, the fabric can be dried efficiently, uniformly, energy-saving, environment-friendly and controllably by adopting a microwave drying technology, the automation degree is high, the fabric can be dried step by step and continuously by a heating box body with gradually reduced power, the dried fabric is dried uniformly and has excellent quality, and the method is suitable for an unmanned automatic yarn dyeing and finishing production line.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.