Gunpowder drying machine

Abstract

The utility model discloses a gunpowder drying machine. Comprising a drying box, a wet powder belt conveying mechanism arranged at the front end of the drying box, a belt set mechanism arranged in the drying box and connected with the wet powder belt conveying mechanism, a heat exchange mechanism, a hot air mechanism and a dry powder belt conveying mechanism arranged at the tail end of the drying box and connected with the wet powder belt conveying mechanism. The drying device is simple in structure, safety is improved through water flow heat exchange and hot air double drying, and the drying effect is good; a belt set mechanism is adopted in the drying box, the production line is short, the occupied area is small, the production takt is few, and the operation efficiency of equipment is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of fireworks machinery, specifically relating to a gunpowder dryer. Background Technology

[0002] Single-base powder (commonly known as 128 powder) in gunpowder is made by directly crushing retired single-base propellant and is widely used in the production of fireworks, firecrackers and other types of civil explosive products.

[0003] In existing technologies, the drying of single-base powders is mostly carried out manually, which poses safety hazards and low production efficiency. Mechanical methods are also used for drying single-base powders. For example, Chinese patent (CN 202709649 U) discloses an air-powered pyrotechnic dryer, which includes operating equipment, a power cabinet, a drying chamber, and connecting devices. The operating equipment is a command center, including a programmable controller, a human-machine interface control system, and a temperature and humidity curve control system. The power cabinet provides power to the operating equipment, including a heat pump, a compressor, and a fan. The heat pump converts electrical energy into mechanical energy. The drying chamber is made of insulation material, and heating and dehumidification pipes are installed inside. An explosion-proof dehumidification device and a dehumidifier are installed inside the drying chamber. The connecting device is an RS485 communication module, and the explosion-proof dehumidification device is connected to the programmable controller through the RS485 communication module. This type of dryer has the following shortcomings: First, the aforementioned patent requires a separate insulated room; second, the equipment's circuitry and control system are complex, there are many operational steps, the production line is long, it occupies a large area, and its production efficiency is limited. Utility Model Content

[0004] The purpose of this invention is to provide a gunpowder dryer with a simple structure.

[0005] The technical solution adopted to achieve the purpose of this utility model is as follows:

[0006] The gunpowder dryer provided by this utility model includes a drying chamber, a wet powder conveyor belt mechanism located at the front end of the drying chamber, a belt assembly mechanism connected to the wet powder conveyor belt mechanism located inside the drying chamber, a heat exchange mechanism and a hot air mechanism, and a dry powder conveyor belt mechanism located at the rear end of the drying chamber connected to the wet powder conveyor belt mechanism.

[0007] The wet powder conveyor belt mechanism includes a feed hopper located at the front end of the drying chamber and a conveyor belt connected to the feed hopper.

[0008] The drying chamber includes an insulated outer cover for heat preservation and a dehumidification vent located on top of the insulated outer cover for air exhaust.

[0009] The belt assembly mechanism includes multiple layers of drying belts arranged in an alternating pattern. Each drying belt is fixed to the support by rollers and is synchronously driven by a drive motor.

[0010] The heat exchange mechanism includes several radiators fixed on the support and located in the middle of each drying belt. The radiators are connected to the insulated water tank located outside the drying chamber through hot water inlet pipes and hot water return pipes to form a circulation pipeline.

[0011] The radiator is divided into several heat exchange groups. The front and rear ends of the radiator in each heat exchange group are connected by metal pipes. The front end of the bottom radiator is connected to the hot water inlet pipe through an inlet branch pipe and a pipe connector. The rear end of the top radiator is connected to the hot water return pipe through a return branch pipe and a pipe connector.

[0012] A heating rod is installed inside the insulated water tank, and a water inlet valve is installed at the top of the insulated water tank. The power source for the water circulation in the circulation pipeline is located next to the insulated water tank.

