Mixing bin for molding powder processing

Abstract

The utility model discloses a mixing bin for molding powder processing, which comprises a mixing bin body, a powder inlet pipe and a powder outlet pipe, the powder inlet pipe and the powder outlet pipe are arranged on the mixing bin body, the bin body comprises a bin body I and a bin body II connected through a powder feeding pipe, a multi-stage screening unit is arranged in the bin body I, and screened molding powder raw materials enter the powder feeding pipe through the screening unit. The powder feeding pipe is connected with an induced draft fan in series; a reinforced stirring unit is arranged in the bin body II and is used for stirring molding powder raw materials conveyed by the induced draft fan; the powder inlet pipe is fixedly connected to the upper end of the first bin body, the powder outlet pipe is fixedly connected to the lower end of the second bin body, one end of the powder feeding pipe is fixedly connected to the lower end of the first bin body, and the other end of the powder feeding pipe is fixedly connected to the upper end of the second bin body. The plastic powder stirring device belongs to the technical field of plastic powder processing devices, improves the stirring efficiency and effect, and is high in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic powder processing equipment, and particularly relates to a mixing bin for plastic powder processing. Background Art

[0002] Plastic powder is a processing technology raw material obtained by spraying plastic powder onto the surface of a material through compressed air after high-temperature heating. During the processing of plastic powder, it needs to be mixed and stirred in a specific proportion to meet the corresponding process requirements. Moreover, for the existing processing technology, if screening with a certain particle size can be carried out before mixing and stirring, the process level can be improved.

[0003] For example, the existing patent "A mixing bin for plastic powder processing" (patent number: CN 212636194 U) discloses a mixing bin for processing, which realizes the function of improving the uniformity during the stirring process by setting a differential rotation stirring mechanism. However, it has certain technical defects, that is, it cannot screen and classify the raw materials to a certain extent before stirring, and due to the rotation frame set in the bin body in the differential stirring mechanism, when the rotation speed is relatively high during the rotation of the rotation frame, there is a possibility that the overall structural connection relationship is unstable, resulting in poor stability of the overall device.

[0004] Therefore, if the above problems can be solved, it will bring great benefits to the development of the plastic powder process. Content of the Utility Model

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a plastic powder processing device capable of solving the above technical problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A mixing bin for plastic powder processing includes a mixing bin body and a powder inlet pipe and a powder outlet pipe arranged thereon. The bin body includes a first bin body and a second bin body connected by a powder delivery pipe. A multi-stage screening unit is arranged in the first bin body, and the screened plastic powder raw materials enter the powder delivery pipe through the screening unit. An induced draft fan is connected in series on the powder delivery pipe. A strengthened stirring unit is arranged in the second bin body, and the stirring unit stirs the plastic powder raw materials conveyed by the induced draft fan. The powder inlet pipe is fixedly connected to the upper end of the first bin body, the powder outlet pipe is fixedly connected to the lower end of the second bin body, one end of the powder delivery pipe is fixedly connected to the lower end of the first bin body, and the other end of the powder delivery pipe is fixedly connected to the upper end of the second bin body.

[0008] Furthermore, the screening unit includes a number of grading meshes with different pore diameters distributed thereon. The grading meshes are fixedly connected to the inner wall of the first bin body through their sides. The pore diameters of the filter holes gradually become smaller on different grading meshes. One end of the powder delivery pipe is close to the right side direction of the first bin body, and the powder delivery pipe is distributed in a serpentine shape.

[0009] Further, the induced draft fan is distributed on the powder feeding pipe in the direction close to the second bin body. A first cover body is hinged to the upper end of the first bin body, and the lower end of the powder feeding pipe extends to the left side position of the first bin body through the first cover body; the upper end of the grading net is flush with the upper end of the first bin body.

[0010] Further, the second bin body is provided to include an upper cylindrical section and a lower hemispherical structure. The enhanced stirring unit includes a stirring shaft and double-direction stirring blades connected to the surface of the stirring shaft. The stirring blades are all distributed in a spiral shape and are respectively in clockwise and counterclockwise directions; the powder outlet pipe extends outward from the lower hemispherical structure part.

