Iron powder drying and anti-oxidation device

Abstract

This utility model discloses an anti-oxidation device for dried iron powder, relating to the field of iron powder production technology. It includes a main tank, a feeding / discharging unit, and an anti-oxidation unit. The device has a reliable feeding / discharging unit, facilitating the filling of dried iron powder into the storage tank. The iron powder is stored in the tank with anti-oxidation properties and can be easily accessed at any time. The device also has a reliable anti-oxidation unit. By agitating the iron powder inside the tank, the gas inside the iron powder escapes, reducing air retention between iron powder particles. An air pump discharges the escaped air through a gas delivery pipe, preventing the iron powder from contacting oxygen. Subsequently, an air delivery pump delivers nitrogen from a nitrogen storage tank into the storage tank. By filling the storage tank with nitrogen, the nitrogen covers the iron powder, enhancing the oxygen isolation effect and further improving the anti-oxidation effect of the iron powder inside the tank.

Description

Technical Field

[0001] This utility model relates to the field of iron powder production technology, specifically to an anti-oxidation device for iron powder after drying. Background Technology

[0002] Iron powder is a powdery material made of pure iron or iron alloys, possessing high specific surface area and good magnetic properties. Its main uses include serving as a metallurgical reducing agent, chemical catalyst, raw material for magnetic materials, and metal consumables for 3D printing. It is widely used in battery manufacturing, powder metallurgy, wastewater treatment, and food additives. Drying iron powder is a crucial step in the production process. The surface of iron powder easily reacts with moisture and oxygen to form iron oxide (rust), leading to decreased fluidity and the formation of hard lumps. Drying removes moisture, reduces the oxidation rate, and maintains the metallic activity of the iron powder.

[0003] Iron powder needs to be properly stored after drying to prevent oxidation and functional failure. Existing storage equipment for dried iron powder has poor oxygen isolation capabilities, especially for the small amount of air remaining between iron powder particles, which cannot be effectively discharged, leading to the possibility of oxidation. Therefore, we propose an anti-oxidation device for dried iron powder. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an anti-oxidation device for dried iron powder. It has a reliable feeding and discharging unit, which facilitates the filling of dried iron powder into the storage tank. The iron powder is stored in the tank with anti-oxidation measures, and the iron powder can be conveniently taken out at any time using the lower discharge pipe and manual control valve. This can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-oxidation device for iron powder after drying, comprising a main body, a feeding and discharging unit, and an anti-oxidation unit;

[0006] Main body: The interior is fitted with vertical storage tanks;

[0007] Feeding and discharging units: installed on the upper and lower sides of the main housing;

[0008] Anti-oxidation unit: Includes internal connecting rods, motor, central rotating shaft, stirring frame, air pump, gas supply pipe, and one-way valve. The storage tank has three internal connecting rods fixedly connected in a circular array inside, all three vertically oriented towards the vertical centerline of the storage tank. The motor is installed in the upper middle position inside the storage tank, and its outer wall is fixedly connected to the inner ends of the three internal connecting rods. The upper housing of the motor has a conical structure, with the motor's output shaft facing downwards and fixedly connected to the upper end of the central rotating shaft via a coupling. A spiral-rotating stirring frame is fixedly connected to the outer side of the central rotating shaft. Two triangular mounting platforms are located on the upper rear side of the main housing. An air pump is fixedly installed on the left rear mounting platform, and the suction end of the air pump is connected to the interior of the storage tank via a gas supply pipe.

[0009] The internal connecting rods of the three circular arrays are used to install the motor in the upper middle position inside the storage tank. The motor drives the central rotating shaft to rotate, which in turn drives the spiral stirring frame to rotate. When the stirring frame rotates clockwise, it can stir the iron powder in the middle side of the storage tank upward. The gaps created will allow the iron powder on the periphery to flow downward, thereby achieving the stirring of the iron powder in the tank. The stirring process will cause the gas inside the iron powder to escape outward, thereby reducing the air retention between the iron powder particles. The air pump discharges the escaped air outward through the air delivery pipe, thereby preventing the iron powder from coming into contact with oxygen.

