CN217250686U - Recyclable powder grading device - Google Patents

Abstract

The utility model discloses a recyclable powder grading device, including the storage silo, the conveying part, the grader, fan and N wait to examine the portion, the storage silo, the conveying part, grader and fan connect gradually and communicate, be provided with N grading wheel in the grader, and the downside of grader has N and the powder outlet that N grading wheel one-to-one set up, N wait to examine the portion and the N powder outlet one-to-one of grader are connected and communicate, wait to examine the portion and include waiting to examine storehouse and sample storehouse, the upper and lower end that waits to examine the storehouse communicates with grader and sample storehouse through the connecting tube respectively, and wait to examine the storehouse and be provided with the valve on the connecting tube of sample storehouse; the utility model discloses a circulated powder grading plant has solved the product sample and has been discontinuous, and efficiency is slow, and the stability of quality and the hierarchical production of product is guaranteed to the problem of long-time contact air, and the accessible screw rod feeding that the particle diameter precision is not conform to the product quality requirement returns and grades again, and is qualified until the product, has guaranteed the continuity of hierarchical production.

Description

Recyclable powder grading device

Technical Field

The utility model relates to a gas atomization powder process technical field, in particular to circulated powder grading plant.

Background

The metal 3D printing powder is often according to different printing needs and application field preparation different particle size section powder after the output of vacuum gas atomization technique, and the air current classification needs be with metal powder classification different products in the aftertreatment process. The main principle is that the materials are loaded into a bin of a classifier, the materials are uniformly conveyed to the classifier through an electromagnetic vibration feeder, the materials are fluidized to a classification area after being dispersed in a cavity under the classifier, powder meeting classification indexes is classified through a classification wheel and a classification wheel of the same specification again, then the powder is sent to a cyclone collector and a pulse dust collector, and the materials are collected through a replacement material tank. The materials which do not meet the grading requirements are directly discharged from the lower grading area under the action of gravity and are collected through the replacement material tank. After the dust collector collects materials, gas enters a Roots blower of an air inducing device.

In the post-processing air flow classification technology for preparing metal powder, traditional feeding dust flies greatly, potential safety hazards exist, manual feeding efficiency is slow, other impurities cannot enter controllably, the reworking times are large under the condition that the classified different particle size indexes do not meet requirements, the collector is repeatedly disassembled after powder discharging, efficiency is relatively reduced, the collector is disassembled for a long time, sealing is unreliable, a production stability system is poor, meanwhile, deviation exists in manual sampling from different collectors, sampling of different particle size sections is not uniform, contact time with air is long, shutdown operation during sampling cannot be achieved, and potential safety hazards exist in product quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome foretell not enough, the utility model provides a circulated powder grading plant is applied to the metal powder and grades, can the circulation sample in the classification process, and is sealed reliable, and the operation is simple and easy, convenient, has solved product sample discontinuity, and efficiency is slow, and the problem of long-time contact air guarantees the quality of product and the stability of hierarchical production, and the particle diameter precision is not conform to the accessible screw rod feeding of product quality requirement and returns and reclassify.

The utility model provides a pair of circulated powder grading plant, include: the storage silo, the conveying part, the grader, the portion is examined to fan and N, the storage silo, the conveying part, grader and fan connect gradually and communicate through connecting tube, be provided with N grading wheel in the grader, and the downside of grader has N and the powder outlet that N grading wheel one-to-one set up, N is examined a portion and is connected and communicate with the N powder outlet one-to-one of grader, examine the portion and examine including examining storehouse and sample storehouse, examine the upper and lower end of examining the storehouse and respectively through connecting tube and grader and sample storehouse intercommunication, and examine and be provided with the valve on the connecting tube of storehouse and sample storehouse, N is positive integer.

Further, the conveying part comprises a first conveying pipe unit and an induced air pipe, the storage bin, the first conveying pipe unit, the induced air pipe and the grader are sequentially connected and communicated through a connecting pipe, the conveying part further comprises a second conveying pipe unit communicated with the lower end of the to-be-detected bin through the connecting pipe, the second conveying pipe unit is connected and communicated with the induced air pipe through the connecting pipe, and valves are respectively arranged on the connecting pipe of the first conveying pipe unit and the induced air pipe, the connecting pipe of the second conveying pipe unit and the connecting pipe of the to-be-detected bin.

