Glow ion nitriding strengthening treatment device

Abstract

The utility model relates to the technical field of nitriding devices, and discloses a glow ion nitriding strengthening treatment device which comprises a nitriding furnace and a water tank, a separable base is arranged at the lower end of the nitriding furnace, a vacuum pump is arranged between the base and the water tank, and the interior of the nitriding furnace is communicated with the inner bottom of the water tank through the vacuum pump. A partition plate is fixedly installed at the position, close to the upper side, in the water tank, a one-way air valve penetrates through and is fixedly installed in the middle of the partition plate, a cooling pipe is arranged in an interlayer of the nitriding furnace, and communicating pipes are fixedly installed at the upper end and the lower end of the right end of the cooling pipe in a communicating mode; and a detachable high-pressure water pump is fixedly mounted at the right end of the communicating pipe at the lower end. Compared with the prior art, effective separation and collection of nitrogen are achieved, cyclic utilization of the nitrogen is achieved, environmental pollution possibly caused by direct emission of the nitrogen and ammonia gas is avoided, meanwhile, heated clear water is used for cooling, and the cracking problem caused by sudden cooling of the nitriding furnace is avoided.

Description

Technical Field

[0001] This utility model relates to the field of nitriding device technology, and in particular to a glow discharge ion nitriding enhancement treatment device. Background Technology

[0002] In the fields of machinery manufacturing and metal processing, nitriding is a crucial process for improving the surface properties of workpieces. However, traditional nitriding methods have several drawbacks in terms of resource utilization and energy consumption control. Firstly, after the nitriding reaction, the remaining ammonia and nitrogen in the furnace are often directly emitted, resulting in significant resource waste and severe environmental pollution. Companies not only need to invest heavily in raw material procurement but also face potential remediation costs due to environmental pollution. Secondly, in existing technologies, the cooling process of the nitriding furnace and workpiece typically relies on natural cooling, leading to lengthy cooling times, significantly reducing production efficiency and increasing time costs for companies. Furthermore, improper rapid cooling methods can easily cause the nitriding furnace to crack, severely impacting its lifespan and negatively affecting the nitriding effect on the workpiece, thus reducing product quality. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a glow discharge ion nitriding enhancement treatment device, which has the advantages of separating and collecting nitrogen gas and improving cooling efficiency while avoiding sudden cooling, thus solving some of the problems mentioned in the background technology.

[0004] This utility model provides the following technical solution: a glow discharge ion nitriding enhancement treatment device, including a nitriding furnace and a water tank. The lower end of the nitriding furnace is provided with a separable base. A vacuum pump is provided between the base and the water tank. The interior of the nitriding furnace is connected to the bottom of the water tank through the vacuum pump. A partition is fixedly installed near the upper side inside the water tank. A one-way gas valve is fixedly installed through and in the middle of the partition. A cooling pipe is provided in the interlayer of the nitriding furnace. The right end of the cooling pipe is connected to and fixedly installed with connecting pipes at both the upper and lower ends. A detachable high-pressure water pump is fixedly installed at the right end of the lower connecting pipe.

[0005] Furthermore, a water pump is provided on the left side of the water tank near the lower side, and the water inlet of the high-pressure water pump is detachably connected to the water pump. That is, the nitriding furnace needs to be hoisted during use, so the high-pressure water pump and the water pump need to be disassembled and assembled.

[0006] Furthermore, a detachable return pipe is fixedly installed at the right end of the upper connecting pipe. The lower end of the return pipe passes through the lower side of the internal partition of the water inlet tank, meaning that the water that has absorbed heat will re-enter the water tank through the return pipe and eventually be discharged.

[0007] Furthermore, a gas guide pipe is provided at the middle of the upper end of the water tank, and a water inlet pipe is provided at the right end of the water tank near the lower side. Multiple sets of gas supply pipes are provided at the upper end of the nitriding furnace. Ammonia and other required gases can be transported into the interior of the nitriding furnace for nitriding enhancement treatment through the gas supply pipes.

