Nitriding furnace cooling device

Abstract

The utility model discloses a nitrogenization furnace cooling device, including base, the top fixed mounting of base has the cooling shell, is provided with nitrogenization furnace in the inside of cooling shell, is provided with cooling pipe between cooling shell and nitrogenization furnace, and cooling pipe passes through the inner wall of cooling shell and extends to the outside and is connected with water pump, and water pump installs at the top of base, the top fixed mounting of base has the mounting seat, and one end fixed mounting of mounting seat has the storage tank, and the bottom fixed connection of storage tank has the connecting pipe, and the bottom of connecting pipe is fixedly connected with cooling pipe. When working, through water pump extraction external water source through cooling pipe connection and is transported to the interlayer of cooling shell and nitrogenization furnace, thereby carries out the cooling to nitrogenization furnace, and in the process of cooling water delivery, the scale inhibitor is transported to the inside of cooling pipe through connecting pipe, and the scale inhibitor mixes with cooling water, realizes the effect of inhibiting scale formation, maintains the heat exchange efficiency, thereby reduces the shutdown maintenance, promotes production continuity.

Description

Technical Field

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

[0002] Nitriding is a heat treatment technology that uses high-temperature nitriding to form a high-hardness, wear-resistant, and corrosion-resistant nitrided layer on a metal surface. It is widely used in high-end manufacturing fields such as automotive parts, molds, and aerospace. The nitriding furnace, as a core piece of equipment, directly affects the surface quality and performance stability of the workpiece due to its precise temperature control.

[0003] A search revealed a patent, CN216337910U, for example, a cooling device for a nitriding furnace. The device includes a base, a cooling shell and a nitriding furnace body fixedly connected to one side of the base, a cooling chamber inside the base, a drain pipe fixedly connected to one side of the base, a water pump fixedly connected to one end of the drain pipe, and a water supply pipe fixedly connected to the outlet of the water pump. The advantages of this invention are: through the coordinated arrangement of the drain pipe, water pump, water supply pipe, five-way pipe, branch pipe, nozzle, cooling pipe, heat dissipation pipe, heat dissipation holes, and heat dissipation fan, the cooling device can simultaneously perform air cooling and water cooling of the nitriding furnace body, ensuring the cooling effect of the device and resulting in a better cooling effect on the nitriding furnace body. This allows for rapid cooling of the nitriding furnace body, accelerating the cooling speed and improving the cooling efficiency of the nitriding furnace.

[0004] Currently, in traditional water-cooled cooling systems for nitriding furnaces, circulating water flows within a jacket, carrying away heat through forced convection. While traditional water-cooling systems offer advantages such as simple structure and low cost, calcium and magnesium ions in the circulating cooling water easily precipitate and form scale under high temperatures (>60℃). This scale adheres to the inner surface of the furnace wall or the inner walls of the cooling pipes, forming an insulation layer that reduces the heat transfer coefficient by 30%-50%. Therefore, periodic shutdowns for cleaning are necessary, impacting production continuity. Utility Model Content

[0005] The purpose of this invention is to provide a cooling device for a nitriding furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a nitriding furnace cooling device, comprising a base, a cooling shell fixedly installed on the top of the base, a nitriding furnace disposed inside the cooling shell, a cooling pipe disposed between the cooling shell and the nitriding furnace, the cooling pipe passing through the inner wall of the cooling shell and extending outward to connect with a water pump, the water pump being installed on the top of the base;

[0007] A mounting base is fixedly installed at the top of the base, a storage tank is fixedly installed at one end of the mounting base, a connecting pipe is fixedly connected to the bottom end of the storage tank, and the bottom end of the connecting pipe is fixedly connected to the cooling pipe.

[0008] As a further preferred embodiment of this technical solution, the cooling pipe is provided with a water turbine blade, and a first rotating shaft is fixedly connected to one side of the water turbine blade, and a mixing blade is fixedly installed on the outer wall of the first rotating shaft.

[0009] As a further preferred embodiment of this technical solution, multiple mixing leaves are provided, and each mixing leaf is staggered among itself.

