CN105149070A - Pneumatic transmitting and fine grinding system for producing vanadium-free rare earth based titanium-tungsten powder - Google Patents
Pneumatic transmitting and fine grinding system for producing vanadium-free rare earth based titanium-tungsten powder Download PDFInfo
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- CN105149070A CN105149070A CN201510582576.8A CN201510582576A CN105149070A CN 105149070 A CN105149070 A CN 105149070A CN 201510582576 A CN201510582576 A CN 201510582576A CN 105149070 A CN105149070 A CN 105149070A
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- 238000000227 grinding Methods 0.000 title claims abstract description 54
- 239000000843 powder Substances 0.000 title claims abstract description 50
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 19
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 150000002910 rare earth metals Chemical class 0.000 title abstract 3
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims description 30
- 229910052720 vanadium Inorganic materials 0.000 claims description 16
- -1 vanadium rare earth Chemical class 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 238000009423 ventilation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 241001676635 Lepidorhombus whiffiagonis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a pneumatic transmitting and fine grinding system for producing a vanadium-free rare earth based titanium-tungsten powder. The pneumatic transmitting and fine grinding system comprises a material sucking hose, a first dust catcher, a rough grinder, a first fine grinder, a second dust catcher, a second fine grinder, a powder collecting device and a third dust catcher which are sequentially arranged from the front to the back, wherein the grain accuracy of the rough grinder is 12 micrometers, the grain accuracy of the first fine grinder is 2 micrometers, and the grain accuracy of the second fine grinder is 1 micrometer. According to the pneumatic transmitting and fine grinding system provided by the invention, through the combined use of three-stages of pneumatic transmitting and grinding equipment, risks caused by dust overflow, grinder blocking and the like produced by grinding can be lowered effectively, moreover, and through the grinding of the system, the vanadium-free rare earth based titanium-tungsten powder with the accuracy grade of 1 micrometer can be obtained finally.
Description
Technical field
This invention relates to fine grinding technical field, specifically a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder.
Background technology
In existing fine grinding system, all undertaken by Vertical Mill, traditional way is, imported in hopper by the material of powdery, refine, this mode exists airborne dust and leakage, has harm to environment and the healthy of operating personnel.
Existing milling device can not realize the abrasive dust of fine granular, because if use high-precision refiner, there is the problem of blocking, use corase grind, do not reach the object of abrasive particle.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder, combine for the Geldart-D particle that makes and fine grinding, in the process of carrying out Geldart-D particle, complete fine grinding technology, ensure not leak simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder, it is characterized in that, comprise: the suction flexible pipe set gradually from front to back, the first deduster, corase grind, the first fine grinding, the second deduster, the second fine grinding, powder collecting device and third level deduster, wherein
Suction flexible pipe adopts bellows, and installs the stainless steel material sucking mouth for inserting in saggar additional in the end of suction flexible pipe, and the other end of described suction flexible pipe is connected to the charging aperture of the first deduster by pipeline;
It is 1 μm that described first deduster filters rank, and at the dust-removal cloth-bag that top exit connection negative-pressure air fan and mesh are less than 1 μm, during work, the blanking port lower end of the first deduster connects corase grind,
Corase grind, abrasive particle precision is at 12 microns, and be connected in next first fine grinding by pipeline, abrasive particle precision is at 2 microns, and the discharging opening of the first fine grinding is connected to the charging aperture of the second deduster by pipeline, wherein, filtering rank at the second deduster is 1 μm, install the mesh dust-removal cloth-bag that is less than 1 μm at the negative-pressure air fan of the second deduster mouth of pipe place of giving vent to anger, described second fine grinding abrasive particle precision is at 1 micron, and the discharging opening of described second fine grinding is connected to the charging aperture of powder collecting device by pipeline;
Powder collecting device comprises three, upper, middle and lower casing, is wherein provided with integrated form filter core in upper box, and the filtering accuracy of filter core is at 1 micron, it middle casing is charging aperture, described lower box is powder memory space, and arranges outlet and spiral quantitative feed appliance in the bottom of lower box
The top of described powder collecting device upper box is connected to the 3rd deduster by pipeline.
Further, described first fine grinding adopts mine vertical to pulverize steel mill.
Further, described corase grind is Vertical Mill.
