CN201664620U

CN201664620U - Stirring mechanism of stirring grinding machine

Info

Publication number: CN201664620U
Application number: CN200920298249XU
Authority: CN
Inventors: 曲丽伟; 叶进甫; 吕春常
Original assignee: PINGDINGSHAN COAL INDUSTRIAL GROUP PINGDINGSHAN EASILY INTO SILICON CARBIDE PRODUCTS Co Ltd
Current assignee: PINGDINGSHAN YICHENG NEW MATERIAL CO Ltd
Priority date: 2009-12-30
Filing date: 2009-12-30
Publication date: 2010-12-08
Anticipated expiration: 2019-12-30

Abstract

The utility model discloses a stirring mechanism of a stirring grinding machine. The stirring mechanism comprises a stirring drum and a transmission main shaft; a grinding medium is arranged in the stirring drum; the transmission main shaft is axially inserted into the stirring drum; and a stirring bar is radially fixed on the transmission main shaft and comprises a base with a star gear structure with over three convex teeth, the convex teeth on the base are radially distributed in equal angle, and a hammer made of abrasion-resistant material and used for driving the grinding medium to rotate is radially fixed at the tooth crest of each convex tooth along the radial direction of the transmission main shaft. By adopting the structure, the stirring bar adopts the base with the star gear structure and the width of the root of the stirring bar in the rotating direction is greater than the width at the end so that the root of the stirring bar can bear an acting force of greater torque, the breakage phenomenon of the stirring bar under the conditions of high load and high-speed rotation is avoided and the maintenance and use costs are reduced.

Description

A kind of stirring mill pulverizer rabbling mechanism

Technical field

The utility model belongs to material and pulverizes the field, relates generally to the broken equipment of a kind of stirring abrasive dust, definite a kind of rabbling mechanism that stirs the mill pulverizer of saying so.

Background technology

The equipment that is used for ultra-fine grinding at present mainly comprises airflow milling, Raymond mill and stirring mill, stirs wherein that mill is full with its product particle shape, stock-removing efficiency is high and is widely used in the extra-fine grinding operation in fields such as paint, pigment, coating, magnetic material.The core technology that stirs mill is the structure of rabbling mechanism, existing stirring mill main by mixing drum, transmission main shaft and the stirring rod that is used to drive the abrasive media rotation form, transmission main shaft inserts in the mixing drum vertically, and the stirring rod layering radially is fixed on the transmission main shaft.During work, stirring rod drives abrasive media generation rotation and rotates at a high speed along mixing drum, material is played the effect of pulverizing, the mixing drum bottom offers air inlet, material reaches graded region under the drive of the air quantity that air inlet enters, thereby obtains the product of the granularity of wanting.But the existing stirring rod that stirs in the mill is the cylindrical shape structure that radially is fixed on the transmission main shaft, along with the increase of stirring the mill size, the length of each stirring rod also increases thereupon, rotate the stressed increase of its root under the situation that columned stirring rod is more at material, load is bigger at a high speed, cause the stirring rod fracture easily, damage and stir mill, increase the maintenance and the use cost that stir mill; And existing angle, shape, the number that stirs mixing drum air inlet in the mill designs unreasonable, incoming air area in crushing process is less, cause and have energy wind dead angle in the mixing drum inner chamber, grindability is on the low side, thereby cause equipment capacity, the percentage of A-class goods not high, seriously restrict the raising of material interior quality and output, made production cost high; In addition, the phenomenon that abrasive media runs serious wear between leakage, stirring rod and the mixing drum base plate also often appears in the mixing drum air inlet, causes the equipment life cycle shorter, has increased maintenance capacity and production cost.

The utility model content

The purpose of this utility model is at above-mentioned defective, and a kind of rabbling mechanism that stirs the mill pulverizer is provided, and the stirring rod in this rabbling mechanism has the advantages that should not rupture under high capacity, high speed rotation status.

For achieving the above object, the technical solution of the utility model is: a kind of stirring mill pulverizer rabbling mechanism, comprise mixing drum and transmission main shaft, be provided with abrasive media in the mixing drum, described transmission main shaft axially inserts in the mixing drum, on transmission main shaft, radially be fixed with stirring rod, described stirring rod comprises having three pedestals with the pocket-wheel structure of upper raised teeth, each double wedge on pedestal equal angles radially distributes, and radially is fixed with the tup that is configured for driving the abrasive media rotation by high-abrasive material at the tooth top of each double wedge along transmission main shaft.

Adjacent side on the described pedestal between adjacent two double wedges is continuous arcuate structure.

Described tup is that width and thickness are all greater than the rectangular structure of each double wedge of pedestal.

Axial restraint has two-layer at least stirring rod on the described transmission main shaft, and each double wedge on each layer stirring rod pedestal is interspersed.

Described mixing drum comprises the barrel of hollow annular structure, on the barrel of the bottom of mixing drum, circumferentially offer air inlet, each air inlet is the horn mouth structure of its inboard A/F greater than the outer openings width, and the outer openings width of each air inlet is less than the diameter of described abrasive media.

