Temperature measuring and controlling system for drying oven of tentering setting machine

Abstract

The utility model relates to the technical field of tentering setting machines, in particular to a temperature measurement and control system for a tentering setting machine oven, which comprises an air guide volute and a heating device which are oppositely arranged on two sides of the oven, and one side of the air guide volute, which is opposite to the heating device, is arranged as an air inlet and outlet side of the air guide volute. An upper air inlet and a lower air inlet are transversely formed in the lower portion of the air inlet and outlet side by side, an upper air outlet and a lower air outlet are vertically formed in the upper portion of the air inlet and outlet side by side, and the upper air outlet is formed above the lower air outlet. According to the utility model, the temperature measurement deviation caused by the rotating speed difference of the two thermal circulation fans is avoided, and the accurate measurement of the internal temperature of the oven is realized; the PLC processor calculates temperature measurement data of the temperature sensing module and adjusts the working state of the combustor in real time through the temperature control meter, so that accurate control over the temperature in the oven is achieved.

Description

Technical Field

[0001] This utility model relates to the field of tenter frame machine technology, and in particular to a temperature measurement and control system for a tenter frame machine oven. Background Technology

[0002] The tenter frame is a crucial finishing device after textile printing and dyeing. During operation, the textile to be set is fed into the machine via a stripper. The machine hangs both ends of the fabric web on needle plates, which then guide the fabric web into the tenter frame's oven. The oven heats the fabric surface. As the temperature rises, moisture, solvents, oils, and other organic substances carried by the fibers throughout the fabric begin to evaporate, thus ensuring the fabric is set.

[0003] Existing tenter frame drying ovens typically only have a single temperature sensor inside the air guide volute for temperature measurement. The output temperature of the heating device is manually adjusted based on the sensor's readings, resulting in significant measurement errors and untimely feedback. Especially when the speeds of the two circulating fans differ considerably (due to process requirements), the temperature detected by the sensor cannot accurately reflect the true temperature of the airflow inside the air guide volute, leading to temperature deviations within the oven and even overheating, severely impacting the quality of the shaped fabric. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a temperature measurement and control system for a tenter frame oven that is accurate in temperature measurement and provides timely temperature feedback and adjustment, addressing the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A temperature measurement and control system for a tenter frame oven is characterized by comprising air guide volutes and heating devices arranged opposite each other on both sides of the oven. The side of the air guide volutes facing the heating devices is designated as the air inlet and outlet side. The lower part of the air inlet and outlet side is provided with an upper air inlet and a lower air inlet arranged horizontally side by side, and the upper part of the air inlet and outlet side is provided with an upper air outlet and a lower air outlet arranged vertically side by side. The upper air outlet is located above the lower air outlet. The air guide volutes are provided with an upper air channel and a lower air channel that are not interconnected. The upper air channel connects the upper air inlet and the upper air outlet, and the lower air channel connects the lower air inlet and the lower air outlet. A first temperature sensing rod and a second temperature sensing rod are fixedly inserted into the side insulation plate of the oven adjacent to the air guide volutes. One end of the first temperature sensing rod passes through a corresponding first through hole on the air guide volutes and extends into the upper air channel, and one end of the second temperature sensing rod passes through a corresponding second through hole on the air guide volutes and extends into the lower air channel.

[0007] The technical problem to be solved by this utility model can be further achieved through the following steps: a first fan and a second fan are installed on the side insulation plate near the air guide volute of the oven. The impeller of the first fan is located in the upper air channel and faces the upper air inlet, and the impeller of the second fan is located in the lower air channel and faces the lower air inlet. The first temperature sensing rod and the second temperature sensing rod are arranged in parallel. The first temperature sensing rod is located between the first fan and the second fan, and the second temperature sensing rod is located between the first temperature sensing rod and the second fan.

[0008] The technical problem to be solved by this utility model can be further achieved through the following steps: both the upper and lower wind outlets are horizontally extending strip structures, and both the upper and lower wind outlets are equipped with connecting grid plates for connecting the air ducts.

[0009] The technical problem to be solved by this utility model can be further achieved through the following steps, including a data processing module connected to the first and second temperature sensing rods, a temperature control module and a host computer respectively connected and communicating with the data processing module.

[0010] The technical problem to be solved by this utility model can be further achieved through the following steps: the data processing module is specifically a PLC processor, which is electrically connected to the first temperature sensing rod and the second temperature sensing rod respectively, so as to receive the temperature signals transmitted by the first temperature sensing rod and the second temperature sensing rod, and calculate the actual temperature inside the air guide volute through the built-in program algorithm.

[0011] The technical problem to be solved by this utility model can be further achieved through the following steps: the temperature control module is specifically a temperature controller, which is electrically connected to the data processing module to receive temperature data sent by the data processing module, compare it with the preset temperature setpoint, and generate a corresponding control signal.