[0011] Further, a flip-type upper second cover body is movably connected to the upper end of the second bin body. The upper end of the stirring shaft extends to the outside of the second bin body, and an electric driving unit is axially connected to the upper end of the stirring shaft for driving the stirring shaft to rotate; a sealing gasket is provided between the second cover body and the upper end surface of the second bin body, and a sound insulation layer is fixedly connected to the lower end surface of the second cover body.

[0012] Further, the electric driving unit includes a driving motor. The sound insulation layer is arranged as a flexible layer with uniformly distributed sound absorption holes, and it is bonded to the second cover body; the second cover body and the second bin body are connected through a turning shaft.

[0013] Further, a protective tank body is sleeved outside the first bin body and the second bin body, and both the powder inlet pipe and the powder outlet pipe pass through the side part of the protective tank body.

[0014] After adopting the above structure, the beneficial effects of the present utility model are as follows:

[0015] By setting the stirring unit into an enhanced structure, the stirring force on the plastic raw materials is improved, the processing cycle is shortened, and the processing efficiency is improved;

[0016] On this basis, by setting the enhanced stirring unit into a structure with double-direction stirring blades, not only can the plastic powder materials be mixed more evenly, but also the stirring blades in this structure can reduce the local material retention due to the double-direction form, and the connection relationship between components is relatively stable, prolonging the overall service life;

[0017] By setting the bin body for storing materials into a combined form with the first bin body and the second bin body, the functions of convenient assembly, disassembly and maintenance are achieved, and the replaceability is strong;

[0018] The first bin body and the second bin body are connected by a powder feeding pipe distributed in a snake shape, so that on the basis of realizing the basic function of convenient transportation, the material backflow or impact during the start-up and shutdown processes of the whole device can be reduced. Description of the Drawings

[0019] The accompanying drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0020] Figure 1 Schematic diagram of an embodiment of the present utility model Figure 1 ;

[0021] Figure 2 Schematic diagram of an embodiment of the present utility model Figure 2 ;

[0022] Figure 3 Schematic diagram of the enhanced stirring unit in the embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of partial parts in the embodiment of the present utility model.

[0024] In the accompanying drawings:

[0025] 1. Powder inlet pipe, 2. Powder outlet pipe, 3. First storage body, 4. Powder delivery pipe, 5. Second storage body, 6. Classification screen, 7. Stirring shaft, 8. Stirring blade, 9. First cover body, 10. Second cover body, 11. Driving motor. Specific implementation manner

[0026] Combined with the attached Figure 1 , a mixing bin for plastic powder processing, comprising a mixing bin body and a powder inlet pipe 1 and a powder outlet pipe 2 arranged thereon. The bin body includes a first storage body 3 and a second storage body 5 connected by a powder delivery pipe 4. A multi-stage screening unit is arranged in the first storage body 3, and the screened plastic powder raw materials enter the powder delivery pipe 4 through the screening unit. An induced draft fan is connected in series on the powder delivery pipe 4. An enhanced stirring unit is arranged in the second storage body 5, and the stirring unit stirs the plastic powder raw materials conveyed by the induced draft fan. The powder inlet pipe 1 is fixedly connected to the upper end of the first storage body 3, the powder outlet pipe 2 is fixedly connected to the lower end of the second storage body 5, one end of the powder delivery pipe 4 is fixedly connected to the lower end of the first storage body 3, and the other end of the powder delivery pipe 4 is fixedly connected to the upper end of the second storage body 5.

[0027] During specific implementation, the material to be processed is sent into the first storage body 3 through the powder inlet pipe 1, and several levels of screening of the plastic powder raw materials are realized in the first storage body 3; then, the screened plastic powder raw materials are forcibly introduced into the second storage body 5 through the powder delivery pipe 4, and are fully stirred and mixed in the second storage body 5 by the enhanced stirring unit; finally, the stirred and mixed plastic powder material is discharged from the powder outlet pipe 2.

