Continuous infrared crystallization dryer and real-time intelligent temperature control system thereof

Abstract

The utility model relates to a continuous infrared crystallization drying machine and real-time intelligent temperature control system thereof, the temperature control system comprises a controller, a roller, a lamp tube frame and a cooling fan, the lamp tube frame is arranged in the roller, a heating tube and a first temperature sensor are arranged in the lamp tube frame, and the cooling fan is arranged in the roller. The controller is in signal connection with the heating pipe, the first temperature sensor and the cooling fan. A cooling pipeline is arranged in the lamp tube frame, the first temperature sensor is arranged in the cooling pipeline, and the cooling pipeline is connected with the cooling fan. According to the real-time intelligent temperature control system, the controller, the lamp tube frame, the cooling fan, the heating tube, the first temperature sensor and the second temperature sensor are arranged, the first temperature sensor is aligned with a heated material, the temperature of the material is detected in real time, and the controller carries out intelligent automatic temperature control through a PID fuzzy intelligent algorithm and section heating; therefore, accurate temperature control of the heated object is realized.

Description

Technical Field

[0001] The utility model relates to the field of infrared drying machines, in particular to a continuous infrared crystallization drying machine and a real-time intelligent temperature control system thereof. Background Art

[0002] The current infrared dryer is generally composed of a base frame, a drum, a heating irradiation box, a feeding assembly, and a sliding frame seat equipped with a lamp tube seat. The feeding assembly feeds the material into the drum. The drum rotates and the material can be evenly turned. At the same time, the infrared radiation tube installed on the irradiation box radiates and heats the material to make the material crystallize or dry. The inclined baffle or spiral blade set inside the drum is transported to the discharge end of the drum while the drum rotates, completing the infrared continuous crystallization drying or drying process. However, the current technology still has the following shortcomings: 1. Inaccurate temperature control, and imperceptible over-temperature damage occurs: When the target material enters the drum and is heated, it is easy to overheat and damage the material, especially some fruit and vegetable seeds, which are baked and damaged in different proportions. Due to the high efficiency of infrared radiation heating and concentrated energy, some plastics also appear in the crystallization drying process. Melting occurs during the drying process. Existing technologies generally control the heating state by controlling the power of the heating source or measuring the temperature of the air inside the drum. In fact, different targets have different wavelengths for energy transition, and the infrared absorption efficiency of different wavelengths is different. The temperature of the air or the power of the light source cannot infer the actual temperature of the heated material, especially different materials have different states of energy absorption and heating, and the temperature control is difficult and the error is very large. The infrared light source after installation has a relatively fixed wavelength distribution, so the output power control of the radiation infrared tube cannot achieve accurate temperature control of different materials. Similarly, infrared transfers energy through radiation, and has no obvious effect on heating the air. After the material is heated, it heats the air, and then the temperature of the target object is measured by measuring the air temperature inside the drum, which has a huge error. 2. The cleaning remains unchanged when the target material for heat treatment is replaced. Even if the lamp holder is moved away with the sliding frame holder, some channels of the feeding system are still in the closed drum. The cleaning operation is narrow and it is difficult to complete convenient and thorough cleaning, which can easily contaminate the next batch of heat treatment targets; 3. The operation is complicated and it is difficult to achieve high-quality fully automatic operation. In view of the fact that the temperature and heating status cannot be accurately quantified, the traditional infrared crystallization dryer needs to set the process and actually check the heating status of the material when it is used. Only after measuring the actual material temperature and finding it normal can it be used for continuous production. For ordinary operators, it will cause different proportions of material damage and cannot be truly fully automatic.4. Easy to get out of control of thermal energy: Traditional technology also attempts to use infrared non-contact temperature measurement, but because the traditional technology places the infrared thermometer in the middle of each lamp tube of the heating lamp cover and measures the temperature of the target material, it is actually difficult to achieve truly accurate temperature measurement. For example, the infrared energy waves emitted by the infrared lamp tube show irregular reflections in the metal barrel, and the surface of the heated material also reflects a large number of infrared energy waves. The infrared temperature measurement head is in the middle position, resulting in a large number of various reflected waves directly radiated from the lamp tube, which causes serious interference and cannot achieve accurate temperature measurement. Secondly, due to the infrared thermometer There are various optical and electrical components in the drum, which cannot work continuously at high temperatures. Usually, the temperature of the lamp tube is as high as 400 to 900℃, and the temperature around it is very high. If the heating lamp tube is turned off to measure the temperature, although the temperature can be measured intermittently, it cannot be measured in real time continuously, and it cannot support PID calculation for accurate automatic temperature control. This traditional infrared temperature measurement is inaccurate and difficult to apply in practice, and wastes energy: when the drum is first fed or when the material is finished, there is no material in some positions, resulting in all infrared energy waves being directly radiated ineffectively on the surface of the metal drum. Heating and radiation reflection will cause overheating of the drum and chaotic heat transfer, and even affect the temperature measurement system. 5. Residual contamination is prone to occur. Since the traditional feeding system is fixed on the frame and some channels are in the semi-enclosed drum, when the target material is replaced, the cleaning space is small, cleaning is inconvenient, and operation is difficult. The material in the feeding channel is easy to contaminate the next batch of target materials. Utility Model Content

