Sintering furnace for metal surface treatment

Abstract

The utility model discloses a sintering furnace for metal surface treatment, which belongs to the technical field of metal surface treatment, and comprises a sintering furnace main body and a control system for adjusting heat and operation of part of equipment in real time, the interior of the sintering furnace main body is divided into a sintering chamber and a circulation chamber, according to the sintering furnace, an existing waste heat recovery device is improved, direct impact of high-temperature gas on heat exchange equipment is avoided, aging and damage of the heat exchange equipment can be effectively reduced, and therefore the service life of the sintering furnace is prolonged; secondly, a flow and temperature detection mechanism is introduced, the flow and temperature of gas entering the circulation chamber are monitored in real time, temperature compensation is conducted on a heating element in real time, fluctuation of the temperature in the sintering chamber can be remarkably reduced, it is ensured that a coating is cured in a stable temperature environment, and therefore the coating quality is optimized.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment technology, and more specifically, to a sintering furnace for metal surface treatment. Background Technology

[0002] In the Dacromet process, the sintering furnace is one of the key pieces of equipment. Using the sintering furnace to cure the coating on the metal surface is a crucial step in ensuring coating quality, optimizing coating performance, and improving production efficiency. Through this process, a Dacromet coating with excellent corrosion resistance can be formed, providing reliable protection for the long-term use of metal products.

[0003] Currently, although there are some waste heat recovery devices on the market, most of them have complex structures and control systems that cannot be adapted to sintering furnaces used for metal surface treatment, making it difficult to meet the actual use requirements of sintering furnaces.

[0004] Most existing waste heat recovery devices use heat exchangers installed on exhaust ducts to transfer heat from the exhaust air to other media, such as water or air, thereby achieving heat recovery. While this method is simple and direct, the high temperature of the gas in the exhaust ducts makes direct heat exchange prone to aging and damage to the intake ducts, thus shortening the equipment's lifespan. Furthermore, existing waste heat recovery devices lack precise flow and temperature detection mechanisms, failing to monitor the flow and temperature of the gas entering the sintering furnace in real time. This results in heating components being unable to accurately compensate for temperature fluctuations, potentially leading to excessive temperature fluctuations inside the sintering furnace and ultimately affecting product quality. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a sintering furnace for metal surface treatment. Firstly, it improves the existing waste heat recovery device, avoiding the direct impact of high-temperature gas on the heat exchange equipment, which can effectively reduce the aging and damage of the heat exchange equipment, thereby extending the service life of the equipment. Secondly, it introduces a flow and temperature detection mechanism to monitor the flow and temperature of the gas entering the sintering chamber in real time, enabling the heating elements to perform temperature compensation in real time. This can significantly reduce the temperature fluctuation inside the sintering chamber, ensuring that the coating is cured in a stable temperature environment, thereby optimizing the coating quality and improving the corrosion resistance and durability of the product.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A sintering furnace for metal surface treatment includes a sintering furnace body and a control system for real-time heat adjustment and operation of some equipment. The interior of the sintering furnace body is divided into a sintering chamber and a transfer chamber. A heat exchange chamber is located on the left side of the sintering furnace body. Waste heat utilization mechanisms are installed in the sintering furnace body and the heat exchange chamber. The waste heat utilization mechanism includes an exhaust pipe installed at the top of the sintering furnace body. A fan is installed on the left side of the heat exchange chamber. An air inlet pipe is fixedly connected to the output end of the fan. The end of the exhaust pipe away from the heat exchange chamber and the end of the air inlet pipe away from the fan both extend into the heat exchange chamber. A connecting pipe is fixedly connected to the tail end of the air inlet pipe, and the end of the connecting pipe away from the air inlet pipe passes through the heat exchange chamber and extends into the transfer chamber. The control system includes components installed on the connecting pipe. The furnace body includes an intake flow and temperature sensor at the beginning, a heating element at the end of the connecting pipe, a temperature detection sensor in the sintering chamber, and fixed and movable partitions arranged vertically within the furnace body to separate the sintering chamber and the transfer chamber. The fixed partition has multiple through holes (first type), and the movable partition has multiple through holes (second type). An extension plate is fixedly connected to the inner left side wall of the furnace body, and a sliding groove is provided on the extension plate. The left end of the movable partition is located within the sliding groove and slidably connected thereto. An integrally formed mounting box is located at the right end of the furnace body, and an electric push rod is installed inside the mounting box. The electric push rod has an output shaft fixedly connected to the right end of the movable partition.

