Powder conveying system

Abstract

The utility model discloses a powder conveying system which comprises a feeding station. The feeding station is connected with the weighing bin, an air inlet valve of the weighing bin is connected with the nitrogen buffer tank group, the nitrogen buffer tank group is connected with the vacuum pump, and the vacuum pump is used for conveying nitrogen into the weighing bin; and the stock bin is connected with the weighing stock bin, and the weighing stock bin is used for conveying the weighed materials to the stock bin. By arranging the feeding station, the weighing stock bin, the stock bin, the roots vacuum pump, the buffer tank, the heat exchanger and the like, it is ensured that materials cannot leak in the conveying process. In the feeding process, dust entrained in air is discharged through equipment such as a dust removal filter and a Roots blower, and dustless operation is achieved. In the feeding process, nitrogen replacement is carried out on the stock bin, air is exhausted, air and materials are prevented from being mixed, it is ensured that the materials are reacted and weighed in the oxygen-free environment, an automatic metering mode is adopted, personnel feed the materials into the stock bin, automatic metering is carried out, and errors caused by manual operation are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of powder feeding, in particular to a powder conveying system. Background Art

[0002] Powder conveying is a system that achieves the purpose of powder conveying through vacuum suction, which creates a strong negative pressure in the tank, and combines comprehensive factors such as filtration, backflushing, discharge, and valve control.

[0003] The existing powder is easily affected by moisture and contamination during transportation due to the influence of the external environment, which leads to unstable reaction control, affects the reaction time, and is prone to side reactions that affect the final yield of the product. Utility Model Content

[0004] The purpose of the present invention is to solve the above problems and provide a powder conveying system.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A powder conveying system includes a feeding station;

[0007] The feeding station is connected to the weighing silo, the air inlet valve of the weighing silo is connected to the nitrogen buffer tank group, the nitrogen buffer tank group is connected to the vacuum pump, and the vacuum pump is used to transport nitrogen into the weighing silo;

[0008] At least one silo is connected to the weighing silo, and the weighing silo is used to transport weighed materials to the silo.

[0009] Optionally, a dust removal filter and a fan are provided on the top of the feeding station, and the dust removal filter and the fan are used to discharge dust entrained in the air.

[0010] Optionally, the silo is connected to the weighing silo via a pipeline, and the pipeline is used for transporting materials.

[0011] Optionally, a propeller is provided in the pipeline, one end of the propeller is connected to a motor, and the propeller is used to push the material.

[0012] Optionally, a compressor is provided at one end of the pipeline, and the compressor is used to deliver gas into the pipeline to push the material.

[0013] Optionally, a vacuum pump is provided at the inlet of the pipeline, and the vacuum pump is used to form a negative pressure at the inlet of the pipeline to suck in the material.

[0014] Optionally, at least four groups of silos are provided, and the air inlet valves of the four groups of silos are connected to the nitrogen buffer tank and the vacuum pump through pipelines.

[0015] Optionally, the nitrogen buffer tank group includes at least nitrogen buffer tank 1 and nitrogen buffer tank 2, a heat exchanger is connected between nitrogen buffer tank 1 and nitrogen buffer tank 2, and nitrogen buffer tank 1, the heat exchanger and nitrogen buffer tank 2 are connected in series.

[0016] Optionally, the blower is a Roots blower, and the vacuum pump is a Roots vacuum pump.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. This utility model is composed of a feeding station, a weighing silo, a silo, a Roots vacuum pump, a buffer tank, a heat exchanger, and other components to ensure that materials do not leak during transportation. During the feeding process, dust entrained in the air is discharged through dust removal filters, Roots blowers, and other equipment, achieving dust-free operation. During the feeding process, the silo is replaced with nitrogen to exhaust the air and prevent air from mixing with the material, ensuring that the material reacts in an oxygen-free environment. Weighing is automatic, and personnel feed the material into the silo, and the material is automatically measured, avoiding errors caused by manual operation.

[0019] In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the powder conveying system of the present utility model.

[0021] Figure numerals: 1. Feeding station; 2. Weighing silo; 3. Air inlet valve; 4. Nitrogen buffer tank group; 5. Vacuum pump; 6. Silo; 7. Dust removal filter; 8. Fan. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0023] like Figure 1As shown, in one embodiment, a powder conveying system includes a feeding station 1, which is connected to a weighing silo 62. The air inlet valve 3 of the weighing silo 62 is connected to a nitrogen buffer tank group 4, which is connected to a Roots vacuum pump 5. The vacuum pump 5 is used to convey nitrogen into the weighing silo 62. The weighing silo 62 is connected to at least one silo 6, and the weighing silo 62 can automatically measure the powder material into the silo 6. Compared with manual operation, the automatic calculation method of the weighing silo 62 can reduce feeding errors and improve the effect of subsequent reactions.

