Iron powder drying and mixing device

Abstract

The utility model discloses an iron powder drying and mixing device which comprises a feeding assembly, a hot air generating assembly, a roller assembly, a cyclone separator and a discharging assembly. The roller assembly comprises a feeding end, a roller, two driving gear assemblies, a discharging end and an inner spiral rotating shaft assembly. The discharge end is provided with an air outlet and a discharge port which are respectively connected to the cyclone separator and the discharge assembly; and a solid material outlet of the cyclone separator is connected to the discharging assembly. Drum-type drying equipment is adopted for drying iron powder, the small-size drum is adopted, and through the arrangement of the inner spiral rotating shaft, the scattering effect of the iron powder in the drum can be effectively improved through the differential rotating speed of the spiral rotating shaft and the drum while the iron powder in the drum is prevented from being gathered; effective drying efficiency is guaranteed while the equipment size is reduced, overflowing waste gas is treated through the cyclone separator, and fine particles in the waste gas can be recycled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fuse, concretely is a kind of iron powder drying mixing device. BACKGROUND

[0002] In the production and manufacturing process of hand grenade, iron powder is used as an important additive agent, and the humidity control before use is an important link. In order to ensure the quality and performance of hand grenade, the iron powder must be dried. Due to the high density characteristics of iron powder, in order to ensure the safe and stable operation of the equipment, the amount of iron powder to be dried is usually limited when using traditional drum drying equipment, which limits the full use of the space of the drum drying equipment. In addition, during the process of iron powder drying, a large amount of fine particles will overflow with the hot gas medium, and if not properly treated, these substances will cause waste of resources and may also have some impact on the environment. SUMMARY

[0003] The utility model aims at providing a kind of iron powder drying mixing device to solve the problems in prior art.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model provides a kind of iron powder drying mixing device,

[0005] The utility model discloses a kind of iron powder drying mixing devices, which can realize the drying and mixing of iron powder, and can realize the separation of fine particles, so as to solve the problems in prior art.

[0006] Further, the inner helical shaft assembly includes a driving motor, two end supports and a helical shaft. The end supports are arranged on the ground, the helical shaft is rotatably connected to the end supports, and the helical shaft is arranged in the center of the drum and connected to the driving motor on one side.

[0007] Further, an array of lifting plates is arranged inside the drum, and the helical shaft is arranged in the inner region of the lifting plates.

[0008] Further, a plurality of through holes are arranged on the helical blades of the helical shaft, and the axis of the through holes is parallel to the axis of the drum.

[0009] Further, an air push flow cylinder is arranged between the air outlet and the cyclone separator, the air push flow cylinder comprises an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are hollow tubular structures; the air inlet pipe is connected to the air outlet arranged at the discharge end through an air pipe, and the air outlet pipe is connected to the cyclone separator through an air pipe; the inner hole of the air inlet pipe is a trumpet hole, the inner diameter of the air inlet pipe close to the air outlet pipe is smaller, the inner part of the air outlet pipe is a stepped hole, a compressed air distribution groove is arranged at the junction of the two holes, and the compressed air distribution groove is connected to a compressed air source through a compressed air inlet.

[0010] Further, wear-resistant convex strips are arranged in an array on the inner side of the air inlet pipe.

[0011] Further, one of the stepped holes of the air outlet pipe is a circular hole, and the other is a trumpet hole; the other end of the air inlet pipe is inserted into the circular hole of the air outlet pipe and connected through a threaded structure, and gaps are arranged at the junctions of the end of the air inlet pipe and the circular hole and the trumpet hole of the air outlet pipe.

[0012] Further, the inner diameter of the trumpet hole of the air outlet pipe close to the air inlet pipe is smaller, and the inner diameter of the air inlet pipe close to the end of the air outlet pipe is equal to the inner diameter of the side of the stepped hole of the air outlet pipe with a smaller inner diameter.

[0013] The drum type drying equipment is adopted to perform the drying operation of the iron powder, small-size drums are adopted, through the arrangement of the inner spiral rotating shaft, the gathering of the iron powder in the drum is avoided, the differentiated rotating speeds of the spiral rotating shaft and the drum can effectively improve the scattering effect of the iron powder in the drum, the effective drying efficiency is ensured while the equipment size is reduced, the overflow waste gas is treated by the cyclone separator, and the fine particles in the waste gas can be recycled. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a drum assembly schematic view of the utility model.

