CN106969621A - A kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder - Google Patents

A kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder Download PDF

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Publication number
CN106969621A
CN106969621A CN201710288406.8A CN201710288406A CN106969621A CN 106969621 A CN106969621 A CN 106969621A CN 201710288406 A CN201710288406 A CN 201710288406A CN 106969621 A CN106969621 A CN 106969621A
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China
Prior art keywords
tank
air
powder
flow
plate
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CN201710288406.8A
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Chinese (zh)
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CN106969621B (en
Inventor
关玉明
崔佳
李朝
赵越
靳美娜
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TIANJIN MINGXING HENGNENG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Hebei University of Technology
Original Assignee
TIANJIN MINGXING HENGNENG SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Hebei University of Technology
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Priority to CN201710288406.8A priority Critical patent/CN106969621B/en
Publication of CN106969621A publication Critical patent/CN106969621A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/10Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/107Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers pneumatically inducing within the drying enclosure a curved flow path, e.g. circular, spiral, helical; Cyclone or Vortex dryers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/14Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001Handling, e.g. loading or unloading arrangements
    • F26B25/002Handling, e.g. loading or unloading arrangements for bulk goods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/22Controlling the drying process in dependence on liquid content of solid materials or objects
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00Drying solid materials or objects by processes involving the application of heat
    • F26B3/02Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried

Abstract

The invention discloses a kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder, it is characterised in that the drier includes weighing device, terminal pad, hot nitrogen air inlet pipe, inclined-plane sliding plate, connecting rod guide pipe, up and down connecting rod, stock guide, whirlwind escape pipe, one-level gas solid separation tank, air-flow tank, powder return tank, taper feeding plate, charge plate, supporting plate, discharge tank and cylinder;The upper end of the air-flow tank is circumferentially evenly distributed with four whirlwind escape pipes, and the inwall of the outer wall and air-flow tank of whirlwind escape pipe is tangent.The top of the hot nitrogen air inlet pipe, which is provided with supporting plate, supporting plate, is provided with charge plate;Hot nitrogen export structure is provided with the supporting plate, the structure causes the wind speed at charge plate to be 5~6 times that hot nitrogen enters gas tank wind speed;The drier is not required to be equipped with the function that cyclone separator can be achieved with cyclone separator, internal structure is simple, easily manufactured, and cleaning is simple, and manufacturing cost is low by rational structure design.

Description

A kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder
Technical field
The present invention relates to pneumatic conveying drying field, specifically a kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder.
Background technology
Pneumatic conveying drying, also referred to as wink-dry, are a kind of continuous efficient fluidization of solid drying means.Its handle is in pureed, Granular or the wet stock of bulk are sent into thermal current, therewith cocurrent, and during convection heat transfer' heat-transfer by convection mass transfer, velocity heated gas makes Wet stock disperses, during gas-solid concurrent flow so that vapor is evaporated, so as to obtain the scattered dry production granulated Product.Dry purpose is to remove some raw materials, the moisture or solvent of semi-finished product.
Current tubular type pneumatic conveyer dryer is divided into long-tube pneumatic conveyer dryer and short tube type pneumatic conveyer dryer.Wherein long-tube gas Flash dryer (such as application number 201310313792.3) has 15 meters to 20 meters high, and manufacture maintenance is inconvenient, and cleaning is difficult, right Requirement on height of workshop is higher, and gas-flow resistance is big, and power consumption is big, and operating cost is high.Short tube type pneumatic conveyer dryer is mainly spiral It is highly relatively low for tubular type pneumatic conveyer dryer (such as application number 200820237769.5), but internal structure is complicated, manufactures installation difficulty, Cleaning is inconvenient, it is necessary to be further provided with cyclone separator, and manufacturing cost is high.And two kinds of pneumatic conveyer dryer heat of what is more important Wind outlet uses mesh structure, and raw material cabin screen cloth easily blocks, hot blast can not in pipe smooth outflow, cause in drying process Disconnected, efficiency is low, the inconvenience factor such as need to repair.
The content of the invention
In view of the shortcomings of the prior art, it is circulating that the technical problem that the present invention is intended to solve is to provide a kind of anti-clogging powder Short tube pneumatic conveyer dryer.The drier employs new anti-blockage structure so that hot air circulation is smooth, and drying efficiency is high, no The problem of easily there is material leakage and dry insufficient.
