Continuous and automatic magnesium metal feeding device

Abstract

The utility model particularly relates to a continuous and automatic magnesium metal feeding device which comprises a stock bin with the top being of a closed structure, a feeding hopper is arranged at the top of a top plate of the stock bin, the bottom of the stock bin is connected with a spiral conveyor, a flat plate scale is installed at the bottom of the spiral conveyor, and a discharging port in the bottom of the stock bin is communicated with a material pipe of the spiral conveyor. A discharging port in the bottom of a material pipe of the spiral conveyor is connected with a rubber flexible connecting pipe, a first valve is installed at the bottom of the rubber flexible connecting pipe, a discharging pipe is connected to the bottom of the first valve, a second valve and a third valve are installed at the bottom of the discharging pipe, and a connecting pipe is connected to the bottom of the third valve and is of a double-layer structure. And the outer layer of the connecting pipe is connected with a cooling water inlet pipe and a cooling water outlet pipe. Magnesium powder is stored in the stock bin, then the magnesium powder is conveyed into the reaction kettle by several times through the spiral conveyor, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of material feeding equipment, and particularly relates to a continuous automatic feeding device for metallic magnesium. Background Art

[0002] When preparing Grignard reagent, magnesium powder needs to be added into the reaction kettle in batches. Manual feeding has potential safety hazards, and there is a risk of occupational health poisoning due to the overflow of tetrahydrofuran gas. Moreover, magnesium powder is prone to oxidation reaction. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the utility model provides a continuous automatic feeding device for metallic magnesium.

[0004] The technical solution of the utility model is realized as follows: A feeding hopper is arranged at the top of the top plate of the silo. The bottom of the silo is connected with a screw conveyor. A platform scale is installed at the bottom of the screw conveyor. The discharge port at the bottom of the silo is communicated with the material pipe of the screw conveyor. The discharge port at the bottom of the material pipe of the screw conveyor is connected with a rubber flexible connecting pipe. A valve I is installed at the bottom of the rubber flexible connecting pipe. The bottom of the valve I is connected with a blanking pipe. A valve II and a valve III are installed at the bottom of the blanking pipe. The bottom of the valve III is connected with a connecting pipe. The connecting pipe is of a double-layer structure. A cooling water inlet pipe and a cooling water outlet pipe are connected to the outer layer of the connecting pipe.

[0005] A stirring motor is installed at the center position of the top of the top plate of the silo. A stirring shaft is connected to the connecting shaft of the stirring motor. Stirring blades are connected to the stirring shaft.

[0006] A nitrogen connecting pipe I is connected to the top plate of the silo. A nitrogen connecting pipe II is connected to the top of the storage pipe. Several main flow air discs are connected to the side of the blanking pipe.

[0007] The valve I and the valve II are automatic valves, and the valve III is a manual valve.

[0008] A flange glass observation port is arranged on the blanking pipe.

[0009] A material level sensor is installed on the inner side wall of the silo, and an audible and visual alarm is installed outside the silo.

[0010] The technical solution of the utility model has the following positive effects: The utility model stores magnesium powder in the silo, and then conveys the magnesium powder to the reaction kettle in batches through the screw conveyor, which is more convenient to use; The auxiliary flow air discs accelerate the discharge of materials from the bottom of the storage pipe, preventing the materials from sticking to the wall of the storage pipe; The material level sensor is used to sense the materials in the silo. If there is no material, the signal will be transmitted to the audible and visual alarm through the controller, and the audible and visual alarm will give an alarm to remind the worker to add materials; The nitrogen connecting pipe I and the nitrogen connecting pipe II are both connected to nitrogen to prevent magnesium from undergoing oxidation reaction; Description of the Drawings

[0011] Figure 1 This is the front view of the present utility model. Detailed Description of the Invention