[0008] Furthermore, a vent pipe is provided at the lower middle of the water tank, and a threaded outer tube is fixedly sleeved on the outside of the vent pipe. A gas supply pipe is fixedly installed at the outlet end of the vacuum pump, and the upper end of the gas supply pipe passes through the interior between the threaded outer tube and the vent pipe. That is, the vacuum pump also needs to participate in the vacuuming operation before nitriding treatment. Therefore, the gas supply pipe is initially disconnected from the vent pipe.

[0009] Furthermore, the outer side of the threaded outer tube is threaded with a threaded sleeve, and the outer side of the threaded outer tube is slidably fitted with an inner conical sleeve at the lower side of the threaded sleeve. The outer side of the threaded outer tube is provided with a conical surface near the lower side. That is, when it is necessary to connect the gas supply pipe and the vent pipe, the special design of this solution can achieve a simple, quick and highly sealing connection operation, ensuring the feasibility of this solution.

[0010] The advantages of this utility model are as follows:

[0011] 1. The glow discharge ion nitriding enhanced treatment device of this utility model achieves effective separation and collection of nitrogen through ingenious design. After the nitriding reaction is completed, the high-temperature nitrogen and the remaining ammonia are drawn into a water tank filled with clean water. Since ammonia is easily soluble in water while nitrogen is insoluble in water, the nitrogen and ammonia are naturally separated in the water tank. Under the action of gas pressure, the nitrogen enters the upper space of the water tank and is led out for purification through a one-way gas valve and a gas guide pipe. This design not only realizes the recycling of nitrogen and creates an additional source of income for enterprises, but also avoids the environmental pollution that may be caused by the direct discharge of nitrogen and ammonia. At the same time, the nitrogen separation and collection process is simple and practical, without the need for complicated equipment and operation, thus reducing production costs.

[0012] 2. The device of this utility model also makes full use of clean water heated by high-temperature nitrogen and ammonia for cooling. After the nitrogen and ammonia enter the water tank, they exchange heat with the clean water, causing the water temperature to rise. Then, the heated clean water is transported to the cooling pipe by a high-pressure water pump. When the clean water flows in the cooling pipe, it effectively removes the heat from the nitriding furnace and the nitrided workpiece, achieving rapid cooling. This design not only reduces the cooling time of the nitriding furnace and the nitrided workpiece, improving production efficiency, but also avoids the problem of cracking caused by the sudden cooling of the nitriding furnace at high temperature and the impact on the nitriding effect. At the same time, using heated clean water for cooling saves energy and improves the energy efficiency and environmental friendliness of the entire device. This simple and practical cooling method complements the nitrogen separation and collection process, together constituting the core advantage of this device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a partial cross-sectional view of the present invention.

[0016] In the diagram: 1. Nitriding furnace; 2. Base; 3. Water tank; 4. Vacuum pump; 5. Vent pipe; 6. Baffle plate; 7. One-way valve; 8. Air guide pipe; 9. Cooling pipe; 10. Connecting pipe; 11. High-pressure water pump; 12. Water extraction pipe; 13. Return pipe; 14. Water inlet pipe; 15. Air supply pipe; 16. Air transmission pipe; 17. Threaded outer pipe; 18. Threaded sleeve; 19. Inner conical sleeve; 20. Conical surface. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-2A glow discharge ion nitriding strengthening treatment device includes a nitriding furnace 1 and a water tank 3. A detachable base 2 is provided at the lower end of the nitriding furnace 1. A vacuum pump 4 is installed between the base 2 and the water tank 3. The interior of the nitriding furnace 1 is connected to the bottom of the water tank 3 via the vacuum pump 4. A partition 6 is fixedly installed near the upper side of the interior of the water tank 3. A one-way valve 7 is fixedly installed through and in the middle of the partition 6. A cooling pipe 9 is provided in the interlayer of the nitriding furnace 1. A connecting pipe 10 is fixedly installed at both the upper and lower ends of the right end of the cooling pipe 9. A detachable high-pressure water pump 11 is fixedly installed at the right end of the lower connecting pipe 10. During the nitriding strengthening process, the device and the workpiece inside are heated. After the nitriding strengthening is completed, the water is heated by... Connect the gas supply pipe 16 of the vacuum pump 4 used for initial vacuuming to the gas inlet pipe 5. Turning on the vacuum pump 4 will extract the high-temperature nitrogen and ammonia gas in the nitriding furnace 1 to the bottom of the water tank 3. It is worth mentioning that the space below the partition 6 in the water tank 3 is filled with clean water, so that the ammonia gas that enters dissolves in the water, while the nitrogen gas does not dissolve in the water. Therefore, under the action of gas pressure, it will enter the upper space in the water tank 3 through the one-way gas valve 7, thereby completing the separation and collection of nitrogen gas. Finally, the collected nitrogen gas can be led out for purification through the gas inlet pipe 8. This not only realizes the recycling of resources, but also eliminates the nitrogen gas preparation process, creating an additional source of income for enterprises, while reducing environmental pollution caused by direct emissions.