[0010] Furthermore, the anti-oxidation unit also includes a one-way valve, a nitrogen storage tank, an air pump, and a pressure sensor. An air pump is installed and fixed on the mounting platform on the right rear side of the main body, and a nitrogen storage tank is installed and fixed on the rear side of the main body. The suction end and exhaust end of the air pump are respectively connected to the interior of the nitrogen storage tank and the storage tank through a section of air supply pipe. A one-way valve is installed at each section of air supply pipe connected to the storage tank. A pressure sensor is installed on the upper part of the inner wall of the storage tank. The nitrogen storage tank is used for storing nitrogen. A gas pump delivers nitrogen from the storage tank to the storage container. By filling the storage container with nitrogen, the nitrogen can coat the iron powder, enhancing the oxygen barrier effect and further improving the anti-oxidation effect of the iron powder inside the container. A one-way valve is used at the connection between the gas supply pipe and the storage container to restrict the unidirectional flow of gas, preventing backflow and thus achieving directional flow of gas inside and outside the container, facilitating control of the gas environment inside the container. A pressure sensor is used to monitor the pressure inside the storage container, allowing operators to maintain a stable pressure.

[0011] Furthermore, the feeding / discharging unit includes a trough, a discharge pipe, a solenoid valve, and a rubber stopper. A conical trough is centrally located at the upper end of the main housing. A section of the discharge pipe is fixedly connected to the lower end of the trough, extending downwards into the storage tank. A solenoid valve is installed in the middle section of the discharge pipe, and a rubber stopper is tightly sealed at the lower end of the trough. The trough is used to pour the dried iron powder into the storage tank. The conical housing at the upper end of the motor guides the iron powder, preventing it from accumulating on the motor housing. The solenoid valve opens and closes the discharge pipe, controlling its start and stop, and, together with the upper rubber stopper, provides a double seal for the discharge pipe, effectively ensuring the airtightness of the storage tank.

[0012] Furthermore, the feeding and discharging unit also includes a discharge pipe and a manual control valve. The discharge pipe is fixedly connected to the lower middle part of the main housing, and the upper end of the discharge pipe is connected to the interior of the storage tank. A manual control valve is installed at the connection between the discharge pipe and the storage tank. The discharge pipe is used to drain the iron powder stored inside the storage tank downwards. The opening and closing of the discharge pipe can be controlled by the manual control valve, so that the iron powder can be conveniently accessed at any time.

[0013] Furthermore, the feeding / discharging unit also includes support rods and feet. An outward-facing support rod is fixedly connected to each of the four corners of the lower end of the main housing, and a square foot is fixedly connected to the bottom of each support rod. The support rods are used to elevate the device to a certain height, facilitating the placement of the container under the discharge pipe, while the feet ensure the overall stability of the device.

[0014] Furthermore, it also includes transparent glass and a control panel. A transparent glass panel is embedded in the front end of the main housing, and the storage tank is also made of transparent glass. A control panel is installed on the right front side of the main housing, including a lower control area and an upper digital display screen. The transparent glass allows operators to easily observe the amount of iron powder stored inside the storage tank and its agitation status. The control panel displays the air pressure status inside the storage tank and provides start / stop control for the solenoid valves, motors, suction pump, and delivery pump.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This iron powder anti-oxidation device after drying has the following advantages:

[0016] 1. It features a reliable anti-oxidation unit. The motor drives the spiral stirring frame to rotate via the central shaft. When the stirring frame rotates clockwise, it stirs the iron powder in the middle of the storage tank upwards, creating gaps that allow the iron powder on the periphery to flow downwards, thus achieving the stirring of the iron powder inside the tank. During the stirring process, the gas inside the iron powder escapes outwards, thereby reducing the air retention between iron powder particles. The air pump discharges the escaped air outwards through the air supply pipe, thus preventing the iron powder from contacting oxygen. Subsequently, the air supply pump delivers nitrogen from the nitrogen storage tank into the storage tank. By filling the storage tank with nitrogen, the nitrogen can be used to cover the iron powder, enhancing the oxygen isolation effect and further improving the anti-oxidation effect of the iron powder inside the tank.

