CN218982346U - Low-cost high-efficient closed circulation grading plant - Google Patents
Low-cost high-efficient closed circulation grading plant Download PDFInfo
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- CN218982346U CN218982346U CN202223375757.8U CN202223375757U CN218982346U CN 218982346 U CN218982346 U CN 218982346U CN 202223375757 U CN202223375757 U CN 202223375757U CN 218982346 U CN218982346 U CN 218982346U
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Abstract
The utility model discloses a low-cost and high-efficiency closed circulation grading device which comprises a screw feeding mechanism, a primary separator, a secondary separator, a dust remover and a fan, wherein the discharging end of the screw feeding mechanism is connected with the feeding port of the primary separator, the fine material discharging port of the primary separator is connected with the feeding port of the secondary separator through a primary pipe, the fine material discharging port of the secondary separator is connected with the feeding port of the dust remover through a diode, the gas outlet of the dust remover is connected with one end of the fan through a front pipe of the fan, and the other end of the fan is connected with the rear pipe of the fan. The utility model adopts the sealing structure, reduces the risk of powder entering impurities, ensures the stability of product quality, has high powder grading precision, and reduces the use amount of inert gas.
Description
Technical Field
The utility model relates to a circulation grading device, in particular to a low-cost efficient closed circulation grading device, and belongs to the technical field of additive manufacturing.
Background
The metal 3D printing powder often needs aftertreatment technology to prepare different particle size section powder after the output of vacuum gas atomization technology, be applied to the field in different printing markets, grading plant mainly plays the separation with different particle size sections in the aftertreatment process, through the technological adjustment, the printing demand in different fields needs to be satisfied to the precision of grading, the main principle is that the powder gets into first grade transition storehouse, second grade transition storehouse, tertiary transition storehouse etc. through the conveying of screw rod, separates the powder into the feed bin through the classification wheel and the suction of classification that each bin was taken to through the displacement bucket with the material collection. The domestic open air current grading plant, efficiency is slower, and the operation is more loaded down with trivial details, through manual feeding, and the dust flies upward seriously 1 powder consumption coefficient is big, and it is different particle diameter products to grade simultaneously, and it is poor to the account for the grading precision of different particle diameter sections, and a large amount of powder need grade once more, and the reworking treatment time rises by a wide margin, and the grading is with high costs, and the classifying link contacts air for a long time, has the risk of product quality, has the impurity to get into the risk that influences product quality simultaneously.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a low-cost high-efficiency closed circulation classification device, which is closed to separate oxygen and has high classification precision.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a low-cost high-efficient closed circulation grading plant which characterized in that: the device comprises a screw feeding mechanism, a primary separator, a secondary separator, a dust remover and a fan, wherein the discharge end of the screw feeding mechanism is connected with the feed inlet of the primary separator, the fine material discharge port of the primary separator is connected with the feed inlet of the secondary separator through a primary pipe, the fine material discharge port of the secondary separator is connected with the feed inlet of the dust remover through a diode, the gas outlet of the dust remover is connected with one end of the fan through a front pipe of the fan, and the other end of the fan is connected with the rear pipe of the fan.
Further, screw rod feed mechanism contains feed pipeline, feed screw rod, worm gear, driving motor, feed bin and feedwell, and feed pipeline's one end is connected with the feed inlet of one-level separator, and feed screw rod rotates to set up on feed pipeline's axle center and feed screw rod's one end is connected by driving motor through worm gear and driving motor and drives, and feed pipeline's upside is opened has the feed inlet, and the feed bin lower extreme is fixed in feed pipeline upside feed inlet, and the feedwell can be dismantled and set up in the feed bin upper end.
Further, the first-stage separator adopts a grading wheel type separator, a coarse material discharging outlet at the lower end of the first-stage separator is connected with the upper end of a first-stage transition bin, and the lower end of the first-stage transition bin is detachably connected with a first-stage bin.
Further, a coarse material discharge port at the lower end of the secondary separator is connected with the upper end of the secondary transition bin, and the lower end of the secondary transition bin is detachably connected with the two-pole bin.