[0012] The technical problem to be solved by this utility model can be further achieved through the following steps: the heating device is specifically a burner, which is electrically connected to the temperature control module to receive the control signal sent by the temperature control module and adjust the output temperature according to the received control signal.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by optimizing the layout of the air guide volute and setting the first and second temperature sensing rods in the upper and lower air channels respectively, the temperature measurement deviation caused by the difference in the speed of the two hot air circulation fans is avoided, and the accurate measurement of the internal temperature of the drying oven is achieved; the PLC processor calculates the temperature measurement data of the temperature sensing module and adjusts the working state of the burner in real time through the temperature controller, thereby achieving precise control of the internal temperature of the drying oven, effectively reducing the overheating phenomenon and ensuring the quality of the finished fabric. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the layout of this utility model;

[0015] Figure 2 This is a schematic diagram illustrating the application of this utility model;

[0016] Figure 3 This is a schematic diagram showing the installation location of the thermocouple;

[0017] Figure 4 for Figure 3 A left-view diagram;

[0018] Figure 5 Here is a schematic diagram of the air guide volute structure;

[0019] Figure 6 Schematic diagram b shows the structure of the air guide volute.

[0020] Figure 7 Schematic diagram of the downwind channel of the air guide volute ( Figure 5 (Partial sectional view)

[0021] Figure 8 Schematic diagram of the upper air passage of the air guide volute ( Figure 6 (Diagram showing the removal of the top and rear side panels)

[0022] In the diagram: 1-Air guide volute; 2-Heating device; 3-Upper air inlet; 4-Lower air inlet; 5-Upper air outlet; 6-Lower air outlet; 7-Upper air passage; 8-Lower air passage; 9-First temperature sensing rod; 10-Second temperature sensing rod; 11-First through hole; 12-Second through hole; 13-First fan; 14-Second fan; 15-Connecting grid plate; 16-Baffle plate; 17-Hot and cold air mixing passage; 18-Air exhaust; 19-Side insulation plate. Detailed Implementation

[0023] The specific technical solutions of this utility model are further described below to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0025] Please refer to Figure 1-8A temperature measurement and control system for a tenter frame drying oven includes air guide volutes 1 and heating devices 2 facing each other on both sides of the drying oven. The side of the air guide volutes 1 facing the heating devices 2 is designated as the air inlet and outlet side of the air guide volutes 1. Please refer to... Figure 4-7 The lower part of the air inlet and outlet side is provided with an upper air inlet 3 and a lower air inlet 4 arranged horizontally side by side. The upper part of the air inlet and outlet side is provided with an upper air outlet 5 and a lower air outlet 6 arranged vertically side by side. The upper air outlet 5 is located above the lower air outlet 6. The air guide volute 1 is provided with an upper air channel 7 and a lower air channel 8 that are not interconnected. The upper air channel 7 connects the upper air inlet 3 and the upper air outlet 5, and the lower air channel 8 connects the lower air inlet 4 and the lower air outlet 6. A first temperature sensing rod 9 and a second temperature sensing rod 10 are fixedly inserted into the side insulation plate 19 of the oven adjacent to the air guide volute. One end of the first temperature sensing rod 9 passes through the corresponding first through hole 11 on the air guide volute 1 and extends into the upper air channel 7. One end of the second temperature sensing rod 10 passes through the corresponding second through hole 12 on the air guide volute 1 and extends into the lower air channel 8.

[0026] Please refer to Figure 7 The bottom of the air guide volute 1 is provided with a W-shaped air guide plate 16, which has two concave parts on the left and right and an upper convex part between the concave parts. The upper air inlet 3 and the lower air inlet 4 are respectively set opposite to the two concave parts of the air guide plate 16 to ensure uniform airflow distribution and reduce resistance.

[0027] Please refer to Figure 1-3 A first fan 13 and a second fan 14 are installed on the side insulation plate 19 near the air guide volute 1 of the oven. The impeller of the first fan 13 is located in the upper air passage 7 and faces the upper air inlet 3. The impeller of the second fan 14 is located in the lower air passage 8 and faces the lower air inlet 4. The first temperature sensing rod 9 and the second temperature sensing rod 10 are arranged in parallel. The first temperature sensing rod 9 is located between the first fan 13 and the second fan 14, and the second temperature sensing rod 10 is located between the first temperature sensing rod 9 and the second fan 14 to ensure that they can accurately measure the temperature in their respective passages.

[0028] Please refer to Figure 4 Both the upper wind outlet 5 and the lower wind outlet 6 are horizontally extending strip structures, and both the upper wind outlet 5 and the lower wind outlet 6 are equipped with connecting grid plates 15 for connecting to the air duct 18.

[0029] Please refer to Figure 8 The present invention also includes a data processing module connected to the first and second temperature sensing rods, a temperature control module connected to the data processing module for communication, and a host computer.