The technical scheme of the present invention solution technical problem is to provide a kind of circulating short tube air-flow of anti-clogging powder and done Dry device, it is characterised in that the drier includes weighing device, terminal pad, hot nitrogen air inlet pipe, inclined-plane sliding plate, connecting rod and is oriented to Pipe, up and down connecting rod, stock guide, whirlwind escape pipe, one-level gas solid separation tank, air-flow tank, powder return tank, taper feeding plate, Sheng Flitch, supporting plate, discharge tank and cylinder;
The weighing device is positioned over drier lowermost end;The discharge tank is installed on weighing device;The powder is returned Flow tank and discharge tank connection;Powder return tank and discharge tank are cylindrical structure, powder return tank and discharge tank junction Bottom surface circular diameter is identical;The powder return tank is nested in outside air-flow tank;Air-flow tank and the connection of powder return tank;
The air-flow tank is integrally the cylindrical structure of diameter of section change, and top is large diameter cylinder, and bottom is small Diameter cylinders, bottom design is inverted frustum cone structure;The top of the air-flow tank has been uniformly distributed circumferentially four whirlwind Escape pipe, the inwall of the outer wall and air-flow tank of whirlwind escape pipe is tangent;The top of the one-level gas solid separation tank and air-flow tank Top is connected, and the shape of one-level gas solid separation tank is made up of the cylindrical structure on top and the frustum cone structure of bottom;One-level gas Gu the bottom surface of the cylindrical structure of knockout drum is located at the lower section of whirlwind escape pipe;In same section, one-level gas solid separation tank circle The annulus area formed between the inwall and air-flow tank wall of column structure is 3~6 times of the area of a circle of air-flow top tank structure;One Gap is left between the frustum cone structure and air-flow tank of level gas solid separation tank;The circumference of the small-diameter circular cylinder of the air-flow tank is provided with Manhole, frustum cone structure bottom surface is provided with through hole;The bottom of the air-flow tank cylindrical structure is circumferentially provided with manhole, circle Platform structure bottom surface is provided with through hole;The taper feeding plate is fixedly mounted on air-flow pot bottom inwall;The taper feeding plate Bottom surface and side be provided with through hole;
The hot nitrogen air inlet pipe passes through discharge tank, passes through the external nitrogen heating system of draught damper;Hot nitrogen air inlet pipe Bottom is connected with cylinder, and the output end of cylinder is connected with terminal pad;One end of the connecting rod is fixed in terminal pad, the other end with Stock guide is connected up and down;The connecting rod guide pipe is arranged on inclined-plane sliding plate;The outer ring of the inclined-plane sliding plate, which is welded on, unloads On the inwall of batch can, inner ring is welded on the outer wall of hot nitrogen air inlet pipe;The connecting rod guide pipe is welded on inclined-plane sliding plate, Connecting rod guide pipe is nested in outside connecting rod;The discharging pot bottom connects discharging opening;The top of the hot nitrogen air inlet pipe is provided with Charge plate is installed in supporting plate, supporting plate;Hot nitrogen export structure is provided with the supporting plate, the structure causes charge plate The wind speed at place is 5~6 times that hot nitrogen enters gas tank wind speed;The top outer wall of the hot nitrogen air inlet pipe is provided with cylindric support Structure so that charge plate is not contacted with the bottom surface of air-flow tank frustum cone structure;One end of stock guide and the supporting construction up and down Outer wall fit completely, when stock guide is moved to the top up and down, its other end is fitted with the inwall of powder return tank;
The powder return tank is the cylindrical structure of section circular diameter change, and the diameter on powder return tank top is more than powder Expect to form powder return tank frustum cone structure at the diameter of return tank bottom, diameter change;The feed pipe passes through powder return tank Installed in air-flow tank top, feed pipe passes through the external nitrogen heating system of draught damper;Powder backflow upper end is connected with muffler, Muffler passes through the external nitrogen heating system of draught damper;Humidity measurement instrument is installed in muffler;Powder return tank is connected with very Empty exhaust tube;The external vacuum system of vacuum exhaust pipe;On same section, powder backflow top tank structure and return tank cylindrical structure The annulus area formed between outer wall be one-level gas solid separation tank cylindrical structure inwall and air-flow tank wall between institute's shape Into 3~6 times of annulus area.
