Circulating fan water cooling structure of ultra-deep well type nitriding furnace
By adopting a circulating fan water-cooled structure in the ultra-deep well nitriding furnace, including cooling and heat insulation devices, the problem of insufficient heat dissipation of fan components is solved, and the workpiece processing efficiency and production quality are improved.
Patent Information
- Application Number
- CN202420352379.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The existing well-type nitriding furnace design does not have a structure for cooling of fan components, which causes the fan components to fail due to insufficient heat dissipation after a long period of time, which in turn leads to uneven temperature distribution in the furnace, affecting the heat treatment effect and product quality of the workpiece.
The circulating fan water-cooled structure of an ultra-deep well nitriding furnace is adopted, including an impeller and a drive device. The side of the drive device is equipped with a water inlet and a water outlet, and is equipped with a cooling device and a heat insulation device to take away the heat generated by the drive device through the cooling water, and heat is blocked from being transferred to the impeller and the furnace through the insulation material.
It effectively solves the problem of insufficient heat dissipation of fan components, ensures the continuous operation of the drive device and impeller, improves the workpiece processing efficiency and production quality, and reduces the difficulty of subsequent cooling work in the furnace.
Smart Images
Figure CN222540851U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nitriding furnaces, in particular to a circulating fan water cooling structure of an ultra-deep well type nitriding furnace. Background Art
[0002] The pit nitriding furnace is a new type of energy-saving cycle operation heat treatment electric furnace, which is mainly used for gas nitriding of steel parts. It is widely used because of its advantages of uniform furnace temperature, fast heating, good heat preservation, uniform nitriding layer and high production efficiency.
[0003] The working process of the pit nitriding furnace is to fix the workpiece to be processed in the furnace body; heat the furnace body and the workpiece through the heating element; after the workpiece reaches the required heating temperature, turn on the nitriding system and introduce ammonia. At high temperature, the ammonia decomposes active nitrogen atoms and reacts with the metal surface, forming a nitride layer with higher hardness on the metal surface through penetration; after the nitriding treatment is completed, turn off the heating element and the nitriding system, gradually reduce the temperature in the furnace, cool the workpiece to a suitable temperature, and complete the treatment of the workpiece.
[0004] In the process of heating the workpiece and introducing ammonia, a fan assembly is usually set up to keep the temperature consistent throughout the furnace. After the fan is started, it drives the gas to circulate in the furnace, so as to achieve a consistent temperature throughout the furnace. The continuously working fan assembly will also generate a lot of heat. The existing pit nitriding furnace design does not have a structure or device to cool the fan assembly. The fan assembly that cannot dissipate heat will malfunction after long-term use, causing the fan assembly to go on strike. This means that when the pit nitriding furnace is working, there is no fan assembly in the furnace to circulate the airflow, which leads to uneven temperature distribution in the furnace, resulting in uneven heat treatment effects on the workpiece, thus affecting product quality. Utility Model Content
[0005] In order to solve the problems in the related art, the present application provides a circulating fan water cooling structure for an ultra-deep well nitriding furnace, which solves the problem that the fan component cannot dissipate heat.
[0006] The technical solution is as follows:
[0007] The circulating fan water cooling structure of the ultra-deep well nitriding furnace comprises an impeller and a driving device for driving the impeller to rotate, the driving device and the impeller are connected by a connecting device, and the driving device is characterized in that a water inlet and a water outlet are spaced apart on the side of the driving device, and the water inlet is arranged below the water outlet, and a cooling device is arranged on the driving device, one end of the cooling device is connected to the water inlet, and the other end of the cooling device is connected to the water outlet;
[0008] A heat insulating device is sleeved along the length direction of the connecting device, and the diameter of the heat insulating device is not less than the diameter of the impeller.
[0009] Through the above technical solution, by setting the cooling device, when the driving device drives the impeller to rotate, the water inlet is connected to the external cooling water, and the cooling water flows out from the water outlet after passing through the cooling device. In this process, the flowing cooling water takes away the heat generated when the driving device is running, thereby reducing the temperature of the driving device, ensuring that the driving device can continuously drive the impeller to rotate, thereby improving the workpiece processing efficiency and production quality;
[0010] By setting up the heat insulation device, most of the heat generated during the operation of the driving device can be blocked, so that the heat generated when the driving device is in use will no longer be transferred to the impeller or the nitriding furnace, and will not affect the temperature in the furnace, thereby reducing the workload and difficulty of subsequent cooling work in the furnace, thereby improving the workpiece processing efficiency.