[0010] Furthermore, the heat exchange chamber is covered with insulation material, and the exhaust pipe located outside the heat exchange chamber is also covered with insulation material, which is rock wool.

[0011] Furthermore, the exhaust pipe and the air inlet pipe are arranged in a double spiral shape in the heat exchange chamber, and the part where the two are in contact with each other is made of a high thermal conductivity material.

[0012] Furthermore, a support frame is fixedly connected between the bottom surface of the extension plate and the inner wall of the sintering furnace body.

[0013] Furthermore, the connecting pipe is used to monitor the flow rate and temperature of the gas entering the sintering furnace body in real time. The heating element is used to automatically adjust the heating power according to the real-time monitored air flow rate and temperature data to achieve temperature compensation of the gas at the air inlet. The temperature detection sensor is used to monitor the temperature in the circulation chamber in real time. The electric push rod is used to automatically control the movable partition to make its through hole two coincide with through hole one when the temperature detection sensor detects that the temperature in the circulation chamber has reached the specified working range of the sintering furnace body, so as to realize the air supply operation. The control system is connected to the above components and is used to receive data from the connecting pipe and the temperature detection sensor, and control the heating power of the heating element and the operation of the electric push rod according to the preset algorithm and logic, thereby realizing precise control of the temperature inside the sintering furnace body and efficient utilization of waste heat.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] This solution first improves the existing waste heat recovery device to avoid the direct impact of high-temperature gas on the heat exchange equipment, which can effectively reduce the aging and damage of the heat exchange equipment and thus extend the service life of the equipment. Secondly, it introduces a flow and temperature detection mechanism to monitor the flow and temperature of the gas entering the circulation chamber in real time, so that the heating components can perform temperature compensation in real time, which can significantly reduce the temperature fluctuation inside the sintering chamber and ensure that the coating is cured in a stable temperature environment, thereby optimizing the coating quality and improving the corrosion resistance and durability of the product. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This utility model Figure 1 Enlarged view of section B in the middle.

[0020] Explanation of the labels in the diagram:

[0021] 1. Sintering furnace body; 101. Sintering chamber; 102. Transfer chamber; 103. Mounting box; 2. Heat exchange chamber; 3. Exhaust duct; 4. Fan; 5. Inlet duct; 501. Connecting pipe; 502. Inlet flow and temperature sensor; 6. Heating components; 7. Temperature detection sensor; 8. Fixed partition; 801. Through hole one; 9. Movable partition; 901. Through hole two; 10. Extension plate; 1001. Slide groove; 1002. Support frame; 11. Electric push rod; 12. Output shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-3 A sintering furnace for metal surface treatment includes a sintering furnace body 1 and a control system for real-time adjustment of heat and operation of some equipment. The interior of the sintering furnace body 1 is divided into a sintering chamber 101 and a transfer chamber 102. A heat exchange chamber 2 is provided on the left side of the sintering furnace body 1. Waste heat utilization mechanisms are provided in the sintering furnace body 1 and the heat exchange chamber 2.

[0027] The waste heat utilization mechanism includes an exhaust pipe 3 installed at the top of the sintering furnace body 1, a fan 4 installed on the left side of the heat exchange chamber 2, and an air inlet pipe 5 fixedly connected to the output end of the fan 4. Both the end of the exhaust pipe 3 furthest from the heat exchange chamber 2 and the end of the air inlet pipe 5 furthest from the fan 4 extend into the heat exchange chamber 2. The heat exchange chamber 2 is externally covered with insulation material, and the end of the exhaust pipe 3 outside the heat exchange chamber 2 is also externally covered with insulation material. The insulation material is rock wool, which has good thermal insulation performance and effectively reduces heat loss during the transmission process within the exhaust pipe 3. This reduces heat loss during use and allows the gas in the inlet pipe 5 to be preheated in the heat exchange chamber 2. The exhaust pipe 3 and the inlet pipe 5 are arranged in a double spiral shape in the heat exchange chamber 2, and the part where they are in contact with each other is made of a high thermal conductivity material, which can effectively improve the preheating effect of the inlet pipe 5 in the heat exchange chamber 2. The end of the inlet pipe 5 is fixedly connected to a connecting pipe 501, and the end of the connecting pipe 501 away from the inlet pipe 5 passes through the heat exchange chamber 2 and extends into the circulation chamber 102.