Compared with prior art, beneficial effect of the present invention is:
1) the taper feeding plate with ventilation holes structure so that hot air flow is clear and coherent smooth, and special cone angle design facilitates follow-up Discharging.
2) the charge plate of taper feeding plate bottom can a small amount of powder for being scattered from taper feeding plate of access, reduce original The waste of material.
3) cause hot air flow clear and coherent smooth according to the hot nitrogen export structure of De Laval noz(zle) principle design, can make at charge plate Wind speed it is higher;Also ensure that a small amount of powder being scattered on charge plate can be blown into hot air circulation drying again, be improved simultaneously Drying efficiency.
4) drier interior section airflow circulating, power consumption is small, and capacity usage ratio is high.
5) powder can detect drying effect in real time in drier inner loop by sensor, and drying effect is controllable.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram of embodiment of the circulating short tube pneumatic conveyer dryer of anti-clogging powder of the present invention;
Fig. 2 is the circulating short tube pneumatic conveyer dryer Fig. 1 of anti-clogging powder of the present invention close-up schematic view;
Fig. 3 is the circulating short tube pneumatic conveyer dryer Fig. 1 of anti-clogging powder of the present invention partial schematic sectional view;(in figure:1、 Weighing device;2nd, terminal pad;3rd, hot nitrogen air inlet pipe;4th, inclined-plane sliding plate;5th, connecting rod guide pipe;6th, connecting rod;7th, guide up and down Plate;8th, feed pipe;9th, vacuum exhaust pipe;10th, whirlwind escape pipe;11st, muffler;12nd, one-level gas solid separation tank;13rd, air-flow tank; 14th, powder return tank;15th, taper feeding plate;16th, charge plate;17th, supporting plate;18th, discharge tank;19th, discharging opening;20th, cylinder; 21st, supporting construction)
Embodiment:
The specific embodiment of the present invention is given below.Specific embodiment is only used for that the present invention is further described, and does not limit The application scope of the claims processed.
The invention provides a kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder (referring to Fig. 1-3, abbreviation drier), Including weighing device 1, terminal pad 2, hot nitrogen air inlet pipe 3, inclined-plane sliding plate 4, connecting rod guide pipe 5, up and down connecting rod 6, stock guide 7th, whirlwind escape pipe 10, one-level gas solid separation tank 12, air-flow tank 13, powder return tank 14, taper feeding plate 15, charge plate 16, Supporting plate 17, discharge tank 18 and cylinder 20;
The weighing device 1 is positioned over drier lowermost end, during charging, and feeding quantity is controlled according to weight;The discharging Tank 18 is installed on weighing device 1;The powder return tank 14 and discharge tank 18 are bolted, and are connected integral;Powder Return tank 14 and discharge tank 18 are the bottom surface circular diameter phase of cylindrical structure, powder return tank 14 and the junction of discharge tank 18 Together;The powder return tank 14 is nested in outside air-flow tank 13;Connected between air-flow tank 13 and powder return tank 14 by tie-beam Connect support;
The air-flow tank is integrally the cylindrical structure of diameter of section change, and top is large diameter cylinder, and bottom is small Diameter cylinders, bottom design is inverted frustum cone structure;The top of the air-flow tank 13 has been uniformly distributed circumferentially four rotations Wind escape pipe 10, the inwall of the outer wall and air-flow tank 13 of whirlwind escape pipe 10 is tangent;Whirlwind escape pipe 10 is by air-flow tank 13 Gas forms spiral wind in one-level gas solid separation tank 12;The top of the one-level gas solid separation tank 12 and the top of air-flow tank 13 Connection, the shape of one-level gas solid separation tank 12 is made up of the cylindrical structure on top and the frustum cone structure of bottom;One-level gas-solid The bottom surface of the cylindrical structure of knockout drum 12 is located at the lower section of whirlwind escape pipe 10;In same section, one-level gas solid separation tank The annulus area formed between the inwall and the outer wall of air-flow tank 13 of 12 cylindrical structures is the 3 of the area of a circle of the inwall of air-flow tank 13 ~6 times;Because the difference of volume makes the frustum cone structure combination shape of wind speed decreased, whirlwind escape pipe 10 and one-level gas solid separation tank 12 Into the effect similar to cyclone separator