[0011] Furthermore, the side of the heat insulation device close to the impeller is arranged in an arc shape;
[0012] The thermal insulation device includes a connecting block, a supporting structure and a thermal insulation material. The connecting block is fixedly connected to one end of the driving device close to the impeller by bolts. The supporting structure is welded to the bottom of the connecting block. The diameter of the supporting structure is consistent with the diameter of the impeller. A first strip hole suitable for the connecting device is opened in the middle of the supporting structure. The connection between the supporting structure and the connecting device is fixedly connected by welding, and the thermal insulation material is arranged in the supporting structure.
[0013] Through the above technical solution, by making the end of the insulation device close to the impeller have an arc, during the rotation process, the arc-shaped support structure can better guide the air flow, reduce the turbulence and separation of the air flow, and thus reduce the wind resistance. Then the impact on the impeller rotation will be greatly reduced, thereby effectively ensuring the workpiece processing efficiency and quality.
[0014] Furthermore, the driving device comprises a motor and a connecting shell, the motor is arranged at a middle position in the connecting shell, and the cooling device is evenly distributed along the inner wall surface of the connecting shell.
[0015] Furthermore, the cooling device comprises a cooling interlayer arranged along the outer periphery of the motor, the cooling interlayer is connected to the water inlet through a water inlet pipe, and the cooling interlayer is connected to the water outlet through a drain pipe;
[0016] The water inlet pipe is provided with a quick connection mechanism, which includes a clamp and a fastener. The clamp is arranged in a "C" shape on the outer periphery of the water inlet pipe, and a sealing ring is arranged on the contact surface between the clamp and the water inlet pipe. The opening in the clamp is symmetrically provided with gasket lips with the same structure, each gasket lip is provided with a threaded hole, and the threaded hole and the outer periphery of the fastener are matched. The fastener passes through the threaded holes in turn, so that the clamp and the outer periphery of the water inlet pipe are tightly matched. A quick-tightening block is fixedly installed on the upper end of the fastener, and a hole is provided on the quick-tightening block.
[0017] Through the above technical scheme, through the setting of the quick-connect mechanism and by adjusting the fasteners, the clamp can tightly connect the water inlet pipe and the external tap water pipe, thereby achieving direct communication with the external tap water, ensuring that when the cooling device is in use, the cooling water can quickly enter the cooling interlayer to perform cooling work, with a simple structure and convenient operation; through the setting of the quick-tightening block, the adjustment of the fasteners is more labor-saving and convenient, thereby improving efficiency.
[0018] Furthermore, the connecting device comprises a shaft, one end of which is fixedly connected to the shaft hole at the center of the impeller, and the other end of the shaft is fixedly connected to the shaft hole on the motor.
[0019] Furthermore, a fiber layer is arranged along the outer periphery of the support structure, and an adhesive tape is wrapped around the outer periphery of the fiber layer.
[0020] Through the above technical solution, by arranging a fiber layer and a tape layer on the outer periphery of the supporting structure, the thermal insulation effect of the thermal insulation device is further improved, and the influence of the temperature change of the subsequent nitriding furnace is reduced, thereby accelerating the production efficiency and quality of the workpiece.
[0021] In summary, the beneficial effects of the circulating fan water cooling structure of the ultra-deep pit nitriding furnace are:
[0022] 1. Through the setting of the cooling device, when the driving device drives the impeller to rotate, the water inlet is connected to the external cooling water, and the cooling water flows out from the water outlet after passing through the cooling device. In this process, the flowing cooling water takes away the heat generated by the driving device during operation, thereby reducing the temperature of the driving device, ensuring that the driving device can continuously drive the impeller to rotate, thereby improving the workpiece processing efficiency and production quality;
[0023] By setting up the heat insulation device, most of the heat generated during the operation of the driving device can be blocked, so that the heat generated during the use of the driving device will no longer be transferred to the impeller, nor will it be transferred to the nitriding furnace, and will not affect the temperature in the furnace, thereby reducing the workload and difficulty of subsequent furnace cooling work, thereby improving the workpiece processing efficiency;
[0024] 2. By making the end of the heat insulation device close to the impeller have an arc, during the rotation process, the arc-shaped support structure can better guide the air flow, reduce the turbulence and separation of the air flow, and thus reduce the wind resistance. Then the impact on the impeller rotation will be greatly reduced, thereby effectively ensuring the workpiece processing efficiency and quality;
[0025] 3. Through the setting of the quick-connect mechanism and the adjustment of the fasteners, the clamp tightly connects the water inlet pipe and the external tap water pipe, so as to achieve direct communication with the external tap water, and ensure that when the cooling device is used, the cooling water can quickly enter the cooling interlayer for cooling work, with a simple structure and convenient operation; through the setting of the quick-tightening block, the adjustment of the fasteners is more labor-saving and convenient, thereby improving efficiency;
[0026] 4. By arranging a fiber layer and a tape layer on the outer periphery of the support structure, the thermal insulation effect of the thermal insulation device is further improved, reducing the impact of temperature changes in the subsequent nitriding furnace, thereby accelerating the production efficiency and quality of the workpiece.