Further, ash and slag discharge holes at the lower end of the dust remover are connected with the upper end of a three-stage transition bin, and the lower end of the three-stage transition bin is detachably connected with the three-stage bin.
Further, a front pressure gauge and a front air inlet of the fan are arranged on the front pipe of the fan, and a rear air outlet of the fan is arranged on the rear pipe of the fan.
Further, one end of the rear fan pipe is connected with the fan, and a filter and a fan regulating valve are arranged at the other end of the rear fan pipe.
Further, the fan rear pipe is connected with the primary transition bin through a primary air return pipe, and a primary regulating valve and a primary air inlet are arranged on the primary air return pipe.
Further, the fan rear pipe is connected with the secondary transition bin through a secondary air return pipe, and a secondary regulating valve and a secondary air inlet are arranged on the secondary air return pipe.
Compared with the prior art, the utility model has the following advantages and effects:
1. according to the utility model, the structure with the sealed fixed feeding barrel and the bin is adopted, powder is conveyed into the classified bin body in an internal screw feeding mode, so that the risk of entering impurities by the powder is reduced, and the stability of product quality is ensured;
2. according to the utility model, the primary and secondary air return pipes are added in the areas of the primary separator and the secondary separator, and the gas is recycled in time through the control of the regulating valve and the system pressure, so that the cost of using inert gas in a grading manner is reduced;
3. the utility model realizes the control of air supplementing and air exhausting through the pressure detection of the system, ensures that the system is in a stable state, and realizes the stability and continuity of the grading device for grading the powder;
4. the utility model has independent structure, simple installation and disassembly and convenient cleaning.
Drawings
FIG. 1 is a schematic illustration of a low cost, high efficiency closed cycle fractionation device of the present utility model.
Fig. 2 is a cross-sectional view of the screw feed mechanism of the present utility model.
FIG. 3 is another schematic view of a low cost, high efficiency closed cycle fractionation device according to the present utility model.
Fig. 4 is a top view of a low cost, high efficiency closed cycle fractionation device of the present utility model.
Detailed Description
In order to explain in detail the technical solutions adopted by the present utility model to achieve the predetermined technical purposes, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and that technical means or technical features in the embodiments of the present utility model may be replaced without inventive effort, and the present utility model will be described in detail below with reference to the accompanying drawings in combination with the embodiments.
As shown in fig. 1, the low-cost and high-efficiency closed circulation classification device comprises a screw feeding mechanism 1, a primary separator 2, a secondary separator 3, a dust remover 4 and a fan 5, wherein the discharge end of the screw feeding mechanism 1 is connected with the feed inlet of the primary separator 2, the fine material discharge port of the primary separator 2 is connected with the feed inlet of the secondary separator 3 through a primary pipe 6, the fine material discharge port of the secondary separator 3 is connected with the feed inlet of the dust remover 4 through a diode 7, the gas outlet of the dust remover 4 is connected with one end of the fan 5 through a fan front pipe 8, and the other end of the fan 8 is connected with a fan rear pipe 9. The primary separator 2, the secondary separator 3 and the dust remover 4 are sequentially fixed on a frame 16. The gas inlets in this embodiment are all filled with inert gas or nitrogen.
As shown in fig. 2, the screw feeding mechanism 1 comprises a feeding pipeline 10, a feeding screw 11, a worm gear 12, a driving motor 13, a storage bin 14 and a feeding barrel 15, wherein the feeding pipeline 10 is fixed on a frame 16 along the horizontal direction, one end of the feeding pipeline 10 is connected with a feeding inlet of the primary separator 2, the feeding screw 11 is rotatably arranged on the axis of the feeding pipeline 10, one end of the feeding screw 11 is connected with the driving motor 13 through the worm gear 12 and driven by the driving motor 13, the upper side of the feeding pipeline 10 is provided with a feeding inlet, the lower end of the storage bin 14 is fixed in the feeding inlet on the upper side of the feeding pipeline 10, and the feeding barrel 15 is detachably arranged on the upper end of the storage bin 14. An inlet air regulating valve 34 is also provided on the feed line 10.