[0003] The utility model aims to provide a continuous infrared crystallization dryer and a real-time intelligent temperature control system thereof to solve one of the prior art problems mentioned in the background technology.

[0004] In order to achieve the above object, the basic scheme of the utility model is as follows:

[0005] A real-time intelligent temperature control system comprises a controller, a drum, a lamp tube rack and a cooling fan, wherein the lamp tube rack is arranged in the drum, and a heating tube, a first temperature sensor and a second temperature sensor are arranged in the lamp tube rack, and the controller is respectively connected to the heating tube, the first temperature sensor, the second temperature sensor and the cooling fan signal; the second temperature sensor is used to detect the temperature in the heating tube installation channel; a cooling pipeline is arranged in the lamp tube rack, the first temperature sensor is arranged in the cooling pipeline, and the cooling pipeline is connected to the cooling fan.

[0006] Compared with the prior art, the real-time intelligent temperature control system of this application has the following beneficial effects:

[0007] The real-time intelligent temperature control system of the present application is equipped with a controller, a lamp tube rack, a cooling fan, a heating tube, a first temperature sensor and a second temperature sensor. The first temperature sensor is aimed at the heated material and detects the temperature of the material in real time. The controller uses a PID fuzzy intelligent algorithm and section heating to perform intelligent automatic temperature control, thereby achieving precise temperature control of the heated object.

[0008] Preferably, an air cooling pipe is provided in the cooling pipeline, the first temperature sensor is provided in the air cooling pipe, and the air cooling pipe is connected to the cooling fan; a second temperature sensor is provided in the cooling pipeline, and the second temperature sensor is used to detect the temperature in the cooling pipeline.

[0009] Beneficial effect: The second temperature sensor allows the electrical components to operate below the allowable temperature range. When a cooling system failure causes over-temperature in the cooling pipeline, the controller will cut off the heating pipe and issue a corresponding warning, thereby reliably protecting the sensor.

[0010] Preferably, a heat insulation cover is arranged between the heating pipe and the cooling pipeline, and the air cooling pipe is arranged on the heat insulation cover.

[0011] Beneficial effect: The setting of the heat insulation cover effectively prevents the heat generated by the heating pipe from being transferred to the cooling pipeline.

[0012] The utility model also provides a continuous infrared crystallization dryer, comprising a fixed frame, a sliding frame, a feeding bin, a discharging bin and the above-mentioned real-time intelligent temperature control system, wherein the drum is rotatably arranged on the fixed frame, the feeding bin is arranged on the sliding frame, the discharging bin and the feeding bin are respectively arranged on both sides of the drum, and the discharging bin and the feeding bin are respectively connected to the drum.

[0013] Beneficial effect: The material enters the drum through the feed bin and is discharged from the discharge bin after being dried in the drum.

[0014] Preferably, the cooling fan is arranged below the sliding frame, the sliding frame is provided with a filter chamber, the filter chamber is arranged between the cooling fan and the cooling pipeline, and an air filter element is arranged in the filter chamber.

[0015] Preferably, a rotating motor, a transmission assembly and a rotating wheel are arranged on the fixed frame, the roller is arranged on the rotating wheel, and the rotating motor drives the roller to rotate through the transmission assembly.

[0016] Preferably, a speed-adjustable feeding device is arranged between the feed bin and the roller, and the speed-adjustable feeding device includes a feed pipe, a feed seat, a feed channel, a screw, a feeding motor and a screw seat. The feed pipe connects the feed bin and the feed channel, the feed channel is formed in the feed seat, the screw is connected to the feeding motor, the screw passes through the screw seat, a bearing is arranged in the screw seat, and the bearing cooperates with the screw.

