Zinc impregnation furnace with multipoint temperature acquisition wireless transmission and temperature control device

Abstract

The utility model discloses a zinc impregnation furnace with a multipoint temperature acquisition wireless transmission and temperature control device, which is characterized in that a plurality of independently controlled heating devices are arranged in a hearth of the zinc impregnation furnace along the length direction, a furnace core is provided with a plurality of heating sections, a multipoint temperature measuring thermocouple is arranged in the furnace core, and each temperature measuring point corresponds to one heating section; the multi-point temperature measuring thermocouple is connected with the wireless transmitter, a wireless receiver, a signal distributor, a PIC controller and a heating device controller are arranged in the control cabinet, a temperature display instrument is arranged on the control cabinet, the wireless receiver is connected with the signal distributor, the signal distributor is connected with the PIC controller and the heating device controller, and the heating device controller is electrically connected with the heating device. The plurality of temperature measuring points are arranged in the furnace core, the temperature measuring points are used for measuring the temperature of the heating section, and the heating device controller is used for timely controlling and adjusting the working state of the heating device according to the measured temperature, so that the temperature in the furnace core is uniform, and the zinc impregnation quality of a workpiece is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of zinc diffusion furnace equipment, specifically to a zinc diffusion furnace with multi-point temperature acquisition, wireless transmission and precise temperature control functions. Background Technology

[0002] Powder zinc diffusion involves burying a cleaned workpiece in the core of a zinc diffusion furnace containing a zinc diffusion agent. The furnace is heated to below the melting point of zinc (419.4℃) and held at that temperature for a certain period of time, thereby forming a zinc diffusion layer on the metal surface.

[0003] Currently, the furnace core of a zinc-diffusion furnace is heated by the furnace chamber, meaning the core is heated from the outside. Since the furnace core wall is heated first, and then the heat is transferred to the workpiece in the drum, the furnace wall temperature remains the highest throughout the heating process. Traditional temperature measurement methods simply involve randomly inserting a single-point thermocouple into the furnace core, as long as the obtained temperature reflects the internal temperature. However, with increasingly stringent requirements for zinc-diffusion quality, a deeper understanding of the internal temperature field of the furnace core is needed. This also facilitates the control of external heating points to maintain a balanced temperature field within the core. Therefore, single-point temperature measurement within the furnace core is no longer sufficient for current process needs, and overall heating control is no longer adequate for current zinc-diffusion requirements. Utility Model Content

[0004] In view of this, this application provides a zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device. The furnace chamber of the zinc diffusion furnace is provided with several heating sections, each heating section has an independently controlled heating device, and correspondingly, several temperature measuring points are set inside the furnace core. Each temperature measuring point measures the temperature of a heating section. At the same time, the temperature control device controls and adjusts the working state of the heating device in a timely manner according to the temperature measurement, so that the temperature inside the furnace core is uniform, thereby improving the zinc diffusion quality of the workpiece.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device includes a zinc diffusion furnace chamber, a heating device, a furnace core, a multi-point temperature measuring thermocouple, a wireless transmitter, a control cabinet, a wireless receiver, a signal distributor, a PIC controller, a temperature display instrument, and a heating device controller.

[0007] The zinc diffusion furnace is equipped with several independently controlled heating devices along its length. The furnace core is located inside the furnace. Due to the rotation of the furnace core, it forms several heating sections under the heating of the heating devices. Multi-point temperature measuring thermocouples are installed inside the furnace core. The number of temperature measuring points of the multi-point temperature measuring thermocouples is equal to the number of heating devices, and each temperature measuring point corresponds to a heating section. The furnace core includes a furnace core shaft. The multi-point temperature measuring thermocouples are led out from the furnace core shaft. A wireless transmitter is installed on the furnace core shaft. The multi-point temperature measuring thermocouples are connected to the wireless transmitter. The wireless transmitter converts the temperature values ​​measured by the thermocouples into wireless signals and sends them out.

[0008] The control cabinet is equipped with a wireless receiver, a signal distributor, a PIC controller, and a heating device controller. A temperature display instrument is mounted on the control cabinet. The wireless receiver is connected to the signal distributor, which in turn connects to the PIC controller and the heating device controller. The PIC controller is connected to the temperature display instrument. The heating device controller is electrically connected to the heating device and controls it. The wireless receiver receives signals from the wireless transmitter, converts the wireless signals into analog signals, and transmits them to the PIC controller and the heating device controller via the signal distributor. The PIC controller then transmits the signals to the temperature display instrument, which displays the real-time temperature. The heating device controller receives the analog signals, converts them into furnace temperature data, compares it with the set furnace temperature data, and controls the heating device accordingly.

[0009] Furthermore, the heating device inside the zinc diffusion furnace is a combustion nozzle heating device or an electric heating device.

[0010] Furthermore, when the heating device is a combustion nozzle, it is a natural gas combustion nozzle or a fuel oil combustion nozzle; when the heating device is an electric heating device, it is one of resistance wire heating, electric heating tube heating, or induction heating.