[0027] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.
[0029] Figure 1 It is a structural schematic diagram of the circulating fan water cooling structure of the ultra-deep well nitriding furnace;
[0030] Figure 2 It is a cross-sectional view of a cooling device in a circulating fan water cooling structure of an ultra-deep well nitriding furnace;
[0031] Figure 3 It is a structural schematic diagram of the quick-connect mechanism in the circulating fan water-cooling structure of the ultra-deep well nitriding furnace;
[0032] In the figure, 1, impeller; 2, driving device; 21, motor; 22, connecting shell; 3, connecting device; 4, cooling device; 5, insulation device; 51, connecting block; 52, supporting structure; 53, insulation material; 6, fiber layer; 7, tape; 8, quick connection mechanism; 81, clamp; 82, fastener; 9, water outlet; 10, gasket lip; 11, quick tightening block. DETAILED DESCRIPTION
[0033] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices and methods consistent with some aspects of the utility model as detailed in the attached claims.
[0034] In a possible embodiment, as shown in the attached Figure 1-3 As shown, the circulating fan water-cooling structure of the ultra-deep pit nitriding furnace includes an impeller 1 and a driving device 2 for driving the impeller 1 to rotate, the driving device 2 includes a motor 21 and a connecting shell 22, the motor 21 is arranged in the middle position of the connecting shell 22, the cooling device 4 is evenly distributed along the outer wall of the motor 21, the driving device 2 and the impeller 1 are connected by a connecting device 3, the connecting device 3 includes a shaft, one end of the shaft is fixedly connected to the shaft hole in the center of the impeller 1, and the other end of the shaft is fixedly connected to the shaft hole on the motor 21. After the motor 21 is started, the impeller 1 is driven to rotate synchronously through the shaft;
[0035] A water inlet and a water outlet 9 are provided at intervals on the side of the driving device 2, and the water inlet is arranged below the water outlet 9. A cooling device 4 is provided on the driving device 2, one end of the cooling device 4 is connected to the water inlet, and the other end of the cooling device 4 is connected to the water outlet 9. The cooling device 4 includes a cooling interlayer provided along the outer periphery of the motor 21, the cooling interlayer is connected to the water inlet through a water inlet pipe, and the cooling interlayer is connected to the water outlet 9 through a drain pipe;
[0036] A quick-connect mechanism 8 is provided on the water inlet pipe, and the quick-connect mechanism 8 includes a clamp 81 and a fastener 82. The clamp 81 is arranged in a "C" shape on the outer periphery of the water inlet pipe, and a sealing ring is arranged on the contact surface between the clamp 81 and the water inlet pipe. The opening in the clamp 81 is symmetrically provided with a gasket lip 10 with the same structure. A threaded hole is provided on each gasket lip 10, and the threaded hole and the outer periphery of the fastener 82 are matched. The fastener 82 passes through the threaded holes in sequence, so that the clamp 81 and the outer periphery of the water inlet pipe are closely matched. A quick-tightening block 11 is fixedly installed on the upper end of the fastener 82, and a hole is provided on the quick-tightening block 11. During the processing of the workpiece in the nitriding furnace, the driving device 2 drives the impeller 1 to rotate to make the airflow in the furnace uniform, and the water inlet is connected to the external cooling Water, by tightening the quick-tightening block 11, the fastener 82 moves upward to loosen the clamp 81, adjust the position of the sealing ring to cover the connection between the water inlet pipe and the external tap water pipe, and tighten the quick-tightening block 11 again to move the fastener 82 downward until the clamp 81 firmly fixes the water inlet pipe and the external tap water pipe to achieve a quick direct connection with external tap water. The structure is simple, the operation is simple and fast, and the cost is low. The cooling water flows out from the water outlet 9 after passing through the cooling interlayer 43 in the cooling device 4. In this process, the flowing cooling water takes away the heat generated by the motor 21 during operation, thereby reducing the temperature inside the driving device 2, ensuring that the motor 21 can continuously drive the impeller 1 to rotate, thereby improving the workpiece processing efficiency and production quality.