[0013] The hot air mechanism is located on one side of the drying belt and includes a hot air outlet pipe fixed on the bracket with air outlet holes evenly distributed on one side of the drying belt. The hot air outlet pipe is connected to a hot air fan located outside the drying chamber through an air inlet pipe. Beneficial effects

[0014] Compared with existing technologies, this utility model has a simple structure and improves safety and drying effect through dual drying of water flow heat exchange and hot air. The drying chamber adopts a belt conveyor mechanism, resulting in a shorter production line, smaller footprint, and fewer production cycles, effectively improving the operating efficiency of the equipment. At the same time, the compact structure of the equipment simplifies the operation of personnel, saves manpower, and improves efficiency.

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the utility model after the outer cover has been removed.

[0018] Figure 3 This is a partial structural schematic diagram of the present invention.

[0019] Figure 4 This is a schematic diagram of the heat exchange mechanism of this utility model.

[0020] Figure 5 This is a partial schematic diagram of the heat exchange mechanism.

[0021] Figure 6 This is a partial enlarged view of the present invention.

[0022] Figure 7 This is a partial schematic diagram of the hot air mechanism. Detailed Implementation

[0023] See Figure 1 The gunpowder dryer provided by this utility model includes a drying chamber 2, a wet powder conveyor belt mechanism 1 located at the front end of the drying chamber 2, a belt assembly mechanism 6 located inside the drying chamber 2 and connected to the wet powder conveyor belt mechanism 1, a heat exchange mechanism 3 and a hot air mechanism 4, and a dry powder conveyor belt mechanism 5 located at the rear end of the drying chamber 2 and connected to the wet powder conveyor belt mechanism 1.

[0024] The wet powder conveyor belt mechanism 1 is as follows Figure 1 As shown, it includes a feed hopper 102 located on the front end of the drying chamber 2 and a conveyor belt 101 connected to the feed hopper 102.

[0025] The drying oven 2 is as follows Figure 1 As shown, it includes an insulation cover 201 for heat preservation and a vent 202 located on the top of the insulation cover 201 for ventilation.

[0026] See Figure 2 , Figure 3 The belt assembly mechanism 6 consists of multiple layers of drying belts 602 arranged in an alternating manner. Each drying belt 602 is fixed to the bracket 601 by a roller 603. One side of the roller 603 located at the front end of the drying chamber 2 is connected to the shaft of the synchronous pulley 604. Each synchronous pulley 604 is connected to the drive motor 606 through an annular synchronous belt 605 and an idler pulley 607 for tensioning the annular synchronous belt 605.

[0027] See Figure 2 —6. The heat exchange mechanism 3 includes several grid-shaped radiators 307 fixed on the support 601 and located in the middle of each layer of drying belt 602, divided into three heat exchange groups. The front and rear ends of the radiators 307 in each heat exchange group are connected by metal pipe fittings 311. The front end of the bottom radiator 307 is connected to the hot water inlet pipe 305 through the inlet branch pipe 309 and the pipe connector 308. The rear end of the top radiator 307 is connected to the pipe through the return branch pipe 310 and the pipeline. The connector (not shown in the figure) is connected to the hot water return pipe 306; the hot water inlet pipe 305 and the hot water return pipe 306 are connected to the insulated water tank 301 located outside the drying oven 2 to form a circulation pipeline. A heating rod 302 is installed inside the insulated water tank 301 and fixed to one side of the upper part of the insulated water tank 301. A water inlet valve 304 is installed on the upper part of the insulated water tank 301 to add water to the water tank. The water circulation power source 303 (water pump) that provides water circulation power for the movement of hot water in the circulation pipeline is located next to the insulated water tank 301.

[0028] See Figure 2 , Figure 3 and Figure 7 The hot air mechanism 4 is located on one side of the drying belt 602 and includes a hot air outlet pipe 403 fixed on the bracket 601 and having air outlet holes 404 evenly distributed on one side of the drying belt 602. The hot air outlet pipe 403 is connected to a hot air blower 401 located outside the drying chamber 2 through an air inlet pipe 402.