Described powder collecting device comprises:
Housing, housing upper is rectangle, and bottom is rectangular pyramid shape;
Housing upper lumen segmentation is upper plenum and cavity by one horizontally disposed dividing plate, some through holes is offered by described dividing plate and install a filter core in each through hole;
Wherein, the filtering accuracy of described filter core is not more than 5 microns, and arrange air nozzle on the top of each filter core, described air nozzle is connected with high-pressure air source;
The upper plenum housing of housing arranges a negative pressure ventilation pipeline, and external air exhauster; A charging aperture is set in the middle part of described cavity, the discharging opening below lower cavity and install a gate between auger conveyor.
Further, described gate is gate valve.
Further, a cutting plate is set in the discharge outlet of lower cavity.
Further, described cutting plate is the most advanced and sophisticated triangle arranged upward, and is arranged on the middle position of discharging opening.
Further, be independently between each air nozzle, arrange a magnetic valve in the tracheae at each air nozzle place, magnetic valve is blown in a pulsed fashion.
Further, the filtering accuracy of described filter core is the one in 1,2,3,4 micron.
The invention has the beneficial effects as follows:
By the conbined usage of three grades of Geldart-D particle and three grades of milling equipment, effectively reduce flour dust overflow, blocking grinding machine equivalent risk that grinding produces, meanwhile, by the grinding of this system, finally obtain be precision in 1 micron level without vanadium rare earth based titanium tungsten powder.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Fig. 2 is the stereogram of gathering-device.
Fig. 3 is the front view of gathering-device.
Fig. 4 is the sectional view of gathering-device.
In figure: 1 first deduster, 11 upper boxes, casing in 12,13 lower boxes, 14 filtrations, 15 filter cores, 16 negative-pressure air fans, 17 dust-removal cloth-bags, 17 ' dust-removal cloth-bag, 2 second dedusters, 4 suction flexible pipes, 5 corase grind, 6 first fine grindings, 7 second fine grindings, 8 gathering-devices, 81 housings, 811 dividing plates, 812 upper plenums, 813 cavities, 82 filter cores, 83 air nozzles, 831 magnetic valves, 84 negative pressure ventilation pipelines, 85 charging apertures, 86 gates, 87 auger conveyors, 88 cutting plates.
Detailed description of the invention
As shown in Figures 1 to 4, for existing defect, protection main body of the present invention is as follows:
What develop is a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder, multistage negative pressure dust removing device is utilized to carry out relay Geldart-D particle as power source, and in the process of conveying, granular material is brought in first, second and third grade of Vertical Mill and carry out abrasive dust, the granularity control of product is below 2 μm the most at last, realize the object of fine grinding, the granular material overflowed in addition in process of pneumatic transmission is reclaimed fully meanwhile.
Based on above-mentioned description, native system structure comprises: suction flexible pipe 4, first deduster 1, corase grind 5, fine grinding the 6,7, second deduster 2, powder collecting device 8 and third level deduster 3, to be introduced in detail respectively below.
Suction flexible pipe 4 adopts bellows, and installs stainless steel material sucking mouth additional in the end of suction flexible pipe 4, material sucking mouth for inserting in saggar, and draw in saggar 9 without vanadium rare earth based titanium tungsten powder material.The other end of suction flexible pipe 4 is connected to the first deduster 1 by pipeline.
First deduster 1 at this place is transformed and is obtained on the dust catcher foundation of transmission, wherein, three dedusters in the present embodiment are made up of parts such as upper box 11, middle casing 12, lower boxes 13, upper, middle and lower casing is chamber structure, and filtration 14 is set between middle casing and upper box, this filtration comprises a level board and runs through some filter cores 15 of level board, the filtration rank of this filter core is 1 μm, connect a powerful negative-pressure air fan 16 at the top exit of top box 11 body, and micron-sized dust-removal cloth-bag 17 is set.During work, material enters middle casing 12 from air channel, material directly falls into lower box, and falls under gravity in the corase grind of below.
Corase grind 5, abrasive particle precision is at 12 microns, employing Vertical Mill, through the maximum gauge of powdered granule corase grind out at 12 microns, be connected in next first fine grinding 6 by pipeline, first fine grinding adopts mine vertical to pulverize steel mill, abrasive particle precision at 2 microns, through its powder precision out below 2 microns.The discharging opening of the first fine grinding 6 is connected to the second deduster 2 by pipeline, wherein, what use in the second deduster is the filter core of 1 micron, owing to containing the powder that diameter is less than 1 micron in powder, need, at the negative-pressure air fan of the second deduster mouth of pipe place of giving vent to anger, some dust-removal cloth-bags 17 ' are installed, a small amount of powder overflowed is collected.Second fine grinding 7 adopts and refine identical equipment with first, and is arranged on the discharging opening of the second deduster 2 lower end, and abrasive particle precision is at 1 micron, and its powder precision out of process is below 1 micron, and the second discharging opening refining 7 is connected to powder collecting device by pipeline.