[0028] In this device, the single mixing bin in the prior art is set into a split structure, and different functions are realized through the split structure during the processing. Thus, on the basis of improving the processing quality and efficiency, the flexibility of using this device is further enhanced. When one of the bins fails during operation, it can be repaired separately, thereby reducing the maintenance cost and realizing the function of saving the operation cost to a certain extent.

[0029] Combined with the attached Figure 4 , the screening unit includes a grading screen 6 with a number of filtering holes of different apertures distributed thereon. The grading screen 6 is fixedly connected to the inner wall of bin one 3 through its side; the aperture of the filtering holes gradually becomes smaller on different grading screens 6. One end of the powder feeding pipe 4 is close to the right side direction of bin one 3, and the powder feeding pipe 4 is distributed in a serpentine shape.

[0030] In order to realize the screening function of a specific particle size, during the specific implementation process, the grading screen 6 can be set in a form where the aperture gradually becomes larger or smaller in the distribution from top to bottom, so as to meet different processing and usage requirements. And, in order to further improve the practicality of this device during use, the grading screen 6 can be set in a form of further snap connection, thus achieving the effect of convenient replacement.

[0031] On this basis, the powder feeding pipe 4 is set in a serpentine distribution form, so as to reduce the sudden backflow problem (when the induced draft fan is not working) of the plastic powder raw material during the transportation process, thereby ensuring the unidirectional flow function of the plastic powder raw material from bin one 3 to bin two 5.

[0032] Combined with the attached Figures 2 - 4 , the induced draft fan is distributed on the powder feeding pipe 4 in the direction close to bin two 5. A cover one 9 is hinged to the upper end of bin one 3. The lower end of the powder feeding pipe 4 extends to the left side position of bin one 3 through the cover one 9; the upper end of the grading screen 6 is flush with the upper end of bin one 3.

[0033] As another implementation manner, the grading screen 6 can also be set in a form of distribution from left to right. During the grading and screening process of the plastic powder raw material, screening is carried out in the order from left to right, thereby realizing the function of facilitating the actual operation of the user.

[0034] In this embodiment, the powder feeding pipe 4 is set in a form extending from the direction of the cover one 9 into the interior of bin one 3, so as to utilize the gravity of the plastic powder raw material to achieve the effect of convenient screening and improve the screening efficiency.

[0035] Combined with the attached Figures 1 - 2, the second storage body 5 is arranged to include an upper cylindrical section and a lower hemispherical structure. The enhanced stirring unit includes a stirring shaft 7 and two-way stirring blades 8 connected to the surface of the stirring shaft 7. The stirring blades 8 are all spirally distributed and are in clockwise and counterclockwise directions respectively; the powder outlet pipe 2 extends outward from the lower hemispherical structure part.

[0036] Structurally, the second storage body 5 is set as a lower hemispherical structure, thus achieving the function of facilitating cleaning during the process of not using this device and reducing the cleaning difficulty of the second storage body 5.

[0037] When the plastic powder raw material enters the second storage body 5 for stirring, start the stirring shaft 7 to drive the stirring blades 8 to rotate, thereby stirring the plastic powder raw material. Since the stirring blades 8 are distributed bidirectionally on the stirring shaft 7, during the process of stirring the plastic powder raw material, the stirring efficiency can be improved, the plastic powder raw material can be fully stirred, and the stirring time can be saved.

[0038] Combined with the attached Figures 2 - 3 , the upper end of the second storage body 5 is movably connected with a flip-type upper cover body two 10. The upper end of the stirring shaft 7 extends to the outside of the second storage body 5. The upper end of the stirring shaft 7 is axially connected with an electric drive unit for driving the stirring shaft 7 to rotate; a sealing gasket is provided between the cover body two 10 and the upper end surface of the second storage body 5, and a sound insulation layer is fixedly connected to the lower end surface of the cover body two 10.

[0039] When stirring is required, start the drive motor 11 to drive the stirring shaft 7 to rotate, thereby driving the stirring blades 8 to rotate, and then realizing the stirring and mixing function of the plastic powder raw material.