[0012] As Figure 1 shown, a continuous automatic feeding device for magnesium metal includes a silo 1 with a closed top structure. A feeding hopper 2 is arranged on the top of the top plate of the silo 1, and a lid is installed on the feeding hopper 2. The bottom of the silo 1 is connected to a horizontally arranged screw conveyor 4. A flat scale 23 is installed at the bottom of the screw conveyor. The discharge port at the bottom of the silo 1 is communicated with the material pipe 3 of the screw conveyor 4. The discharge port at the bottom of the material pipe 3 of the screw conveyor 4 is connected to a rubber flexible connecting pipe 5. A valve one 6 is installed at the bottom of the rubber flexible connecting pipe 5. The bottom of the valve one 6 is connected to a blanking pipe 7. A valve two 8 and a valve three 9 are installed at the bottom of the blanking pipe 7. The bottom of the valve three 9 is connected to a connecting pipe 10. The connecting pipe 10 is of a double-layer structure. A cooling water inlet pipe 12 and a cooling water outlet pipe 11 are connected to the outer layer of the connecting pipe 10. Specifically, this device continuously adds magnesium powder into the reaction kettle. The bottom of the connecting pipe 10 is connected to the inlet of the reaction kettle, and the reaction kettle is not shown. In the initial state, the valve one 6 is open, the valve two 8 is closed. 50KG of magnesium powder is manually poured into the feeding hopper 2. The flat scale 23 can weigh. The rubber flexible connecting pipe 5 is a flexible connection to improve the weighing accuracy. Nitrogen is introduced through the nitrogen connecting pipe one 16 and the nitrogen connecting pipe two 17. The screw conveyor 4 is started for 3 minutes, and 3KG of materials enter the blanking pipe 7. The valve one 6 is closed, the valve two 8 is opened, and the fluidization assisting air disc 18 is introduced with nitrogen for 1 minute to send the magnesium powder into the reaction kettle. Then the valve two 8 is closed, the valve one 6 is opened, the fluidization assisting air disc 18 stops introducing nitrogen, and the screw conveyor 4 is started. This cycle is repeated 15 times until the magnesium powder is consumed. Since the magnesium powder will react in the reaction kettle and the generated gas will enter the connecting pipe 10, the cooling water inlet pipe 12 is located below the cooling water outlet pipe 11. Cold water is introduced into the interlayer of the connecting pipe 10 through the cooling water inlet pipe 12, and the cold water will cool the gas, so that the gas will not continue to rise when it enters the reaction kettle again.

[0013] A stirring motor 13 is installed at the central position on the top of the top plate of the silo 1. A stirring shaft 14 is connected to the connecting shaft of the stirring motor 13, and stirring blades 15 are connected to the stirring shaft 14. Specifically, when the stirring motor 13 is started, it drives the stirring shaft 14 to rotate, and the stirring blades 15 stir the materials to prevent caking.

[0014] A nitrogen connecting pipe 16 is connected to the top plate of the silo 1, and a nitrogen connecting pipe 17 is connected to the top of the material pipe 3 of the screw conveyor 4 and above the discharge port; several air flow assisting discs 18 are connected to the side of the blanking pipe 7; specifically, both the nitrogen connecting pipe 16 and the nitrogen connecting pipe 17 are connected to nitrogen to prevent magnesium from undergoing an oxidation reaction; the air flow assisting discs 18 are connected to nitrogen, and vibration will also be generated when nitrogen is introduced, accelerating the discharge of materials from the bottom of the blanking pipe 7 and preventing the materials from sticking to the wall of the blanking pipe 7.

[0015] The first valve 6 and the second valve 8 are automatic valves, and the third valve 9 is a manual valve; the first valve 6 and the second valve 8 can be automatically controlled, and the third valve 9 is for maintenance use.

[0016] A flange glass observation port 20 is provided on the blanking pipe 7; specifically, the glass observation window 20 facilitates observation.

[0017] A material level sensor 21 is installed on the inner side wall of the silo 1, and an audible and visual alarm 22 is installed outside the silo 1; specifically, the material level sensor 21 is used to sense the materials in the silo 1. If there are no materials, a signal will be transmitted to the audible and visual alarm 22 through the controller, and the audible and visual alarm 22 will give an alarm to remind the workers to add materials.

Claims

1. A continuous automatic feeding device for magnesium metal, comprising a silo with a closed top structure, characterized in that: A feeding hopper is arranged on the top of the top plate of the silo, a screw conveyor is connected to the bottom of the silo, a flat scale is installed at the bottom of the screw conveyor, a discharge port at the bottom of the silo is connected to the material pipe of the screw conveyor, a rubber flexible connecting pipe is connected to the discharge port at the bottom of the material pipe of the screw conveyor, a valve one is installed at the bottom of the rubber flexible connecting pipe, a discharge pipe is connected to the bottom of the valve one, a valve two and a valve three are installed at the bottom of the discharge pipe, a connecting pipe is connected to the bottom of the valve three, the connecting pipe has a double-layer structure, and a cooling water inlet pipe and a cooling water outlet pipe are connected to the outer layer of the connecting pipe.

2. A magnesium metal continuous automatic feeding device according to claim 1, characterized in that: A stirring motor is installed at the center position of the top of the top plate of the silo, a stirring shaft is connected to the connecting shaft of the stirring motor, and a stirring blade is connected to the stirring shaft.

3. A magnesium metal continuous automatic feeding device according to claim 2, characterized in that: A nitrogen connecting pipe 1 is connected to the top plate of the silo, a nitrogen connecting pipe 2 is connected to the top of the material pipe of the screw conveyor and above the material outlet, and a plurality of flow-aiding air discs are connected to the side of the material discharge pipe.

4. A magnesium metal continuous automatic feeding device according to claim 1, characterized in that: Valve 1 and valve 2 are automatic valves, and valve 3 is a manual valve.

5. The magnesium metal continuous automatic feeding device according to claim 1, characterized in that: A flange glass observation port is provided on the discharge pipe.

6. The magnesium metal continuous automatic feeding device according to claim 1, characterized in that: A material level sensor is installed on the side wall inside the silo, and an audible and visual alarm is installed outside the silo.

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