Powder collecting device 8, for be the collection of a large amount of material of diameter below 1 micron.Gathering-device comprises upper, middle and lower three casings, is wherein provided with integrated form filter core in upper box, and the filtering accuracy of filter core, at 1 micron, middle casing is charging aperture, that is, by discharging opening UNICOM that pipeline and second refine.
The volume done at lower box is larger, for collecting and temporary transient storage powder, be taper in the bottom of lower box, and a spiral quantitative feed appliance 87 is set, cloth bag rapid fixing is provided with at the port of export of spiral quantitative feed appliance, by spiral quantitative feed appliance, powder is released, and realize pack.
Gathering-device, main body is a housing
Housing parts, housing 81 top is rectangle, bottom is rectangular pyramid shape, a horizontally disposed dividing plate 811 in the rectangular inner cavity on top, internal cavities is divided into upper plenum 812 and cavity 813, some through holes offered by dividing plate 811, and in each through hole, a columned filter core 82 is installed, wherein, the filtering accuracy of this filter core 82 is 1 micron, namely passing through of the powder of more than 1 micron granularity can be stoped, block for preventing filter core, air nozzle 83 is arranged on the top of filter core, wherein independently between air nozzle, a magnetic valve 831 is set in the tracheae at each air nozzle place, for controlling the keying of air nozzle, the whiff pressure of each air nozzle is far away higher than the air pressure of enclosure interior, and in a pulsed fashion filter core is oppositely brushed, namely, contrary with the direction of bleeding.
The upper plenum housing of housing 81 arranges a negative pressure ventilation pipeline 84, and external air exhauster, for exhausting.
A charging aperture 85 is set in the middle part of the cavity of housing 81, material is transported in cavity in the mode of Geldart-D particle, and declines under the effect of gravity and dispersion, and under accumulative being deposited in cavity 814, lower cavity, for collecting powder and temporarily storing, completes preliminary collection.
Discharging opening below lower cavity installs a gate 86 and auger conveyor 87, wherein gate 86 is gate valve, undertaken opening and closedown by the mode of pull, for controlling and blocking the passage between housing cavity and auger conveyor, auger conveyor is driven by motor, and quantitative conveying powder can be realized, for packing.
Instantly the powder in cavity 814 is accumulated to a certain degree, the charging aperture of auger conveyor directly can be pressed in the form of pressure, formed and pile up, one is easy caking, two is cause extra resistance to auger conveyor, so, in the present embodiment, in the discharge outlet of lower cavity 814, a cutting plate 88 is set, this cutting plate is triangle, such as triangle housing, fix in a welding manner, material can form the support of local in cutting plate, that is, the partial pressure of powder directly acts on cutting plate, alleviate the impact on auger conveyor, can solve the above problems.
The top of above-mentioned gathering-device upper box is connected to the 3rd deduster 3 by pipeline, and the effect of this deduster is dedusting, and collects a small amount of dust overflowed.
By above-mentioned enforcement, the multi-stage crushing in Geldart-D particle situation can be realized, and do not have reveal, pulverize rank at micron order, required micron-sized product can be obtained.
Above-mentioned multistage rotary dust collector serves the effect of power in process of pneumatic transmission, powder can be carried backward, meanwhile, in the process of conveying, material is fluid state, but not be stacking states, the powder of dispersion, can with less flow when by fine grinding, larger flow velocity quickly through, and after the grinding of fine grinding, finally the dynamics of powder out can control under 1 micron, achieve the object of grinding of high efficiency, low cost.
Whole system, can not blockage phenomenon easily due to above-mentioned advantage.
Embodiment recited above is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; relevant technical staff in the field, to various distortion of the present invention and improvement, all should expand in protection domain as determined in claims of the present invention.