Described each air inlet circumferentially is equally spaced along annular tube wall.

The utility model adopts said structure, stirring rod adopts the width of the width of its root of pedestal on direction of rotation of pocket-wheel structure greater than the end, make the root of stirring rod can bear the active force of bigger moment, the phenomenon of having avoided stirring rod to rupture under high capacity, high speed rotating condition has reduced maintenance cost; And the utility model increases and has improved the size of mixing drum air inlet, has adjusted the angle of air inlet, has increased the ventilation of system, has reduced dead corner, has improved the production capacity and the percentage of A-class goods, has also avoided abrasive media to run the phenomenon of leaking simultaneously from air inlet.

Description of drawings

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

Fig. 2 is a vertical view of the present utility model.

The specific embodiment

As shown in Figure 1 and Figure 2, the core that stirs mill is a rabbling mechanism, comprising transmission main shaft 1, stirring rod 2 and mixing drum 4, transmission main shaft 1 axially inserts in the mixing drum 4, axial restraint has two-layer stirring rod 2 on the transmission main shaft 1, the stirring rod 2 of each layer comprises the pedestal of the pocket-wheel structure with four double wedges, and each double wedge on pedestal equal angles radially distributes, and the double wedge of each layer stirring rod is interspersed.Adjacent side on the pedestal between adjacent two double wedges is continuous arcuate structure.The tooth top of each double wedge along transmission main shaft radially be fixed with the tup 3 that is configured for driving the abrasive media rotation by high-abrasive material, each tup 3 is its width and thickness all greater than the rectangular structure of pedestal.

Mixing drum 4 comprises the barrel of hollow annular structure, the bottom of barrel is provided with base plate, on the barrel of the bottom of mixing drum 4, circumferentially offer 50-55 air inlet 5, each air inlet 5 circumferentially is equally spaced along the ring-type barrel, and each air inlet is the horn mouth structure of its inboard A/F greater than the outer openings width.

In concrete enforcement, the barrel of mixing drum adopt diameter be 780mm-800mm, high for 450mm-500mm, thickly make for the cold-rolled steel of 10mm-12mm or manganese 60 steel, each air inlet 5 is 150mm * 4mm-150mm * 6mm for outside bore, and inboard bore is the vertical bar shaped horn mouth structure of 150mm * 10mm-150mm * 16mm.For reducing manufacturing cost, the star pedestal adopts the long steel plate formation of making for the cold-rolled steel of 200-300mm or manganese 60 steel, it is that 50mm-80mm, thickness are that the wear-resisting track steel board of 35mm-40mm welds one up and down and constitutes that tup adopts two long 100mm-150mm, width, during installation, the bottom of stirring rod is apart from the about 45-60mm of the base plate of mixing drum.The structure and the size design of stirring rod are reasonable in this practical example, stir area and increase, and have improved the classification production capacity of powder; Increase and improved the size of ventilating opening, adjusted the angle of ventilating opening, increased the ventilation of system, reduced dead corner, improved the production capacity and the percentage of A-class goods; And the contact area that it has increased tup and steel ball has improved grindability; Simultaneously, improve the material of easily worn part, prolonged service life, reduced maintenance cost.

Claims

1. one kind is stirred mill pulverizer rabbling mechanism, comprise mixing drum and transmission main shaft, be provided with abrasive media in the mixing drum, described transmission main shaft axially inserts in the mixing drum, on transmission main shaft, radially be fixed with stirring rod, it is characterized in that, described stirring rod comprises having three pedestals with the pocket-wheel structure of upper raised teeth, each double wedge on pedestal equal angles radially distributes, and radially is fixed with the tup that is configured for driving the abrasive media rotation by high-abrasive material at the tooth top of each double wedge along transmission main shaft.

2. stirring mill pulverizer rabbling mechanism according to claim 1 is characterized in that the adjacent side on the described pedestal between adjacent two double wedges is continuous arcuate structure.

3. stirring according to claim 2 mill pulverizer rabbling mechanism is characterized in that, described tup is that width and thickness are all greater than the rectangular structure of described pedestal.

4. stirring mill pulverizer rabbling mechanism according to claim 3 is characterized in that axial restraint has two-layer at least stirring rod on the described transmission main shaft, and each double wedge on each layer stirring rod pedestal is interspersed.

5. according to claim 1 or 2 or 3 or 4 described stirring mill pulverizer rabbling mechanisms, it is characterized in that, described mixing drum comprises the barrel of hollow annular structure, on the barrel of the bottom of mixing drum, circumferentially offer air inlet, each air inlet is the horn mouth structure of its inboard A/F greater than the outer openings width, and the outer openings width of each air inlet is less than the diameter of described abrasive media.

6. stirring mill pulverizer rabbling mechanism according to claim 5 is characterized in that described each air inlet circumferentially is equally spaced along annular tube wall.