A kind of solid material is in small, broken bits and high-pressure molding system and technique
Technical field
The present invention relates to a kind of material crush and molding equipment, especially a kind of for the in small, broken bits of bulk materials with become
Type system and technique.
Background technology
At present, there is substantial amounts of efflorescence or solid small particles material, such as low order in industries such as chemical industry, building materials, electric power
Coal, moisture-free coal, semicoke, lime-ash, spoil etc., this kind of material typically requires and carries out forming processes, in order to be processed further
Using and long-distance sand transport.Current forming technique has been broadly divided into binding agent molding and two kinds of binder free molding.Wherein have
Binding agent molding adhesive alternative condition is harsh, consumption is big, and molding is relatively costly, mainly should in the higher field of added value of product
With.Binder free molding requires strict to the granularity of material, temperature, moisture and briquetting pressure.Most of moulder inlet at present
Raw meal particle size is more than 3mm, and forming temperature is close to room temperature, and the highest line pressure of forming machine is only 150kn/cm, and molding is produced
Product cold pressing strength, immersion intensity, calorific intensity, heat stability are all unable to reach requirement it is impossible to meet subsequent technique needs.
Content of the invention
The present invention provides a kind of material in small, broken bits and formation system and technique, big to solve raw meal particle size in prior art, becomes
Type machine pressure is low, and forming temperature can not adjust the problem of led to molding effect difference.
A kind of solid material is in small, broken bits and high-pressure molding system, includes the inlet valve of reception bulk material, connects with inlet valve
Fine crusher, described fine crusher has the adjustable screen drum of gap, and fine crusher bottom is connected with fine powder surge bunker, fine powder surge bunker bottom
It is provided with the first discharge valve, below described first discharge valve, be communicated with forming machine feeding serew, described forming machine feeding serew
Discharging opening is connected with the charging aperture of forming machine precompressed tight-spiral, and the discharging opening of forming machine precompressed tight-spiral is connected to high pressure roller
Type machine, the vibrating screen classifier being provided with forming machine outfeed belt and being attached thereto below described high-voltage double-roller forming machine outlet, shakes
Dynamic screening machine one outlet is connected with the transhipment belt exporting shaped article, and another outlet is provided with the 3rd discharge valve, not
Molding materials send inlet valve back to through the 3rd discharge valve and embedded scraper transporter.
Further, described fine powder surge bunker top is connected with pressure balance pipeline, according to handled material propertiess, leads to
Overregulate pressure balance pipeline valve opening and dedusting air-introduced machine inlet valve aperture, thus adjusting fine powder surge bunker to run pressure
Power.If processing inflammable and explosive material, fine powder surge bunker is made to keep pressurized operation using nitrogen, if processing common material,
Surge bunker is made to keep tiny structure to run to save tolerance.Additionally, surge bunker top is provided with the first cleaner unit, described first dedusting
Device is connected respectively to dedusting air-introduced machine and the first nitrogen blowback pipeline.
Described fine powder surge bunker bottom is provided with along the diagonally disposed heating fluidisation pipeline of fine powder surge bunker quadrangle tangential circle.
Further, it is provided with the second cleaner unit between described forming machine precompressed tight-spiral and vacuum air pump, described
Two cleaner unit tops are connected with the second nitrogen blowback pipeline, and lower part outlet is provided with the second discharge valve, described second discharge valve
Outlet is connected with embedded scraper transporter.
Especially, described inlet valve, the first discharge valve, the second discharge valve are star-shaped discharge valve.
Especially, described forming machine feeding serew and forming machine precompressed tight-spiral are variable-pitch auger, so that powdery
Material forms consolidation material envelope in spiral outlet space, and described forming machine precompressed tight-spiral is connected with vacuum air pump.
Further, described high-voltage double-roller forming machine discharging opening is connected with nitrogen fire main.
Further, described high-voltage double-roller forming machine is actuated by hydraulic oil pump so that its line pressure reaches 300kn/cm-
500kn/cm.
Further, described solid material is in small, broken bits and high pressure forming device also includes nitrogen heater.
Carry out the solid material technique with high-pressure molding in small, broken bits using solid material is in small, broken bits with high pressure forming device, including such as
Lower step:
1) solid material is thrown in into inlet valve, material obtains 0-3mm after the crusher machine in small, broken bits being connected with inlet valve
Particle diameter fine powder;
2) fine powder enters forming machine feeding serew after fine powder surge bunker and gas discharged by forming machine precompressed tight-spiral;
3) discharge the fine powder after gas and be admitted to high-voltage double-roller forming machine, the material after high-pressure molding is through outfeed belt
It is transported to vibrating screen classifier screening;
4) shaped article passes through to transport Belt Conveying to stock ground, and unformed material returns to charging by embedded scraper transporter
Valve, the fine powder that the second cleaner unit screens out in addition falls into embedded scraper transporter returning charge through the second discharge valve.
