Jet mill water leakage improving device

Abstract

The utility model relates to the technical field of neodymium-iron-boron magnet production, in particular to a jet mill water leakage improving device. The water leakage detection device comprises a connecting mechanism connected with a cooling pipeline of the water cooler and a detection mechanism connected with the connecting mechanism and used for detecting whether water leakage exists or not. According to the utility model, the water outlet connector is arranged on the cooling pipeline of the water cooler, if the water cooler leaks water, leaked water is guided into the water storage tank through the water outlet connecting pipe, two probes of the detection mechanism can be conducted when detecting that water exists at the bottom of the water storage tank, and the water level detector can control the alarm lamp to give an alarm; when the water cooler leaks water, an alarm is triggered automatically, so that an operator is guided to quickly check and find a water leakage point.

Description

Technical Field

[0001] This utility model relates to the field of neodymium iron boron magnet production technology, and in particular to a device for improving water leakage in air jet mills. Background Technology

[0002] Air jet mills are advanced pulverizing equipment. Their working principle is based on the interaction between high-speed airflow and material particles to achieve ultra-fine pulverization of materials. Air jet mills mainly use high-speed airflow as a power source, accelerating the airflow to supersonic speed through nozzles to form strong shock waves and shear forces. Specifically, when material particles are introduced into this high-speed airflow area, they are subjected to the dual effects of shock waves and shear forces, resulting in violent collisions, friction, and breakage between the material particles, thereby achieving ultra-fine pulverization.

[0003] Because air jet mills can utilize the interaction between high-speed airflow and material particles, they can achieve efficient pulverization in a short time. Moreover, the particle size distribution of materials processed by air jet mills is uniform, which is beneficial for subsequent processing and application. Air jet mills are often used in the production of neodymium iron boron magnets. They can prepare ultrafine powders with high production efficiency and uniform particle size.

[0004] Currently, in NdFeB magnet production workshops, commercially available air jet mills cannot prevent or identify water leaks in the compressors or pipelines of the air jet mill. When water leaks into the air circuit from the compressor (which has a water cooler inside), water molecules directly mix with the NdFeB powder. After a leak occurs, the compressor and other equipment in the air jet mill cannot detect the problem in time. This is because the problem can only be discovered when the product flows to the sintering furnace and explodes in a split manner, or when the oxygen content of the magnet is tested and found to be too high. By the time the cause is traced back to the air jet mill process, a long time has passed. At this point, the air jet mill has often produced a large number of defective products, resulting in huge losses. Summary of the Invention

[0005] To overcome the above shortcomings, the purpose of this utility model is to provide a water leakage improvement device for an airflow mill. It has an outlet connector installed on the cooling pipe of the water cooler. If the water cooler leaks, the leaked water is led into the water storage tank through the outlet connector. When the two probes of the detection mechanism detect water at the bottom of the water storage tank, they will conduct and the water level detector will control the alarm light to sound an alarm.

[0006] The technical solution of this utility model to solve its technical problem is:

[0007] A water leakage improvement device for an air classifier mill is disclosed, which is connected to the cooling pipes of the water cooler of the air classifier mill. The device includes a connecting mechanism connected to the cooling pipes of the water cooler and a detection mechanism connected to the connecting mechanism for detecting water leakage. The connecting mechanism includes a water storage tank, an outlet connector, and an outlet connecting pipe. The outlet connector is connected to the cooling pipes of the water cooler. The water storage tank has an inlet and an outlet. The two ends of the outlet connecting pipe are respectively connected to the outlet connector and the inlet. The detection mechanism includes a water level detector, an alarm light, a probe, and a probe mounting base. The probe mounting base is connected to the top of the water storage tank. Two probes are mounted on the probe mounting base and extend into the water storage tank. The water level detector is electrically connected to the alarm light and the probes, respectively, and is powered by an external power source.

[0008] As an improvement of this utility model, a gap of 3mm to 8mm is left between the probe and the bottom of the water storage tank.

[0009] As a further improvement of this utility model, an insulating gasket is provided at the bottom of the water storage tank, and the probe contacts the insulating gasket.

[0010] As a further improvement of this utility model, the outlet connector is connected to the lowest point of the cooling pipe of the water cooler.

[0011] As a further improvement of this utility model, the water outlet is connected to a ball valve via a connecting water pipe.