[0010] As a further preferred embodiment of this technical solution, a first bevel gear is fixedly installed on the outer wall of the first rotating shaft, a second bevel gear is meshed with the top of the first bevel gear, a second rotating shaft is fixedly installed on the top of the second bevel gear, and a conveying auger is fixedly installed on the outer wall of the second rotating shaft, the conveying auger being rotatably installed inside the connecting pipe.

[0011] As a further preferred embodiment of this technical solution, a control panel is slidably mounted on the bottom of the storage tank.

[0012] As a further preferred embodiment of this technical solution, the inner wall of the control panel is threaded with a threaded rod, one end of which is fixedly connected to a handwheel, which is located on one side of the storage tank.

[0013] As a further preferred embodiment of this technical solution, a connecting plate is threadedly connected to the outer wall of the threaded rod, a schematic plate is fixedly installed at the bottom end of the connecting plate, a fixing plate is provided at the bottom end of the schematic plate, a through hole is opened on the inner wall of the fixing plate, and the fixing plate is fixedly installed on the outer wall of the connecting pipe.

[0014] This utility model provides a cooling device for a nitriding furnace, which has the following beneficial effects:

[0015] (1) This utility model adds a scale inhibitor to the cooling water. During operation, the water pump draws external water and delivers it to the interlayer between the cooling shell and the nitriding furnace through the cooling pipe connection, thereby cooling the nitriding furnace. During the cooling water delivery process, the scale inhibitor is delivered to the cooling pipe through the connecting pipe. The scale inhibitor mixes with the cooling water and stabilizes the calcium and magnesium ions in the water in the solution through chelation, dispersion and lattice distortion, preventing them from combining with carbonate and sulfate ions to form scale. This achieves the effect of inhibiting scale formation and maintaining heat exchange efficiency, thereby reducing downtime maintenance and improving production continuity.

[0016] (2) The size of the discharge port can be adjusted by rotating the handwheel. When it is necessary to adjust the amount of scale inhibitor added, the handwheel is rotated to drive the threaded rod to rotate. The rotation of the threaded rod causes the control plate to move at the discharge port, changing the size, thereby making adjustment. At the same time, the rotation of the threaded rod causes the connecting plate to move. The movement of the connecting plate causes the indicator plate to move above the through hole. By observing the extent of the indicator plate's obstruction of the through hole, the extent of the control plate's obstruction of the discharge port can be determined, making it easier for staff to observe the size of the discharge port and making adjustment convenient. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 4 This is a schematic cross-sectional view of the storage tank structure of this utility model;

[0021] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0022] In the diagram: 1. Base; 2. Cooling shell; 3. Nitriding furnace; 4. Cooling pipe; 5. Water pump; 6. Storage tank; 7. Mounting base; 8. Connecting pipe; 9. Control panel; 10. Threaded rod; 11. Handwheel; 12. Connecting plate; 13. Schematic panel; 14. Fixing plate; 15. Through hole; 16. Water turbine blade; 17. First rotating shaft; 18. Mixing blade; 19. First bevel gear; 20. Second bevel gear; 21. Second rotating shaft; 22. Conveying auger. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figures 1 to 5 As shown, in this embodiment, a nitriding furnace cooling device includes a base 1, a cooling shell 2 fixedly installed on the top of the base 1, a nitriding furnace 3 disposed inside the cooling shell 2, a cooling pipe 4 disposed between the cooling shell 2 and the nitriding furnace 3, the cooling pipe 4 passing through the inner wall of the cooling shell 2 and extending outward to connect with a water pump 5, the water pump 5 being installed on the top of the base 1.

[0025] A mounting base 7 is fixedly installed at the top of the base 1. A storage tank 6 is fixedly installed at one end of the mounting base 7. A connecting pipe 8 is fixedly connected to the bottom of the storage tank 6. The bottom of the connecting pipe 8 is fixedly connected to the cooling pipe 4.

[0026] The existing patent CN216337910U discloses a cooling device for a nitriding furnace 3. This patent discloses the base 1, cooling shell 2, nitriding furnace 3, cooling pipe 4 and water pump 5 proposed in this application. The technical means will not be described in detail here.

