CN2775574Y

CN2775574Y - Rotary mill flash drier

Info

Publication number: CN2775574Y
Application number: CN 200520069453
Authority: CN
Inventors: 尤晓栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-03-04
Filing date: 2005-03-04
Publication date: 2006-04-26
Anticipated expiration: 2015-03-04

Abstract

The utility model relates to a rotary mill flash drier, which can be used for directly pulverizing, drying and grinding moisture or lump material to powder. The utility model has the advantages of compact structure and reliable work. The utility model comprises a motor, a deceleration transmission mechanism and a barrel body. A main shaft supported on both ends of the barrel body is orderly provided with an air draft impeller, a cone, a breaking knife, grinding pans and a centrifugal fan impeller from bottom to top, and the barrel body is correspondingly split into a hot air cavity, a drying cavity and a grinding cavity. The hot air chamber is communicated with the drying chamber and the grinding chamber on the upper part by an annular airway between the outer periphery of the air draft impeller and the inner wall of the barrel body. The air draft impeller and the centrifugal fan impeller rotate with the main shaft, which provides the airflow of the pressure of 400 to 600 mmH2O. Materials in the drying chamber are supported and dried in flash by the cone and the airflow. More than three sets of grinding pans are axially arranged in the grinding chamber, and grinding blocks on the grinding pans are arranged in stagger. A lining plate with slots is arranged on the inner wall of the barrel body of the grinding chamber. The main shaft drives the grinding pans to rotate, which enables the airflow to form vortex flow in the slots of the lining plate for grinding the materials.

Description

Rotary grinding flash drier

Technical field

The utility model relates to a kind of drying equipment, especially relates to a kind of pulverizing, dry and grind and be the rotary grinding flash drier of one that collects.

Background technology

When normal temperature is machined to granular material to moist material or lump material, at first be that moist material or lump material are put into crusher for crushing to the granule drying, send into again and carry out fine powder in the vortex grinding machine and be broken to granular material, make material reach the required quality requirement of product.But because the pulverizing of moist or lump material is processed must be segmental machining, and not only processing technology complexity, and device therefor is more, exists to produce continuously, and production efficiency is low, the problem that energy consumption is high.On the other hand, for reaching the required energy of dry materials, the common external thermal source of cylindrical shell, and provide the work negative pressure of inner barrel by external powerful air-introduced machine, but external air-introduced machine causes gas-flow resistance bigger because pipeline is long and elbow, be subjected to the restriction of inner barrel structure in addition, in cylindrical shell, can produce bigger pressure drop, be difficult for satisfying the requirement of material expansion drying, so normally the power by increasing air-introduced machine and equipment that increase matches solve.Not only cause the equipment complexity, functional reliability descends, and occupation area of equipment is big, and energy waste is serious.At the problems referred to above, the high speed turnery drying machine of my design, be that suction impeller is built in the cylindrical shell, and be positioned at the top of broken cutter, after the material fragmentation, suck by suction impeller in the drying chamber on top, but when material enters top by suction impeller, the high speed rotating of suction impeller can be collided with the material thing, not only lowers the air output of suction impeller, and has quickened the wearing and tearing of suction impeller.Moreover since in the crusher chamber of suction impeller bottom when material is carried out drying, be difficult for reaching simultaneously the condition of material expansion drying and abrasive dust, energy consumption is higher.

Goal of the invention

The utility model is for solving above-mentioned weak point, provides a kind of and can be continuously moist or lump material pulverized, is dried to the powder shape and produces, and satisfies material expansion drying and abrasive dust condition simultaneously, and energy consumption is low, the rotary grinding flash drier of reliable operation.