The invention has the beneficial effects as follows: material is screened by this system, in small, broken bits and molding procedure is integrated with reference to [u1], adjusts
Material particular diameter, temperature, discharge gas between powder, reach optimal condition of molding, are destroyed within material particles by high-pressure molding
Pore structure, realizes binder free molding by material from viscosity produced after being extruded.This technological forming product has
Intensity is high, the features such as be difficult to relapse, air blasting do not occur, expand bulk materials processing and utilization scope, increase long-distance transport effect
Rate is simultaneously greatly improved the safety and stability performance of material.
Brief description
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 be the present invention solid material is in small, broken bits and high pressure forming device attachment structure schematic diagram;
Fig. 2 is the fine powder surge bunker schematic cross-section of the present invention.
Reference: 1- inlet valve, 2- fine crusher, 3- fine powder surge bunker, 4- first cleaner unit, 5- dedusting air inducing
Machine, 6- first discharge valve, 7- feeding serew, 8- forming machine precompressed tight-spiral, 9- high-voltage double-roller forming machine, 10- second cleaner unit,
11- second discharge valve, 12- vacuum air pump, 13- hydraulic oil container, 14- hydraulic oil pump, 15- forming machine outfeed belt, 16- vibration
Screening machine, 17- transhipment belt, 18- the 3rd discharge valve, 19- embedded scraper transporter, 20- nitrogen heater, 21- first nitrogen are anti-
Blowpipe road, 22- pressure balance pipeline, 23- heating fluidisation pipeline, 24- the second nitrogen blowback pipeline, 25- nitrogen fire main.
Specific embodiment
With reference to Fig. 1, a kind of solid material is in small, broken bits and high-pressure molding system, includes the inlet valve 1 of reception bulk material, and enters
The fine crusher 2 of material valve connection, fine crusher bottom is connected with fine powder surge bunker 3, and fine powder surge bunker bottom is provided with the first discharge valve
6, it is communicated with forming machine feeding serew 7, the discharging opening of described forming machine feeding serew and forming machine below described first discharge valve
The charging aperture connection of precompressed tight-spiral 8, the discharging opening of forming machine precompressed tight-spiral is connected to high-voltage double-roller forming machine 9, described height
It is provided with forming machine outfeed belt 15 and the vibrating screen classifier 16 being attached thereto, vibrating screen classifier below pressure roller briquetting machine outlet
One outlet is connected with the transhipment belt 17 exporting shaped article, and another outlet is provided with the 3rd discharge valve 18, unformed
Material sends inlet valve 1 back to through the 3rd discharge valve and embedded scraper transporter 19.
Especially, described fine crusher 2 is " sieving broken one " equipment, can change 1-3mm metallic screen respectively according to material propertiess
It is ensured that entrance particle diameter is not more than 50mm, the bulk materials that water content is not more than 10% disposably pass through fine crusher to cylinder.In order to
Ensure high-pressure molding quality it is desirable to material particular diameter is not more than 3mm before molding.And fine crusher screen drum gap is adjustable, by between adjustment
Gap, so that the fine powder of 0-3mm particle diameter can enter fine powder surge bunker 3 by fine crusher, continues to stay carefully more than the material of 3mm particle diameter
In small, broken bits again in broken machine.So can ensure that the material particular diameter from fine crusher outlet all meets the technological requirement of 0-3mm.
Described fine powder surge bunker 3 top is connected with pressure balance pipeline 22, according to handled material propertiess, by adjusting
Pressure balance pipeline 22 valve opening and dedusting air-introduced machine 5 inlet valve aperture, thus adjust the operation pressure of fine powder surge bunker 3
Power.If processing inflammable and explosive material, fine powder surge bunker 3 is made to keep pressurized operation using nitrogen, if processing common material,
Fine powder surge bunker 3 is made to keep tiny structure to run to save tolerance.Surge bunker top is provided with the first cleaner unit 4, the first cleaner unit
Can be sack cleaner or metal filter cylinders cleaner unit.Described first cleaner unit is connected respectively to dedusting air-introduced machine 5 and the first nitrogen
Gas blowback pipeline 21.Waste gas is entered outside atmosphere by described dedusting air-introduced machine, and the first nitrogen blowback pipeline is used for adsorbing the
Powder on one cleaner unit blows off, and prevents from blocking.
With reference to Fig. 1 and Fig. 2, described fine powder surge bunker 3 bottom is provided with diagonally disposed along fine powder surge bunker quadrangle tangential circle
Heating fluidisation pipeline 23, for adjusting before molding temperature of charge and being played to fine powder surge bunker bottom by the injection of gases at high pressure
Anti-blocking and dredging effect.
With continued reference to Fig. 1, between described forming machine precompressed tight-spiral and vacuum air pump 12, it is provided with the second cleaner unit 10,
Described second cleaner unit top is connected with the second nitrogen blowback pipeline 24, for the powder of the second cleaner unit absorption blows off, prevents
Only block.Second cleaner unit lower part outlet is provided with the second discharge valve 11, and the outlet of described second discharge valve conveys with burying scraper plate
Machine 19 is connected.