As shown in fig. 3, the primary separator 2 adopts a grading wheel type separator, a coarse material discharging outlet at the lower end of the primary separator 2 is connected with the upper end of a primary transition bin 17, and the lower end of the primary transition bin 17 is detachably connected with a primary bin 18. The coarse material discharge port at the lower end of the secondary separator 3 is connected with the upper end of the secondary transition bin 19, and the lower end of the secondary transition bin 19 is detachably connected with the two-pole bin 20. The ash and slag discharging hole at the lower end of the dust remover 4 is connected with the upper end of the three-stage transition bin 21, and the lower end of the three-stage transition bin 21 is detachably connected with the three-stage bin 22. In this embodiment, the detachable connection may be a bolt connection, a buckle connection, or a hoop connection.
The front fan pipe 8 is provided with a front fan pressure gauge 23 and a front fan air inlet 24, and the rear fan pipe 9 is provided with a rear fan air outlet 25. One end of the fan rear pipe 9 is connected with the fan 5, and the other end of the fan rear pipe 9 is provided with a filter 26 and a fan regulating valve 27.
As shown in fig. 4, the fan rear pipe 9 is connected with the primary transition bin 17 through a primary air return pipe 28, and a primary regulating valve 29 and a primary air inlet 30 are arranged on the primary air return pipe 28. The fan rear pipe 9 is connected with the secondary transition bin 19 through a secondary air return pipe 31, and a secondary regulating valve 32 and a secondary air inlet 33 are arranged on the secondary air return pipe 31.
When the low-cost high-efficiency closed circulation grading device works, the first-stage bin 18, the second-stage bin 20 and the third-stage bin 22 are respectively arranged on the first-stage transition bin 17, the second-stage transition bin 19 and the third-stage transition bin 21, hand valves of the three bins are all in an open state, powder is put into the feeding barrel 15, the feeding barrel 15 is arranged in the bin 14 through a fastener, the fan regulating valve 27 is opened, the dust remover 4 is opened, the fan 5 is opened, the first-stage separator 2 is opened, the driving motor 13 is opened, the air inlet regulating valve 34 is opened, after 1min, the pressure of the front pressure gauge 23 of the fan is observed to reach 101-103kpa, the first-stage regulating valve 29 and the second-stage regulating valve 32 are opened, the air inlet regulating valve 34 is closed, the angle of the fan regulating valve 27 is properly closed, the discharge amount is reduced, and when the pressure of the front pressure gauge 23 of the fan reaches 95-98kpa through regulating the first-stage regulating valve 29 and the second-stage regulating valve 32, the hand valve powder on the bin 14 is opened to start classification, when the pressure of the front pressure gauge 23 of the blower is more than 98kpa, the rear air outlet 25 of the blower automatically exhausts to reach the interval of 95-98kpa, the rear air outlet 25 of the blower stops exhausting, when the pressure of the front pressure gauge 23 of the blower is less than 98kpa, the primary air inlet 30 and the secondary air inlet 33 automatically supplement air to reach the interval of 95-98kpa, the primary air inlet 30 and the secondary air inlet 33 stop supplementing air, the system test is in a stable state until the powder in the feed bin 15 is completely classified, the driving motor 13, the primary separator 2, the dust remover 4, the blower 5 and the blower regulating valve 27 are sequentially closed, the primary bin 18, the secondary bin 20 and the tertiary bin 22 are respectively disassembled to remove powder, and then the bin is installed, the feedwell 15 is detached from the silo 14. Repeating the above operations may perform a repeat cycle classification.
The classifying device is designed with the matched structure of the feeding barrel and the bin, so that the powder is fed in a closed environment, the contact with the outside air is avoided, impurities are prevented from entering the powder, the quality of products is ensured, meanwhile, the circulated gas is protected by inert gas argon or nitrogen, the problem that the powder is contacted with the air for a long time is solved, and the risk of increasing the oxygen content of the powder in the classifying process is reduced. The primary and secondary air return pipes are added in the primary and secondary areas, the gas is recycled in time through the control of the regulating valve and the system pressure, the cost of using inert gas in a grading manner is reduced, the control of air supplementing and air exhausting is realized through the pressure detection of the system, the system is ensured to be in a stable state, and the stability and the continuity of the grading device for powder grading are realized. The first-stage classification wheel is provided with a special fixing support device, so that quick disassembly and assembly can be realized, positioning is accurate, and efficiency is improved.