[0012] As a further improvement of this utility model, the ball valve is installed on the door panel of the compressor of the airflow mill.

[0013] As a further improvement of this utility model, the alarm device adopts an audible and visual alarm light.

[0014] As a further improvement of this utility model, the water outlet connection pipe is made of soft air pipe or metal pipe.

[0015] As a further improvement of this utility model, the position of the water storage tank is lower than the position of the water cooler.

[0016] As a further improvement of this utility model, the position of the water inlet on the water storage tank is lower than the position of the water outlet on the water storage tank.

[0017] In this invention, an outlet connector is installed on the cooling pipe of the water cooler. If the water cooler leaks, the leaking water is directed to the water storage tank through the outlet connector. When the two probes of the detection mechanism detect water at the bottom of the water storage tank, they will conduct, and the water level detector will control the alarm light to sound an alarm. When the water cooler leaks, the alarm is automatically triggered to guide the operator to quickly check and find the leak point. Attached Figure Description

[0018] For ease of explanation, the present invention will be described in detail below with reference to the preferred embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the connection structure of this utility model;

[0020] Figure 2 This is a connection diagram of the present invention connected to an air classifier mill.

[0021] Reference numerals: 1-Water cooler, 11-Cooling pipe, 2-Connecting mechanism, 21-Water storage tank, 22-Outlet connector, 23-Outlet connection pipe, 24-Inlet, 25-Outlet, 26-Drain outlet, 3-Detection mechanism, 31-Water level detector, 32-Alarm light, 33-Probe, 34-Probe mounting base. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] like Figures 1 to 2 As shown, the leakage improvement device for an airflow mill of this utility model is connected to the water cooler 2 of the airflow mill.

[0024] This utility model discloses a water leakage improvement device for an airflow mill, which includes a connecting mechanism 2 connected to the cooling pipe 11 of a water cooler 1 and a detection mechanism 3 connected to the connecting mechanism 2 for detecting whether there is a water leak. If the water cooler 1 leaks, the connecting mechanism 2 leads the leaking water from the cooling pipe 11 of the water cooler 1 to the detection mechanism 3. Because the water is connected, the detection mechanism 3 determines that a water leak has occurred, and can arrange for maintenance personnel in the workshop to shut down the equipment in time for investigation and avoid losses.

[0025] In this utility model, the connecting mechanism 2 includes a water storage tank 21, an outlet connector 22, and an outlet connecting pipe 23. The outlet connector 22 is connected to the cooling pipe 11 of the water cooler 1. The water storage tank 21 is provided with an inlet 24, an outlet 25, and a drain outlet 26. The position of the inlet 24 on the water storage tank 21 is lower than the position of the outlet 25 on the water storage tank 21. The drain outlet 26 facilitates manual inspection and thorough drainage. The two ends of the outlet connecting pipe 23 are respectively connected to the outlet connector 22 and the inlet 24. When leakage occurs, the outlet connecting pipe 23 will lead the leaking water from the cooling pipe 11 of the water cooler 1 out and into the water storage tank 21 from the inlet 24. Due to its own gravity, the water will flow into the water storage tank 21 along the outlet connecting pipe 23 and accumulate at the bottom of the water storage tank 21.

[0026] In this invention, the detection mechanism 3 includes a water level detector 31, an alarm light 32, a probe 33, and a probe mounting base 34. The probe mounting base 34 is connected to the top of the water storage tank 31. Two probes 33 are provided on the probe mounting base 34 and extend into the water storage tank 31. The water level detector 31 is electrically connected to the alarm light 32 and the probes 33 respectively, and the water level detector 31 is connected to an external power source. When there is water at the bottom of the water storage tank 21, the two probes 33 stick to the water. Because water conducts electricity, the two probes 33 become conductive, and the water level detector 31 can detect the presence of water, causing the alarm light 32 to sound an alarm.

[0027] In actual production, nitrogen enters the compressor head of the air jet mill and is then cooled by a water cooler before being discharged as high-pressure gas. The inside of the water cooler carries water, while the outside carries gas. If the water cooler ruptures, perforates, or fails to seal during use, the cooling water will flow into the nitrogen pipeline through the leak point. The compressed nitrogen, carrying water molecules, enters the air jet mill and mixes with the powder, contaminating the product.