[0019] Please see Figure 2 A water pumping pipe 12 is installed on the left side of the water tank 3 near the bottom. The water inlet of the high-pressure water pump 11 is detachably connected to the water pumping pipe 12. A detachable return pipe 13 is fixedly installed on the right end of the upper connecting pipe 10. The lower end of the return pipe 13 passes through the lower side of the internal partition 6 of the water tank 3. Heat exchange can be achieved between the high-temperature nitrogen and ammonia gas and the clean water, which lowers its own temperature and raises the temperature of the clean water. Then, by turning on the high-pressure water pump 11, the heated clean water is transported to the cooling pipe 9. The flow in the cooling pipe 9 can effectively remove the heat of the nitriding furnace 1, reducing the cooling time of the nitriding furnace 1 and the nitrided workpiece. Compared with natural cooling, the waiting time required is greatly reduced. At the same time, this solution can avoid the cracking of the nitriding furnace 1 caused by sudden cooling at high temperature and the impact on the nitriding effect.

[0020] Please see Figure 2A gas guide pipe 8 is installed at the middle of the upper end of water tank 3, and a water inlet pipe 14 is installed at the lower right end of water tank 3. After the temperature of nitriding furnace 1 drops and adapts, clean water can be added again through the water inlet pipe 14 to accelerate the cooling efficiency. Multiple sets of gas supply pipes 15 are installed at the upper end of nitriding furnace 1. Ammonia gas is transported into the interior of nitriding furnace 1 through the gas supply pipes 15. Then, electricity is applied to decompose the ammonia gas under the action of the electric field to form nitrogen and hydrogen elements. This results in a nitriding reaction that generates a dense nitrided layer on the surface of the workpiece, thereby achieving a strengthening effect.

[0021] Please see Figure 3 A vent pipe 5 is provided at the lower middle of the water tank 3. A threaded outer tube 17 is fixedly sleeved on the outside of the vent pipe 5. A gas supply pipe 16 is fixedly installed at the outlet of the vacuum pump 4. The upper end of the gas supply pipe 16 passes through the interior between the threaded outer tube 17 and the vent pipe 5. A threaded sleeve 18 is threadedly connected to the outside of the threaded outer tube 17. An inner conical sleeve 19 is slidably sleeved on the outside of the threaded outer tube 17 at the lower side of the threaded sleeve 18. A conical surface 20 is provided on the outside of the threaded outer tube 17 near the lower side. When connecting the vacuum pump 4 to the water tank 3, simply insert the gas supply pipe 16 into the interior between the vent pipe 5 and the threaded outer tube 17. Then, turning the threaded sleeve 18 will cause it to drive the inner conical sleeve 19 to descend. The squeezing action between the inner conical sleeve 19 and the conical surface 20 can seal the connection between the gas supply pipe 16 and the vent pipe 5, preventing gas leakage. The operation is simple and convenient.