The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other embodiments, such as those described above, of making various modifications and equivalents will fall within the spirit and scope of the present utility model.
Claims (9)
1. The utility model provides a low-cost high-efficient closed circulation grading plant which characterized in that: the device comprises a screw feeding mechanism, a primary separator, a secondary separator, a dust remover and a fan, wherein the discharge end of the screw feeding mechanism is connected with the feed inlet of the primary separator, the fine material discharge port of the primary separator is connected with the feed inlet of the secondary separator through a primary pipe, the fine material discharge port of the secondary separator is connected with the feed inlet of the dust remover through a diode, the gas outlet of the dust remover is connected with one end of the fan through a front pipe of the fan, and the other end of the fan is connected with the rear pipe of the fan.
2. A low cost, efficient closed cycle classification apparatus as defined in claim 1, wherein: the screw feeding mechanism comprises a feeding pipeline, a feeding screw, a worm gear, a driving motor, a feed bin and a feed bin, wherein one end of the feeding pipeline is connected with a feeding inlet of the primary separator, the feeding screw is rotationally arranged on the axis of the feeding pipeline, one end of the feeding screw is connected with the driving motor through the worm gear and is driven by the driving motor, the upper side of the feeding pipeline is provided with the feeding inlet, the lower end of the feed bin is fixed in the feeding inlet on the upper side of the feeding pipeline, and the feed bin is detachably arranged at the upper end of the feed bin.
3. A low cost, efficient closed cycle classification apparatus as defined in claim 1, wherein: the first-stage separator adopts a grading wheel type separator, a coarse material discharging outlet at the lower end of the first-stage separator is connected with the upper end of a first-stage transition bin, and the lower end of the first-stage transition bin is detachably connected with a first-stage bin.
4. A low cost, efficient closed cycle classification apparatus as defined in claim 3, wherein: the coarse material discharge port at the lower end of the secondary separator is connected with the upper end of the secondary transition bin, and the lower end of the secondary transition bin is detachably connected with the two-pole bin.
5. A low cost, efficient closed cycle classification apparatus as defined in claim 3, wherein: the ash discharging hole at the lower end of the dust remover is connected with the upper end of the three-stage transition bin, and the lower end of the three-stage transition bin is detachably connected with the three-stage bin.
6. The low cost, efficient closed cycle classification apparatus as defined in claim 4, wherein: the front pipe of the fan is provided with a front pressure gauge and a front air inlet of the fan, and the rear pipe of the fan is provided with a rear air outlet of the fan.
7. The low cost, efficient closed cycle classification apparatus according to claim 6, wherein: one end of the rear fan pipe is connected with the fan, and the other end of the rear fan pipe is provided with a filter and a fan regulating valve.
8. The low cost, efficient closed cycle classification apparatus according to claim 6, wherein: the fan rear pipe is connected with the primary transition bin through a primary air return pipe, and a primary regulating valve and a primary air inlet are arranged on the primary air return pipe.
9. The low cost, efficient closed cycle classification apparatus according to claim 6, wherein: the fan rear pipe is connected with the secondary transition bin through a secondary air return pipe, and a secondary regulating valve and a secondary air inlet are arranged on the secondary air return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223375757.8U CN218982346U (en) | 2022-12-16 | 2022-12-16 | Low-cost high-efficient closed circulation grading plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223375757.8U CN218982346U (en) | 2022-12-16 | 2022-12-16 | Low-cost high-efficient closed circulation grading plant |
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| Publication Number | Publication Date |
|---|---|
| CN218982346U true CN218982346U (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223375757.8U Active CN218982346U (en) | 2022-12-16 | 2022-12-16 | Low-cost high-efficient closed circulation grading plant |
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| CN (1) | CN218982346U (en) |
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- 2022-12-16 CN CN202223375757.8U patent/CN218982346U/en active Active
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