so that air-flow is after the blowout of whirlwind escape pipe 10, and gas flow rate is reduced rapidly so that gas Gu separation;Gap is left between the frustum cone structure and air-flow tank 13 of one-level gas solid separation tank 12 so that the powder energy separated It is enough to slide;The circumference of the small-diameter circular cylinder of the air-flow tank is provided with manhole, and frustum cone structure bottom surface is provided with through hole;It is described The bottom of the cylindrical structure of air-flow tank 13 is circumferentially provided with manhole, and frustum cone structure bottom surface is provided with through hole;The taper blanking Plate 15 is fixedly mounted in the bottom interior wall of air-flow tank 13, the intersection and taper feeding plate 15 of the side of taper feeding plate 15 and bottom surface The side inner walls of frustum cone structure be fixedly connected;The placement angle of taper feeding plate 15, can fall into powder as few as possible Between charge plate 16 and taper feeding plate 15, prevent powder from accumulating so that air current flow is smooth;The bottom of the taper feeding plate 15 Face is provided with through hole, and the through hole of large aperture is provided with sideways, is easy to pass through taper blanking from the hot blast that hot nitrogen air inlet pipe 3 is conveyed Plate 15 enters air-flow tank 13;The cone angle of the taper feeding plate 15 is powder angle of friction so that powder is easily along taper feeding plate 15 flow downward, discharging after being easy to;Ensureing the unobstructed logical premise of hot air flow using eurypyloue taper feeding plate structure is opened Under turn avoid powder dry it is insufficient, add hot air circulation drying efficiency and reliability;
The hot nitrogen air inlet pipe 3 passes through discharge tank 18, by the external nitrogen heating system of draught damper, is closed when vacuumizing Close so that pressurize in air-flow tank 13;The bottom of hot nitrogen air inlet pipe 3 is connected with cylinder 20, output end and the terminal pad 2 of cylinder 20 Connection;One end of the connecting rod 6 is fixed in terminal pad 2, and the other end is connected with stock guide 7 up and down, above and below promotion on stock guide 7 Lower movement;The connecting rod guide pipe 5 is arranged on inclined-plane sliding plate 4;The outer ring of the inclined-plane sliding plate 4 is welded on discharge tank 18 Inwall on, inner ring is welded on the outer wall of hot nitrogen air inlet pipe 3;The connecting rod guide pipe 5 is welded on inclined-plane sliding plate 4, Connecting rod is oriented to 5 pipes and is nested in outside connecting rod 6, and connecting rod 6 can be slided in connecting rod guide pipe 5;The bottom of discharge tank 18 connect to Under inclined discharging opening 19, discharging opening 19 is identical with the angle of inclination of inclined-plane sliding plate 4, and the end of discharging opening 19 is connected through a screw thread There is lid, pressurize is capped when vacuumizing;The top of the hot nitrogen air inlet pipe 3, which is provided with supporting plate 17, supporting plate 17, pacifies Equipped with charge plate 16;The charge plate 16 being capable of a small amount of powder for being fallen at taper feeding plate 15 of access;The supporting plate 17 On be provided with hot nitrogen export structure, the structure is that, according to De Laval noz(zle) principle design, the structure makes air current flow direction On sectional area reduce, the wind speed at charge plate 16 can be made higher, the wind speed at charge plate 16 is about the wind of hot nitrogen air inlet pipe 3 5~6 times of speed, so that the hot nitrogen export structure that the powder between charge plate 16 and taper feeding plate 15 is passed through into supporting plate 17 It is blown into air-flow tank 13 and is dried;The top outer wall of the hot nitrogen air inlet pipe 3 is provided with cylindric supporting construction 21, support The top of structure 21 is fixedly connected with the side outer wall of the frustum cone structure of air-flow tank 13 so that charge plate 16 and the round platform knot of air-flow tank 13 The bottom surface of structure is not contacted;Described one end of stock guide 7 up and down is fitted completely with the outer wall of supporting construction 21, up and down stock guide 7 When being moved to the top, its other end is fitted with the inwall of powder return tank 14;When discharging, stock guide above and below the promotion of cylinder 20 7 are moved down, and stock guide 7 is separated with the outer wall of supporting construction 21 up and down, and dry powder is slid to inclined-plane lubricating substance from this gap Plate 4;