[0027] The input end of water pump 5 is connected to an external water source, and the output end of water pump 5 is connected to cooling pipe 4;

[0028] The storage tank 6 is filled with powdered scale inhibitor;

[0029] Connecting pipe 8 is specifically a venturi tube;

[0030] During operation, water pump 5 draws external water and delivers it to the interlayer between cooling shell 2 and nitriding furnace 3 via cooling pipe 4, thereby cooling nitriding furnace 3. During the cooling water delivery process, scale inhibitor is delivered into cooling pipe 4 through connecting pipe 8. The scale inhibitor mixes with the cooling water and, through chelation, dispersion and lattice distortion, stabilizes calcium and magnesium ions in the water in the solution, preventing them from combining with carbonate and sulfate ions to form scale. This achieves the effect of inhibiting scale formation and maintaining heat exchange efficiency, thereby reducing downtime maintenance and improving production continuity.

[0031] like Figures 1 to 5 As shown, a water turbine blade 16 is provided inside the cooling pipe 4, and a first rotating shaft 17 is fixedly connected to one side of the water turbine blade 16. A mixing blade 18 is fixedly installed on the outer wall of the first rotating shaft 17.

[0032] During operation, the cooling water flows in the cooling pipe 4, driving the water turbine blade 16 to rotate. The rotation of the water turbine blade 16 drives the first rotating shaft 17 to rotate, and the rotation of the first rotating shaft 17 drives the mixing blade 18 to rotate, which helps to mix the powdered scale inhibitor with the cooling water and promotes the adsorption of the corrosion inhibitor, so as to ensure the stability and reliability of scale inhibition.

[0033] like Figures 1 to 5 As shown, multiple mixing leaves 18 are provided, and each mixing leaf 18 is staggered with the others.

[0034] It improves fluid mixing efficiency, optimizes scale inhibitor dispersion, and enhances system operational stability.

[0035] like Figures 1 to 5As shown, a first bevel gear 19 is fixedly installed on the outer wall of the first rotating shaft 17. A second bevel gear 20 is meshed with the top of the first bevel gear 19. A second rotating shaft 21 is fixedly installed on the top of the second bevel gear 20. A conveying auger 22 is fixedly installed on the outer wall of the second rotating shaft 21. The conveying auger 22 is rotatably installed inside the connecting pipe 8.

[0036] During operation, the rotation of the first rotating shaft 17 drives the rotation of the first bevel gear 19, which in turn drives the rotation of the second bevel gear 20. The rotation of the second bevel gear 20 drives the rotation of the second rotating shaft 21, which in turn drives the rotation of the conveying auger 22. This causes the conveying auger 22 to rotate and convey the scale inhibitor, which is fed into the cooling pipe 4 at a constant rate to mix with the cooling water. This avoids concentration fluctuations caused by a single addition and helps to improve the uniformity of mixing.

[0037] like Figure 3 As shown, a control panel 9 is slidably installed at the bottom of the storage tank 6.

[0038] A discharge port is provided between the bottom of the storage tank 6 and the connecting pipe 8, and the control panel 9 is located at the discharge port.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown, the inner wall of the control panel 9 is threaded with a threaded rod 10, and one end of the threaded rod 10 is fixedly connected to a handwheel 11, which is located on one side of the storage tank 6.

[0040] When it is necessary to adjust the amount of scale inhibitor added, the screw rod 10 is rotated by turning the handwheel 11. The rotation of the screw rod 10 causes the control plate 9 to move at the discharge port, changing its size, thereby adjusting it to adapt to different working conditions and improving the adaptability of the device.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, a connecting plate 12 is threadedly connected to the outer wall of the threaded rod 10. A schematic plate 13 is fixedly installed at the bottom end of the connecting plate 12. A fixing plate 14 is provided at the bottom end of the schematic plate 13. A through hole 15 is opened on the inner wall of the fixing plate 14. The fixing plate 14 is fixedly installed on the outer wall of the connecting pipe 8.

[0042] During adjustment, the rotation of the threaded rod 10 drives the movement of the connecting plate 12, and the movement of the connecting plate 12 drives the indicator plate 13 to move above the through hole 15. By observing the size of the obstruction of the through hole 15 by the indicator plate 13, the size of the obstruction of the discharge port by the control plate 9 can be determined, which makes it easier for the staff to observe the size of the discharge port and make adjustment convenient.

[0043] This utility model provides a cooling device for a nitriding furnace, the specific working principle of which is as follows:

[0044] During operation, first adjust the amount of scale inhibitor added according to the needs. By turning the handwheel 11, the threaded rod 10 is rotated. The rotation of the threaded rod 10 causes the control plate 9 to move at the discharge port, changing the size, thereby making adjustments.

