Continuous temperature measuring device for drying tunnel
By setting up an infrared thermometer and judgment device on the drying line of the coating production line, real-time temperature monitoring and data acquisition of workpieces are realized, the problem of inaccurate temperature monitoring in the drying line is solved, and product quality and energy utilization efficiency are improved.
Patent Information
- Application Number
- CN202421785714.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In the drying line of the coating production line, it is difficult to accurately monitor the real-time temperature and baking time of the workpiece, resulting in incomplete curing of the product or over-baking at high temperatures, affecting product quality and wasting energy.
A continuous temperature measuring device for drying passages is designed. By setting an infrared thermometer on the side wall of the drying passages and setting a judgment device at the entrance, the workpiece enters and moves at the speed of the workpiece, and the workpiece temperature is monitored in real time.
Real-time temperature monitoring of workpieces in the drying line is realized, and the temperature change curve is provided, which facilitates timely understanding of data, daily management and quality inspection, and optimizes process parameters.
Smart Images
Figure CN222837676U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of temperature monitoring of a drying oven line, in particular to a continuous temperature measuring device for a drying oven. Background Art
[0002] The temperature and time of the coating production line are very important process parameters during baking. However, in the actual production process, the temperature of the workpiece and the effective baking time are often not accurately controlled. This is because the temperature of the drying tunnel is often obtained by testing the temperature of the air in the drying tunnel through a probe. The temperature of the product curing refers to the actual surface temperature of the workpiece. Due to the different heat capacities of the products, the heating speed varies. As a result, the air temperature in the drying tunnel sometimes varies greatly. Due to inaccurate temperature, the curing time of the workpiece within the effective temperature cannot be controlled, which will result in incomplete curing of the product workpiece or over-baking at high temperature. Ultimately, the coating product is unqualified. Sometimes it will also cause unnecessary waste of energy.
[0003] In order to ensure the quality of baked products and effectively utilize energy, only by accurately controlling the temperature and time can we ensure that the process of coating products meets the requirements.
[0004] At present, the solution to this problem is often to use a furnace temperature tracker. The furnace temperature tracker is a temperature recorder that is placed in an insulation sleeve and hung on a hook with the workpiece. It runs with the workpiece. Thus, the curing curve of the workpiece is recorded. However, the furnace temperature tracker cannot be used continuously for a long time. It can only be used for daily inspection and testing. However, for some drying tunnels, product changes often occur, resulting in frequent changes in the chain speed of the hanging chain and the furnace temperature in the drying tunnel. Therefore, it is very necessary to timely understand the real-time temperature and time data of the workpiece. Utility Model Content
[0005] The utility model aims to provide a continuous temperature measuring device for a drying tunnel, thereby solving the problem of monitoring the temperature of workpieces in a drying tunnel line.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A continuous temperature measurement device for a drying tunnel comprises a drying tunnel line, wherein a plurality of infrared thermometers are arranged on a side wall in the width direction of the drying tunnel line, the temperature detection direction of the infrared thermometers is along the width direction of the drying tunnel line, and the plurality of infrared thermometers are arranged in a matrix along the length direction of the drying tunnel line; and a judgment device for identifying whether a workpiece passes through is arranged at the entrance of the drying tunnel line.
[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the arrangement spacing of the infrared thermometers in the height direction of the drying line is 30-60 cm.
[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the arrangement spacing of the infrared thermometers in the height direction of the drying line is 50 cm.
[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the arrangement spacing of the infrared thermometers in the length direction of the drying line is 100-200 cm.
[0011] On the basis of the above scheme and as a preferred scheme of the above scheme: the arrangement spacing of the infrared thermometers in the length direction of the drying line is 150 cm.
[0012] On the basis of the above scheme and as a preferred scheme of the above scheme: the drying line is a suspended drying line.
[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the judgment device includes two groups of adjacently arranged photoelectric sensors arranged in the direction of the entrance of the drying tunnel, and the two groups of photoelectric sensors are arranged along the length direction of the tunnel.
