Circulating cooling device for nitriding furnace

Abstract

The utility model discloses a circulating cooling device of nitriding furnace relates to nitriding furnace technical field, including fixed plate, the top fixed mounting of fixed plate has nitriding furnace body, the inside of nitriding furnace body is provided with water cooling mechanism, water cooling mechanism includes spiral pipe and water tank, the fixed connection of spiral pipe's outer wall and nitriding furnace body inner wall's bottom, one side fixed mounting of water tank has semiconductor refrigeration piece, the fixed mounting of water tank's inner wall has water pump, the output of water pump is linked with the delivery pipe, and one side of delivery pipe in proper order penetrates water tank and the outer wall of nitriding furnace body and extends to the inside of nitriding furnace body. The utility model discloses through setting up spiral pipe, water pump and delivery pipe, spiral pipe sticks to nitriding furnace inner wall, increases the cooling contact area, and cooperates water pump drive coolant circulation, and cooling is quick and even, and semiconductor refrigeration piece assists water tank temperature control, and again collocates the air cooling mechanism and forms water cooling and air cooling double cooling.

Description

Technical Field

[0001] This utility model relates to the field of nitriding furnace technology, specifically a circulating cooling device for a nitriding furnace. Background Technology

[0002] A nitriding furnace is a device used for nitriding workpieces. It features low processing temperature, short processing time, and minimal workpiece deformation. The principle of nitriding is as follows: the workpiece is placed into the nitriding furnace, the air in the furnace is first vented out, then ammonia gas is introduced into the furnace for heating, and then the furnace is cooled using a cooling device.

[0003] In existing technologies, most traditional devices only use a single water cooling or air cooling mode. Water cooling devices often suffer from small cooling contact area due to unreasonable pipe layout, such as straight pipe design, resulting in uneven local cooling of the furnace body and easily causing defects such as cracks and hardness deviations in the workpiece. Air cooling devices often suffer from scattered fan layout, chaotic airflow distribution, obvious heat dissipation dead zones, and low cooling efficiency. Therefore, a circulating cooling device for nitriding furnace is proposed to solve the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a circulating cooling device for a nitriding furnace. Through the cooperation of an air-cooling mechanism and a water-cooling mechanism, a dual cooling system of water cooling and air cooling is achieved, which can quickly remove the high temperature inside the nitriding furnace.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circulating cooling device for a nitriding furnace, comprising a fixed plate, a nitriding furnace body fixedly mounted on the top of the fixed plate, a water cooling mechanism provided inside the nitriding furnace body, the water cooling mechanism comprising a spiral tube and a water tank, the outer wall of the spiral tube being fixedly connected to the bottom of the inner wall of the nitriding furnace body, a semiconductor cooling chip fixedly mounted on one side of the water tank, a water pump fixedly mounted on the inner wall of the water tank, the output end of the water pump being connected to a delivery pipe, one side of the delivery pipe sequentially penetrating the water tank and the outer wall of the nitriding furnace body and extending into the interior of the nitriding furnace body, and one side of the delivery pipe being connected to one side of the spiral tube; The top of the nitriding furnace body is equipped with an air-cooling mechanism.

[0006] As a preferred embodiment of this utility model, a support frame is fixedly connected to the top of the fixing plate, and the top of the support frame is fixedly connected to the bottom of the water tank.

[0007] As a preferred embodiment of this utility model, the air-cooling mechanism includes a top cover, the bottom of which contacts the top of the nitriding furnace body. Both the interior of the nitriding furnace body and the interior of the top cover are provided with screw holes, and bolts are threaded into the screw holes. The interior of the nitriding furnace body and the interior of the top cover are detachably connected by bolts.

[0008] As a preferred embodiment of this utility model, the top cover has an internal mounting groove, and there are two sets of mounting grooves. A cooling fan assembly is fixedly installed inside the mounting groove.

[0009] As a preferred embodiment of this utility model, a connecting column is fixedly connected to the bottom of the top cover, and a cavity is formed inside the connecting column.