[0045] During adjustment, the rotation of the threaded rod 10 drives the handwheel 11 to move. The movement of the handwheel 11 drives the indicator plate 13 to move above the through hole 15. By observing the size of the obstruction of the through hole 15 by the indicator plate 13, the size of the obstruction of the discharge port by the control plate 9 can be determined, thus making it easier for the staff to observe the size of the discharge port.

[0046] Then, external water is drawn by water pump 5 and transported to the interlayer between cooling shell 2 and nitriding furnace 3 through cooling pipe 4, thereby cooling nitriding furnace 3. During the cooling water transport process, scale inhibitor is transported into cooling pipe 4 through connecting pipe 8.

[0047] Meanwhile, the cooling water flows in the cooling pipe 4, driving the water turbine blade 16 to rotate. The rotation of the water turbine blade 16 drives the first rotating shaft 17 to rotate, and the rotation of the first rotating shaft 17 drives the mixing blade 18 to rotate, which helps to mix the powdered scale inhibitor with the cooling water.

[0048] Simultaneously, the rotation of the first rotating shaft 17 drives the rotation of the first bevel gear 19, which in turn drives the rotation of the second bevel gear 20. The rotation of the second bevel gear 20 drives the rotation of the second rotating shaft 21, which in turn drives the rotation of the conveying auger 22. This causes the conveying auger 22 to rotate and convey the scale inhibitor, which is fed into the cooling pipe 4 at a constant rate to mix with the cooling water. Finally, the inhibitor enters the space between the cooling shell 2 and the nitriding furnace 3 to cool the nitriding furnace 3.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitriding furnace cooling device, comprising a base (1), characterized in that: A cooling shell (2) is fixedly installed on the top of the base (1). A nitriding furnace (3) is installed inside the cooling shell (2). A cooling pipe (4) is installed between the cooling shell (2) and the nitriding furnace (3). The cooling pipe (4) passes through the inner wall of the cooling shell (2) and extends outward to connect with a water pump (5). The water pump (5) is installed on the top of the base (1). A mounting base (7) is fixedly installed at the top of the base (1), a storage tank (6) is fixedly installed at one end of the mounting base (7), a connecting pipe (8) is fixedly connected to the bottom end of the storage tank (6), and the bottom end of the connecting pipe (8) is fixedly connected to the cooling pipe (4).

2. The nitriding furnace cooling device according to claim 1, characterized in that: The cooling pipe (4) is provided with a water turbine blade (16) inside. A first rotating shaft (17) is fixedly connected to one side of the water turbine blade (16). A mixing blade (18) is fixedly installed on the outer wall of the first rotating shaft (17).

3. The nitriding furnace cooling device according to claim 2, characterized in that: Multiple hybrid leaves (18) are provided, and each hybrid leaf (18) is staggered with the others.

4. The nitriding furnace cooling device according to claim 2, characterized in that: A first bevel gear (19) is fixedly installed on the outer wall of the first rotating shaft (17). A second bevel gear (20) is meshed with the top of the first bevel gear (19). A second rotating shaft (21) is fixedly installed on the top of the second bevel gear (20). A conveying auger (22) is fixedly installed on the outer wall of the second rotating shaft (21). The conveying auger (22) is rotatably installed inside the connecting pipe (8).

5. The nitriding furnace cooling device according to claim 1, characterized in that: A control panel (9) is slidably mounted on the bottom of the storage tank (6).

6. The nitriding furnace cooling device according to claim 5, characterized in that: The inner wall of the control panel (9) is threaded with a threaded rod (10), and one end of the threaded rod (10) is fixedly connected to a handwheel (11), which is located on one side of the storage tank (6).

7. The nitriding furnace cooling device according to claim 6, characterized in that: The outer wall of the threaded rod (10) is threadedly connected to a connecting plate (12). A schematic plate (13) is fixedly installed at the bottom end of the connecting plate (12). A fixing plate (14) is provided at the bottom end of the schematic plate (13). A through hole (15) is opened on the inner wall of the fixing plate (14). The fixing plate (14) is fixedly installed on the outer wall of the connecting pipe (8).

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