[0037] A heat insulating device 5 is sleeved along the length direction of the connecting device 3. The diameter of the heat insulating device 5 is not less than the diameter of the impeller 1. The side of the heat insulating device 5 close to the impeller 1 is arranged in an arc shape. The heat insulating device 5 includes a connecting block 51, a supporting structure 52 and a heat insulating material 53. The connecting block 51 is fixedly connected to the end of the driving device 2 close to the impeller 1 by bolts. The supporting structure 52 is welded to the bottom of the connecting block 51. The diameter of the supporting structure 52 is consistent with the diameter of the impeller 1. A first strip hole suitable for the connecting device 3 is opened in the middle of the supporting structure 52. The connection between the supporting structure 52 and the connecting device 3 is fixedly connected by welding. The heat insulating material 53 is arranged in the supporting structure 52. The connection between 52 and the shaft is welded, so it will rotate synchronously with the shaft. The heat insulation device 5 can block most of the heat generated during the operation of the driving device 2, so that the heat generated during the use of the driving device 2 will no longer be transferred to the impeller 1, nor will it be transferred to the nitriding furnace, and will not affect the temperature in the furnace, thereby reducing the workload and difficulty of subsequent cooling work in the furnace, thereby improving the workpiece processing efficiency; and the design of the arc in the support structure 52, during the rotation process, the arc-shaped support structure 52 can better guide the air flow, reduce the turbulence and separation of the air flow, and thus reduce the wind resistance, so the impact on the rotation of the impeller 1 will be greatly reduced, thereby effectively ensuring the workpiece processing efficiency and quality;
[0038] A fiber layer 6 is arranged along the outer periphery of the support structure 52, and a tape 7 is wrapped around the outer periphery of the fiber layer 6. The fibers in the fiber layer 6 are compressed, and the fiber layer 6 is tightly fixed by the tape 7. The fiber layer 6 and the tape 7 can further improve the thermal insulation effect of the thermal insulation device 5 and reduce the impact on the temperature change of the subsequent nitriding furnace, thereby accelerating the production efficiency and quality of the workpiece.
[0039] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not present in the present invention. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present invention are indicated by the appended claims.
[0040] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
Claims
1. A circulating fan water-cooling structure of an ultra-deep pit nitriding furnace, comprising an impeller and a driving device for driving the impeller to rotate, wherein the driving device and the impeller are connected via a connecting device, characterized in that: A water inlet and a water outlet are provided at intervals on the side of the driving device, and the water inlet is arranged below the water outlet. A cooling device is provided on the driving device, one end of the cooling device is connected to the water inlet, and the other end of the cooling device is connected to the water outlet. A heat insulating device is sleeved along the length direction of the connecting device, and the diameter of the heat insulating device is not less than the diameter of the impeller.
2. The circulating fan water cooling structure of the ultra-deep pit nitriding furnace according to claim 1 is characterized in that: The side of the heat insulation device close to the impeller is arranged in an arc shape; The thermal insulation device includes a connecting block, a supporting structure and a thermal insulation material. The connecting block is fixedly connected to one end of the driving device close to the impeller by bolts. The supporting structure is welded to the bottom of the connecting block. The diameter of the supporting structure is consistent with the diameter of the impeller. A first strip hole suitable for the connecting device is opened in the middle of the supporting structure. The connection between the supporting structure and the connecting device is fixedly connected by welding, and the thermal insulation material is arranged in the supporting structure.
3. The circulating fan water cooling structure of the ultra-deep pit nitriding furnace according to claim 1 is characterized in that: The driving device comprises a motor and a connecting shell. The motor is arranged at a middle position in the connecting shell. The cooling device is evenly distributed along the outer wall surface of the motor.
4. The circulating fan water cooling structure of the ultra-deep pit nitriding furnace according to claim 3 is characterized in that: The cooling device comprises a cooling interlayer arranged along the outer periphery of the motor, the cooling interlayer is connected to the water inlet through a water inlet pipe, and the cooling interlayer is connected to the water outlet through a drain pipe; The water inlet pipe is provided with a quick connection mechanism, which includes a clamp and a fastener. The clamp is arranged in a "C" shape on the outer periphery of the water inlet pipe, and a sealing ring is arranged on the contact surface between the clamp and the water inlet pipe. The opening in the clamp is symmetrically provided with gasket lips with the same structure, each gasket lip is provided with a threaded hole, and the threaded hole and the outer periphery of the fastener are matched. The fastener passes through the threaded holes in turn, so that the clamp and the outer periphery of the water inlet pipe are tightly matched. A quick-tightening block is fixedly installed on the upper end of the fastener, and a hole is provided on the quick-tightening block.
5. The circulating fan water cooling structure of the ultra-deep pit nitriding furnace according to claim 3 is characterized in that: The connecting device comprises a shaft, one end of which is fixedly connected to the shaft hole at the center of the impeller, and the other end of the shaft is fixedly connected to the shaft hole on the motor.
6. The circulating fan water cooling structure of the ultra-deep pit nitriding furnace according to claim 2 is characterized in that: A fiber layer is arranged along the outer periphery of the support structure, and an adhesive tape is wound around the outer periphery of the fiber layer.