Claims (9)
1. produce Geldart-D particle, the fine grinding system without vanadium rare earth based titanium tungsten powder for one kind, it is characterized in that, comprise: the suction flexible pipe (4) set gradually from front to back, the first deduster (1), corase grind (5), the first fine grinding (6), the second deduster (2), the second fine grinding (7), powder collecting device (8) and third level deduster (3), wherein
Suction flexible pipe (4) adopts bellows, and installing the stainless steel material sucking mouth for inserting in saggar additional in the end of suction flexible pipe (4), the other end of described suction flexible pipe (4) is connected to the charging aperture of the first deduster (1) by pipeline;
It is 1 μm that described first deduster (1) filters rank, at the dust-removal cloth-bag (17) that top exit connection negative-pressure air fan (16) and mesh are less than 1 μm, during work, the blanking port lower end of the first deduster connects corase grind (5)
Corase grind (5), abrasive particle precision is at 12 microns, and be connected in next first fine grinding (6) by pipeline, abrasive particle precision is at 2 microns, and the discharging opening of the first fine grinding (6) is connected to the charging aperture of the second deduster (2) by pipeline, wherein, filtering rank at the second deduster is 1 μm, at the negative-pressure air fan of the second deduster mouth of pipe place of giving vent to anger, the mesh dust-removal cloth-bag (17 ') that is less than 1 μm is installed, described second fine grinding (7) abrasive particle precision is at 1 micron, the discharging opening of described second fine grinding (7) is connected to the charging aperture of powder collecting device by pipeline,
Powder collecting device (8) comprises three, upper, middle and lower casing, wherein integrated form filter core is installed in upper box, the filtering accuracy of filter core is at 1 micron, it middle casing is charging aperture, described lower box is powder memory space, and discharging opening and spiral quantitative feed appliance (87) are set in the bottom of lower box
The top of described powder collecting device upper box is connected to the 3rd deduster (3) by pipeline.
2. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, is characterized in that, described first fine grinding adopts mine vertical to pulverize steel mill.
3. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, it is characterized in that, described corase grind (5) is Vertical Mill.
4. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, it is characterized in that, described powder collecting device comprises:
Housing, housing (81) top is rectangle, and bottom is rectangular pyramid shape;
Housing upper lumen segmentation is upper plenum (812) and cavity (813) by one horizontally disposed dividing plate (811), some through holes is offered by described dividing plate (811) and in each through hole, installs a filter core (82);
Wherein, the filtering accuracy of described filter core (82) is not more than 5 microns, and arrange air nozzle (83) on the top of each filter core, described air nozzle is connected with high-pressure air source;
The upper plenum housing of housing (81) arranges a negative pressure ventilation pipeline (84), and external air exhauster; A charging aperture (85) is set in the middle part of described cavity, the discharging opening below lower cavity and install a gate (86) between auger conveyor (87).
5. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, it is characterized in that, described gate (86) is gate valve.
6. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, is characterized in that, arrange a cutting plate (88) in the discharge outlet of lower cavity (814).
7. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 6, is characterized in that, described cutting plate is the most advanced and sophisticated triangle arranged upward, and is arranged on the middle position of discharging opening.
8. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, it is characterized in that, be independently between each air nozzle, arrange a magnetic valve (831) in the tracheae at each air nozzle place, magnetic valve is blown in a pulsed fashion.
9. a kind of Geldart-D particle, fine grinding system of producing without vanadium rare earth based titanium tungsten powder according to claim 1, it is characterized in that, the filtering accuracy of described filter core (82) is the one in 1,2,3,4 micron.
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| CN201510582576.8A CN105149070B (en) | 2015-09-15 | 2015-09-15 | A kind of Geldart-D particle for producing no vanadium rare-earth-based titanium tungsten powder, fine grinding system |
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| CN201510582576.8A CN105149070B (en) | 2015-09-15 | 2015-09-15 | A kind of Geldart-D particle for producing no vanadium rare-earth-based titanium tungsten powder, fine grinding system |
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| CN113351308A (en) * | 2021-07-26 | 2021-09-07 | 公安县楚粉郁香食品科技有限公司 | Device and method for processing rice and grain powder by dry constant-temperature steel mill |
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Denomination of invention: A pneumatic conveying and fine grinding system for producing vanadium free rare earth based titanium tungsten powder Effective date of registration: 20220630 Granted publication date: 20180622 Pledgee: Shandong Guangrao Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG DY NEW MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2022980009534 |
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Denomination of invention: A pneumatic conveying and precision grinding system for producing vanadium free rare earth based titanium tungsten powder Effective date of registration: 20231122 Granted publication date: 20180622 Pledgee: Shandong Guangrao Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG DY NEW MATERIAL TECHNOLOGY CO.,LTD. Registration number: Y2023980066863 |
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