[0017] 2. It has a reliable feeding and discharging unit, which makes it easy to fill the dried iron powder into the storage tank. The iron powder is stored inside the tank to prevent oxidation, and the iron powder can be conveniently taken out at any time using the lower discharge pipe and manual control valve.

[0018] 3. This device has a reliable feeding and discharging unit, facilitating the filling of dried iron powder into the storage tank. The iron powder is stored inside the tank with anti-oxidation properties, and can be easily accessed at any time using the lower discharge pipe and manual control valve. The device also features a reliable anti-oxidation unit. The motor drives a spiral stirring frame via a central shaft. When the stirring frame rotates clockwise, it stirs the iron powder in the middle of the storage tank upwards, creating gaps that allow the iron powder on the periphery to flow downwards, thus achieving agitation of the iron powder inside the tank. This agitation process causes gas inside the iron powder to escape outwards, reducing air retention between iron powder particles. An air pump discharges the escaped air through a gas delivery pipe, preventing the iron powder from contacting oxygen. Subsequently, an air supply pump delivers nitrogen from the nitrogen storage tank into the storage tank. By filling the storage tank with nitrogen, the nitrogen covers the iron powder, enhancing the oxygen isolation effect and further improving the anti-oxidation effect of the iron powder inside the tank. Attached Figure Description

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

[0020] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0021] Figure 3 This is a schematic diagram of the upper oblique side structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the left rear side structure of this utility model.

[0023] In the diagram: 1 Main body, 2 Storage tank, 3 Inlet / outlet unit, 31 Sluice box, 32 Sluice pipe, 33 Solenoid valve, 34 Discharge pipe, 35 Manual control valve, 36 Support rod, 37 Foot seat, 38 Rubber plug, 4 Anti-oxidation unit, 41 Internal connecting rod, 42 Motor, 43 Central rotating shaft, 44 Tilting frame, 45 Air pump, 46 Gas supply pipe, 47 One-way valve, 48 Nitrogen storage tank, 49 Gas pump, 410 Pressure sensor, 5 Transparent glass, 6 Control panel. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-4 This embodiment provides a technical solution: an anti-oxidation device for dried iron powder, comprising a main box 1, a feeding and discharging unit 3, and an anti-oxidation unit 4;

[0026] The main body 1 has a vertical storage tank 2 embedded inside;

[0027] Feeding / discharging unit 3: Installed on the upper and lower sides of the main housing 1;

[0028] Anti-oxidation unit 4: includes internal connecting rods 41, motor 42, central rotating shaft 43, stirring frame 44, vacuum pump 45, gas supply pipe 46, and one-way valve 47. The interior of storage tank 2 is fixedly connected with three internal connecting rods 41 in a circumferential array. All three internal connecting rods 41 are perpendicular to the vertical center line of storage tank 2. The motor 42 is installed in the upper middle position inside storage tank 2, and its outer wall is fixedly connected to the inner end of the three internal connecting rods 41. The upper end of the motor 42 has a conical structure. The output shaft of the motor 42 faces downward and is fixedly connected to the upper end of the central rotating shaft 43 through a coupling. The outer side of the central rotating shaft 43 is fixedly connected with a spiral rotating stirring frame 44. Two triangular mounting platforms are opened on the upper rear side of the main box 1. The vacuum pump 45 is fixedly installed on the left rear mounting platform. The suction end of the vacuum pump 45 is connected to the interior of storage tank 2 through a gas supply pipe 46.