Further, the second conveying pipe unit comprises a second conveying pipe, a second screw shaft arranged in the second conveying pipe, and a second rotary driving source of which the output end is coaxially and fixedly connected with the second screw shaft.

Further, the part of examining still includes the transit storehouse, examines storehouse, transit storehouse and second conveyer pipe top-down and loops through connecting tube to connect and communicate in proper order, and examine the connecting tube of storehouse and transit storehouse, be provided with the valve on the connecting tube of transit storehouse and second conveyer pipe respectively.

Further, the first conveying pipe unit comprises a first conveying pipe, a first screw shaft arranged in the first conveying pipe, and a first rotary driving source of which the output end is coaxially and fixedly connected with the first screw shaft.

Further, the base of the first rotary driving source is fixedly connected with the first screw shaft through a first air volume adjusting interface, the first air volume adjusting structure comprises an inner tube and an outer tube which is sleeved outside the inner tube and can rotate relative to the inner tube, one end of the inner tube is connected with the first conveying pipe in a sealing mode, a first air inlet through hole is formed in the outer tube, a second air inlet through hole matched with the first air inlet through hole is formed in the inner tube, the other end of the inner tube is sleeved outside an output shaft of the first rotary driving source and is fixedly connected with the base of the first rotary driving source, or one end of the outer tube is sleeved outside the output shaft of the first rotary driving source and is rotatably connected with the base of the first rotary driving source.

Furthermore, the powder collecting device also comprises a powder collecting tank, the storage bin and the first conveying unit are connected and communicated sequentially through a connecting pipeline, and a valve is arranged on the connecting pipeline between the powder collecting tank and the storage bin.

Further, be connected and communicate through the regulating part between collection powder jar and the storage silo, adjusting part includes first regulation support, the second is adjusted the support, adjusting part and flexible pipeline, first regulation support is fixed in the both sides of storage silo, the both sides at collection powder jar are fixed to the second regulation support, adjusting part includes that one end is fixed at the interior pole on first regulation support, the cover is established at the interior pole other end and can be for the outer tube of this interior pole endwise slip, and with the threaded fastener on the inner rod of this outer tube locking, the outer tube is kept away from the one end of interior pole and is fixed on the second regulation support, flexible pipeline constitutes the connecting tube between collection powder jar and the storage silo.

And further, the air inlet and the air outlet of the dust remover are respectively connected and communicated with the air outlet and the fan on the side part of the classifier through connecting pipelines.

Further, including the portion of examining of N +1, wherein N is examined the portion of examining and is connected and communicate with the N meal outlet one-to-one of grader, and the import that the portion was examined to the other one is examined is connected and is communicated with the lower extreme meal outlet of filter.

The utility model has the advantages that: the utility model discloses powder jar and feed bin butt joint mode are gathered in the powder grading plant, and the device overall positioning is accurate, and the installation is reliable, solves the dust and flies upward risk and the safe risk that impurity got into. The feed bin and miniature sample storehouse are all treated in the below design of each grading wheel, and the sample storehouse is small, can repeatedly dismantle, and the circulation sample is sealed reliable, and the operation is simple and easy, convenient, has solved product sample discontinuity, and efficiency is slow, the long-time problem of contact with the air, guarantees the quality of product and the stability of hierarchical production. The transfer bin is communicated with the screw feeding device, the accessible screw feeding that the particle size precision does not accord with the product quality requirement returns and grades again, until the product is qualified, safety and reliability, high efficiency, it is many to solve artifical rework times, dismantle the problem of collector for a long time, the continuity of stage production has been guaranteed, and the structure is independent, the installation is dismantled simply, the clearance is convenient, can be applied to the comparatively general metal powder of production, such as stainless steel, superalloy, mould steel, nickel base alloy, high melting point metal (niobium, molybdenum, chromium, platinum, etc.).