The utility model is that the technical scheme that solves the problems of the technologies described above is: a kind of rotary grinding flash drier, comprise motor, be arranged on reduction gearing mechanism in the casing and the cylindrical shell that is provided with air inlet, charging aperture and discharging opening, described motor drives the main shaft that supporting is connected the cylindrical shell both end sides by reduction gearing mechanism, main shaft is equipped with suction impeller, the cone that is connected with the suction impeller top seal, broken cutter, abrasive disk and centrifugal blower fan blade wheel from bottom to up successively, correspondingly cylinder lumen is divided into hot blast chamber, drying chamber and abrasive dust chamber; Air inlet on the cylindrical shell and discharging opening lay respectively at the bottom of suction impeller and the top of centrifugal blower fan blade wheel, charging aperture on the cylindrical shell is positioned at broken cutter one side, the hot blast chamber communicates with the drying chamber and the abrasive dust chamber on top with annular air channel between the cylinder inboard wall by the suction impeller neighboring, and suction impeller and centrifugal blower fan blade wheel rotate with main shaft 400-600mmH is provided ₂The air-flow of O pressure, material is supported by cone and air-flow in drying chamber, behind the expansion drying with air-flow to the abrasive dust chamber on top, axially be provided with three groups in the abrasive dust chamber with top lap, and the setting that interlaces of the abrading block on the abrasive disk, the inwall that cylindrical shell is positioned at the abrasive dust chamber is provided with the liner plate of with groove, and main shaft drives abrasive disk and rotates and make air-flow form eddy current in the liner plate groove material is ground.

Advantage was after the utility model adopted technique scheme: 1, collection pulverizing, grinding, drying are one.The utility model is provided with suction impeller, broken cutter, abrasive disk and centrifugal blower fan blade wheel respectively on main shaft, the motor-driven main shaft runs up, so can disposable moist material or lump material be carried out fragmentation, drying, grinding until making powder, not only compact conformation, succinct is convenient to maintaining, the flow process of simplified processing process, realize producing continuously, increase substantially production efficiency, and, also reduced energy consumption owing to reduced corollary equipment.2, compact conformation, the energy utilization rate height.The utility model adopts built-in suction impeller and centrifugal blower fan blade wheel, when suction impeller and centrifugal blower fan blade wheel work, can produce 400-600mmH in cylindrical shell ₂The pressure of O can satisfy expansion drying simultaneously and grind required operating pressure.Built-in suction impeller and centrifugal blower fan blade wheel have also reduced the air-flow internal resistance, and especially the centrifugal blower fan blade wheel of top setting easily guarantees the work negative pressure that cylindrical shell is required, energy utilization rate height.3, low, the reliable operation of energy consumption.The charging aperture of the utility model rotary grinding flash drier and broken cutter all are arranged on the top of suction impeller, hot blast chamber in the cylindrical shell, the pressure in drying chamber and abrasive dust chamber is changed to the negative pressure at top from the malleation of bottom, and positive negative pressure is positioned at drying chamber zero point, so can carry out expansion drying efficiently to the material in the drying chamber, improve drying efficiency, energy consumption is low, the utility model is because the top of suction impeller is provided with cone again, utilize the air flue of variable cross-section that the cylindrical shell internal gas pressure is changed gently, and cone makes material shape fluosolids in drying chamber, under the high speed turning effort of broken cutter, the boiling bed that forms in the drying chamber fully carries out expansion drying to material.The utility model not only utilizes cone and air-flow that lump material is supported, and because material is the top that is suspended in suction impeller, material does not contact with suction impeller, can not influence the air output of suction impeller, and also improve its service life, compact conformation is reasonable, reliable operation.4, the convenient interior operating pressure of cylindrical shell and the fineness of granular material of regulating.The utility model can be controlled the operating pressure required in the cylindrical shell and the humidity of material by the rotating speed of regulating main shaft because suction impeller all is connected on the main shaft with centrifugal blower fan blade wheel, and is easy to adjust reliable.Simultaneously also can be by regulating the speed of mainshaft, the fineness of regulating material.