[0010] As a preferred embodiment of this utility model, a scraper ring is fixedly connected to one side of the connecting column, the outer wall of the scraper ring is in contact with the inner wall of the nitriding furnace body, and a collection groove is provided on the inner wall of the scraper ring.

[0011] As a preferred embodiment of this invention, the connecting column has a groove inside, and the outer wall of the groove is in contact with the outer wall of the conveying pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model sets up a spiral tube, a water pump and a delivery pipe. The spiral tube fits into the inner wall of the nitriding furnace to increase the cooling contact area. With the water pump driving the coolant circulation, the temperature drops quickly and evenly. The semiconductor refrigeration chip assists in the temperature control of the water tank. Combined with the air cooling mechanism, it forms a dual cooling system of water cooling and air cooling, which can quickly remove the high temperature inside the nitriding furnace.

[0013] 2. This utility model features a cooling fan system with two sets of cooling fans operating synchronously, resulting in stronger airflow that can quickly expel hot air from the nitriding furnace and accelerate furnace cooling. The mounting slot allows for the installation and positioning of the cooling fans, preventing them from shaking or shifting during operation, and ensuring a more uniform distribution of the air-cooled airflow. This, in conjunction with the water-cooling mechanism, improves the overall cooling efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the nitriding furnace body; Figure 3 This is a schematic diagram of the water-cooling mechanism. Figure 4 This is a schematic diagram of the air-cooling mechanism.

[0015] In the diagram: 1. Fixing plate; 2. Nitriding furnace body; 3. Spiral tube; 4. Water tank; 5. Semiconductor cooling chip; 6. Water pump; 7. Delivery pipe; 8. Support frame; 9. Top cover; 10. Screw hole; 11. Bolt; 12. Mounting groove; 13. Cooling fan assembly; 14. Connecting column; 15. Cavity; 16. Scraper ring; 17. Collection tank; 18. Slide groove. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0020] Example 1 Reference Figure 1-4 This is the first embodiment of the present invention, which provides a circulating cooling device for a nitriding furnace, including a fixed plate 1, a nitriding furnace body 2 fixedly installed on the top of the fixed plate 1, a water cooling mechanism provided inside the nitriding furnace body 2, the water cooling mechanism including a spiral tube 3 and a water tank 4, the outer wall of the spiral tube 3 and the bottom of the inner wall of the nitriding furnace body 2 fixedly connected, a semiconductor cooling chip 5 fixedly installed on one side of the water tank 4, a water pump 6 fixedly installed on the inner wall of the water tank 4, the output end of the water pump 6 connected to a conveying pipe 7, one side of the conveying pipe 7 passing through the water tank 4 and the outer wall of the nitriding furnace body 2 and extending into the interior of the nitriding furnace body 2, and one side of the conveying pipe 7 connected to one side of the spiral tube 3; The top of the nitriding furnace body 2 is equipped with an air-cooling mechanism; A support frame 8 is fixedly connected to the top of the fixed plate 1, and the top of the support frame 8 is fixedly connected to the bottom of the water tank 4.

[0021] Specifically, by setting up a spiral tube 3, a water pump 6, and a delivery pipe 7, the spiral tube 3 fits against the inner wall of the nitriding furnace to increase the cooling contact area. Combined with the water pump 6 to drive the coolant circulation, the temperature drops quickly and evenly. The semiconductor cooling chip 5 assists the water tank 4 in temperature control, and together with the air cooling mechanism, a dual cooling system of water cooling and air cooling is formed, which can quickly remove the high temperature inside the nitriding furnace. The support frame 8 supports the water tank 4 to prevent the water tank 4 from shaking due to the operation of the water pump 6 or external forces, and to ensure the sealing of the connection between the delivery pipe 7 and the spiral pipe 3. Bolt 11 enables the top cover 9 to be detachably connected to the nitriding furnace through screw hole 10. No special tools are required for disassembly and assembly, which facilitates subsequent maintenance of the cooling fan assembly 13 or cleaning of the inside of the nitriding furnace. The connection is firm and prevents the top cover 9 from loosening during the cooling process, which would lead to a decrease in air cooling effect.

