Sintering device for barium magnetic powder processing

Abstract

The sintering device for barium magnetic powder processing comprises an outer cylinder and a supporting frame, the supporting frame is fixed to the bottom end of the outer cylinder, a liquid storage box is fixed to the middle of the supporting frame, an inner cylinder is embedded into the outer cylinder, and the left side of the outer cylinder is rotationally connected with a sealing cover through a hinge; a cooling fan and a circulating pump are fixed to the left end and the right end of the top of the outer barrel respectively, a cooling disc is fixed to the left side in the outer barrel, a fixing plate is fixed to the top end in the outer barrel, an atomizing nozzle is fixed to the bottom of the fixing plate, a servo motor is fixed to the right side of the outer barrel, and an exhaust pipe is embedded into the bottom end of the outer barrel. According to the utility model, water cooling and air cooling can be simultaneously carried out on the sintered inner cylinder body, the heat dissipation and cooling effects are better, and the subsequent sintering efficiency of barium magnetic powder is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of sintering equipment technology, and in particular to a sintering device for barium magnetic powder processing. Background Technology

[0002] Barium magnetic powder, also known as barium ferrite, is a magnetic material widely used in the manufacture of homogeneous magnets, magnetic films, toys, etc. It can also be used in ceramic materials and functional materials. A sintering furnace is a furnace used to bond solid particles in a ceramic green body at high temperatures, causing grain growth, reducing voids and grain boundaries, and through mass transfer, shrinking the overall volume and increasing the density, ultimately resulting in a dense polycrystalline sintered body with a specific microstructure. It is mainly used in the steel, metallurgical, and new materials industries. Sintering is the process of heating powder or powder compacts to a temperature below the melting point of their basic components. The process of sintering involves heating the powder to a certain temperature and then cooling it to room temperature using a specific method and speed. The result of sintering is that the powder particles bond together, increasing the strength of the sintered body and transforming the aggregates of powder particles into aggregates of crystals, thereby obtaining products or materials with the desired physical and mechanical properties. Existing barium ferrite magnetic powder sintering furnaces require cooling after high-temperature heating. In current technology, cooling is generally achieved through fans or natural cooling, which takes 15-30 hours to reach below 300°C. At this temperature, the furnace door can be opened. It is evident that this cooling method is slow and affects sintering efficiency. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the above-mentioned background technology by proposing a sintering device for barium magnetic powder processing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A sintering apparatus for barium magnetic powder processing includes an outer cylinder and a support frame. The support frame is fixed to the bottom of the outer cylinder, and a liquid storage tank is fixed to the middle of the support frame. An inner cylinder is embedded inside the outer cylinder. A sealing cover is rotatably connected to the left side of the outer cylinder via a hinge. A cooling fan and a circulating pump are fixed to the left and right ends of the top of the outer cylinder, respectively. A heat dissipation plate is fixed to the left side of the inner cavity of the outer cylinder. A fixing plate is fixed to the top of the inner cavity of the outer cylinder. An atomizing nozzle is fixed to the bottom of the fixing plate. A servo motor is fixed to the right side of the outer cylinder. An exhaust pipe is embedded at the bottom of the outer cylinder.

[0006] Preferably, the outer wall of the heat sink is close to the left side of the inner wall of the inner cylinder, and the end of the heat sink near the middle of the inner cylinder has 10-20 exhaust slots in a circular opening, and the exhaust pipe of the heat dissipation fan is connected to the interior of the heat sink.

[0007] Preferably, the servo motor is rotatably connected to the inner cylinder via a drive shaft at its left output end, and the distance between the outer wall of the inner cylinder and the inner wall of the outer cylinder is 5-10cm.

[0008] Preferably, the inlet end of the circulating pump is connected to the lower interior of the storage tank via a pipe, and the outlet end of the circulating pump is connected to the interior of the fixed plate via a pipe.

[0009] Preferably, the fixing plate is positioned directly above the inner cylinder, and 10-30 atomizing nozzles are equidistantly arranged from left to right at the bottom of the fixing plate.

[0010] Preferably, the air inlet of the exhaust pipe is connected to the inside right side of the outer cylinder, the exhaust outlet of the exhaust pipe is connected to the inside right side of the liquid storage tank, and a one-way exhaust valve is fixed on the upper left side of the liquid storage tank.

