A connecting door structure for connecting between a feeding box and a vacuum sintering furnace

Abstract

The utility model relates to connecting door structure technical field, especially a kind of connecting door structure for the connection between conveying material box and vacuum sintering furnace.Its technical scheme includes connecting body, and further include the valve component of fixed installation in the both ends of connecting body, the valve component includes plugging assembly and sealing assembly, the plugging assembly includes the support block of fixed installation on connecting body, multiple plugging plates are slidably installed in the support block, sealing element is equipped between the two adjacent plugging plates, the plugging assembly further includes the drive assembly of driving multiple plugging plates synchronous contraction or expansion.The utility model is by splitting single valve core into multiple plugging plates, when canceling plugging, just need to move multiple plugging plates to expand by drive assembly, plugging can be cancelled, so that the stroke of plugging plate is less than the stroke of single valve core, and then the path of plugging plate movement can be reduced, thereby the volume of machine body is reduced, effectively reduce the thickness of connecting door, adapt compact production line layout.

Description

Technical Field

[0001] This utility model relates to the field of connecting door structure technology, and in particular to a connecting door structure for use between a material conveying box and a vacuum sintering furnace. Background Technology

[0002] In the vacuum sintering process of rare earth permanent magnet materials (such as neodymium iron boron), the traditional production mode carries the risk of material oxidation. Rare earth powder and pressed blanks will spontaneously combust and oxidize in air, leading to a decrease in magnet performance. When the oxygen content is >500ppm, the magnetic energy product decreases by more than 10%. It is necessary to use a connecting device to connect the conveying box and the vacuum sintering furnace, and to keep the inside of the connecting device under vacuum. In this way, the rare earth permanent magnet material passing through the conveying box will directly enter the connecting door and then enter the sintering furnace for sintering, which can effectively prevent the rare earth permanent magnet material from being oxidized.

[0003] However, valves need to be installed at both ends of the connecting device. After the connection is completed, the valves can be opened to transport rare earth permanent magnet materials. When disassembling after transport, the valves can be closed to ensure that the inside of the connecting device is kept in vacuum, avoiding frequent vacuuming and effectively achieving energy saving. However, the valve generally achieves the sealing function by rotating or sliding the valve core up and down. Therefore, the size of the valve core needs to be matched with the inner diameter of the connecting device. This results in a large valve core size, which makes the overall valve structure large. This is not conducive to reducing the size of the device, not conducive to transfer, and increases the space occupation. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a connecting door structure between the material conveying box and the vacuum sintering furnace that reduces the volume occupied by the valve structure and helps to reduce the size of the device.

[0005] The technical solution of this utility model: A connecting door structure for a material conveying box and a vacuum sintering furnace, including a connecting body, and further comprising:

[0006] A valve component fixedly installed at both ends of a connector, the valve component including a plugging assembly and a sealing assembly;

[0007] The sealing assembly includes a support block fixedly mounted on a connector, and multiple sealing plates are slidably installed inside the support block. A sealing element is provided between two adjacent sealing plates. The sealing assembly also includes a drive assembly for driving the multiple sealing plates to contract or expand synchronously.

[0008] Optionally, the drive assembly includes a drive shaft fixedly mounted on the sealing plate, the drive shaft being slidably connected to the support block, a connecting rod being rotatably mounted on the drive shaft, a drive plate being slidably mounted on the connecting body, and multiple connecting rods being rotatably connected to the drive plate.

[0009] Optionally, a first push rod motor is fixedly mounted on the connecting body, and the output shaft of the first push rod motor is fixedly connected to the drive plate.

[0010] Optionally, the seal includes a sealing strip fixedly installed around the sealing plate, the sealing strip being elastically deformable.

[0011] Optionally, the sealing assembly includes a bellows fixedly installed on the support block, a connecting plate fixedly installed at the other end of the bellows, a plurality of sealing rings fixedly installed on the connecting plate, and a plurality of telescopic rods fixedly installed between the connecting plate and the support block.

[0012] Optionally, a second push rod motor is fixedly installed on the support block, and the output shaft of the second push rod motor is fixedly connected to the connecting plate.

[0013] Optionally, a support plate is fixedly installed in the connecting body, a plurality of rollers are rotatably installed on the support plate, and a driving component for driving the plurality of rollers to rotate is installed in the connecting body.