Drawings

Fig. 1 is a schematic view of a recyclable powder classifying apparatus according to an embodiment of the present invention; and

fig. 2 is an external view of metal powder produced by a recyclable powder classifying apparatus according to an embodiment of the present invention.

In the figure, 1, a powder collecting tank, 2, an adjusting component, 3, a corrugated pipe, 4, a storage bin, 5, a first motor, 6, a moving wheel, 7, a first driving support, 8, a first screw shaft, 9, a first hand valve, 10, a second hand valve, 11, a second screw shaft, 12, a second driving support, 13, a second motor, 14, an air guide pipe, 15, a first adjusting support, 16, a second adjusting support, 17, a classifier, 18, a classifying wheel, 19, a pulse device, 20, a dust remover, 21, a bin to be detected, 22, a sample bin, 23, a transfer bin, 24, a third hand valve, 25 and a fan are arranged.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Fig. 1 is a schematic structural view of a recyclable powder classifying apparatus according to an embodiment of the present invention.

As shown in fig. 1, the recyclable powder classifying device in this embodiment includes a powder collecting tank 1, a storage bin 4, a regulating unit, a conveying unit, a classifier 17, a dust collector 20, a fan 25, and N +1 inspection units. In this embodiment, N is 3.

The powder collecting tank 1, the storage bin 4, the adjusting part, the conveying part, the grader 17, the dust remover 20 and the fan 25 are connected and communicated in sequence through connecting pipelines. And a hand valve is arranged on each connecting pipeline. The powder collection tank 1 is used for containing metal powder.

The storage bin 4 is positioned below the powder collecting tank 1 and used for storing metal powder. The lower part of the storage bin 4 is supported by a bin bracket. The powder collecting tank 1 is connected and communicated with the storage bin 4 through the adjusting part. All there is certain tapering about the storage silo 4, and the inner wall is smooth, prevents that the powder from staying in storage silo 4.

The adjusting assembly 2 comprises a first adjusting bracket 15, a second adjusting bracket 16, the adjusting assembly 2 and a telescopic pipe. The first adjusting bracket 15 is welded on both sides of the storage bin 4. The second adjusting bracket 16 is fixed on two sides of the powder collecting tank 1. The first adjusting bracket 15 or the second adjusting bracket 16 is provided with a weighing module which can weigh and support the powder collecting tank 1. The adjusting component 2 comprises an inner rod, an outer tube and a threaded fastener, wherein one end of the inner rod is fixed on the first adjusting support 15, the outer tube is sleeved at the other end of the inner rod and can axially slide relative to the inner rod, and the threaded fastener is used for locking the outer tube on the inner rod. The end of the outer tube remote from the inner rod is fixed to a second adjusting bracket 16. The threaded fastener is a fastening bolt. The telescopic pipeline forms a connecting pipeline between the powder collecting tank 1 and the storage bin 4. The telescopic pipeline comprises a corrugated pipe 3 and supporting springs connected with the upper end and the lower end of the corrugated pipe 3.

The powder collecting tank 1 is provided with a hanging ring, and the powder collecting tank 1 can be used for 360-degree overturning by matching with an overturning machine. A hand valve is arranged at the opening of the powder collecting tank 1. When the opening of the powder collecting tank 1 is turned downwards, the powder collecting tank is fixed on the second adjusting bracket 16 through a buckle, and is fixed at the upper end of the corrugated pipe 3 through a buckle.

The height of the powder collecting tank 1 is adjusted through the adjusting component 2, the telescopic pipeline is made to stretch, and the general corrugated pipe 3 can contain 20-30kg of powder. The powder reserved in the corrugated pipe 3 can be indirectly conveyed to the storage bin 4 by adjusting a hand valve at the outlet at the lower end of the corrugated pipe 3.

The conveying part comprises a first conveying pipe unit, an induced draft pipe 14 and a second conveying unit.

The storage bin 4, the first conveying pipe unit, the induced draft pipe 14 and the grader 17 are sequentially connected and communicated through connecting pipelines. The second conveying pipe unit is connected and communicated with the induced draft pipe 14 through a connecting pipeline. And a hand valve is arranged on each connecting pipeline.