[0029] The internal connecting rods 41 of the three circular arrays are used to install the motor 42 in the upper middle position inside the storage tank 2. The motor 42 is used to drive the central rotating shaft 43 to rotate, which in turn drives the spiral stirring frame 44 to rotate. When the stirring frame 44 rotates clockwise, it can stir the iron powder in the middle side inside the storage tank 2 upward. The gaps created will cause the iron powder on the periphery to flow downward, thereby realizing the stirring of the iron powder in the tank. The stirring process will cause the gas inside the iron powder to escape outward, thereby reducing the air retention between the iron powder particles. The air pump 45 discharges the escaped air outward through the air supply pipe 46, thereby preventing the iron powder from contacting oxygen.

[0030] The anti-oxidation unit 4 also includes a one-way valve 47, a nitrogen storage tank 48, an air pump 49, and a pressure sensor 410. The air pump 49 is installed and fixed on the mounting platform on the right rear side of the main body 1. The nitrogen storage tank 48 is installed and fixed on the rear side of the main body 1. The suction end and exhaust end of the air pump 49 are respectively connected to the nitrogen storage tank 48 and the interior of the storage tank 2 through a section of air supply pipe 46. A one-way valve 47 is installed at each section of air supply pipe 46 connected to the storage tank 2. A pressure sensor 410 is installed on the upper part of the inner wall of the storage tank 2. Nitrogen storage tank 48 is used for storing nitrogen. Gas pump 49 delivers nitrogen from nitrogen storage tank 48 to storage tank 2. By filling storage tank 2 with nitrogen, nitrogen can be used to cover iron powder, enhancing the oxygen isolation effect and further improving the anti-oxidation effect of iron powder inside the tank. One-way valve 47 is used to restrict the unidirectional flow of gas at the connection between gas pipe 46 and storage tank 2, preventing gas backflow and thus achieving directional flow of gas inside and outside the tank, facilitating control of the gas environment inside the tank. Pressure sensor 410 is used to monitor the pressure inside storage tank 2 so that operators can control the pressure inside storage tank 2 to maintain a stable state.

[0031] The feeding / discharging unit 3 includes a trough 31, a discharge pipe 32, a solenoid valve 33, and a rubber stopper 38. A conical trough 31 is centrally located at the upper end of the main housing 1. A section of the discharge pipe 32 is fixedly connected to the lower end of the trough 31. The discharge pipe 32 extends downwards into the storage tank 2, and a solenoid valve 33 is installed in its middle section. A rubber stopper 38 is tightly sealed at the lower end of the trough 31. The trough 31 is used to pour dried iron powder into the storage tank 2. The conical housing at the upper end of the motor 42 guides the iron powder, preventing it from accumulating on the motor housing. The solenoid valve 33 opens and closes the discharge pipe 32, controlling the start and stop of the discharge. Together with the upper rubber stopper 38, it provides a double seal for the discharge pipe 32, effectively ensuring the airtightness of the storage tank 2.

[0032] The feeding / discharging unit 3 also includes a discharge pipe 34 and a manual control valve 35. The discharge pipe 34 is fixedly connected to the lower middle part of the main housing 1. The upper end of the discharge pipe 34 is connected to the interior of the storage tank 2, and a manual control valve 35 is installed at the connection between the discharge pipe 34 and the storage tank 2. The discharge pipe 34 is used to discharge the iron powder stored inside the storage tank 2 downwards. The opening and closing of the discharge pipe 34 can be controlled by the manual control valve 35, so that the iron powder can be conveniently taken out at any time.

[0033] The feeding / discharging unit 3 also includes support rods 36 and feet 37. A slanted outward support rod 36 is fixedly connected to each of the four corners at the lower end of the main housing 1, and a square foot 37 is fixedly connected to the bottom of each support rod 36. The support rods 36 are used to elevate the device to a certain height, facilitating the placement of a container under the discharge pipe 32. The feet 37 are used to ensure the overall stability of the device.