[0015] Figure 2 is a whole scheme schematic view of the utility model.

[0016] Figure 3 is a drum assembly partial cutaway schematic view of the utility model.

[0017] Figure 4 is an air push flow cylinder schematic view of the utility model.

[0018] Figure 5 is an air push flow cylinder cutaway schematic view of the utility model. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] As shown in the accompanying Figure 1 , 2 , the iron powder drying and mixing device relates to an iron powder drying and mixing device which comprises a feeding assembly 1, a hot gas generating assembly 3, a roller assembly 2, a cyclone separator 4 and a discharging assembly 5.

[0021] The feeding assembly 1 comprises a feeding port and a spiral conveying shaft, and a crushing roller is arranged at the feeding port and used for preliminarily crushing the agglomerates in the iron powder.

[0022] The hot gas generating assembly 3 is used for generating hot gas, which is then conveyed to the roller assembly 2 through a pipeline.

[0023] The roller assembly 2 is provided with an air outlet at the discharging end, is connected to the cyclone separator 4, and the solid material outlet of the cyclone separator 4 is connected to the discharging assembly 5, which is a spiral conveying shaft.

[0024] The feeding assembly 1, the hot gas generating assembly 3, the cyclone separator 4 and the discharging assembly 5 are commercially available products, and the specific structures thereof do not belong to the protection content of the present application.

[0025] As shown in the accompanying Figure 2 , 3 , the roller assembly 2 comprises a feeding end 21, a roller 22, two groups of driving gear assemblies 23, a discharging end 24 and an inner spiral rotating shaft assembly 25.

[0026] The driving gear assembly 23 comprises a gear ring arranged on the roller 22 and a driving motor and a gear matched with the gear ring. The discharging end 24 is provided with an air outlet and a discharging port, and is connected to the cyclone separator 4 and the discharging assembly 5 respectively. The specific structures of the feeding end 21, the driving gear assembly 23 and the discharging end 24 are conventional knowledge in the art, and do not belong to the protection content of the present application.

[0027] The inner spiral rotating shaft assembly 25 comprises a driving motor 251, two end supports 252 and a spiral shaft 253, wherein the end supports 252 are arranged on the ground, the spiral shaft 253 is rotationally matched with the end supports 252 at both ends, the spiral shaft 253 is arranged in the center of the roller 22, and one side is connected with the driving motor 251.

[0028] Inside the drum 22, there are arrayed lifting plates 221. One end of the lifting plate 221 is fixed to the inner wall of the drum 22, and a spiral shaft 253 is provided in the inner area of ​​the drum 22 between the other ends of the lifting plates 221.

[0029] When in use, the spiral shaft 253 can remain stationary, or it can rotate relative to the roller 22 in different directions and at different speeds.

[0030] The presence of the spiral shaft further separates the iron powder inside, reducing its aggregation and allowing the drum to be smaller (diameter). Simultaneously, the relative movement between the spiral shaft 253 and the drum 22 also helps to disperse the iron powder.

[0031] Furthermore, to facilitate the flow of hot gas medium inside the drum, multiple through holes 2531 are provided on the spiral blades of the spiral shaft, with the axis of the through holes parallel to the axis of the drum 22.

[0032] As attached Figure 1 , 4 As shown in Figure 5, in order to improve the efficiency of gas flowing out of the outlet from the drum, an air propulsion cylinder 6 is provided between the outlet and the cyclone separator 4. It should be noted that the air propulsion cylinder 6 operates intermittently and needs to cooperate with the hot gas generating component 3 to blow in high-temperature gas. For example, a large amount of high-humidity gas is discharged through rapid exhaust during a specific period of the drying process. The specific control process is not the subject of this application.