[0030] The data processing module is specifically a PLC processor, which is electrically connected to the first temperature sensing rod 9 and the second temperature sensing rod 10 to receive the temperature signals transmitted by the first temperature sensing rod 9 and the second temperature sensing rod 10, and calculate the actual temperature inside the air guide volute 1 through the built-in program algorithm.

[0031] The temperature control module is specifically a temperature controller, which is electrically connected to the data processing module to receive temperature data sent by the data processing module, compare it with the preset temperature setpoint, and generate a corresponding control signal.

[0032] The heating device 2 is specifically a burner, which is electrically connected to the temperature control module to receive control signals sent by the temperature control module and adjust the output temperature according to the received control signals.

[0033] Working Principle: This utility model discloses a temperature measurement and control system for a tenter frame drying oven. During oven operation, hot air ejected from the burner passes through the hot and cold air mixing channel 17 and enters the air guide volute 1 through the lower air inlet 4 and upper air inlet 3 respectively. Under the action of the first fan 13 and the second fan 14, it passes through the lower air channel 8 and upper air channel 7 respectively, reaching the lower air outlet 6 and upper air outlet 5, and finally being blown onto the fabric surface through the exhaust vent on the air outlet 18. During this process, the first temperature sensor 9 and the second temperature sensor 10 simultaneously measure the temperature within the upper air channel 7 and lower air channel 8, converting the measurement results into electrical signals. The PLC processor receives these electrical signals, processes and analyzes them, calculates the actual temperature of the oven using an internal algorithm, and transmits this temperature data to the temperature controller and the host computer for display and monitoring. The temperature controller compares the actual temperature with the preset temperature setpoint and generates corresponding control signals based on the comparison results to adjust the burner's output temperature, thereby achieving precise temperature control inside the oven.

[0034] By optimizing the layout of the air guide volute 1 and installing a first temperature sensing rod 9 and a second temperature sensing rod 10 in the upper air channel 7 and lower air channel 8 respectively, temperature measurement deviations caused by the difference in speed between the two heat circulation fans are avoided, thus achieving accurate measurement of the internal temperature of the drying oven. Simultaneously, the PLC processor performs real-time calculation and processing of the temperature measurement data from the temperature sensing module and adjusts the burner's operating status in real-time via a temperature controller, thereby achieving precise control of the internal temperature of the drying oven and ensuring the quality of the finished fabric.

[0035] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A temperature measuring and controlling system for a tentering oven, characterized by: The air guide volute opposite to the heating device is provided with an air inlet and an air outlet, and the air guide volute is provided with an upper air passage and a lower air passage.

2. The temperature measuring and controlling system for the tentering oven according to claim 1, characterized in that: The first temperature sensing rod and the second temperature sensing rod are fixed on the heat preservation plate adjacent to the air guide volute, one end of the first temperature sensing rod penetrates through the first through hole of the air guide volute and extends into the upper air passage, and one end of the second temperature sensing rod penetrates through the second through hole of the air guide volute and extends into the lower air passage.

3. The temperature measuring and controlling system for the tentering oven according to claim 1, characterized in that: The first fan and the second fan are installed on the heat preservation plate adjacent to the air guide volute, the impeller of the first fan is arranged in the upper air passage and opposite to the air inlet, and the impeller of the second fan is arranged in the lower air passage and opposite to the air outlet.

4. The temperature measuring and controlling system for the tentering oven according to claim 1, characterized in that: The first temperature sensing rod and the second temperature sensing rod are parallel, the first temperature sensing rod is arranged between the first fan and the second fan, and the second temperature sensing rod is arranged between the first temperature sensing rod and the second fan.

5. The temperature measuring and controlling system for the tentering oven according to claim 4, characterized in that: The air outlet and the air outlet are both long strip structures extending horizontally, and the connecting grating plates for connecting the air exhaust are installed at the air outlet and the air outlet.

6. The temperature measuring and controlling system for the tentering oven according to claim 4, characterized in that: The data processing module connected with the first temperature sensing rod and the second temperature sensing rod, the temperature control module and the upper computer connected with the data processing module.

7. The temperature measuring and controlling system for the tentering oven according to claim 4, characterized in that: The data processing module is a PLC processor, which is electrically connected with the first temperature sensing rod and the second temperature sensing rod to receive the temperature signals transmitted by the first temperature sensing rod and the second temperature sensing rod, and calculates the actual temperature in the air guide volute through the built-in program algorithm. The temperature control module is a temperature control meter, which is electrically connected with the data processing module to receive the temperature data sent by the data processing module and compare with the preset temperature setting value to generate corresponding control signals. The heating device is a burner, which is electrically connected with the temperature control module to receive the control signals sent by the temperature control module and adjust the output temperature according to the received control signals.

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