The first conveying pipe unit comprises a first conveying pipe arranged transversely, a first screw shaft 8 coaxially arranged in the first conveying pipe, a first rotary driving source with an output end coaxially and fixedly connected with the first screw shaft 8, and a first support.

The right end of the first conveying pipe is connected and communicated with the left side of the lower end of the induced draft pipe 14. The lower end outlet of the storage bin 4 is welded on the first conveying pipe through a connecting pipeline.

The first screw shaft 8 is a left screw shaft and is rotatably mounted in the first conveying pipe through a bearing.

The first rotation drive source is a first motor 5. The motor base of the first motor 5 is fixed on the first driving bracket 7 through bolts. The lower end of the first driving bracket 7 is provided with a moving wheel 6. The movable wheel 6 is provided with a brake block which is convenient to move and fix at any time. The first rotary driving source is fixedly connected with the first spiral shaft 8 through the first air volume adjusting interface.

The first air volume adjusting structure comprises an inner tube and an outer tube, wherein the outer tube is sleeved on the outer side of the inner tube and can rotate relative to the inner tube, the right end of the inner tube is connected with the left end of the first conveying tube in a sealing mode, and the left end of the inner tube is sleeved on the outer side of an output shaft of the first rotary driving source and is fixedly connected with a base of the first rotary driving source. Of course, in other embodiments, the left end of the outer tube may be sleeved outside the output shaft of the first rotary driving source and rotatably connected with the base of the first rotary driving source. The outer pipe is provided with a first air inlet through hole, and the inner pipe is provided with a second air inlet through hole matched with the first air inlet through hole. The first air inlet through hole and the second air inlet through hole are matched with each other to form a first air inlet. The air intake of the first air inlet is adjusted by adjusting the contact ratio of the first air inlet through hole and the second air inlet through hole.

The second conveying pipe unit comprises a second conveying pipe arranged transversely, a second screw shaft 11 coaxially arranged in the second conveying pipe, a second driving bracket 12 and a second rotary driving source of which the output end is coaxially and fixedly connected with the second screw shaft 11. The second rotation drive source is a second motor 13. The motor base of the second motor 13 is fixed to the second driving bracket 12 by bolts. The lower end of the second driving bracket 12 is provided with a moving wheel 6. The moving wheel 6 is provided with a brake pad.

The left end of the second conveying pipe is connected and communicated with the right side of the lower end of the induced draft pipe 14.

The second screw shaft 11 is a right screw shaft and is rotatably mounted in the second conveying pipe through a bearing.

The base of the second rotary driving source is fixedly connected with the second screw shaft 11 through a second air volume adjusting interface, and the second air volume adjusting interface has the same structure as the first air volume adjusting interface, and is not described again here.

Three grading wheels 18 are arranged in the grader 17, and three powder outlets which correspond to the three grading wheels 18 one by one are formed in the lower side of the grader 17. The three grading wheels 18 are used for grading 53-180um powder, the 16 grading wheel 182 grades 15-53um powder and the 18 grading wheel 183 grades 0-15um powder from left to right in sequence.

Wherein three portion of examining is examined three powder outlet one-to-one of portion and grader 17 and is connected and communicate, examines the portion of examining including examining storehouse 21, four sample storehouse 22 and a transfer bin 23, and the last lower extreme of examining storehouse 21 is examined and is passed through connecting tube and grader 17 and transfer bin 23 intercommunication respectively, and four sample storehouses 22 are respectively through connecting tube setting examine the downside of storehouse 21 and be located transfer bin 23 all around. The lower end of the transit bin 23 is connected and communicated with the second conveying pipe through a connecting pipeline. And a hand valve is arranged on each connecting pipeline.