[0022] Furthermore, the water cooling mechanism is first activated. The semiconductor cooling chip 5 inside the water tank 4 pre-cools the coolant. Then, the water pump 6 on the inner wall of the water tank 4 is activated, and the water pump 6 delivers the cooled coolant to the inside of the nitriding furnace body 2 through the delivery pipe 7. The coolant enters the spiral tube 3 that is attached to the bottom of the inner wall of the nitriding furnace body 2. The spiral tube 3 increases the contact area with the furnace wall, quickly absorbing the heat generated during the operation of the nitriding furnace. After absorbing heat, the coolant flows back to the water tank 4 along the pipe, forming a closed-loop cooling cycle to continuously cool the nitriding furnace.

[0023] Example 2 The second embodiment of this utility model provides a circulating cooling device for a nitriding furnace. The air-cooling mechanism includes a top cover 9, the bottom of the top cover 9 is in contact with the top of the nitriding furnace body 2, and screw holes 10 are provided inside the nitriding furnace body 2 and the top cover 9. Bolts 11 are threaded inside the screw holes 10, and the interior of the nitriding furnace body 2 and the interior of the top cover 9 are detachably connected by bolts 11. The top cover 9 has an internal mounting slot 12. There are two sets of mounting slots 12. A cooling fan assembly 13 is fixedly installed inside the mounting slot 12. A connecting post 14 is fixedly connected to the bottom of the top cover 9, and a cavity 15 is opened inside the connecting post 14; A scraper ring 16 is fixedly connected to one side of the connecting column 14. The outer wall of the scraper ring 16 contacts the inner wall of the nitriding furnace body 2. A collection groove 17 is provided on the inner wall of the scraper ring 16. The connecting column 14 has a groove 18 inside, and the outer wall of the groove 18 is in contact with the outer wall of the conveying pipe 7.

[0024] Specifically, by setting up cooling fans, two sets of cooling fan groups 13 operate synchronously, with stronger airflow, which can quickly expel the hot airflow in the nitriding furnace and accelerate the cooling inside the furnace; the mounting slot 12 can install and position the cooling fans to prevent them from shaking or shifting during operation, making the air-cooled airflow distribution more uniform, and working together with the water-cooling mechanism to improve the overall cooling efficiency. The cavity 15 of the connecting column 14 can guide the air-cooled airflow downward to spread more evenly and cover the inside of the nitriding furnace, avoiding local dead air zones; at the same time, the cavity 15 can provide space for related components without affecting the normal use of the nitriding furnace. When the scraper ring 16 is disassembled or adjusted along with the top cover 9, it can simultaneously scrape off the impurities or deposits attached to the inner wall of the nitriding furnace. The collection tank 17 collects the scraped debris, reducing the amount of manual cleaning work in the future. Moreover, the scraper ring 16 fits tightly against the furnace wall and does not affect the sealing performance of the nitriding furnace. The chute 18 limits and guides the delivery pipe 7, preventing it from shifting or bending due to equipment vibration or external force, thus ensuring smooth coolant delivery; at the same time, it reduces friction between the delivery pipe 7 and other components.

[0025] Furthermore, while the water cooling cycle is in operation, the air cooling mechanism is activated to enhance the cooling effect. The cooling fan groups 13 in the two sets of mounting slots 12 inside the top cover 9 operate synchronously. The generated cooling airflow diffuses downward through the cavity 15 of the connecting column 14, evenly covering the internal space of the nitriding furnace, and quickly expelling the hot airflow inside the furnace. This works in synergy with the water cooling mechanism to significantly improve the overall cooling efficiency.

[0026] Working principle: First, the water cooling system is activated. The semiconductor cooling chip 5 inside the water tank 4 pre-cools the coolant. Then, the water pump 6 inside the water tank 4 is activated, and the water pump 6 delivers the cooled coolant through the delivery pipe 7 to the inside of the nitriding furnace body 2. The coolant enters the spiral tube 3 that is attached to the bottom of the inner wall of the nitriding furnace body 2. The spiral tube 3 increases the contact area with the furnace wall, quickly absorbing the heat generated during the operation of the nitriding furnace. After absorbing heat, the coolant flows back to the water tank 4 through the pipe, forming a closed-loop cooling cycle to continuously cool the nitriding furnace.