[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: the photoelectric sensors are opposing-beam photoelectric switches, each group of the photoelectric sensors includes a pair of opposing-beam photoelectric switches, and the paired photoelectric switches are respectively arranged on both sides of the drying tunnel in the width direction.
[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: the distance between the two groups of photoelectric sensors is greater than 1 cm.
[0016] On the basis of the above scheme and as a preferred scheme of the above scheme: the number of the judgment devices is two, the two judgment devices are arranged along the length direction of the drying line, and the distance between the two judgment devices is greater than the maximum contour diameter of the workpiece.
[0017] In order to solve the problem of monitoring the temperature of workpieces in the drying line, the utility model has the following beneficial effects:
[0018] The utility model provides a drying tunnel continuous temperature measuring device which determines whether a workpiece has entered the drying tunnel line by means of a judgment device, and calculates, in conjunction with the workpiece moving speed set for the drying tunnel line, that the workpiece has sequentially passed through an area that can be monitored by an infrared thermometer fixedly arranged in a matrix inside the drying tunnel line, and reads the temperature of the workpiece through the infrared thermometer directly facing it when passing through.
[0019] Multiple or one infrared thermometer in the height direction can monitor the temperature of a single point or multiple points in the height direction of the workpiece. The infrared thermometer in the length direction of the drying line can read the real-time temperature of the workpiece in the drying line in real time during the heating process, and obtain the temperature change curve during the movement process.
[0020] The monitoring of workpiece temperature is convenient for timely understanding of data and daily management; it is also conducive to quality inspection and adjustment of later process parameters.
[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a schematic diagram of a continuous temperature measuring device for a drying tunnel of the present utility model;
[0023] Figure 2 It is an enlarged view of part A of the utility model;
[0024] Figure 3 It is a schematic diagram of a cross-section of a continuous temperature measuring device for a drying tunnel of the present invention. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments.
[0026] See also Figure 1-3 The utility model discloses a continuous temperature measuring device for a drying tunnel, which comprises a drying tunnel line 100. A plurality of infrared thermometers 200 are arranged on a side wall of the drying tunnel line 100 in a width direction. The temperature detection direction of the infrared thermometers 200 is along the width direction of the drying tunnel line 100. The plurality of infrared thermometers 200 are arranged in a matrix along the length direction of the drying tunnel line 100. A judgment device 300 for identifying whether a workpiece 400 passes through is arranged at the entrance of the drying tunnel line 100.
[0027] The drying tunnel continuous temperature measuring device of the utility model determines whether a workpiece 400 enters the drying tunnel line 100 through the judgment device 300, and calculates the workpiece 400 in accordance with the moving speed of the workpiece 400 set in the drying tunnel line 100, and sequentially passes through the area that can be monitored by the infrared thermometer 200 fixedly arranged in a matrix inside the drying tunnel line 100, and reads, records and saves the temperature of the workpiece 400 through the infrared thermometer 200 directly facing it when passing through.
[0028] The temperature of a single point or multiple points in the height direction of the workpiece 400 can be monitored by using multiple or one infrared thermometer 200 in the height direction. The real-time temperature of the workpiece 400 during the heating process in the drying tunnel 100 can be read in real time by using the infrared thermometer 200 in the length direction of the drying tunnel 100, and the temperature change curve during the movement can be obtained (which can be executed by the PC function module of the peripheral device).
[0029] The monitoring of the 400 temperature of the workpiece is convenient for timely understanding of data and daily management; it is also conducive to quality inspection and adjustment of later process parameters.
[0030] The arrangement spacing of the infrared thermometers 200 in the height direction of the drying line 100 is generally 30-60 cm, preferably 50 cm. According to the size of the workpiece 400 or the height of the drying line 100, 3-4 infrared thermometers 200 can be set, wherein the number set in the height direction is generally 3.
[0031] The infrared thermometers 200 are arranged at a spacing of 100-200 cm in the length direction of the drying tunnel 100, preferably 150 cm.
[0032] The drying line 100 is preferably a hanging type drying line, and of course, it can also be a general conveyor type drying line.