Preferably, described inlet valve 1, the first discharge valve 6, the second discharge valve 11 are star-shaped discharge valve.
Described forming machine feeding serew 7 and forming machine precompressed tight-spiral 8 are variable-pitch auger, so that granular material exists
Spiral outlet space forms consolidation material envelope, and described forming machine precompressed tight-spiral is connected with vacuum air pump 12.So becoming
Type machine precompressed tight-spiral 8 forms bottom material envelope, feeding serew 7 forms and sets up under outlet material envelope and vacuum air pump 12 collective effect
Air in powder in forming machine precompressed tight-spiral 8 is fully discharged, after preventing high-pressure molding by a maximum of about of 100kpa vacuum environment
There is air blasting phenomenon in shaped article.
Described high-voltage double-roller forming machine 9 discharging opening is connected with nitrogen fire main 25.It is applied to process moisture-free coal, semicoke
Etc. flammable materials when, forming machine export fire-fighting.
Described first nitrogen blowback pipeline 21, pressure balance pipeline 22, heating fluidisation pipeline 23, the second nitrogen blowback pipeline
24 sources of the gas being used can change according to the difference processing product.Can be nitrogen, alternatively compressed air.Wherein first nitrogen
Blowback pipeline and the second nitrogen blowback pipeline minimum pressure are 0.3mpa.In order to meet technological temperature environmental requirement, may also include
Nitrogen heater 20 with adjust temperature for example will be in small, broken bits after material be heated to forming requirements temperature, to ensure shaping strength.
Described high-voltage double-roller forming machine 9 is actuated by hydraulic oil pump 14, and its line pressure need to reach 300kn/cm-500kn/cm.
It is compressed to shaped article under this kind of pressure, formed product rate is up to 80%.
Carry out the solid material technique with high-pressure molding in small, broken bits using solid material is in small, broken bits with high pressure forming device, including such as
Lower step:
1) solid material is thrown in into inlet valve 1, material obtains 0- after the fine crusher 2 being connected with inlet valve is crushed
3mm particle diameter fine powder;
2) fine powder enters forming machine feeding serew 7 after fine powder surge bunker 3, subsequently exports from feeding serew and enters molding
Machine precompressed tight-spiral 8, forms a maximum of about of under feeding serew, forming machine precompressed tight-spiral and empty air pump 12 collective effect
Air in powder in forming machine precompressed tight-spiral 8 is fully discharged by 100kpa vacuum environment;
3) discharge the fine powder after gas to be admitted to high-voltage double-roller forming machine 9 and carry out high-pressure molding, the material warp after molding
Cross outfeed belt 15 and be transported to vibrating screen classifier 16 and screen, screen out shaped article and unformed powdery, lump material.
4) shaped article is transported to stock ground by transporting belt 17, and unformed material passes through the 3rd discharge valve 18 and buries scraper plate
Conveyer 19 returns to inlet valve and again processes, and the fine powder that the second cleaner unit screens out in addition falls into through the second discharge valve and buries scraper plate
Conveyer 19 returning charge.
Especially, the suitability of this technique is wider, takes into full account the factor of impact molding effect: material particular diameter, temperature, moisture
And briquetting pressure etc., test several times can be passed through according to handled bulk materials property and determine optimal molding effect bar
Part, i.e. achievable industrialized production slightly modified to the system.It is below several variant embodiment of the present invention.
When the system is applied to moisture-free coal, semicoke moulding process, supplied materials temperature has met forming requirements, therefore nitrogen heating
Device 20 need not continuously open, and only do temperature adjustment and be used.For ensureing security performance, auxiliary source of the gas can adopt nitrogen, so that fine powder is delayed
Rush storehouse 3 and keep nitrogen environment operation under positive pressure, the first cleaner unit 4, the second cleaner unit 10 can use the metal filter cylinders cleaner unit of fire resisting,
Additionally, 25 nitrogen fire mains can be set up in forming machine outlet.
When the system is applied to the nonflammable moulding process such as lime-ash, pipeline 23 flow can be fluidized by adjusting heating,
Raw material is made to meet forming temperature.For reducing operating cost, auxiliary source of the gas adopts compressed air, makes fine powder surge bunker 3 keep negative pressure
Run, the first cleaner unit 4, the second cleaner unit 10 can be using cheap sack cleaners.Additionally, forming machine outlet nitrogen disappears
Anti- pipeline 25 also can be cancelled.
The system can change technological parameter according to material propertiess, and the screen drum gap for example passing through to adjust fine crusher 2 can adjust
Particle diameter before molding, adjusts heating-up temperature by nitrogen heater 20, adjusts molding pressure by hydraulic oil container 13 and hydraulic oil pump 14
Power etc., thus processed from Optimal technique process.
Above content is in small, broken bits to solid material of the present invention and high-pressure molding system and technique have been described in detail,
And it is described with reference to the drawings, but the invention is not restricted to specific embodiments described above, all skills according to the present invention
Any improvement, equivalent modifications and replacement that art main points are carried out etc., all within the scope of the appended claims.