The air inlet and the air outlet of the dust remover 20 are respectively connected and communicated with the air outlet at the side part of the classifier 17 and the fan 25 through connecting pipelines. And the tuyere of the dust remover 20 enters from the lower part and goes out from the upper part. The powder outlet on the lower side of the dust remover 20 is connected and communicated with the second conveying pipe through another part to be detected. The dust collector 20 is provided with a pulse device 19 and 10-16 dust collecting bags, and the dust collecting bags and the pulse device 19 are common technical solutions in the market and are not described herein again. The metal powder less than 2um is effectively blocked by the dust removal cloth bag, the pulse device 19 strikes the dust removal cloth bag once every 5-10s, and the powder obtained by pulse enters the part to be detected on the lower side of the dust remover 20.

Fig. 2 is an external view of metal powder produced by a recyclable powder classifying apparatus according to an embodiment of the present invention.

As shown in fig. 2, the metal powder prepared by the recyclable powder classifying device according to the embodiment of the present invention has a better sphericity and a better uniformity.

The operation flow of the powder classifying device of this embodiment is that after powder is loaded into the powder collecting tank 1, the powder collecting tank 1 is upside-down mounted above the storage bin 4, the height of the powder collecting tank 1 relative to the storage bin 4 is adjusted, the telescopic pipeline is mounted, after a sealing ring is mounted, two ends of the telescopic pipeline are fixedly fastened through a buckle, a hand valve above the telescopic pipeline is opened to place metal powder into the telescopic pipeline, a hand valve above the telescopic pipeline is closed, a first air inlet is opened, a hand valve (hereinafter referred to as a hand valve two 10) between the induced air pipe 14 and the second conveying pipe is closed, a hand valve (hereinafter referred to as a hand valve one 9) between the induced air pipe 14 and the first conveying pipe and a hand valve (hereinafter referred to as a hand valve three 24) between the fan 25 and the dust remover 20 are sequentially opened, the fan 25 is started, the three classifying wheels 18, the dust remover 20 and the first motor 5 are started, after the system is stabilized, a hand valve below the telescopic pipeline is opened, the powder is placed into the storage bin 4, after 1min, the sample bins 22 below three bins 21 to be tested (the bins to be tested, the transit bins and the sample bins below the classifier are all referred to as the bins to be tested, the transit bins and the sample bins below the classifier) are respectively disassembled and taken out for powder detection.

If the detection index is qualified, three hand valves between the bin 21 to be detected and the transfer bin 23 are opened, the powder in the bin 21 to be detected enters the transfer bin, the hand valves at the upper end and the lower end of the telescopic pipeline are opened and closed every 10min until the powder in the powder collection tank 1 is completely classified, and the three transfer barrels are taken down to discharge the powder with different particle size sections.

If the detection index is unqualified, closing a hand valve below the telescopic pipeline, closing the first motor 5, closing the first hand valve 9, opening the second hand valve 10, opening the second motor 13 and second air inlets on the second motor 13, completely opening the hand valve between the bin 21 to be detected and the transfer bin 23 and the hand valve between the transfer bin 23 and the second conveying pipe, recycling the powder in the bin 21 to be detected for classification, adjusting the process, and detecting the powder in the sample until the powder is qualified. After the powder in the three transfer bins 23 is emptied, the second motor 13, the second hand valve 10, the hand valves between the transfer bins 23 and the second conveying pipes are closed, the first hand valve 9 and the first motor 5 are opened, the operation processes are repeated until the powder in the powder collecting tank 1 is emptied, the upper hand valve and the lower hand valve of the corrugated pipe 3, the first motor 5, the three grading wheels 18 and the fan 25 of the dust remover 20 are closed in sequence, and the three transfer buckets are taken down for the next process.

To sum up, the utility model discloses a concrete application example is right the utility model discloses the protection scope does not constitute the restriction, adopts the technical scheme of equivalent replacement all to fall within the utility model discloses within the protection scope.

Claims (10)

1. A recyclable powder classifying apparatus, comprising: storage silo, conveying part, grader, fan and N wait to examine portion, the storage silo the conveying part the grader with the fan connects gradually and communicates through connecting tube, be provided with N grading wheel in the grader, just the downside of grader has N and N the meal outlet that grading wheel one-to-one set up, N wait to examine portion with N meal outlet one-to-one of grader is connected and is linked together, wait to examine portion including waiting to examine storehouse and sample storehouse, wait to examine the upper and lower end in storehouse respectively through connecting tube with the grader with sample storehouse intercommunication, just wait to examine the storehouse with be provided with the valve on the connecting tube in sample storehouse, N is the positive integer.