The operation principle of utility model is: the charging aperture of delivering to cylindrical shell when the moist material of bulk by feed appliance, suction impeller and centrifugal blower fan blade wheel are under high speed rotary motion, guarantee the required pressure of dry materials, main shaft drives broken cutter with the moment fragmentation of the moist material of bulk, relatively large block moist material after the fragmentation is at the effect low suspension of cone and air-flow, can not fall and quilt continuation fragmentation, short grained moist material is then under the effect of turbulent airflow, in the drying chamber of the variation of positive negative pressure, form boiling bed, material is carried out expansion drying and delivers in the abrasive dust chamber with air-flow.After material enters the abrasive dust chamber; the also rotation at a high speed under the drive of main shaft of many group abrasive disks; and in the abrasive dust chamber, produce the powerful high swirling eddy; and the high speed swirling eddy forms the air micro cyclone of numerous rotation in the groove of cylindrical shell liner; these swirling air streams make material particles run foul of each other and the formation powdery that breaks; in the material particles process of lapping, the heat of generation makes material rapid draing simultaneously, and the powder after grinding is collected by discharging opening.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the side-looking structural representation of Fig. 1.

Fig. 3 is the plan structure schematic diagram of Fig. 1.

Fig. 4 is the sectional structure schematic diagram of the A-A of Fig. 1.

Wherein: 1-motor; 2-casing; 3-reduction gearing mechanism; 4-suction impeller; 5-main shaft; 6-step; 7-cone; 8-broken cutter; 9-cylindrical shell; 9-1-charging aperture; 9-2-cylinder assembly; 9-3-discharging opening; 9-4-air inlet; 10-abrasive disk; 11-liner plate; 12-centrifugal blower fan blade wheel; 13-top chock.

The specific embodiment

See the rotary grinding flash drier shown in Fig. 1-3, comprise motor 1, casing 2, transmission mechanism 3, cylindrical shell 9 and main shaft 5, motor 1, reduction gearing mechanism 3 and cylindrical shell 9 are fixedly connected on the casing 2, cylindrical shell 9 is assembled and is formed by a plurality of flange terminal pad cylinder assembly 9-2 that have, on cylindrical shell 9, be provided with air inlet 9-4, charging aperture 9-1 and discharging opening 9-3, the two ends of main shaft 5 are connected on the cylindrical shell 9 by bearing and top chock 13 and step 6, the lower end of main shaft 5 passes cylindrical shell 9 and is connected with reduction gearing mechanism 3, reduction gearing mechanism 3 can adopt belt, chain or gear drive are slowed down, motor 1 is by reduction gearing mechanism 3 drive shaft 5 high-speed motions, and the rotating speed of the utility model main shaft 5 can rotation under 950r/min～1500nr/min high speed.See shown in Figure 1, main shaft 5 is equipped with suction impeller 4 from bottom to up successively, the cone 7 that links into an integrated entity with suction impeller 4 tops, broken cutter 8, abrasive disk 10 and centrifugal blower fan blade wheel 12, correspondingly cylindrical shell 9 inner chambers are divided into the hot blast chamber, drying chamber and abrasive dust chamber, 8 two on broken cutter or even number are being connected on the main shaft 5, when main shaft 5 rotates, drive suction impeller 4, cone 7, broken cutter 8, abrasive disk 10 and centrifugal blower fan blade wheel 12 rotate simultaneously, suction impeller 4 air-supplies also produce radial and axial turbulent airflow, and suction impeller 4 and centrifugal blower fan blade wheel 12 provide 400-600mmH ₂The air-flow of O pressure satisfies the requirement of material expansion drying and grinding.