The powder return tank 14 is the cylindrical structure of section circular diameter change, and the diameter on the top of powder return tank 14 is big The frustum cone structure of powder return tank 14 is formed at diameter in the bottom of powder return tank 14, diameter change;The feed pipe 8 passes through powder Expect return tank 14 to be arranged on the middle position on the top of air-flow tank 13, feed pipe 8 and charge door with cover, feed pipe 8 are installed Pass through the external nitrogen heating system of draught damper;The top of powder return tank 14 is connected with muffler 11, and muffler 11 passes through draught damper External nitrogen heating system;Humidity measurement instrument is installed in muffler 11;Powder return tank 14 is connected with vacuum exhaust pipe 9;Very The empty external vacuum system of exhaust tube, for before cyclic drying is carried out, being vacuumized in drier, making the crystallization water in powder It is more easy to vaporization;On same section, the annular formed between the outer wall of the inwall of powder return tank 14 and return tank cylindrical structure Area be the annulus area formed between the inwall and the outer wall of air-flow tank 13 of the cylindrical structure of one-level gas solid separation tank 12 3~ 6 times, because the difference of volume makes wind speed decreased, spiral wind and the frustum cone structure of powder return tank 14 are combined to form similar to whirlwind point From the effect of device, gas solid separation is carried out again.
The operation principle and workflow of the circulating short tube pneumatic conveyer dryer of anti-clogging powder of the present invention be:
1) feed:One end of stock guide 7 is fitted completely with the outer wall of supporting construction 21 above and below making, and the other end flows back with powder The inwall laminating of tank 14, is fed by the charge door on feed pipe 8, opens the draught damper that feed pipe 8 is connected, while charging By the inside nitrogen blowing of nitrogen heating system, while controlling feeding quantity according to weighing device 1, feed after terminating, close feed pipe 8 The draught damper of connection, simultaneously closes off charge door.
2) vacuumize:The draught damper of hot nitrogen air inlet pipe 3 is kept to close, discharging opening 19 is closed, the gas that muffler 11 is connected Valve is flowed to close.According to the difference of powder, vacuum is determined, when vacuum reaches certain value, closes what vacuum exhaust pipe 9 was connected Draught damper.Under vacuum, the water in hydrate is easier to separate out, and water is easier vaporization.Kept for a period of time.
3) powder cyclic drying:Open the draught damper of the connection of muffler 11, the draught damper that hot nitrogen air inlet pipe 3 is connected and go out Material mouth 19.It is blown into from hot nitrogen air inlet pipe 3 at a high speed by the nitrogen heated, hot nitrogen is by taper feeding plate 15, and hot nitrogen will While powder is blown afloat, fully contacted with powder, and carry out heat exchange, vaporize the moisture in powder, hot nitrogen band Raw material to flow out by four spirals of whirlwind escape pipe 10 at the top of air-flow tank 13, due to the cylinder knot of one-level gas solid separation tank 12 The annulus area formed between the inwall and the outer wall of air-flow tank 13 of structure is much larger than the area of a circle of the inwall of air-flow tank 13 so that flow velocity Decline, the frustum cone structure of whirlwind escape pipe 10 and one-level gas solid separation tank 12 combines to form the effect similar to cyclone separator, Gas solid separation, powder be slipped to above and below on stock guide 7, the manhole through air-flow tank 13 enters air-flow tank 13, through jet action, Into next circulation.Portion gas enters powder return tank 14, the inwall of powder return tank 14 and one-level with the moisture of vaporization The annulus area formed between the outer wall of the cylindrical structure of gas solid separation tank 12 is much larger than the cylinder of one-level gas solid separation tank 12 The annulus area formed between the inwall and the outer wall of air-flow tank 13 of structure so that air-flow reduction of speed again, spiral wind and powder The frustum cone structure of return tank 14 combines to form the effect similar to cyclone separator, powder slide to above and below stock guide 7, into next Circulation, portion gas is discharged with vapor cooled via return air pipe 11.Thus powder constantly circulates.