[0017] Preferably, the sliding frame is provided with rollers, and the fixed frame is provided with slide rails, and the rollers are slidably matched with the slide rails.

[0018] Beneficial effect: The above arrangement enables the device to conveniently open the sliding frame to the maximum position, the entire feeding mechanism is fully open, the feeding channel is fully developed, and it is easy to clean, ensuring that when the material is replaced, the mixing contamination of the next batch of materials is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a continuous infrared crystallization dryer provided in an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of the internal structure of a continuous infrared crystallization dryer provided in an embodiment of the utility model;

[0021] Figure 3 An exploded schematic diagram of a continuous infrared crystallization dryer provided by an embodiment of the utility model;

[0022] Figure 4 A cross-sectional schematic diagram of a lamp tube holder provided by an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of a fixed frame structure provided in an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the structure of a split feeding bin and a speed-adjustable feeding device provided in an embodiment of the utility model;

[0025] Figure 7 An exploded schematic diagram of a speed-adjustable feeding device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following is further described in detail through specific implementation methods:

[0027] The figure marks in the drawings of the specification include: drum 1, lamp tube rack 2, cooling fan 3, heating tube 4, first temperature sensor 5, cooling pipeline 6, air cooling pipe 7, heat insulation cover 8, fixed frame 9, sliding frame 10, feed bin 11, discharge bin 12, filter chamber 13, air filter element 14, rotating motor 15, transmission assembly 16, wheel 17, speed regulating feeding device 18, discharge pipe 19, discharge seat 20, feed channel 21, screw 22, feeding motor 23, screw seat 24, bearing 25, roller 26, slide rail 27.

[0028] As attached Figure 1-7 As shown, this embodiment demonstrates a continuous infrared crystallization dryer and a real-time intelligent temperature control system thereof.

[0029] Among them, the real-time intelligent temperature control system includes a controller, a drum 1, a lamp tube rack 2 and a cooling fan 3. The lamp tube rack 2 is arranged in the drum 1, and a heating tube 4 and a first temperature sensor 5 are arranged in the lamp tube rack 2. The controller is respectively connected with the heating tube 4, the first temperature sensor 5 and the cooling fan 3 by signal; a cooling pipeline 6 is arranged in the lamp tube rack 2, and the first temperature sensor 5 is arranged in the cooling pipeline 6, and the cooling pipeline 6 is connected to the cooling fan 3.

[0030] In this embodiment, a first temperature sensor 5 is provided in the lamp holder 2, and the first temperature sensor 5 is placed in a cooling pipe 6 with air cooling. The first temperature sensor 5 is aimed at the heated material at a certain angle, detects the temperature of the material in real time, and feeds back the detected temperature to the controller. The controller performs intelligent automatic temperature control on the heating of multiple independent sections in the drum 1 through the PID fuzzy intelligent algorithm, thereby realizing precise temperature control of the heated object.

[0031] The cooling pipe 6 is provided with an air cooling pipe 7, the first temperature sensor 5 is provided in the air cooling pipe 7, and the air cooling pipe 7 is connected to the cooling fan 3; the cooling pipe 6 is provided with a second temperature sensor, and the second temperature sensor is used to detect the temperature in the cooling pipe 6. The second temperature sensor is also connected to the controller. When the cooling system fails and causes the cooling pipe 6 to overheat, the controller will cut off the heating of the heating tube 4 in the lamp tube and issue a corresponding warning to reliably protect the sensor.

[0032] A heat insulation cover 8 is arranged between the heating tube 4 and the cooling pipeline 6, and the air cooling pipe 7 is arranged on the heat insulation cover 8. The heat insulation cover 8 can effectively prevent the heat generated by the heating tube 4 from being transferred to the cooling pipeline 6.

[0033] The continuous infrared crystallization dryer of this embodiment also includes a fixed frame 9, a sliding frame 10, a feed bin 11, a discharge bin 12 and the above-mentioned real-time intelligent temperature control system. The drum 1 is rotatably arranged on the fixed frame 9, the feed bin 11 is arranged on the sliding frame 10, the discharge bin 12 and the feed bin 11 are respectively arranged on both sides of the drum 1, and the discharge bin 12 and the feed bin 11 are respectively connected to the drum 1.