[0029] During operation, the equipment starts up, and the heating rod 302 heats the water in the insulated water tank 301 to about 95 degrees Celsius. The water circulation power source 303 starts and pumps hot water through pipelines to the radiator 307. The hot air blower 401 starts simultaneously, sending hot air into the insulated outer cover 201 through the air inlet pipe 402 and the hot air outlet pipe 403. The conveyor belt 101 of the wet powder conveyor mechanism 1 feeds the wet powder of the single base powder through the feed hopper 102 onto the uppermost drying belt 602 of the belt assembly mechanism 6. The drive motor 2... 08. All drying belts 602 are driven simultaneously by the annular synchronous belt 207 and each synchronous pulley 206. The wet powder is conveyed from the front end to the rear end of the upper drying belt 602 and then falls into the front end of the lower drying belt 602. It passes through each drying belt 602 from top to bottom. During this process, it is heated by both the radiator 307 of the heat exchange mechanism 3 and the hot air blown out by the hot air outlet 403 of the hot air mechanism 4. The moisture it contains is evaporated and discharged through the exhaust port 202 on the top of the heat insulation cover 201. The wet powder finally falls onto the dry powder belt conveyor mechanism 5 to complete the drying of the single base powder.

[0030] When the heat exchange mechanism 3 is working, the hot water in the insulated water tank 301 is distributed to each heat exchange group through the hot water inlet pipe 305 and the inlet branch pipe 309 under the action of the water circulation power source 303. The hot water enters the front end of the bottom radiator 307 and enters the front end of each radiator 307 through the metal pipe fitting 311. Then it flows out from the rear end of each radiator 307 and finally returns to the insulated water tank 301 through the rear end of the top radiator 307 via the return branch pipe 310 and the hot water return pipe 306.

Claims

1. A powder drying machine characterized by It includes a drying chamber, a wet powder conveyor belt mechanism located at the front end of the drying chamber, a belt assembly mechanism connected to the wet powder conveyor belt mechanism located inside the drying chamber, a heat exchange mechanism and a hot air mechanism, and a dry powder conveyor belt mechanism located at the rear end of the drying chamber connected to the wet powder conveyor belt mechanism.

2. The powder dryer of claim 1, wherein The wet powder conveyor belt mechanism includes a feed hopper located at the front end of the drying chamber and a conveyor belt connected to the feed hopper.

3. The gunpowder dryer according to claim 1, characterized in that: The drying chamber includes an insulated outer cover for heat preservation and a dehumidification vent located on top of the insulated outer cover for air exhaust.

4. The gunpowder dryer according to claim 1, characterized in that: The belt assembly mechanism includes multiple layers of drying belts arranged in an alternating pattern. Each drying belt is fixed to the support by rollers and is synchronously driven by a drive motor.

5. The gunpowder dryer according to claim 1, characterized in that: The heat exchange mechanism includes several radiators fixed on the support and located in the middle of each drying belt. The radiators are connected to the insulated water tank located outside the drying chamber through hot water inlet pipes and hot water return pipes to form a circulation pipeline.

6. The gunpowder dryer according to claim 5, characterized in that: The radiator is divided into several heat exchange groups. The front and rear ends of the radiator in each heat exchange group are connected by metal pipes. The front end of the bottom radiator is connected to the hot water inlet pipe through an inlet branch pipe and a pipe connector. The rear end of the top radiator is connected to the hot water return pipe through a return branch pipe and a pipe connector.

7. The gunpowder dryer according to claim 5, characterized in that: A heating rod is installed inside the insulated water tank, and a water inlet valve is installed at the top of the insulated water tank. The power source for the water circulation in the circulation pipeline is located next to the insulated water tank.

8. The gunpowder dryer according to claim 4, characterized in that: The hot air mechanism is located on one side of the drying belt and includes a hot air outlet pipe fixed on the bracket with air outlet holes evenly distributed on one side of the drying belt. The hot air outlet pipe is connected to a hot air fan located outside the drying chamber through an air inlet pipe.

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