Energetic crystal specific particle size collecting device

Abstract

The invention discloses a device for collecting energetic crystals with specific granularity. The device comprises a crystal transformation reaction kettle, a screening box and a product collecting tank, the screening box comprises a screening box body of a cuboid structure, a liquid inlet formed in the left side of the upper portion of the screening box body, a liquid outlet formed in the right side of the upper portion of the screening box body, and at least one pair of partition plates which are fixed to the upper plate face of a bottom plate of the screening box body and are the same in height. The collecting funnel and the recycling funnel are connected below a bottom plate of the screening box body through holes; the inner sides of each pair of partition plates divide the bottom of the screening box into a specific-particle-size collecting area, the outer sides of each pair of partition plates are crystal recycling areas, all the collecting funnels are arranged below all the specific-particle-size collecting areas respectively, and all the recycling funnels are arranged below all the crystal recycling areas respectively. According to the energetic crystal particle size screening device, particle size screening of energetic crystals in feed liquid can be rapidly achieved.

Description

Technical Field

[0001] The invention relates to a device for collecting energetic crystals with specific particle sizes, belonging to the technical field of energetic crystal material processing. Background Art

[0002] Energetic crystal material is the core component of the charge. In order to increase the density of the charge, crystals of different particle sizes need to be selected for grading. The narrower the particle size distribution of each particle size, the more conducive it is to digital grading.

[0003] After the preparation of energetic crystal materials, energetic crystal materials in the reactor exist in various particle sizes. In order to collect energetic crystal materials of specific particle sizes and improve the narrow distribution index of particle sizes in energetic crystal materials, screening is commonly used to obtain crystals of specific particle sizes by relying on sieve hole constraints. For different particle size requirements, multiple screenings are required, which is labor-intensive and has low work efficiency; and the screening method is suitable for large-particle crystals, but not for batch production of small-particle crystals of micron and quasi-micron particle sizes. Summary of the invention

[0004] The purpose of the present invention is to provide a device for collecting energetic crystals of specific particle size in order to solve the shortcomings of traditional screening methods for collecting energetic crystal materials of specific particle size, such as high labor intensity, low work efficiency, and unsuitability for batch production of small-particle crystals of micron and quasi-micron particle sizes.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] The invention discloses a device for collecting energetic crystals of specific particle size, comprising a crystal transformation reactor, a screening box and a product collection tank;

[0007] The screening box comprises a screening box body of a rectangular parallelepiped structure, a liquid inlet arranged on the left side above the screening box body, a liquid outlet arranged on the right side above the screening box body, at least one pair of partitions of the same height fixed on the upper surface of the screening box body bottom plate, and a collecting funnel and a recovery funnel with openings connected to the bottom of the screening box body bottom plate;

[0008] The inner side of each pair of partitions separates a specific particle size collection area from the bottom of the screening box, and the outer side of each pair of partitions is a crystal recovery area. Each collection funnel is respectively arranged below each specific particle size collection area, and each recovery funnel is respectively arranged below each crystal recovery area;

[0009] The liquid inlet of the screening box is connected to the discharge port pipeline of the crystal transformation reactor, the liquid outlet of the screening box is connected to the feed port pipeline of the crystal transformation reactor, and a circulating pump is arranged on the connecting pipeline between the liquid outlet of the screening box and the feed port of the crystal transformation reactor; the bottom of each collecting funnel is connected to a product collecting tank through a pipeline, the bottom of each recovery funnel is respectively connected to the feed port pipeline of the crystal transformation reactor, and a discharge valve is arranged below each collecting funnel and each recovery funnel; the feed liquid containing energetic crystals is controlled by the circulating pump to circulate from the liquid inlet of the screening box toward the liquid outlet, so that the energetic crystals in the feed liquid fall into each collecting funnel and the recovery funnel respectively by their own weight, the specific particle size crystals in each collecting funnel enter the corresponding product collecting tank through the pipeline, and the non-specific particle size crystals in each recovery funnel enter the crystal transformation reactor through the pipeline.

[0010] Each pair of partitions is in an inclined fixed structure with a small spacing at the upper end and a large spacing at the lower end, which is used to improve the narrow distribution index of the particle size in the crystal conversion product.

[0011] The collecting funnel is a cone structure that converges downward.

