Continuous fine powder conveying system

Abstract

The utility model relates to the technical field of chemical equipment production, in particular to a fine powder continuous conveying system which comprises a fine powder finished product tank, an emitter, a fine powder receiving tank, a dust remover, a nitrogen buffer tank, a compressor and a pipeline. The bottom of the fine powder finished product tank is connected with the emitter through a pipeline, the emitter is connected with a feeding port of the fine powder receiving tank through a pipeline, a gas outlet of the fine powder receiving tank is connected with the dust remover through a pipeline, a discharging port in the bottom of the dust remover is connected with the fine powder receiving tank through a pipeline, and a gas phase outlet of the dust remover is connected with an inlet of the nitrogen buffer tank through a pipeline. The outlet of the compressor is connected with the fine powder finished product tank and the emitter through pipelines; a flow throttle valve is arranged on an outlet pipeline of the compressor and forms a regulating loop with pressure or flow; the nitrogen buffer tank is provided with a pressure display instrument, and external nitrogen is supplemented or emptied according to the pressure set by the system; and the fine powder finished product tank and the fine powder receiving tank are respectively provided with a pressure display and a material level display. The device can quantitatively, continuously and uniformly convey fine powder, the conveying amount in unit time can be adjusted, the device is suitable for a long-distance conveying system, the abrasion of the system is small, nitrogen can be recycled, the environmental pollution is reduced, and the operation cost is saved.

Description

Technical Field

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

[0002] Chemical production processes often involve the processing and transportation of powdered products or intermediates. Some of these powders are fine, micron-level, and have a high hardness, making them difficult to come into contact with air. Nitrogen is often used for transport and storage of these products.

[0003] In the prior art, when the finished fine powder from the fine powder production workshop is sent to the next workshop as raw material, the fine powder in the finished product tank is generally unloaded into a tank truck. The tank truck then transports the silicon powder to the next workshop. The fine powder is then unloaded into the receiving tank through a venturi and nitrogen system. The nitrogen is discharged into the air through the filter above the receiving tank or to a water washing dust suppression tower. This method consumes a lot of nitrogen, and the exhaust gas contains dust that pollutes the environment. The operation of the tank truck in the factory poses a safety hazard and has high operating costs. Some companies also use silo pumps for dense phase intermittent transportation of fine powder. This method causes severe wear and tear on pipelines and valves, consumes a lot of nitrogen, and is difficult to recover. It can only be vented, which affects the environment and is not conducive to environmental protection. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a continuous conveying system for fine powder, which systematically designs the conveying and transfer of fine powder, improves the continuity and rate controllability of the conveying process of such products, recycles nitrogen, and reduces safety and environmental risks.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fine powder continuous conveying system, which includes a fine powder finished product tank, an emitter, a fine powder receiving tank, a dust collector, a nitrogen buffer tank, and a compressor; the bottom of the fine powder finished product tank is connected to the emitter through a pipeline, the emitter is connected to the feed port of the fine powder receiving tank through a pipeline, the air outlet of the fine powder receiving tank is connected to the dust collector through a pipeline, the bottom discharge port of the dust collector is connected to the fine powder receiving tank through a pipeline, the gas phase outlet of the dust collector is connected to the inlet of the nitrogen buffer tank through a pipeline, the outlet of the nitrogen buffer tank is connected to the inlet of the compressor through a pipeline, and the outlet of the compressor is respectively connected to the fine powder finished product tank and the emitter through pipelines; a three-way regulating valve is provided on the outlet pipeline of the compressor to form a regulating loop with the pressure or flow.

[0006] In a preferred embodiment, the nitrogen buffer tank is provided with a pressure display instrument and a nitrogen replenishment and venting system, and external nitrogen is replenished or vented according to the pressure set by the system.

[0007] In a preferred solution, the fine powder finished product tank and the fine powder receiving tank are respectively provided with pressure display and material level display instruments.

[0008] In the preferred embodiment, the regulating valves B and C connected to the emitter control the fine powder delivery rate. A regulating valve A is provided on the pipeline connecting the compressor 6 outlet and the fine powder product tank 1.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. The utility model can continuously convey powder products in a quantitative and uniform manner, is suitable for long-distance transportation, and has less pipe wear.