[0011] 1. After the barium magnetic powder is sintered in the inner cylinder, the circulating pump introduces the coolant stored in the storage tank into multiple atomizing nozzles below the fixed plate and discharges it simultaneously. This allows the atomized coolant to be sprayed onto the hotter inner cylinder. Subsequently, the coolant flows on the outer surface of the inner cylinder due to gravity, thus dissipating heat and cooling the inner cylinder. During the cooling process, the servo motor simultaneously drives the inner cylinder to rotate slowly below the atomizing nozzles, allowing the coolant to be sprayed evenly on all surfaces of the inner cylinder. This further reduces the dead zones in heat dissipation and cooling of the inner cylinder, resulting in better heat dissipation and cooling effect, and effectively improving the subsequent sintering efficiency of the barium magnetic powder.

[0012] 2. After the coolant is sprayed onto the surface of the inner cylinder, it falls to the bottom of the outer cylinder due to gravity. It then flows back into the storage tank through the drain hole at the bottom of the outer cylinder, realizing the recycling and reuse of the coolant. During the heat dissipation and cooling process, the cooling fan generates airflow that enters the heat dissipation plate. The airflow is discharged along the exhaust groove on the inner side of the heat dissipation plate, blowing towards the inner cylinder from left to right. Then, this airflow enters the storage tank along the exhaust pipe, blows towards the coolant, and forms bubbles that rise from the coolant, thereby dissipating heat from the coolant. Afterward, this airflow is discharged through the one-way exhaust valve on the left side of the storage tank. The heat dissipation and cooling effect is good, effectively improving the subsequent sintering efficiency of the barium magnetic powder. Attached Figure Description

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

[0014] Figure 2 This is a front cross-sectional view of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the left side of a partial structure of the heat sink in this utility model.

[0016] Legend:

[0017] Outer cylinder 1, support frame 101, liquid storage tank 102, inner cylinder 103, sealing cover 104, cooling fan 2, cooling plate 201, fixing plate 3, atomizing nozzle 301, circulating pump 302, servo motor 4, exhaust pipe 5. Detailed Implementation

[0018] Example 1, referring to Figure 1-3 A sintering apparatus for barium magnetic powder processing includes an outer cylinder 1 and a support frame 101. The support frame 101 is fixed at the bottom of the outer cylinder 1, and a liquid storage tank 102 is fixed in the middle of the support frame 101. An inner cylinder 103 is embedded inside the outer cylinder 1. A sealing cover 104 is rotatably connected to the left side of the outer cylinder 1 via a hinge. A cooling fan 2 and a circulating pump 302 are fixed at the left and right ends of the top of the outer cylinder 1, respectively. A heat dissipation plate 201 is fixed on the left side inside the outer cylinder 1. A fixing plate 3 is fixed at the top of the inner part of the outer cylinder 1. An atomizing nozzle 301 is fixed at the bottom of the fixing plate 3. A servo motor 4 is fixed on the right side of the outer cylinder 1. An exhaust pipe 5 is embedded at the bottom of the outer cylinder 1.

[0019] The servo motor 4 is rotatably connected to the inner cylinder 103 through the drive shaft at its left output end. The distance between the outer wall of the inner cylinder 103 and the inner wall of the outer cylinder 1 is 5-10cm.

[0020] The inlet of the circulating pump 302 is connected to the lower interior of the storage tank 102 via a pipe, and the outlet of the circulating pump 302 is connected to the interior of the fixed plate 3 via a pipe.

[0021] After the barium magnetic powder is sintered in the inner cylinder 103, the circulating pump 302 introduces the coolant stored in the storage tank 102 into multiple atomizing nozzles 301 below the fixed plate 3 and discharges them simultaneously, so that the atomized coolant is sprayed onto the inner cylinder 103 with a higher temperature. Then, the coolant flows on the outer surface of the inner cylinder 103 due to gravity to dissipate heat and cool the inner cylinder 103.

[0022] The fixing plate 3 is positioned directly above the inner cylinder 103, and 10-30 atomizing nozzles 301 are evenly spaced from left to right at the bottom of the fixing plate 3.

[0023] During the cooling process, the servo motor 4 simultaneously drives the inner cylinder 103 to rotate slowly below the atomizing nozzle 301, so that the coolant sprayed from the atomizing nozzle 301 can be evenly sprayed on all surfaces of the inner cylinder 103, further reducing the heat dissipation dead zone of the inner cylinder 103, resulting in a better heat dissipation and cooling effect, and effectively improving the subsequent sintering efficiency of the barium magnetic powder.