[0014] Optionally, the connector is provided with an exhaust port, and an electrically controlled valve is fixedly installed on the exhaust port. The electrically controlled valve is connected to the vacuum pump through a pipeline.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] By splitting a single valve core into multiple sealing plates, when unsealing, it is only necessary to move multiple sealing plates to expand by driving the component to unseal the valve core. This makes the stroke of the sealing plate less than that of a single valve core, thereby reducing the path of the sealing plate movement, thus reducing the size of the machine body, effectively reducing the thickness of the connecting door, and adapting to a compact production line layout. Attached Figure Description

[0017] Figure 1 This is a structural diagram of the connecting door structure;

[0018] Figure 2 This is a schematic diagram of the internal structure of the connecting door structure;

[0019] Figure 3 This is a structural schematic diagram of a valve component;

[0020] Figure 4 Schematic diagram of the sealing component Figure 1 ;

[0021] Figure 5 Schematic diagram of the sealing component Figure 2 .

[0022] Reference numerals: 1. Connector; 11. Support plate; 12. Roller; 2. Valve component; 21. Sealing assembly; 211. Support block; 212. Sealing plate; 213. Sealing strip; 214. Drive shaft; 215. Connecting rod; 216. Drive plate; 217. First push rod motor; 22. Sealing assembly; 221. Bellows; 222. Connecting disc; 223. Telescopic rod; 224. Second push rod motor; 225. Sealing ring; 3. Electrically controlled valve. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 2 to 5 As shown, this utility model proposes a connecting door structure for a material conveying box and a vacuum sintering furnace. It includes a connecting body 1, with both ends sealed to the material conveying box and the vacuum sintering furnace respectively, ensuring a vacuum state inside the connecting body 1. This prevents the rare earth permanent magnet material from contacting oxygen during transport, thus avoiding oxidation. The connecting body also includes valve components 2 fixedly installed at both ends of the connecting body 1. Each valve component 2 includes a sealing assembly 21 and a sealing assembly 22. The sealing assembly 21 controls the sealing state on both sides of the connecting body 1, while the sealing assembly 22 ensures that both ends of the connecting body 1 are sealed to the material conveying box and the vacuum sintering furnace. The airtightness of the feeding box and the vacuum sintering furnace is ensured by the sealing assembly 21, which includes a support block 211 fixedly mounted on the connecting body 1. Multiple sealing plates 212 are slidably installed inside the support block 211. A sealing element is provided between two adjacent sealing plates 212. The sealing assembly 21 also includes a drive assembly that drives multiple sealing plates 212 to contract or expand synchronously. By splitting a single valve core into multiple sealing plates 212, when the sealing is canceled, it is only necessary to move multiple sealing plates 212 to expand through the drive assembly to cancel the sealing. This makes the stroke of the sealing plate 212 less than the stroke of a single valve core, thereby reducing the movement path of the sealing plate 212 and thus reducing the size of the machine body.

[0025] Furthermore, the drive assembly includes a drive shaft 214 fixedly mounted on the sealing plate 212. The drive shaft 214 is slidably connected to the support block 211. Connecting rods 215 are rotatably mounted on the drive shaft 214. A drive plate 216 is slidably mounted on the connecting body 1. Multiple connecting rods 215 are rotatably connected to the drive plate 216. By moving the drive plate 216, the multiple connecting rods 215 can be moved. The rotating connecting rods 215 will push the drive shaft 214 to move, and the moving drive shaft 214 will drive the sealing plate 212 to move. The moving sealing plate 212 is... They can move away from or close to each other. When multiple sealing plates 212 move to the outside of the center hole of the support block 211, both ends of the connector 1 can be fully opened, and rare earth permanent magnet materials can be transported. When the sealing plates 212 come into contact with each other, both ends of the connector 1 can be sealed. A first push rod motor 217 is fixedly installed on the connector 1. The output shaft of the first push rod motor 217 is fixedly connected to the drive plate 216. The first push rod motor 217 can drive the drive plate 216 to move, and the moving drive plate 216 can drive the sealing plates 212 to move.

[0026] The sealing element includes a sealing strip 213 fixedly installed around the sealing plate 212. The sealing strip 213 can be elastically deformed. When two adjacent sealing plates 212 come into contact with each other, they will squeeze the sealing strip 213. The squeezed sealing strip 213 will deform and seal the gap between the two adjacent sealing plates 212, thus achieving a good seal.

[0027] like Figure 3 As shown, in this embodiment, the sealing assembly 22 includes a bellows 221 fixedly installed on the support block 211. The bellows 221 can extend and retract a certain axial distance. A connecting plate 222 is fixedly installed at the other end of the bellows 221. Multiple sealing rings 225 are fixedly installed on the connecting plate 222. The connecting plate 222 is connected to the connection port on the conveying box and the vacuum sintering furnace, and the connection is sealed by the sealing rings 225. Multiple telescopic rods 223 are fixedly installed between the connecting plate 222 and the support block 211. With the support of the multiple telescopic rods 223, the connecting plate 222 can move smoothly and prevent tilting. A second push rod motor 224 is fixedly installed on the support block 211. The output shaft of the second push rod motor 224 is fixedly connected to the connecting plate 222. The second push rod motor 224 can drive the connecting plate 222 to move and compress the sealing rings 225 to form a good seal.