4) blanking:When the interior humidity measurement instrument installed of muffler 11 detects humidity and reaches the damp condition of requirement, close Close the draught damper of hot nitrogen air inlet pipe 3, the piston rod of cylinder 20 promotes terminal pad 2, drivening rod 6 make above and below stock guide 7 to moving down Dynamic, the inclined-plane of dried a part of taper feeding plate 15 of powder is fallen, and a part is from powder return tank 14 through stock guide 7 up and down Fall, dropped out through inclined-plane sliding plate 4 by discharging opening 19.
The present invention does not address part and is applied to prior art.

Claims (5)

1. a kind of circulating short tube pneumatic conveyer dryer of anti-clogging powder, it is characterised in that the drier includes weighing device, connection Disk, hot nitrogen air inlet pipe, inclined-plane sliding plate, connecting rod guide pipe, up and down connecting rod, stock guide, whirlwind escape pipe, one-level gas solid separation Tank, air-flow tank, powder return tank, taper feeding plate, charge plate, supporting plate, discharge tank and cylinder;
The weighing device is positioned over drier lowermost end;The discharge tank is installed on weighing device;The powder return tank With discharge tank connection;Powder return tank and discharge tank are the bottom surface of cylindrical structure, powder return tank and discharge tank junction Circular diameter is identical;The powder return tank is nested in outside air-flow tank;Air-flow tank and the connection of powder return tank;
The air-flow tank is integrally the cylindrical structure of diameter of section change, and top is large diameter cylinder, and bottom is minor diameter Cylinder, bottom design is inverted frustum cone structure;The top of the air-flow tank has been uniformly distributed circumferentially four whirlwind outlets Pipe, the inwall of the outer wall and air-flow tank of whirlwind escape pipe is tangent;The top of the one-level gas solid separation tank and the top of air-flow tank Connection, the shape of one-level gas solid separation tank is made up of the cylindrical structure on top and the frustum cone structure of bottom;One-level gas-solid point Bottom surface from the cylindrical structure of tank is located at the lower section of whirlwind escape pipe;In same section, one-level gas solid separation tank cylinder The annulus area formed between the inwall and air-flow tank wall of structure is 3~6 times of the area of a circle of air-flow top tank structure;One-level gas Gu leave gap between the frustum cone structure and air-flow tank of knockout drum;The circumference of the small-diameter circular cylinder of the air-flow tank is provided with circle Through hole, frustum cone structure bottom surface is provided with through hole;The bottom of the air-flow tank cylindrical structure is circumferentially provided with manhole, round platform knot Structure bottom surface is provided with through hole;The taper feeding plate is fixedly mounted on air-flow pot bottom inwall;The bottom of the taper feeding plate Face and side are provided with through hole;
The hot nitrogen air inlet pipe passes through discharge tank, passes through the external nitrogen heating system of draught damper;The bottom of hot nitrogen air inlet pipe It is connected with cylinder, the output end of cylinder is connected with terminal pad;One end of the connecting rod is fixed in terminal pad, the other end with up and down Stock guide is connected;The connecting rod guide pipe is arranged on inclined-plane sliding plate;The outer ring of the inclined-plane sliding plate is welded on discharge tank Inwall on, inner ring is welded on the outer wall of hot nitrogen air inlet pipe;The connecting rod guide pipe is welded on inclined-plane sliding plate, connecting rod Guide pipe is nested in outside connecting rod;The discharging pot bottom connects discharging opening;The top of the hot nitrogen air inlet pipe is provided with support Charge plate is installed in plate, supporting plate;Hot nitrogen export structure is provided with the supporting plate, the structure causes at charge plate Wind speed is 5~6 times that hot nitrogen enters gas tank wind speed;The top outer wall of the hot nitrogen air inlet pipe is provided with cylindric support knot Structure so that charge plate is not contacted with the bottom surface of air-flow tank frustum cone structure;One end of stock guide and the supporting construction up and down Outer wall is fitted completely, when stock guide is moved to the top up and down, and its other end is fitted with the inwall of powder return tank;
The powder return tank is the cylindrical structure of section circular diameter change, and the diameter on powder return tank top is returned more than powder Flow and powder return tank frustum cone structure is formed at the diameter of tank bottom, diameter change;The feed pipe is installed through powder return tank On air-flow tank top, feed pipe passes through the external nitrogen heating system of draught damper;Powder backflow upper end is connected with muffler, return-air Pipe passes through the external nitrogen heating system of draught damper;Humidity measurement instrument is installed in muffler;Powder return tank is connected with vacuum and taken out Tracheae;The external vacuum system of vacuum exhaust pipe;On same section, the outer wall of powder backflow top tank structure and return tank cylindrical structure Between the annulus area that is formed be to be formed between the inwall and air-flow tank wall of one-level gas solid separation tank cylindrical structure 3~6 times of annulus area.