[0034] Among them, a rotating motor 15, a transmission assembly 16 and a rotating wheel 17 are arranged on the fixed frame 9, and the drum 1 is arranged on the rotating wheel 17. The rotating motor 15 drives the drum 1 to rotate through the transmission assembly 16. Specifically, the transmission assembly 16 includes a synchronous belt, a gear and a transmission shaft. Rollers 26 are respectively arranged at both ends of the transmission shaft and the fixed frame 9. The rotating motor 15 drives the gear to rotate through the synchronous belt, and the gear drives the transmission shaft to rotate, and the transmission shaft further drives the rollers 26 at both ends to rotate. The rotation of the rollers 26 further drives the drum 1 to rotate.

[0035] Among them, a speed-regulating feeding device 18 is arranged between the feeding bin 11 and the roller 1, and the speed-regulating feeding device 18 includes a feeding pipe 19, a feeding seat 20, a feeding channel 21, a screw 22, a feeding motor 23 and a screw seat 24. The feeding pipe 19 connects the feeding bin 11 and the feeding channel 21, the feeding channel 21 is formed in the feeding seat 20, the screw 22 is connected to the feeding motor 23, the screw 22 is arranged through the screw seat 24, a bearing 25 is arranged in the screw seat 24, and the bearing 25 cooperates with the screw 22.

[0036] The rotating motor 15 and the feeding motor 23 are both connected to a controller. The controller in this embodiment is a PLC controller.

[0037] The material enters the feeding pipe 19 from the feeding bin 11 and enters the feeding channel 21. The feeding motor 23 drives the screw 22 to rotate, and the screw 22 rotates to push the material from the feeding channel 21 into the drum 1.

[0038] The material enters from the feed bin 11 and is fed into the feed end of the drum 1 at a certain speed by the speed-adjusting feeding device 18 installed as required by the process. The drum 1 rotates at a certain speed driven by the rotating motor 15, and the rotation speed is controlled by the PLC. The heating tube 4 in the lamp rack 2 radiates heat to the material, and the first temperature sensor 5 detects the temperature of the material in real time. The first temperature sensor 5 transmits the detected temperature signal to the PLC for calculation, controls the power of the heating in the lamp rack 2, and performs closed-loop temperature control. The material is continuously turned over by the rotation of the drum 1, and is evenly heated while moving along the drum 1 toward the discharge port.

[0039] In some embodiments, the temperature of different positions in the drum 1 can be controlled in different zones, so as to adjust the heat treatment process more finely. In this case, the drum 1 is set in three sections to gradually increase the temperature of the material.

[0040] The cooling fan 3 is arranged below the sliding frame 10 . The sliding frame 10 is provided with a filter chamber 13 . The filter chamber 13 is arranged between the cooling fan 3 and the cooling pipeline 6 . An air filter element 14 is arranged in the filter chamber 13 .

[0041] The air is filtered through the air filter element 14 of the filter chamber 13 and then sent to the lamp rack 2 through the fan to cool the air cooling pipe 7 channel in the cooling pipeline 6 and the channel in the lamp rack 2, and finally enters the drum 1 to replace the humid air while cooling the shell of the drum 1. All actions and process parameters are controlled by PLC to keep the entire machine running fully automatically.

[0042] The sliding frame 10 is provided with a roller 26 , and the fixed frame 9 is provided with a slide rail 27 , and the roller 26 and the slide rail 27 are slidably matched.

[0043] The feeding mechanism is fixedly mounted on the sliding frame 10. The bottom of the sliding frame 10 is provided with a roller 26, which cooperates with the slide rail 27 provided between the fixed frame 9, so that the sliding frame 10 can be conveniently opened to the maximum position. After opening, the entire feeding mechanism is fully open, and the feeding channel is fully open, which is convenient for cleaning, ensuring that the mixing and contamination of the next batch of materials is reduced when the materials are replaced. At the same time, both ends of the feed bin 11 and the discharge bin 12 of the drum 1 can obtain the maximum opening, which is conducive to cleaning and maintenance.

[0044] Wherein, the first temperature sensor 5 is an infrared temperature sensor.

[0045] The infrared temperature sensor can use the different infrared radiation characteristics of different materials to automatically identify whether there is material in the drum 1. When the material just enters and leaves the drum 1, the multi-stage heating is automatically changed in temperature and opened and closed in sections, thereby realizing lossless fully automatic operation. In the heating and non-heating states, the infrared temperature sensor can distinguish the test target, the stainless steel drum wall or the target object through the different infrared characteristics of the stainless steel metal barrel and the material, and realize automatic closing when there is no material, avoiding dry burning of the drum 1, and combining with the PLC controller to achieve energy-saving and intelligent fully automatic working state.