[0011] Furthermore, each temperature measuring point in the multi-point temperature measuring thermocouple is equipped with two independent thermocouples, achieving one in use and one as a backup.

[0012] Furthermore, the wireless transmitter is a multiple-input single-output wireless transmitter.

[0013] Furthermore, the wireless transmitter has an internal battery, eliminating the need for an external power source.

[0014] Furthermore, the wireless transmitter is connected to multiple signal distributors, the number of which is equal to the number of temperature measuring points of the multi-point temperature measuring thermocouple.

[0015] Furthermore, the PIC controller is equipped with a network port, which transmits the temperature data to the all-in-one computer via the network, enabling remote monitoring and storage.

[0016] Furthermore, the heating device controller is a PID controller or a PLC controller.

[0017] This invention relates to a zinc diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device. By setting several independently controlled heating devices within the furnace chamber, the furnace core is divided into several heating sections. Each heating section has multiple temperature-measuring thermocouple points to measure the temperature of that section. The temperature signal is converted into a wireless signal by a wireless transmitter and transmitted. A wireless receiver in the control cabinet receives the temperature signal and transmits it to a PIC controller and a heating device controller via a signal distributor. The PIC controller transmits the signal to a temperature display instrument, which displays the real-time temperature. The heating device controller receives the analog signal, converts it into furnace temperature data, compares it with the set furnace temperature data, and controls the heating device accordingly. This ensures that the temperature throughout the zinc diffusion furnace core is essentially uniform, improving the zinc diffusion quality of the workpiece.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model discloses a zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device. Several independently controlled heating devices in the furnace chamber divide the furnace core into several heating sections. Each heating section in the furnace core has a temperature measuring point. The temperature measured by the measuring point is wirelessly transmitted to the control cabinet. The control cabinet controls the heating devices to achieve uniform temperature inside the furnace core and high zinc diffusion quality of the workpiece.

[0020] This utility model discloses a zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device. The multi-point temperature measuring thermocouples are connected to the wireless transmitter, which simplifies the temperature measurement wiring and improves the system's flexibility and maintainability.

[0021] This utility model discloses a zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device. The PIC controller realizes the reception and processing of temperature signals and supports remote monitoring and fault alarm.

[0022] This utility model discloses a zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device. By increasing the number of temperature measurement points and adjusting the control logic, it can easily adapt to zinc diffusion of different workpieces and different process requirements. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] In the diagram: 1. Zinc diffusion furnace chamber; 2. Heating device; 3. Furnace core; 31. Furnace core shaft; 4. Multi-point temperature measuring thermocouple; 41. Temperature measuring point; 5. Wireless transmitter; 6. Control cabinet; 7. Wireless receiver; 8. Signal distributor; 9. PIC controller; 10. Temperature display instrument; 11. Heating device controller. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0026] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0027] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). Example

[0028] Please refer to Figure 1 A zinc diffusion furnace with a multi-point temperature acquisition wireless transmission and temperature control device includes a zinc diffusion furnace chamber 1, a heating device 2, a furnace core 3, a multi-point temperature measuring thermocouple 4, a wireless transmitter 5, a control cabinet 6, a wireless receiver 7, a signal distributor 8, a PIC controller 9, a temperature display instrument 10, and a heating device controller 11.

[0029] The zinc diffusion furnace chamber 1 is equipped with three independently controlled heating devices 2 along its length. Each independently controlled heating device 2 has three heating and combustion nozzles, which are natural gas combustion nozzles. The three heating and combustion nozzles are evenly distributed on the same circumference of the zinc diffusion furnace chamber 1. The three independently controlled natural gas combustion nozzles are equidistantly distributed along the axial direction in the zinc diffusion furnace chamber 1.

[0030] The furnace core 3 is located inside the zinc diffusion furnace chamber 1. Due to the rotation of the furnace core 3, the furnace core 3 forms three heating sections under the heating of the heating device 2.

[0031] The furnace core 3 is equipped with a multi-point temperature measuring thermocouple 4. The number of temperature measuring points 41 of the multi-point temperature measuring thermocouple 4 is equal to the number of groups of independently controlled heating devices 2. Each temperature measuring point 41 corresponds to a heating section, that is, there are three temperature measuring points 41. Each temperature measuring point 41 of the multi-point temperature measuring thermocouple 4 has two independent thermocouples, one for use and one for backup. Since the working temperature of the zinc diffusion furnace is lower than the melting point of zinc, that is, usually around 400℃, the multi-point temperature measuring thermocouple 4 uses a nickel-chromium-copper-nickel thermocouple, that is, an E-type thermocouple.

[0032] The furnace core 3 includes a furnace core shaft 31. The multi-point temperature measuring thermocouple 4 is led out from the furnace core shaft 31 on one side of the furnace core. The wireless transmitter 5 is installed on the furnace core shaft 31. The multi-point temperature measuring thermocouple 4 is connected to the wireless transmitter 5. The wireless transmitter 5 converts the temperature value measured by the thermocouple into a wireless signal and sends it out.