[0024] Example 2 differs from Example 1 in that, in this example, the outer wall of the heat sink 201 is closely attached to the left side of the inner wall of the inner cylinder 103, and the end of the heat sink 201 near the middle of the inner cylinder 103 has a circular opening with 10-20 exhaust slots, and the exhaust pipe of the heat dissipation fan 2 is connected to the interior of the heat sink 201.

[0025] After the coolant is sprayed onto the surface of the inner cylinder 103, it will fall to the bottom of the outer cylinder 1 due to gravity and flow back into the storage tank 102 through the drain hole at the bottom of the outer cylinder 1, realizing the recycling and reuse of the coolant. During the heat dissipation and cooling process, the cooling fan 2 will generate airflow into the heat dissipation plate 201, so that the airflow is discharged along the exhaust groove on the inner side of the heat dissipation plate 201 and blown towards the inner cylinder 103 from left to right, thereby realizing the simultaneous water cooling and air cooling of the inner cylinder 103.

[0026] The air inlet of the exhaust pipe 5 is connected to the inside right side of the outer cylinder 1, and the exhaust end of the exhaust pipe 5 is connected to the inside right side of the liquid storage tank 102. A one-way exhaust valve is fixed on the upper left side of the liquid storage tank 102.

[0027] When the airflow in the heat sink 201 flows from left to right along the inner cylinder 103, the airflow enters the liquid storage tank 102 through the exhaust pipe 5 on the far right of the outer cylinder 1, blows onto the coolant and forms bubbles that rise from the coolant, thereby dissipating heat from the coolant. Then, the airflow passes through the one-way exhaust valve on the left side of the liquid storage tank 102 and is discharged. The heat dissipation and cooling effect is good, which effectively improves the subsequent sintering efficiency of the barium magnetic powder.

[0028] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A sintering apparatus for barium magnetic powder processing, comprising an outer cylinder (1) and a support frame (101), wherein the support frame (101) is fixed to the bottom end of the outer cylinder (1), characterized in that, A liquid storage tank (102) is fixed in the middle of the support frame (101). An inner cylinder (103) is embedded inside the outer cylinder (1). A sealing cover (104) is rotatably connected to the left side of the outer cylinder (1) via a hinge. A cooling fan (2) and a circulation pump (302) are fixed at the left and right ends of the top of the outer cylinder (1), respectively. A heat dissipation plate (201) is fixed inside the left side of the outer cylinder (1). A fixing plate (3) is fixed inside the top of the outer cylinder (1). An atomizing nozzle (301) is fixed at the bottom of the fixing plate (3). A servo motor (4) is fixed on the right side of the outer cylinder (1). An exhaust pipe (5) is embedded at the bottom of the outer cylinder (1).

2. The sintering apparatus for barium magnetic powder processing according to claim 1, characterized in that, The outer wall of the heat sink (201) is closely attached to the left side of the inner wall of the inner cylinder (103). The end of the heat sink (201) near the middle of the inner cylinder (103) has a circular opening with 10-20 exhaust slots. The exhaust pipe of the heat sink fan (2) is connected to the interior of the heat sink (201).

3. The sintering apparatus for barium magnetic powder processing according to claim 1, characterized in that, The servo motor (4) is rotatably connected to the inner cylinder (103) through the transmission shaft at its left output end. The distance between the outer wall of the inner cylinder (103) and the inner wall of the outer cylinder (1) is 5-10cm.

4. The sintering apparatus for barium magnetic powder processing according to claim 1, characterized in that, The inlet end of the circulating pump (302) is connected to the lower interior of the storage tank (102) through a pipe, and the outlet end of the circulating pump (302) is connected to the interior of the fixed plate (3) through a pipe.

5. The sintering apparatus for barium magnetic powder processing according to claim 1, characterized in that, The fixing plate (3) is positioned directly above the inner cylinder (103), and 10-30 atomizing nozzles (301) are equidistantly arranged from left to right at the bottom of the fixing plate (3).

6. The sintering apparatus for barium magnetic powder processing according to claim 1, characterized in that, The air inlet of the exhaust pipe (5) is connected to the inside right side of the outer cylinder (1), and the exhaust end of the exhaust pipe (5) is connected to the inside right side of the liquid storage tank (102). A one-way exhaust valve is fixed on the upper left side of the liquid storage tank (102).

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