[0028] The control system includes an airflow and temperature sensor 502 installed at the beginning of the connecting pipe 501, a heating element 6 installed at the end of the connecting pipe 501, a temperature detection sensor 7 installed in the sintering chamber 101, and fixed partitions 8 and movable partitions 9 arranged vertically inside the sintering furnace body 1. The fixed partitions 8 and movable partitions 9 are used to separate the sintering chamber 101 and the transfer chamber 102. The fixed partition 8 has multiple through holes 801, and the movable partition 9 has multiple through holes 901. An extension plate 10 is fixedly connected to the inner wall on the left side. A groove 1001 is provided on the extension plate 10. The left end of the movable partition 9 is located within the groove 1001 and slidably connected thereto. A support frame 1002 is fixedly connected between the bottom surface of the extension plate 10 and the inner wall of the sintering furnace body 1 to enhance the assembly strength of the extension plate 10, thereby improving its service life. An integrally formed mounting box 103 is located on the right end of the sintering furnace body 1. An electric push rod 11 is installed inside the mounting box 103. The electric push rod 11 is equipped with a mechanism for connecting the movable partition 9. The output shaft 12, fixedly connected to the right end of 9, usually has through holes 801 and 901 overlapping, meaning the gas in the circulation chamber 102 can directly enter the sintering chamber 101. During prolonged use, when the heating element 6 ages, its accuracy decreases, causing errors in the temperature compensation data. Ultimately, only when the temperature sensor 7 detects that the gas temperature in the circulation chamber 102 has not reached or exceeded the specified working range of the sintering furnace body 1 will the electric push rod 11 push the movable partition 9, opening the through hole 901. When 901 and through hole 1 801 are misaligned, the gas flow is temporarily stopped, and the heating power of the heating element 6 is temporarily increased or decreased. When the temperature detection sensor 7 detects that the gas temperature in the transfer chamber 102 has reached the specified working range of the sintering furnace body 1, the electric push rod 11 will drive the movable partition 9 to reset, so that through hole 1 801 and through hole 2 901 overlap, thereby preventing excessive temperature fluctuations inside the sintering furnace. If the number of times this occurs increases within a unit of time, personnel can be arranged to check each piece of equipment immediately.

[0029] The connecting pipe 501 is used to monitor the flow rate and temperature of the gas entering the sintering furnace body 1 in real time;

[0030] Heating element 6 is used to automatically adjust the heating power based on the real-time monitored airflow and temperature data in order to achieve temperature compensation of the air at the air inlet.

[0031] Temperature sensor 7 is used to monitor the temperature inside the transfer chamber 102 in real time;

[0032] The electric push rod 11 is used to automatically control the movable partition 9 to make its through hole 901 coincide with the through hole 801 when the temperature sensor 7 detects that the temperature in the transfer chamber 102 has reached the specified working range of the sintering furnace body 1, so as to realize the air supply operation.

[0033] The control system, connected to the aforementioned components, receives data from the connecting pipe 501 and the temperature sensor 7, and controls the heating power of the heating element 6 and the operation of the electric push rod 11 according to a preset algorithm and logic, thereby achieving precise control of the temperature inside the sintering furnace body 1 and efficient utilization of waste heat.

[0034] This solution first improves the existing waste heat recovery device to avoid the direct impact of high-temperature gas on the heat exchange equipment, which can effectively reduce the aging and damage of the heat exchange equipment and thus extend the service life of the equipment. Secondly, it introduces a flow and temperature detection mechanism to monitor the flow and temperature of the gas entering the transfer chamber 102 in real time, so that the heating element 6 can perform temperature compensation in real time, which can significantly reduce the temperature fluctuation inside the sintering chamber 101 and ensure that the coating is cured in a stable temperature environment, thereby optimizing the coating quality and improving the corrosion resistance and durability of the product.