[0012] Working process

[0013] First, fill the screening box with solvent, then turn on the circulation pump, so that the liquid containing energetic crystals in the crystal conversion reactor enters the screening box from the liquid inlet of the screening box, and then flows toward the liquid outlet of the screening box at a certain flow rate, and refluxes to the crystal conversion reactor; the energetic crystals in the liquid slide downward in a parabola under the action of gravity while moving horizontally with the liquid in the screening box. Since the particle size of the energetic crystals in the liquid is different, the energetic crystals will show different falling distances according to the size of the particle size. By controlling the flow rate of the liquid, the energetic crystals of a specific particle size enter the collection funnel below the crystal recovery area, while the energetic crystals of non-specific particle size enter each recovery funnel. When all the energetic crystals in the crystal transformation reactor enter the screening box, the circulation pump is closed, and the discharge valves under each collecting funnel are opened respectively, so that the energetic crystals of specific particle size enter the corresponding product collecting tank respectively; then the discharge valves under each recovery funnel are opened, so that the energetic crystals of non-specific particle size in each recovery funnel are returned to the crystal transformation reactor through the pipeline, and the energetic crystals in the crystal transformation reactor are transformed again; since the distribution of the particle size range of the energetic crystals in the crystal transformation reactor always presents a normal distribution, when the proportion of energetic crystals of a specific particle size in the feed liquid decreases, the crystal transformation operation will re-convert the energetic crystals of this particle size range, so that the crystal transformation product can obtain more energetic crystals of a specific particle size range.

[0014] Beneficial Effects

[0015] The energetic crystal particle size screening device of the present invention has a simple structure and is easy to operate, and can quickly implement particle size screening of energetic crystals in a feed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a device for collecting energetic crystals of specific particle size according to the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the screening box in the device for collecting energetic crystals of specific particle size of the present invention;

[0018] Figure 3 for Figure 2 AA section view;

[0019] In the figure, 1-screening box, 11-liquid inlet, 12-liquid outlet, 13-partition, 14-collecting funnel, 15-screening box, 2-crystal conversion reactor, 3-product collecting tank, 4-circulation pump, 5-discharge valve. DETAILED DESCRIPTION

[0020] The content of the present invention is further described below in conjunction with the drawings and embodiments.

[0021] Example

[0022] like Figure 1 As shown, a device for collecting energetic crystals of specific particle size of the present invention comprises a crystal transformation reaction kettle 2, a screening box 1 and a product collection tank 3;

[0023] like Figure 2-3 As shown, the screening box 1 includes a screening box body 15 of a rectangular parallelepiped structure, a liquid inlet 11 arranged on the left side above the screening box body 15, a liquid outlet 12 arranged on the right side above the screening box body 15, two pairs of partitions 13 of the same height fixed on the upper surface of the bottom plate of the screening box body 15, and a collecting funnel 14 and a recovery funnel 16 with openings connected below the bottom plate of the screening box body 15;

[0024] Two pairs of partitions 13 separate the bottom of the screening box 15 into two specific particle size collection areas and three crystal recovery areas, two collecting funnels 14 are respectively arranged below the two specific particle size collection areas, and three recovery funnels 16 are respectively arranged below the three crystal recovery areas;

[0025] The liquid inlet 11 of the screening box 1 is connected to the discharge port pipeline of the crystal transformation reactor 2, the liquid outlet 12 of the screening box 1 is connected to the feed port pipeline of the crystal transformation reactor 2, and a circulation pump 4 is arranged on the connecting pipeline between the liquid outlet 12 of the screening box 1 and the feed port of the crystal transformation reactor 2; the bottoms of the two collecting funnels 14 are respectively connected to a product collecting tank 3 through a pipeline, and the bottoms of the three recovery funnels 16 are respectively connected to the feed port pipeline of the crystal transformation reactor 2, and the two collecting funnels 1 4 and the three recovery funnels 16 are provided with a discharge valve 5; the circulating pump 4 controls the feed liquid containing energetic crystals to circulate from the liquid inlet 11 of the screening box 1 to the liquid outlet 12, so that the energetic crystals in the feed liquid fall into each collecting funnel 14 and the recovery funnel 16 by their own weight, and the specific size crystals in the two collecting funnels 14 enter the corresponding product collecting tank 3 through the pipeline, and the non-specific size crystals in the three recovery funnels 16 enter the crystal conversion reactor 2 through the pipeline.