[0034] It also includes a transparent glass panel 5 and a control panel 6. A transparent glass panel 5 is embedded in the front of the main housing 1, and the storage tank 2 is also made of transparent glass. The control panel 6 is installed on the right side of the front of the main housing 1. The control panel 6 includes a lower control area and an upper digital display screen. The transparent glass panel 5 allows operators to easily observe the amount of iron powder stored inside the storage tank 2 and the agitation status. The control panel 6 is used to display the air pressure status inside the storage tank 2 and can provide start and stop control for the solenoid valve 33, the motor 42, the suction pump 45, and the delivery pump 49.

[0035] The working principle of the iron powder anti-oxidation device provided by this utility model is as follows: This device has a reliable feeding and discharging unit 3, which facilitates the filling of dried iron powder into the storage tank 2. The iron powder is stored in the tank with anti-oxidation properties, and the iron powder can be conveniently taken out at any time using the lower discharge pipe 34 and the manual control valve 35. The trough 31 is used to fill the dried iron powder into the storage tank 2. The conical shell at the upper end of the motor 42 can guide the iron powder and prevent it from accumulating on the motor shell. The solenoid valve 33 is used for... The opening and closing of the leakage pipe 32 controls the start and stop of leakage, and together with the upper rubber plug 38, it achieves a double sealing effect on the leakage pipe 32, effectively ensuring the airtightness of the storage tank 2. The support rod 36 is used to support it to a certain height, so that the container can be placed under the leakage pipe 32. The foot 37 is used to make the whole device more stable. The discharge pipe 34 is used to leak the iron powder stored in the storage tank 2 downwards. The opening and closing of the discharge pipe 34 can be controlled by the manual valve 35, so that the iron powder can be taken out at any time. This device also features a reliable anti-oxidation unit 4. Three internal connecting rods 41 arranged in a circular array are used to mount a motor 42 in the upper middle position inside the storage tank 2. The motor 42 drives the central rotating shaft 43 to rotate, which in turn drives the spiral stirring frame 44 to rotate. When the stirring frame 44 rotates clockwise, it stirs the iron powder in the middle of the storage tank 2 upwards, creating gaps that allow the iron powder on the periphery to flow downwards, thus achieving the stirring of the iron powder inside the tank. During the stirring process, gas inside the iron powder escapes outwards, reducing air retention between iron powder particles. The air pump 45 discharges the escaped air outwards through the air supply pipe 46, thereby preventing the iron powder from contacting oxygen; nitrogen. The nitrogen storage tank 48 is used for storing nitrogen. The gas pump 49 delivers nitrogen from the nitrogen storage tank 48 to the storage tank 2. By filling the storage tank 2 with nitrogen, the nitrogen can cover the iron powder, enhancing the oxygen isolation effect and further improving the anti-oxidation effect of the iron powder inside the tank. The one-way valve 47 restricts the unidirectional flow of gas at the connection between the gas supply pipe 46 and the storage tank 2, preventing backflow and thus achieving directional flow of gas inside and outside the tank, facilitating control of the gas environment inside the tank. The pressure sensor 410 monitors the pressure inside the storage tank 2, allowing operators to maintain a stable pressure. In addition, the transparent glass 5 allows operators to easily observe the amount of iron powder stored and the agitation status inside the storage tank 2. The control panel 6 displays the pressure status inside the storage tank 2 and provides start / stop control for the solenoid valve 33, the motor 42, the suction pump 45, and the gas pump 49.