Air inlet 9-4 on the utility model cylindrical shell 9 and discharging opening 9-3 lay respectively at the bottom of suction impeller 4 and the top of centrifugal blower fan blade wheel 12, and the hot blast chamber communicates with the drying chamber and the abrasive dust chamber on top with annular air channel between cylindrical shell 9 inwalls by suction impeller 4 neighborings.The charging aperture 9-1 of cylindrical shell 9 is positioned at the middle part of two broken cuttves 8, or even number is the middle part of broken cutter 8 symmetries, the external feed screw of charging aperture 9-1, the lump material that enters in the cylindrical shell 9 is broken fast, heavier lump material is in cone 7 and air-flow effect lower support, suspension, small particles material carries out expansion drying by turbulent airflow in drying chamber, and delivers to the abrasive dust chamber on top equably.Suction impeller 4 of the present utility model has outward extending air baffle ring, distance between the radial periphery of air baffle ring and cylindrical shell 9 inwalls is at 10mm-50mm, and the axial distance between the bottom surface of suction impeller 4 air baffle rings and cylindrical shell 9 flange faces prevents that at 10mm-50mm air-flow from flowing backwards.See shown in Figure 1,3-8 group abrasive disk 10 axially is set in the abrasive dust chamber, the setting that interlaces of abrading block on all abrasive disks 10, be the uniformity that guarantees to grind, each abrading block of organizing abrasive disk 10 is curved arrangement clocklike, can become shapes such as spirality or wave, preferably the spacing between the liner plate 11 in the abrading block of each abrasive disk 10 and the cylindrical shell 9 is at 1mm-3mm.See shown in Figure 4; cylindrical shell 9 inwalls in abrasive dust chamber are provided with the liner plate 11 of with groove; the profile of tooth of liner plate 9 can adopt equilateral or unequal-sided zigzag; abrasive disk 10 makes air-flow form numerous little air-swirl in each groove under the rotation of the high speed of main shaft 5, material particles is run foul of each other break the formation powdery by air-swirl; collide the heat that is produced by friction simultaneously; make material rapid draing, last granular material is by centrifugal blower fan blade wheel, from the discharging opening 9-3 collection on cylindrical shell 9 tops.

Claims

1, a kind of rotary grinding flash drier, comprise motor (1), be arranged on the reduction gearing mechanism (3) in the casing (2) and be provided with air intake (9-4), the cylindrical shell (9) of charging aperture (9-1) and discharging opening (9-3), it is characterized in that: described motor (1) drives the main shaft (5) that supporting is connected cylindrical shell (9) both end sides by reduction gearing mechanism (3), main shaft (5) is equipped with suction impeller (4) from bottom to up successively, the cone (7) that is connected with suction impeller (4) top seal, broken cutter (8), abrasive disk (10) and centrifugal blower fan blade wheel (12) correspondingly are divided into the hot blast chamber with cylindrical shell (9) inner chamber, drying chamber and abrasive dust chamber; Air inlet (9-4) on the cylindrical shell (9) and discharging opening (9-3) lay respectively at the bottom of suction impeller (4) and the top of centrifugal blower fan blade wheel (12), charging aperture (9-1) on the cylindrical shell (9) is positioned at broken cutter (8) one sides, the hot blast chamber communicates with the drying chamber and the abrasive dust chamber on top with annular air channel between cylindrical shell (9) inwall by suction impeller (4) neighboring, and suction impeller (4) and centrifugal blower fan blade wheel (12) rotate with main shaft (5) 400-600mmH is provided ₂The air-flow of O pressure, material in drying chamber by the supporting of cone (7) and air-flow, behind the expansion drying with the abrasive dust chamber of air-flow to top; Axially be provided with three groups in the abrasive dust chamber with top lap (10), and the setting that interlaces of the abrading block on the abrasive disk (10), the inwall that cylindrical shell (9) is positioned at the abrasive dust chamber is provided with the liner plate (11) of with groove, and main shaft (5) drives abrasive disk (10) and rotates and make air-flow form eddy current in liner plate (11) groove material is ground.

2, rotary grinding flash drier according to claim 1 is characterized in that: (8) two on described broken cutter or even number are being connected on the main shaft (5).

3, rotary grinding flash drier according to claim 1 and 2 is characterized in that: the charging (9-1) on the described cylindrical shell (9) is positioned at two or even number the middle part of broken cutter (8).

4, rotary grinding flash drier according to claim 1 is characterized in that: described suction impeller (4) has outward extending air baffle ring, and the distance between the radial periphery of air baffle ring and cylindrical shell (9) inwall is at 10mm-50mm.

5, according to claim 1 or 4 described rotary grinding flash driers, it is characterized in that: the axial distance between the bottom surface of described suction impeller (4) air baffle ring and cylindrical shell (9) flange face is at 10mm-50mm.

6, rotary grinding flash drier according to claim 1 is characterized in that: the spacing between the abrading block of described abrasive disk (10) and the liner plate (11) is at 1mm-3mm.