[0026] The two pairs of partitions 13 are both in an inclined fixed structure with a small spacing at the upper end and a large spacing at the lower end, which is used to improve the narrow distribution index of the particle size in the crystal transformation product.

[0027] The collecting funnel 14 is a cone structure that converges downward.

[0028] First, fill the screening box 1 with solvent, then turn on the circulation pump 4, so that the liquid containing energetic crystals in the crystal conversion reactor 2 enters the screening box body 15 from the liquid inlet 11 of the screening box 1, and then flows toward the liquid outlet 12 of the screening box 1 at a certain flow rate, and refluxes to the crystal conversion reactor 2; the energetic crystals in the liquid slide downward in a parabola under the action of gravity while moving horizontally with the liquid in the screening box body 15. Since the particle size of the energetic crystals in the liquid is different, the energetic crystals will show different falling distances according to the size of the particle size. By controlling the flow rate of the liquid, the energetic crystals of a specific particle size enter the collection funnel 14 below the crystal recovery area, while the energetic crystals of non-specific particle size enter each recovery funnel 16. After all the energetic crystals in the crystal transformation reactor 2 enter the screening box 1, the circulation pump 4 is closed, and the discharge valves 5 under each collecting funnel 14 are opened respectively, so that the energetic crystals of specific particle size enter the corresponding product collecting tank 3 respectively; then the discharge valves 5 under each recovery funnel 1 are opened, so that the energetic crystals of non-specific particle size in each recovery funnel 16 are returned to the crystal transformation reactor 2 through the pipeline, and the energetic crystals in the crystal transformation reactor 2 are transformed again; since the distribution of the particle size range of the energetic crystals in the crystal transformation reactor 2 always presents a normal distribution, when the proportion of energetic crystals of a specific particle size in the feed liquid decreases, the crystal transformation operation will re-convert the energetic crystals of this particle size range, so that the crystal transformation product can obtain more energetic crystals of a specific particle size range.

Claims

1. A device for collecting energetic crystals of specific particle size, characterized in that: It includes a crystallization reactor, a screening box and a product collecting tank; The screening box comprises a screening box body of a rectangular parallelepiped structure, a liquid inlet arranged on the left side above the screening box body, a liquid outlet arranged on the right side above the screening box body, at least one pair of partitions of the same height fixed on the upper surface of the screening box body bottom plate, and a collecting funnel and a recovery funnel with openings connected to the bottom of the screening box body bottom plate; The inner side of each pair of partitions separates a specific particle size collection area from the bottom of the screening box, and the outer side of each pair of partitions is a crystal recovery area. Each collection funnel is respectively arranged below each specific particle size collection area, and each recovery funnel is respectively arranged below each crystal recovery area; The liquid inlet of the screening box is connected to the discharge port pipeline of the crystal transformation reactor, the liquid outlet of the screening box is connected to the feed port pipeline of the crystal transformation reactor, and a circulating pump is arranged on the connecting pipeline between the liquid outlet of the screening box and the feed port of the crystal transformation reactor; the bottom of each collecting funnel is connected to a product collecting tank through a pipeline, the bottom of each recovery funnel is respectively connected to the feed port pipeline of the crystal transformation reactor, and a discharge valve is arranged below each collecting funnel and each recovery funnel; the feed liquid containing energetic crystals is controlled by the circulating pump to circulate from the liquid inlet of the screening box toward the liquid outlet, so that the energetic crystals in the feed liquid fall into each collecting funnel and the recovery funnel respectively by their own weight, the specific particle size crystals in each collecting funnel enter the corresponding product collecting tank through the pipeline, and the non-specific particle size crystals in each recovery funnel enter the crystal transformation reactor through the pipeline.

2. The device for collecting energetic crystals of specific particle size as claimed in claim 1, characterized in that: Each pair of partitions is in an inclined fixed structure with a small spacing at the upper end and a large spacing at the lower end.

3. The device for collecting energetic crystals of specific particle size as claimed in claim 1, characterized in that: The collecting funnel is a cone structure that converges downward.

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