[0033] The judging device 300 includes two groups of adjacently arranged photoelectric sensors 301 arranged in the direction of the entrance of the drying tunnel 100. The two groups of photoelectric sensors 301 are arranged along the length direction of the tunnel (the spacing is less than the maximum outline diameter of the workpiece 400). The photoelectric sensors 301 are used to monitor whether a workpiece 400 has passed. It is worth noting that the purpose of the two groups of adjacently arranged photoelectric sensors 301 is that if the passing object cannot be detected by the two groups of photoelectric sensors 301 at the same time, it is judged that the passing object is not the workpiece 400, and the infrared thermometer 200 in the drying tunnel 100 does not need to monitor the temperature of the passing object. Otherwise, it needs to be monitored and recorded.
[0034] Furthermore, the photoelectric sensors 301 are opposing photoelectric switches, and each group of photoelectric sensors 301 includes a pair of opposing photoelectric switches, and the paired photoelectric switches are respectively arranged on both sides of the width direction of the drying line 100. Among them, the distance between the two groups of photoelectric sensors 301 should be greater than 1 cm to facilitate the rejection of hooks and the like passing by and being identified.
[0035] Furthermore, two judging devices 300 are provided, and the two judging devices 300 are arranged along the length direction of the drying line 100, and the distance between the two judging devices 300 is greater than the maximum outline diameter of the workpiece 400. First, each judging device 300 can judge whether the passing object belongs to the workpiece 400, and secondly, the time taken by the workpiece 400 to pass through the judging device 300 is used to check and calibrate the moving speed of the workpiece 400 on the drying line 100.
[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A drying oven continuous temperature measurement device, comprising a drying oven line (100), characterized in that: A plurality of infrared thermometers (200) are arranged on a side wall in the width direction of the drying line (100); the temperature detection direction of the infrared thermometers (200) is along the width direction of the drying line (100); and the plurality of infrared thermometers (200) are arranged in a matrix along the length direction of the drying line (100); and a judgment device (300) for identifying whether a workpiece (400) passes through is arranged at the entrance of the drying line (100).
2. A drying tunnel continuous temperature measuring device according to claim 1, characterized in that: The infrared thermometers (200) are arranged at a spacing of 30-60 centimeters in the height direction of the drying line (100).
3. A drying tunnel continuous temperature measuring device according to claim 2, characterized in that: The infrared thermometers (200) are arranged at a spacing of 50 centimeters in the height direction of the drying line (100).
4. A drying tunnel continuous temperature measuring device according to claim 1, characterized in that: The infrared thermometers (200) are arranged at a spacing of 100-200 centimeters in the length direction of the drying line (100).
5. A drying tunnel continuous temperature measuring device according to claim 4, characterized in that: The infrared thermometers (200) are arranged at a spacing of 150 centimeters in the length direction of the drying line (100).
6. A drying tunnel continuous temperature measurement device according to claim 1, characterized in that: The drying line (100) is a suspended drying line.
7. The continuous temperature measuring device for a drying tunnel according to claim 1, characterized in that: The judgment device (300) comprises two groups of adjacently arranged photoelectric sensors (301) arranged in the entrance direction of the drying tunnel (100), and the two groups of photoelectric sensors (301) are arranged along the length direction of the tunnel.
8. A drying tunnel continuous temperature measuring device according to claim 7, characterized in that: The photoelectric sensors (301) are opposing-beam photoelectric switches. Each group of the photoelectric sensors (301) comprises a pair of opposing-beam photoelectric switches. The paired photoelectric switches are respectively arranged on both sides of the drying line (100) in the width direction.
9. A drying tunnel continuous temperature measurement device according to claim 8, characterized in that: The distance between the two groups of photoelectric sensors (301) is greater than 1 cm.
10. A drying tunnel continuous temperature measuring device according to claim 7, characterized in that: The number of the judging devices (300) is two, the two judging devices (300) are arranged along the length direction of the drying line (100), and the distance between the two judging devices (300) is greater than the maximum outline diameter of the workpiece (400).