[0035] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A sintering furnace for metal surface treatment, comprising a sintering furnace body (1) and a control system for real-time adjustment of heat and operation of some equipment, characterized in that: The interior of the sintering furnace body (1) is divided into a sintering chamber (101) and a transfer chamber (102). A heat exchange chamber (2) is provided on the left side of the sintering furnace body (1). Waste heat utilization mechanisms are provided in the sintering furnace body (1) and the heat exchange chamber (2). The waste heat utilization mechanism includes an exhaust pipe (3) installed on the top of the sintering furnace body (1), a fan (4) installed on the left side of the heat exchange chamber (2), an air inlet pipe (5) fixedly connected to the output end of the fan (4), the end of the exhaust pipe (3) away from the heat exchange chamber (2) and the end of the air inlet pipe (5) away from the fan (4) both extend into the heat exchange chamber (2), and a connecting pipe (501) fixedly connected to the tail end of the air inlet pipe (5), and the end of the connecting pipe (501) away from the air inlet pipe (5) passes through the heat exchange chamber (2) and extends into the transfer chamber (102); The control system includes an airflow and temperature sensor (502) installed at the head end of the connecting pipe (501), a heating element (6) installed at the end of the connecting pipe (501), a temperature detection sensor (7) installed in the sintering chamber (101), and fixed partitions (8) and movable partitions (9) arranged vertically inside the sintering furnace body (1). The fixed partitions (8) and movable partitions (9) are used to separate the sintering chamber (101) and the transfer chamber (102). The fixed partition (8) has multiple through holes (801). The movable partition (9) has multiple through holes (901). An extension plate (10) is fixedly connected to the inner wall of the left side of the sintering furnace body (1). A sliding groove (1001) is provided on the extension plate (10). The left end of the movable partition (9) is located in the sliding groove (1001) and is slidably connected thereto. An installation box (103) is integrally formed on the right end of the sintering furnace body (1). An electric push rod (11) is installed in the installation box (103). An output shaft (12) is provided on the electric push rod (11) and is fixedly connected to the right end of the movable partition (9).

2. The sintering furnace for metal surface treatment according to claim 1, characterized in that: The heat exchange chamber (2) is covered with insulation material, and the exhaust pipe (3) is covered with insulation material at one end outside the heat exchange chamber (2). The insulation material is rock wool.

3. A sintering furnace for metal surface treatment according to claim 1, characterized in that: The exhaust pipe (3) and the air inlet pipe (5) are arranged in a double spiral shape in the heat exchange chamber (2), and the part where the two are in contact with each other is made of a high thermal conductivity material.

4. A sintering furnace for metal surface treatment according to claim 1, characterized in that: A support frame (1002) is fixedly connected between the bottom surface of the extension plate (10) and the inner wall of the sintering furnace body (1).

5. A sintering furnace for metal surface treatment according to claim 1, characterized in that: The connecting pipe (501) is used to monitor the flow rate and temperature of the gas entering the sintering furnace body (1) in real time; The heating element (6) is used to automatically adjust the heating power according to the real-time monitored air flow and temperature data in order to achieve temperature compensation of the air at the air inlet. The temperature sensor (7) is used to monitor the temperature inside the transfer chamber (102) in real time; The electric push rod (11) is used to automatically control the movable partition (9) to make its through hole two (901) coincide with through hole one (801) when the temperature detection sensor (7) detects that the temperature in the transfer chamber (102) has reached the specified working range of the sintering furnace body (1), so as to realize the air supply operation. The control system is connected to the aforementioned air flow and temperature sensor (502), heating element (6), temperature detection sensor (7), and electric push rod (11). It is used to receive data from the air flow and temperature sensor (502) and the temperature detection sensor (7), and to control the heating power of the heating element (6) and the operation of the electric push rod (11) according to the preset logic, thereby realizing precise control of the temperature inside the sintering furnace body (1) and efficient utilization of waste heat.

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