[0033] The air propulsion cylinder 6 includes an air inlet pipe 61 and an air outlet pipe 62, both of which are hollow tubular structures. The air inlet pipe 61 is connected to the discharge end 24 via an air duct and has an air outlet. The air outlet pipe 62 is connected to the cyclone separator 4 via an air duct. The inner hole of the air inlet pipe 61 is a trumpet-shaped hole, with a smaller inner diameter on the side near the air outlet pipe 62. To reduce wear from iron powder, an array of anti-wear protrusions 611 are provided on the inner side of the air inlet pipe 61. The interior of the air outlet pipe 62 is stepped, with one round hole 62a and one trumpet-shaped hole 62b. A compressed air distribution groove 621 is provided at the junction of the two holes, and the compressed air distribution groove 621 is connected to a compressed air source via a compressed air inlet 622. The other end of the intake pipe 61 is inserted into the round hole of the outlet pipe 62 and connected by a threaded structure. A gap is provided at the junction of the end of the intake pipe 61, the round hole of the outlet pipe 62, and the flared hole, so that the compressed air in the compressed air distribution groove 621 can flow out through the gap. The inner diameter of the flared hole of the outlet pipe 62 is smaller at the end near the intake pipe 61, and the inner diameter of the end of the intake pipe 61 near the outlet pipe 62 is equal to the inner diameter of the smaller side of the stepped hole of the outlet pipe 62.

[0034] When the high-speed compressed air flows out from the gap, the exhaust gas on the side of the air inlet pipe 61 is driven to flow to the cyclone separator quickly, so that a good exhaust effect is achieved, and since there is no movable part, compared with the structure of the axial flow fan, it is more suitable for the application scene of high dust of the application.

[0035] It should be noted that unless specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. A kind of iron powder drying mixing device, including feed assembly, hot gas generation assembly, drum assembly, cyclone separator, discharge assembly, the feed assembly includes feed port, screw conveying shaft, is provided with crushing roller at feed port;The hot gas generation assembly is communicated to drum assembly by pipeline, and discharge assembly is screw conveying shaft;Its characterized in that, The drum assembly comprises a feeding end, a drum, two groups of driving gear assemblies, a discharging end, an inner helical shaft assembly; the discharging end is provided with an air outlet and a discharging port, which are connected to a cyclone separator and a discharging assembly respectively; the solid material outlet of the cyclone separator is connected to the discharging assembly.

2. The iron powder drying and mixing apparatus according to claim 1, wherein The inner helical shaft assembly comprises a driving motor, two end supports and a helical shaft, wherein the end supports are arranged on the ground, the helical shaft is rotatably connected to the end supports, and the helical shaft is arranged in the center of the drum and connected to the driving motor on one side.

3. The iron powder drying and mixing apparatus according to claim 2, wherein An array of lifting plates is arranged in the drum.

4. The apparatus of claim 3, wherein the apparatus further comprises a second magnet disposed on the second side of the housing. A plurality of through holes are arranged on the helical blades of the helical shaft, and the axes of the through holes are parallel to the axis of the drum.

5. The iron powder drying and mixing apparatus of claim 1, wherein An air push flow cylinder is arranged between the air outlet and the cyclone separator, the air push flow cylinder comprises an air inlet pipe and an air outlet pipe, which are hollow tubular structures; the air inlet pipe is connected to the air outlet of the discharging end through an air pipe, and the air outlet pipe is connected to the cyclone separator through an air pipe; the inner hole of the air inlet pipe is a horn hole, the inner diameter of which is smaller near the air outlet pipe; the inner part of the air outlet pipe is in the shape of a stepped hole, and a compressed air distribution groove is arranged at the junction of the two holes, which is connected to a compressed air source through a compressed air inlet.

6. The iron powder drying and mixing apparatus according to claim 5, wherein An array of wear-resistant convex strips is arranged on the inner side of the air inlet pipe.

7. The apparatus of claim 5, wherein the apparatus further comprises a mixing device. One of the stepped holes in the air outlet pipe is a circular hole, and the other is a horn hole; the other end of the air inlet pipe is inserted into the circular hole of the air outlet pipe and connected through a threaded structure; gaps are arranged at the junctions of the end of the air inlet pipe and the circular hole and the horn hole of the air outlet pipe.

8. The iron powder drying and mixing apparatus of claim 5, wherein The inner diameter of the horn hole of the air outlet pipe near the end of the air inlet pipe is smaller, and the inner diameter of the end of the air inlet pipe near the air outlet pipe is equal to the inner diameter of the side with smaller inner diameter of the stepped hole of the air outlet pipe.

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