[0040] On this basis, a sealing gasket is provided between the cover body two 10 and the second storage body 5, thereby reducing the leakage problem of the plastic powder raw material during the stirring process, and then reducing the loss of materials during the processing process.

[0041] The electric drive unit includes a drive motor 11. The sound insulation layer is set as a flexible layer with uniformly distributed sound absorption holes, which is bonded to the cover body two 10; the cover body two 10 and the second storage body 5 are connected through a rotating shaft.

[0042] The setting of the flexible layer can absorb part of the noise generated during the stirring process and reduce the interference caused during the working process. Specifically, the flexible layer can be a structure made of sponge material and is connected to the second storage body 5 by a fixed connection method such as bonding.

[0043] An outer protective tank body is sleeved outside the first storage body 3 and the second storage body 5. The powder inlet pipe 1 and the powder outlet pipe 2 both pass through the side part of the protective tank body.

[0044] The setting of the protective tank body improves the practicability of this device, and then reduces the corrosion and damage of the outside world to the first storage body 3 and the second storage body 5.

[0045] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the creation of the present utility model, design similar structural methods and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present utility model.

Claims

1. A mixing silo for plastic powder processing, comprising a mixing silo body and a powder inlet pipe and a powder outlet pipe arranged thereon, characterized in that: The silo body includes silo body 1 and silo body 2 connected by a powder feeding pipe. A multi-stage screening unit is arranged in silo body 1, and the screened plastic powder raw material enters the powder feeding pipe through the screening unit, and a draft fan is connected in series to the powder feeding pipe; a reinforced stirring unit is arranged in silo body 2, and the stirring unit stirs the plastic powder raw material conveyed by the draft fan; the powder inlet pipe is fixedly connected to the upper end of silo body 1, the powder outlet pipe is fixedly connected to the lower end of silo body 2, one end of the powder feeding pipe is fixedly connected to the lower end of the silo body, and the other end of the powder feeding pipe is fixedly connected to the upper end of silo body 2.

2. A mixing bin for plastic powder processing according to claim 1, characterized in that: The screening unit includes a plurality of grading nets with filter holes of different apertures, and the grading nets are fixedly connected to an inner wall of a bin body through their sides; the apertures of the filter holes gradually decrease on different grading nets, one end of the powder delivery pipe is close to the right side of the bin body, and the powder delivery pipe is distributed in a serpentine shape.

3. A mixing bin for plastic powder processing according to claim 2, characterized in that: The induced draft fan is distributed on the powder delivery pipe near the silo body 2, the upper end of the silo body 1 is hinged with a cover body 1, and the lower end of the powder delivery pipe extends to the left side of the silo body 1 through the cover body 1; the upper end of the grading net is flush with the upper end of the silo body 1.

4. A mixing bin for plastic powder processing according to any one of claims 1 to 3, characterized in that: The silo body 2 is configured to include an upper cylindrical section and a lower hemispherical structure. The reinforced stirring unit includes a stirring shaft and bidirectional stirring blades connected to the surface of the stirring shaft. The stirring blades are all distributed in a spiral shape and are respectively in clockwise and counterclockwise directions; the powder outlet pipe extends outward from the lower hemispherical structure.

5. A mixing bin for plastic powder processing according to claim 4, characterized in that: The upper end of the second bin body is movably connected to the flip-up upper cover body, the upper end of the stirring shaft extends to the outside of the second bin body, and the upper end of the stirring shaft is axially connected to an electric drive unit for driving the stirring shaft to rotate; a sealing gasket is provided between the second cover body and the upper end surface of the second bin body, and a sound insulation layer is fixedly connected to the lower end surface of the second cover body.

6. A mixing bin for plastic powder processing according to claim 5, characterized in that: The electric drive unit includes a drive motor. The sound insulation layer is configured as a flexible layer with evenly distributed sound-absorbing holes, which is bonded to the second cover body. The second cover body and the second bin body are connected via a flip shaft.

7. A mixing bin for plastic powder processing according to any one of claims 1 to 3, characterized in that: A protective tank body is provided outside the first and second silo bodies, and the powder inlet pipe and the powder outlet pipe both pass through the side of the protective tank body.

Images