[0028] When this invention is applied in actual production, an outlet connector 22 is connected at the lowest point of the cooling pipe 11 of the water cooler 1. The outlet connector 22 is connected to the water storage tank 21 through the outlet connection pipe 23. When the water cooler leaks, the water flows from the pipe into the outlet connector 22 due to gravity, and then into the water storage tank 21 through the outlet connection pipe 23. The detection mechanism 3 can detect whether there is water in the water storage tank 21 in time through the probe 33 and alarm. If the leakage is very small, the water molecules will be directly carried away by nitrogen during the operation of the equipment (the impact of a small leakage on the product is also small). However, when the equipment is turned off, since there is no pressure in the nitrogen pipe, the cooling water will quickly flow into the water storage tank 21 through the outlet connection pipe 23, and the detection mechanism 3 can also detect it.

[0029] In this invention, in order to better detect whether there is water in the water storage tank 31, two implementation methods are adopted. One is that the probe 33 leaves a gap of 3mm to 8mm between itself and the bottom of the water storage tank 31, preferably a gap of 5mm. The other is that an insulating gasket is provided at the bottom of the water storage tank 31, and the probe 33 contacts the insulating gasket. Both methods can quickly detect whether there is water accumulated at the bottom of the water storage tank 31.

[0030] In this invention, the outlet connector 22 is connected to the lowest point of the cooling pipe 11 of the water cooler 1, which can better draw out the leaking water, thereby better detecting whether there is a leak in the entire air jet mill. In order to better draw out the leaking water, the outlet connector 22 can be connected to the lowest point at both ends of the cooling pipe 11 of the water cooler 1, or the outlet connector 22 can be connected to the lowest point at both ends of the cooling pipe 11 of the compressor's intermediate cooler and aftercooler, so that multiple points can be detected at the same time.

[0031] In this invention, the water storage tank 21 is positioned lower than the water cooler 1, which allows for better diversion of leaked water into the water storage tank 21.

[0032] For easier installation, the outlet 25 is connected to a ball valve via a connecting water pipe. The ball valve is installed on the door panel of the airflow mill compressor.

[0033] In this utility model, the alarm 32 adopts an audible and visual alarm light, which can better issue an alarm and remind maintenance personnel in the workshop.

[0034] In this invention, the water outlet connection pipe is a flexible air pipe or a metal pipe.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for improving water leakage in an air-jet mill, which is connected to the cooling pipes of the water cooler of the air-jet mill, characterized in that, The device includes a connection mechanism connected to the cooling pipes of a water cooler and a detection mechanism connected to the connection mechanism for detecting leaks. The connection mechanism includes a water storage tank, an outlet connector, and an outlet connecting pipe. The outlet connector is connected to the cooling pipes of the water cooler. The water storage tank has an inlet and an outlet. The two ends of the outlet connecting pipe are respectively connected to the outlet connector and the inlet. The detection mechanism includes a water level detector, an alarm light, a probe, and a probe mounting base. The probe mounting base is connected to the top of the water storage tank. Two probes are mounted on the probe mounting base and extend into the water storage tank. The water level detector is electrically connected to the alarm light and the probes, and the water level detector is connected to an external power source.

2. The airflow mill leakage improvement device according to claim 1, characterized in that, The probe has a gap of 3mm to 8mm between it and the bottom of the water tank.

3. The airflow mill leakage improvement device according to claim 1, characterized in that, An insulating pad is provided at the bottom of the water storage tank, and the probe contacts the insulating pad.

4. A device for improving water leakage in an airflow mill according to claim 1, 2, or 3, characterized in that, The outlet connector is connected to the lowest point of the cooling pipe of the water cooler.

5. The airflow mill leakage improvement device according to claim 1, characterized in that, The water outlet is connected to a ball valve via a connecting pipe.

6. The airflow mill leakage improvement device according to claim 5, characterized in that, The ball valve is installed on the door panel of the compressor of the airflow mill.

7. The airflow mill leakage improvement device according to claim 1, characterized in that, The alarm light is an audible and visual alarm light.

8. The airflow mill leakage improvement device according to claim 1, characterized in that, The water outlet connection pipe is made of flexible air or metal.

9. The airflow mill leakage improvement device according to claim 1, characterized in that, The water storage tank is located below the water cooler.

10. The airflow mill leakage improvement device according to claim 1, characterized in that, The position of the inlet on the water storage tank is lower than the position of the outlet on the water storage tank.

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