[0036] It is worth noting that the motor 42 disclosed in the above embodiments adopts a high-efficiency and energy-saving permanent magnet synchronous motor, specifically the Huichuan MV310 series low-voltage permanent magnet synchronous motor. The input terminals of the solenoid valve 33, motor 42, vacuum pump 45 and air pump 49 are all electrically connected to the output terminal of the external power supply through the control panel 6. The control panel 6 controls the operation of the solenoid valve 33, motor 42, vacuum pump 45 and air pump 49 using methods commonly used in the prior art.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for preventing oxidation after iron powder drying, characterized in that: It includes the main box body (1), the feeding and discharging unit (3) and the anti-oxidation unit (4); The main body (1) has a vertical storage tank (2) embedded inside; Feeding and discharging units (3): installed on the upper and lower sides of the main housing (1); Anti-oxidation unit (4): includes internal connecting rods (41), motor (42), central rotating shaft (43), stirring frame (44), air pump (45), gas supply pipe (46), and one-way valve (47). The storage tank (2) has three internal connecting rods (41) fixedly connected in a circular array inside. The three internal connecting rods (41) are all perpendicular to the vertical center line of the storage tank (2). The motor (42) is installed in the upper middle part of the storage tank (2), and its outer wall is fixedly connected to the inner end of the three internal connecting rods (41). Next, the upper housing of the motor (42) is a conical structure, the output shaft of the motor (42) faces downward and is fixedly connected to the upper end of the central rotating shaft (43) through a coupling. A spiral rotating stirring frame (44) is fixedly connected to the outside of the central rotating shaft (43). Two triangular mounting platforms are provided on the upper rear side of the main box (1). A vacuum pump (45) is installed and fixed on the mounting platform on the left rear side. The suction end of the vacuum pump (45) is connected to the inside of the storage tank (2) through a section of air supply pipe (46).

2. The anti-oxidation device for iron powder after drying according to claim 1, characterized in that: The anti-oxidation unit (4) also includes a one-way valve (47), a nitrogen storage tank (48), an air pump (49), and a pressure sensor (410). The air pump (49) is installed and fixed on the mounting platform on the right rear side of the main body (1). The nitrogen storage tank (48) is installed and fixed on the rear side of the main body (1). The suction end and exhaust end of the air pump (49) are respectively connected to the interior of the nitrogen storage tank (48) and the storage tank (2) through a section of gas supply pipe (46). A one-way valve (47) is installed at each section of gas supply pipe (46) connected to the storage tank (2). A pressure sensor (410) is installed on the upper part of the inner wall of the storage tank (2).

3. The anti-oxidation device for iron powder after drying according to claim 1, characterized in that: The feeding and discharging unit (3) includes a trough (31), a discharge pipe (32), a solenoid valve (33), and a rubber stopper (38). A conical trough (31) is provided at the center of the upper end of the main box (1). A section of discharge pipe (32) is fixedly connected to the lower end of the trough (31). The discharge pipe (32) extends downward into the storage tank (2), and a solenoid valve (33) is installed in its middle section. A rubber stopper (38) is tightly plugged at the lower end of the trough (31).

4. The anti-oxidation device for iron powder after drying according to claim 3, characterized in that: The feeding and discharging unit (3) also includes a discharge pipe (34) and a manual control valve (35). The discharge pipe (34) is fixedly connected to the middle of the lower end of the main box (1). The upper end of the discharge pipe (34) is connected to the interior of the storage tank (2). A manual control valve (35) is installed at the connection between the discharge pipe (34) and the storage tank (2).

5. The anti-oxidation device for iron powder after drying according to claim 4, characterized in that: The feeding and discharging unit (3) also includes support rods (36) and feet (37). Each of the four corners of the lower end of the main box (1) is fixedly connected to a support rod (36) that is angled outward. Each support rod (36) is fixedly connected to a square foot (37) at its bottom.

6. The anti-oxidation device for iron powder after drying according to claim 1, characterized in that: It also includes transparent glass (5) and control panel (6). A transparent glass (5) is embedded in the front end of the main body (1). The storage tank (2) is also made of transparent glass. A control panel (6) is installed on the right side of the front end of the main body (1). The control panel (6) includes a lower control area and an upper digital display screen.

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