[0024] Optionally, the vacuum pump 5 allows the nitrogen in the nitrogen buffer valve group to enter the silo 6 from the bottom and top, so that the pressure in the silo 6 increases, and at the same time the material can be fully fluidized to improve the fluidity of the material. At the same time, during the feeding process, the nitrogen in the silo 6 is replaced and the air is discharged to prevent the air from mixing with the material, ensuring that the material reacts in an oxygen-free environment, avoiding oxidation of the material, and causing a decrease in the reaction effect.

[0025] Optionally, a dust removal filter 7 and a Roots blower 8 are provided on the top of the feeding station 1. The dust removal filter 7 and the blower 8 can discharge the powder entrained in the air, thereby realizing dust-free operation and effectively reducing the powder during transportation. The powder storage silo 6 is connected to the weighing silo 2 through a pipeline. The pipeline is used for the transportation of materials, which is easy to disperse and affect the environment, and there is a potential risk of powder explosion.

[0026] Optionally, the silo 6 is connected to the weighing silo 2 via a pipeline, and the pipeline is used for transporting materials. In some embodiments, a propeller is provided in the pipeline, and one end of the propeller is connected to a motor, and the propeller is used to push the material. In some embodiments, a compressor is provided at one end of the pipeline, and the compressor is used to transport gas into the pipeline to push the material. In some embodiments, a vacuum pump 5 is provided at the inlet of the pipeline, and the vacuum pump 5 is used to form a negative pressure at the inlet of the pipeline to suck in the material, flow together with the high-speed airflow, and be pushed by the airflow to be transported to a designated destination. In pipeline transportation, the material and the gas are separated during the transportation process, the material is discharged from the discharge outlet, and the gas is discharged through the blower 8. When the material transportation is completed and the pressure drops to a certain level, the outlet valve is closed and the pipeline is purged to ensure that there is no residual material in the pipeline. Optionally, the pipeline purge can be carried out by driving nitrogen gas from a compressor to purge the pipeline.

[0027] Optionally, at least four groups of silos 6 are provided, and the air inlet valves 3 of the four groups of silos 6 are connected to the nitrogen buffer tank group 4 and the vacuum pump 5 through pipelines.

[0028] Optionally, the nitrogen buffer tank group 4 includes at least nitrogen buffer tank 1 and nitrogen buffer tank 2, a heat exchanger is connected between the nitrogen buffer tank 1 and the nitrogen buffer tank 2, and the nitrogen buffer tank 1, the heat exchanger and the nitrogen buffer tank 2 are connected in series.

[0029] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder conveying system, characterized in that: Including feeding station; The feeding station is connected to the weighing silo, the air inlet valve of the weighing silo is connected to the nitrogen buffer tank group, the nitrogen buffer tank group is connected to the vacuum pump, and the vacuum pump is used to transport nitrogen into the weighing silo; At least one silo is connected to the weighing silo, and the weighing silo is used to transport weighed materials to the silo.

2. The powder conveying system according to claim 1, characterized in that: A dust removal filter and a fan are provided on the top of the feeding station, and the dust removal filter and the fan are used to discharge the dust entrained in the air.

3. The powder conveying system according to claim 1, characterized in that: The silo is connected to the weighing silo via a pipeline, and the pipeline is used for transporting materials.

4. The powder conveying system according to claim 3, characterized in that: A propeller is provided in the pipeline, one end of the propeller is connected to a motor, and the propeller is used to push the material.

5. The powder conveying system according to claim 3, characterized in that: A compressor is provided at one end of the pipeline, and the compressor is used to transport gas into the pipeline to push the material.

6. The powder conveying system according to claim 3, characterized in that: A vacuum pump is provided at the inlet of the pipeline, and the vacuum pump is used to form a negative pressure at the inlet of the pipeline to suck in the material.

7. The powder conveying system according to claim 1, characterized in that: At least four groups of silos are provided, and the air inlet valves of the four groups of silos are connected to the nitrogen buffer tank group and the vacuum pump through pipelines.

8. The powder conveying system according to claim 1, characterized in that: The nitrogen buffer tank group includes at least nitrogen buffer tank 1 and nitrogen buffer tank 2, a heat exchanger is connected between nitrogen buffer tank 1 and nitrogen buffer tank 2, and nitrogen buffer tank 1, heat exchanger and nitrogen buffer tank 2 are connected in series.

9. The powder conveying system according to claim 2, characterized in that: The blower is a Roots blower, and the vacuum pump is a Roots vacuum pump.

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