[0046] When processing different materials, by testing the wave absorption characteristics of different materials, the PID temperature measurement and temperature control algorithms of the materials can be further optimized. By directly selecting the material type (PET, ABS, PC, melon seeds, etc.) on the PLC interface, the user's ease of operation can be further optimized, thereby realizing one-key start operation. The feeding system is installed on a sliding frame 10 that can be slid open, so that the clean feeding channel can be quickly cleaned in a completely open space, reducing the contamination of the channel residues to the next batch of materials.

[0047] Among them, the infrared temperature sensor can use a common conventional temperature-resistant sensor or a high-temperature-resistant sensor. Because this embodiment can keep the head glass window of the sensor in a clean state and prevent the electrical components from being exposed to a high temperature environment, and in addition to using a nylon tube as the air cooling tube 7, a metal material cavity shell and pipeline can be used, which makes it easier to enhance the anti-interference of the weak electric signal of the temperature detection and make the work more reliable.

[0048] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Real-time intelligent temperature control system, characterized by: The invention comprises a controller, a drum (1), a lamp tube rack (2) and a cooling fan (3); the lamp tube rack (2) is arranged in the drum (1); a heating tube (4) and a first temperature sensor (5) are arranged in the lamp tube rack (2); the controller is respectively connected to the heating tube (4), the first temperature sensor (5) and the cooling fan (3) by signals; a cooling pipeline (6) is arranged in the lamp tube rack (2); the first temperature sensor (5) is arranged in the cooling pipeline (6); and the cooling pipeline (6) is connected to the cooling fan (3).

2. The real-time intelligent temperature control system according to claim 1, characterized in that: An air cooling pipe (7) is arranged in the cooling pipeline (6), the first temperature sensor (5) is arranged in the air cooling pipe (7), and the air cooling pipe (7) is connected to the cooling fan (3); a second temperature sensor is arranged in the cooling pipeline (6), and the second temperature sensor is used to detect the temperature in the cooling pipeline (6).

3. The real-time intelligent temperature control system according to claim 2, characterized in that: A heat insulation cover (8) is arranged between the heating pipe (4) and the cooling pipeline (6), and the air cooling pipe (7) is arranged on the heat insulation cover (8).

4. A continuous infrared crystallization dryer, characterized in that: The invention comprises a fixed frame (9), a sliding frame (10), a feeding bin (11), a discharging bin (12) and a real-time intelligent temperature control system according to any one of claims 1 to 3, wherein the drum (1) is rotatably arranged on the fixed frame (9), the feeding bin (11) is arranged on the sliding frame (10), the discharging bin (12) and the feeding bin (11) are respectively arranged on both sides of the drum (1), and the discharging bin (12) and the feeding bin (11) are respectively connected to the drum (1).

5. A continuous infrared crystallization dryer according to claim 4, characterized in that: The cooling fan (3) is arranged below the sliding frame (10), the sliding frame (10) is provided with a filter chamber (13), the filter chamber (13) is arranged between the cooling fan (3) and the cooling pipeline (6), and an air filter element (14) is arranged in the filter chamber (13).

6. A continuous infrared crystallization dryer according to claim 4, characterized in that: A rotating motor (15), a transmission assembly (16) and a rotating wheel (17) are arranged on the fixed frame (9); the roller (1) is arranged on the rotating wheel (17); and the rotating motor (15) drives the roller (1) to rotate through the transmission assembly (16).

7. A continuous infrared crystallization dryer according to claim 5, characterized in that: A speed-adjustable feeding device (18) is provided between the feed bin (11) and the roller (1), and the speed-adjustable feeding device (18) comprises a feed pipe (19), a feed seat (20), a feed channel (21), a screw (22), a feed motor (23) and a screw seat (24); the feed pipe (19) connects the feed bin (11) and the feed channel (21); the feed channel (21) is formed in the feed seat (20); the screw (22) is connected to the feed motor (23); the screw (22) passes through the screw seat (24); a bearing (25) is provided in the screw seat (24); and the bearing (25) cooperates with the screw (22).

8. A continuous infrared crystallization dryer according to claim 4, characterized in that: The sliding frame (10) is provided with a roller (26), and the fixed frame (9) is provided with a slide rail (27), and the roller (26) and the slide rail (27) are slidably matched.

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