[0027] While the water cooling cycle is in operation, the air cooling mechanism is activated to enhance the cooling effect. The cooling fan groups 13 in the two sets of mounting slots 12 inside the top cover 9 operate synchronously. The generated cooling airflow diffuses downward through the cavity 15 of the connecting column 14, evenly covering the internal space of the nitriding furnace, and quickly expelling the hot airflow inside the furnace. This works in synergy with the water cooling mechanism to significantly improve the overall cooling efficiency.

[0028] When the inside of the nitriding furnace needs to be cleaned, during the disassembly of the top cover 9, the scraper ring 16 on one side of the connecting column 14 will scrape off the attached impurities or deposits against the furnace wall. The scraped debris falls into the collection groove 17 on the inner wall of the scraper ring 16 and is collected in a concentrated manner, reducing the amount of manual cleaning work afterwards.

[0029] In summary, by combining the air-cooling and water-cooling mechanisms, a dual cooling system of water and air is achieved, which can quickly remove the high temperature inside the nitriding furnace.

[0030] The circulating cooling device for the nitriding furnace used in this application can be additionally equipped with protective measures known in the art under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, etc., which are commonly used by those skilled in the art.

[0031] It should be noted that the nitriding furnace body 2, spiral tube 3, semiconductor cooling chip 5, water pump 6, and cooling fan assembly 13 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are all common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0032] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0033] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0034] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A circulating cooling device for a nitriding furnace, characterized in that: The system includes a fixed plate (1), on the top of which a nitriding furnace body (2) is fixedly installed. The interior of the nitriding furnace body (2) is equipped with a water cooling mechanism, which includes a spiral tube (3) and a water tank (4). The outer wall of the spiral tube (3) is fixedly connected to the bottom of the inner wall of the nitriding furnace body (2). A semiconductor cooling chip (5) is fixedly installed on one side of the water tank (4). A water pump (6) is fixedly installed on the inner wall of the water tank (4). The output end of the water pump (6) is connected to a delivery pipe (7). One side of the delivery pipe (7) passes through the water tank (4) and the outer wall of the nitriding furnace body (2) and extends into the interior of the nitriding furnace body (2). One side of the delivery pipe (7) is connected to one side of the spiral tube (3). The top of the nitriding furnace body (2) is equipped with an air-cooling mechanism.

2. The circulating cooling device for a nitriding furnace according to claim 1, characterized in that: The top of the fixed plate (1) is fixedly connected to a support frame (8), and the top of the support frame (8) is fixedly connected to the bottom of the water tank (4).

3. The circulating cooling device for a nitriding furnace according to claim 1, characterized in that: The air-cooling mechanism includes a top cover (9), the bottom of which contacts the top of the nitriding furnace body (2). Both the interior of the nitriding furnace body (2) and the interior of the top cover (9) are provided with screw holes (10). Bolts (11) are threaded into the interior of the screw holes (10). The interior of the nitriding furnace body (2) and the interior of the top cover (9) are detachably connected by bolts (11).

4. The circulating cooling device for a nitriding furnace according to claim 3, characterized in that: The top cover (9) has an installation slot (12) inside. There are two sets of installation slots (12), and a cooling fan group (13) is fixedly installed inside the installation slot (12).

5. The circulating cooling device for a nitriding furnace according to claim 4, characterized in that: The bottom of the top cover (9) is fixedly connected to a connecting column (14), and the connecting column (14) has a cavity (15) inside.

6. The circulating cooling device for a nitriding furnace according to claim 5, characterized in that: A scraper ring (16) is fixedly connected to one side of the connecting column (14). The outer wall of the scraper ring (16) is in contact with the inner wall of the nitriding furnace body (2). A collection groove (17) is provided on the inner wall of the scraper ring (16).

7. A circulating cooling device for a nitriding furnace according to claim 6, characterized in that: The connecting column (14) has a groove (18) inside, and the outer wall of the groove (18) is in contact with the outer wall of the conveying pipe (7).

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