2. The recyclable powder classifying device according to claim 1, wherein the conveying part comprises a first conveying pipe unit and an induced air pipe, the storage bin comprises the first conveying pipe unit, the induced air pipe and the classifier sequentially connected and communicated through a connecting pipe, the conveying part further comprises a second conveying pipe unit communicated with the lower end of the waiting bin through a connecting pipe, the second conveying pipe unit is connected and communicated with the induced air pipe through a connecting pipe, and the first conveying pipe unit is connected with the connecting pipe of the induced air pipe, and the second conveying pipe unit is provided with valves on the connecting pipe of the waiting bin.

3. A recyclable powder classifying apparatus according to claim 2, wherein the second conveying pipe unit includes a second conveying pipe, a second screw shaft provided in the second conveying pipe, and a second rotary drive source having an output end fixedly connected coaxially with the second screw shaft.

4. A recyclable powder classifying device according to claim 3, wherein the inspection part further includes a transit bin, the inspection bin, the transit bin and the second conveying pipe sequentially pass through a connecting pipe from top to bottom to be connected and communicated, and the inspection bin and the connecting pipe of the transit bin, the transit bin and the connecting pipe of the second conveying pipe are respectively provided with a valve.

5. A recyclable powder classifying apparatus according to claim 2, wherein the first conveying pipe unit includes a first conveying pipe, a first screw shaft provided in the first conveying pipe, and a first rotary drive source having an output end fixedly connected coaxially with the first screw shaft.

6. A recyclable powder classifying apparatus according to claim 5, the base of the first rotary driving source is fixedly connected with the first screw shaft through a first air volume adjusting interface, the first air volume adjusting structure comprises an inner tube and an outer tube which is sleeved outside the inner tube and can rotate relative to the inner tube, one end of the inner pipe is hermetically connected with the first conveying pipe, a first air inlet through hole is arranged on the outer pipe, a second air inlet through hole matched with the first air inlet through hole is arranged on the inner pipe, the other end of the inner pipe is sleeved outside the output shaft of the first rotary driving source and is fixedly connected with the base of the first rotary driving source, or one end of the outer pipe is sleeved outside the output shaft of the first rotary driving source and is rotatably connected with the base of the first rotary driving source.

7. The recyclable powder classifying device according to claim 5, further comprising a powder collecting tank, wherein the powder collecting tank, the storage bin and the first conveying unit are sequentially connected and communicated through a connecting pipeline, and a valve is arranged on the connecting pipeline between the powder collecting tank and the storage bin.

8. The recyclable powder classifying device according to claim 7, wherein the powder collecting tank is connected and communicated with the storage bin through an adjusting part, the adjusting assembly comprises a first adjusting support, a second adjusting support, an adjusting assembly and a telescopic pipeline, the first adjusting support is fixed on two sides of the storage bin, the second adjusting support is fixed on two sides of the powder collecting tank, the adjusting assembly comprises an inner rod, an outer tube and a threaded fastener, one end of the inner rod is fixed on the first adjusting support, the outer tube is sleeved on the other end of the inner rod and can axially slide relative to the inner rod, the outer tube is locked on the inner rod, one end, far away from the inner rod, of the outer tube is fixed on the second adjusting support, and the telescopic pipeline forms a connecting pipeline between the powder collecting tank and the storage bin.

9. A recyclable powder classifying device according to claim 1, further comprising a dust catcher, wherein the air inlet and the air outlet of the dust catcher are connected and communicated with the air outlet at the side of the classifier and the fan through connecting pipes, respectively.

10. A recyclable powder classifying device according to claim 9, comprising N +1 said parts to be inspected, wherein N said parts to be inspected are connected and communicated with N powder outlets of the classifier in a one-to-one correspondence, and the other inlet of said part to be inspected is connected and communicated with a powder outlet at the lower end of the filter.

Images