[0033] The wireless transmitter 5 is a multi-input, single-output temperature transmitter with up to eight measurement points. It is compatible with various types of thermocouples, such as K-type, E-type, and J-type, and converts the corresponding measurement input values ​​into wireless signals. The wireless transmitter 5 uses Zigbee technology for wireless communication. It is powered by a built-in lithium thionyl chloride battery, eliminating both signal and power cables, making it ideal for applications like zinc plating furnace cores where rotation is required and connecting signal and power cables is inconvenient. Specifically, the wireless transmitter 5 can be a YTMX580 multi-input temperature transmitter.

[0034] The control cabinet 6 is located near the zinc diffusion furnace. Due to the use of Zigbee technology, the control cabinet 6 can be located tens of meters away from the zinc diffusion furnace.

[0035] The control cabinet 6 is equipped with a wireless receiver 7, a signal distributor 8, a PIC controller 9, and a heating device controller 11. The control cabinet 6 is also equipped with a temperature display instrument 10.

[0036] The wireless receiver 7 is a transmission device that converts the received wireless signal into a 4-20mA analog signal commonly used in industrial settings. Specifically, the wireless receiver 7 can be a model XS-3004 wireless receiver, and the wireless receiver 7 is connected to a signal distributor.

[0037] The signal distributor 8 is a one-input, two-output analog signal distributor. The signal distributor 8 is connected to the PIC controller 9 and the heating device controller 11. It splits the analog signal received from the wireless receiver 6 into two parts and transmits them to the PIC controller 9 and the heating device controller 11 respectively.

[0038] The PIC controller 9 is connected to the temperature display instrument 10. The PIC controller 9 transmits signals to the temperature display instrument 10, which displays the real-time temperature. Simultaneously, the PIC controller 9 has a network port, allowing it to transmit signals to the all-in-one computer via a wired network. The all-in-one computer's data acquisition software generates report curves based on team, product, and furnace temperature information, with each furnace independently storing a furnace temperature curve. The all-in-one machine can be installed in the control room or office for remote monitoring.

[0039] The heating device controller 11 is a PLC controller. The heating device controller 11 is electrically connected to the heating device 2 and controls the heating device 2. The PLC controller is electrically connected to the burner controller on the natural gas burner and controls the combustion state of the natural gas burner.

[0040] The PLC controller 11 determines whether the temperature inside the furnace is uniform and whether it exceeds the specified range based on the furnace temperature curve, analyzes the data, and controls product quality.

[0041] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device, characterized in that: It includes the zinc diffusion furnace chamber (1), heating device (2), furnace core (3), multi-point temperature measuring thermocouple (4), wireless transmitter (5), control cabinet (6), wireless receiver (7), signal distributor (8), PIC controller (9), temperature display instrument (10), and heating device controller (11). The zinc diffusion furnace chamber (1) is equipped with several independently controlled heating devices (2) along its length. The furnace core (3) is located inside the zinc diffusion furnace chamber (1). The furnace core (3) forms several heating sections under the heating of the heating devices (2). The furnace core (3) is equipped with multi-point temperature measuring thermocouples (4). The number of temperature measuring points (41) of the multi-point temperature measuring thermocouples (4) is equal to the number of heating devices (2). Each temperature measuring point (41) corresponds to a heating section. The furnace core (3) includes a furnace core shaft (31). The multi-point temperature measuring thermocouples (4) are led out from the furnace core shaft (41). The wireless transmitter (5) is installed on the furnace core shaft (31). The multi-point temperature measuring thermocouples (4) are connected to the wireless transmitter (5). The control cabinet (6) is equipped with a wireless receiver (7), a signal distributor (8), a PIC controller (9), and a heating device controller (11). The control cabinet (6) is equipped with a temperature display instrument (10). The wireless receiver (7) is connected to the signal distributor (8). The signal distributor (8) is connected to the PIC controller (9) and the heating device controller (11). The PIC controller (9) is connected to the temperature display instrument (10). The heating device controller (11) is electrically connected to the heating device (2).

2. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: The heating device (2) inside the zinc diffusion furnace (1) is a combustion nozzle heating or an electric heating device.

3. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 2, characterized in that: When the heating device (2) is a combustion nozzle, it is a natural gas combustion nozzle or a fuel oil combustion nozzle. When the heating device (2) is an electric heating device, it is one of resistance wire heating, electric heating tube heating or induction heating.

4. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: Each temperature measuring point in the multi-point temperature measuring thermocouple (4) is equipped with two independent thermocouples.

5. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: The wireless transmitter (5) is a multiple-input single-output wireless transmitter.

6. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 5, characterized in that: The wireless transmitter (5) has a battery inside.

7. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: The wireless transmitter (7) is connected to multiple signal distributors (8), the number of which is equal to the number of temperature measuring points (41) of the multi-point temperature measuring thermocouple (4).

8. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: The PIC controller (9) is equipped with a network port.

9. A zinc-diffusion furnace with a multi-point temperature acquisition, wireless transmission, and temperature control device according to claim 1, characterized in that: The heating device controller (11) is a PID controller or a PLC controller.

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