[0011] 2. The utility model adopts inert nitrogen as the power to transport fine powder. The nitrogen is collected and recycled, and there is basically no exhaust gas. It not only saves nitrogen consumption, but also makes the operation process safe and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model. In the figure: 1, fine powder finished product tank; 2, launcher; 3, fine powder receiving tank; 4, dust collector; 5, nitrogen buffer tank; 6, compressor. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0014] See attached Figure 1 As a preferred embodiment of the present invention, a fine powder continuous conveying system is proposed, which includes a fine powder finished product tank 1, an emitter 2, a fine powder receiving tank 3, a dust collector 4, a nitrogen buffer tank 5, and a compressor 6; the bottom of the fine powder finished product tank 1 is connected to the emitter 2 through a pipeline, the emitter 2 is connected to the feed port of the fine powder receiving tank 3 through a pipeline, the air outlet of the fine powder receiving tank 3 is connected to the dust collector 4 through a pipeline, the bottom discharge port of the dust collector 4 is connected to the fine powder receiving tank 3 through a pipeline, the gas phase outlet of the dust collector 4 is connected to the inlet of the nitrogen buffer tank 5 through a pipeline, the outlet of the nitrogen buffer tank 5 is connected to the inlet of the compressor 6 through a pipeline, and the outlet of the compressor 6 is connected to the fine powder finished product tank 1 and the emitter 2 through pipelines respectively; the outlet pipeline of the compressor 6 is provided with a three-way regulating valve to form a regulating loop with the pressure or flow. The nitrogen buffer tank 5 is provided with a pressure display instrument and a nitrogen replenishment and venting system to replenish external nitrogen or vent according to the pressure set by the system. The fine powder finished product tank 1 and the fine powder receiving tank 3 are respectively equipped with pressure display and material level display instruments. This process is simple and has a reasonable structure. Compared with the existing fine powder conveying and transfer technology, it saves nitrogen costs, is safer, and is more environmentally friendly.

[0015] A regulating valve A is installed on the pipeline connecting the outlet of compressor 6 to the finished fine powder tank 1. The nitrogen system, which connects compressor 6 to emitter 2, uses regulating valves B and C to regulate the nitrogen flow. The emitter is an L-shaped chamber. The dust collector uses a bag filter with a built-in pulse backflush system. This ensures a controllable and continuous fine powder delivery rate.

[0016] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A fine powder continuous conveying system, characterized in that: It includes a fine powder finished product tank (1), an emitter (2), a fine powder receiving tank (3), a dust collector (4), a nitrogen buffer tank (5), and a compressor (6); The bottom of the fine powder finished product tank (1) is connected to the emitter (2) through a pipeline, the emitter (2) is connected to the feed port of the fine powder receiving tank (3) through a pipeline, the gas outlet of the fine powder receiving tank (3) is connected to the dust collector (4) through a pipeline, the gas phase outlet of the dust collector (4) is connected to the inlet of the nitrogen buffer tank (5) through a pipeline, the outlet of the nitrogen buffer tank (5) is connected to the inlet of the compressor (6) through a pipeline, and the outlet of the compressor (6) is connected to the fine powder finished product tank (1) and the emitter (2) through pipelines respectively.

2. A fine powder continuous conveying system according to claim 1, characterized in that: The bottom discharge port of the dust collector (4) is connected to the fine powder receiving tank (3) through a pipeline.

3. The fine powder continuous conveying system according to claim 1, characterized in that: The nitrogen buffer tank (5) is provided with a pressure display instrument and a nitrogen replenishment and venting system.

4. The fine powder continuous conveying system according to claim 1, characterized in that: The fine powder finished product tank (1) and the fine powder receiving tank (3) are respectively provided with pressure display and material level display instruments.

5. The fine powder continuous conveying system according to claim 1, characterized in that: A regulating valve B and a regulating valve C are provided on a pipeline connected to the launcher (2) through the outlet of the compressor (6), and the fine powder conveying rate is controlled by the regulating valves B and C.

6. The fine powder continuous conveying system according to claim 1, characterized in that: A three-way regulating valve is provided on the outlet pipeline of the compressor (6) to form a regulating loop with the pressure or flow.

Images