2. the circulating short tube pneumatic conveyer dryer of anti-clogging powder according to claim 1, it is characterised in that taper feeding plate Side is fixedly connected with the intersection of bottom surface with the side inner walls of the frustum cone structure of taper feeding plate.
3. the circulating short tube pneumatic conveyer dryer of anti-clogging powder according to claim 1, it is characterised in that the taper falls The cone angle of flitch is powder angle of friction so that powder easily flows downward along taper feeding plate, discharging after being easy to.
4. the circulating short tube pneumatic conveyer dryer of anti-clogging powder according to claim 1, it is characterised in that discharging opening with tiltedly The angle of inclination of face sliding plate is identical.
5. the circulating short tube pneumatic conveyer dryer of anti-clogging powder according to claim 1, it is characterised in that supporting construction Top is fixedly connected with the side outer wall of air-flow tank frustum cone structure.
CN201710288406.8A 2017-04-27 2017-04-27 A kind of circulating short tube gas flow dryer of anti-clogging powder Active CN106969621B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107514894A (en) * 2017-08-31 2017-12-26 河北工业大学 Formula battery material drier is washed without screen cloth stream
CN109668403A (en) * 2018-11-19 2019-04-23 湖南全望信息科技有限公司 Grain drying device is used in a kind of experiment of agricultural sciences
CN112556363A (en) * 2020-12-08 2021-03-26 萍乡宝海锌营养科技有限公司 Drying furnace is used in zinc sulfate production
CN112857012A (en) * 2021-02-01 2021-05-28 河北工业大学 Prevent blockking up air flow dryer and wind speed hoist mechanism

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CN104949492A (en) * 2015-06-29 2015-09-30 江苏楷益智能科技有限公司 Flash dryer
CN105928359A (en) * 2016-06-06 2016-09-07 楚天科技股份有限公司 Box structure for tunnel sterilizing dryer and laminar flow control method of box
CN205939944U (en) * 2016-08-19 2017-02-08 深圳市欧普特工业材料有限公司 Vacuum drying oven is used in production of two ingredient organosilicon casting glues

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CN1076381A (en) * 1992-02-13 1993-09-22 普拉塞尔技术有限公司 Two stage membrane dryer
US20090178294A1 (en) * 2008-01-11 2009-07-16 Feitian Luo Nitrogen filling grain storage devices
CN203487120U (en) * 2013-09-24 2014-03-19 天地(唐山)矿业科技有限公司 Large-particle viscosity lignite-drying grading air flow dryer
CN104949492A (en) * 2015-06-29 2015-09-30 江苏楷益智能科技有限公司 Flash dryer
CN105928359A (en) * 2016-06-06 2016-09-07 楚天科技股份有限公司 Box structure for tunnel sterilizing dryer and laminar flow control method of box
CN205939944U (en) * 2016-08-19 2017-02-08 深圳市欧普特工业材料有限公司 Vacuum drying oven is used in production of two ingredient organosilicon casting glues

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107514894A (en) * 2017-08-31 2017-12-26 河北工业大学 Formula battery material drier is washed without screen cloth stream
CN107514894B (en) * 2017-08-31 2019-04-19 河北工业大学 No sieve stream washes formula battery material drier
CN109668403A (en) * 2018-11-19 2019-04-23 湖南全望信息科技有限公司 Grain drying device is used in a kind of experiment of agricultural sciences
CN112556363A (en) * 2020-12-08 2021-03-26 萍乡宝海锌营养科技有限公司 Drying furnace is used in zinc sulfate production
CN112857012A (en) * 2021-02-01 2021-05-28 河北工业大学 Prevent blockking up air flow dryer and wind speed hoist mechanism

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