[0022] Working principle: Ammonia gas is supplied to the interior of the nitriding furnace 1 through the gas supply pipe 15. Then, electricity is applied, causing the ammonia gas to decompose under the influence of an electric field, forming nitrogen and hydrogen. This nitriding reaction generates a dense nitrided layer on the workpiece surface, achieving a strengthening effect. During this process, the device and the workpiece inside are heated. After nitriding strengthening is completed, the gas supply pipe 16 of the vacuum pump 4 (used for initial vacuuming) is connected to the gas inlet pipe 5. Turning on the vacuum pump 4 allows the high-temperature nitrogen and ammonia gas inside the nitriding furnace 1 to be extracted to the bottom of the water tank 3. It is worth noting that the water tank 3 has an air gap under the partition 6. The tank is filled with clean water, so that the ammonia gas that enters dissolves in the water, while the nitrogen gas does not dissolve in the water. Therefore, under the action of air pressure, the nitrogen gas will enter the upper space of the water tank 3 through the one-way air valve 7, thereby completing the separation and collection of nitrogen gas. Furthermore, the high-temperature nitrogen and ammonia gas can exchange heat with the clean water, lowering their own temperature while raising the temperature of the clean water. Then, by turning on the high-pressure water pump 11, the heated clean water is transported to the cooling pipe 9. The flow in the cooling pipe 9 can effectively remove the heat of the nitriding furnace 1, avoiding the cracking of the nitriding furnace 1 caused by sudden cooling at high temperature and the impact on the nitriding effect.

Claims

1. A glow discharge ion nitriding enhancement treatment device, comprising a nitriding furnace (1) and a water tank (3), characterized in that: The lower end of the nitriding furnace (1) is provided with a separable base (2). A vacuum pump (4) is provided between the base (2) and the water tank (3). The interior of the nitriding furnace (1) is connected to the bottom of the water tank (3) through the vacuum pump (4). A partition (6) is fixedly installed near the upper side inside the water tank (3). A one-way valve (7) is fixedly installed through the middle of the partition (6). A cooling pipe (9) is provided in the interlayer of the nitriding furnace (1). A connecting pipe (10) is fixedly installed at both the upper and lower ends of the cooling pipe (9). A detachable high-pressure water pump (11) is fixedly installed at the right end of the connecting pipe (10) at the lower end.

2. The glow discharge ion nitriding enhancement treatment apparatus according to claim 1, characterized in that: The water tank (3) has a water pump pipe (12) located on the left side near the bottom, and the water inlet of the high-pressure water pump (11) is detachably connected to the water pump pipe (12).

3. The glow discharge ion nitriding enhancement treatment apparatus according to claim 1, characterized in that: A detachable return pipe (13) is fixedly installed at the right end of the upper connecting pipe (10), and the lower end of the return pipe (13) penetrates the lower side of the internal partition (6) of the water inlet tank (3).

4. The glow discharge ion nitriding enhancement treatment apparatus according to claim 1, characterized in that: A gas guide pipe (8) is provided at the middle of the upper end of the water tank (3), and a water inlet pipe (14) is provided at the right end of the water tank (3) near the lower side. Multiple sets of gas supply pipes (15) are provided at the upper end of the nitriding furnace (1).

5. The glow discharge ion nitriding enhancement treatment apparatus according to claim 1, characterized in that: A vent pipe (5) is provided at the middle of the lower end of the water tank (3). A threaded outer tube (17) is fixedly sleeved on the outside of the vent pipe (5). A gas delivery pipe (16) is fixedly installed at the outlet end of the vacuum pump (4). The upper end of the gas delivery pipe (16) passes through the interior between the threaded outer tube (17) and the vent pipe (5).

6. The glow discharge ion nitriding enhancement treatment apparatus according to claim 5, characterized in that: The outer side of the threaded outer tube (17) is threadedly connected to a threaded sleeve (18), and an inner conical sleeve (19) is slidably sleeved on the outer side of the threaded outer tube (17) at the lower side of the threaded sleeve (18). A conical surface (20) is provided on the outer side of the threaded outer tube (17) near the lower side.

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