[0028] like Figure 1 and Figure 2As shown, in this embodiment, a support plate 11 is fixedly installed inside the connector 1, and multiple rollers 12 are rotatably installed on the support plate 11. A driving component is installed inside the connector 1 to drive the multiple rollers 12 to rotate. The driving component drives the multiple rollers 12 to rotate, so that the friction between the rollers 12 and the rare earth permanent magnet material can be used to drive the rare earth permanent magnet material to move. The driving component is existing technology and will not be described in detail here. The connector 1 is provided with an exhaust hole, and an electrically controlled valve 3 is fixedly installed on the exhaust hole. The electrically controlled valve 3 is connected to a vacuum pump through a pipe. The vacuum pump can evacuate the inside of the connector 1 to ensure that the inside of the connector 1 is kept in a vacuum state, which is convenient for filling the connector with inert gas.

[0029] In this embodiment, the two ends of the connector 1 are respectively sealed to the conveying box and the vacuum sintering furnace, and the vacuum state inside the connector 1 is ensured. This can prevent the rare earth permanent magnet material from coming into contact with oxygen during the transfer of the rare earth permanent magnet material and avoid oxidation reaction of the rare earth permanent magnet material.

[0030] The first push rod motor 217 can drive the drive plate 216 to move. Moving the drive plate 216 can drive multiple connecting rods 215 to move. The rotating connecting rods 215 will push the transmission shaft 214 to move. The moving transmission shaft 214 will drive the sealing plate 212 to move. The moving sealing plates 212 can move away from or closer to each other, thus realizing the switching between the blocking and connecting states.

[0031] By splitting a single valve core into multiple sealing plates 212, when unsealing, it is only necessary to move multiple sealing plates 212 to expand by driving the component to unseal the valve core. This makes the stroke of the sealing plate 212 less than the stroke of a single valve core, thereby reducing the path of movement of the sealing plate 212 and thus reducing the size of the machine body.

[0032] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A connecting door structure for conveying a material box and a vacuum sintering furnace, comprising a connecting body (1), characterized in that, Also includes: Valve components (2) are fixedly installed at both ends of the connector (1), the valve components (2) including a plugging assembly (21) and a sealing assembly (22); The sealing assembly (21) includes a support block (211) fixedly mounted on the connector (1), and multiple sealing plates (212) are slidably installed in the support block (211). A sealing element is provided between two adjacent sealing plates (212). The sealing assembly (21) also includes a driving assembly for driving the multiple sealing plates (212) to contract or expand synchronously.

2. The connecting door structure between the conveying box and the vacuum sintering furnace according to claim 1, characterized in that, The drive assembly includes a drive shaft (214) fixedly mounted on the sealing plate (212), the drive shaft (214) being slidably connected to the support block (211), a connecting rod (215) being rotatably mounted on the drive shaft (214), a drive plate (216) being slidably mounted on the connecting body (1), and multiple connecting rods (215) being rotatably connected to the drive plate (216).

3. The connecting door structure between the conveying box and the vacuum sintering furnace according to claim 2, characterized in that, A first push rod motor (217) is fixedly installed on the connecting body (1), and the output shaft of the first push rod motor (217) is fixedly connected to the drive plate (216).

4. The connecting door structure between the conveying box and the vacuum sintering furnace according to claim 3, characterized in that, The sealing element includes a sealing strip (213) fixedly installed around the sealing plate (212), the sealing strip (213) being elastically deformable.

5. The connecting door structure between the conveying box and the vacuum sintering furnace according to claim 4, characterized in that, The sealing assembly (22) includes a bellows (221) fixedly installed on the support block (211), a connecting plate (222) fixedly installed at the other end of the bellows (221), a plurality of sealing rings (225) fixedly installed on the connecting plate (222), and a plurality of telescopic rods (223) fixedly installed between the connecting plate (222) and the support block (211).

6. The connecting door structure between the conveying box and the vacuum sintering furnace according to claim 5, characterized in that, A second push rod motor (224) is fixedly installed on the support block (211), and the output shaft of the second push rod motor (224) is fixedly connected to the connecting plate (222).

7. A connecting door structure for a conveying box and a vacuum sintering furnace according to claim 6, characterized in that, A support plate (11) is fixedly installed inside the connecting body (1), and multiple rollers (12) are rotatably installed on the support plate (11). A driving component for driving the multiple rollers (12) to rotate is installed inside the connecting body (1).

8. A connecting door structure for a material conveying box and a vacuum sintering furnace according to claim 7, characterized in that, The connector (1) is provided with an exhaust port, and an electrically controlled valve (3) is fixedly installed on the exhaust port. The electrically controlled valve (3) is connected to the vacuum pump through a pipe.

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