CN2235327Y - Vertical faced gas current jeting crushing and sorting machine - Google Patents

Abstract

The utility model relates to a vertical opposite jetting airflow crushing and grading machine which is composed of a vertical grader and an opposite jetting crusher. The clearance between the engaging surfaces of the convex concave end surface of the grading wheel of the grader and the concave convex end surface of a material discharge neck is a maze clearance. The air seal mechanism on the material discharge neck, which is composed of a balancing ring, an outer ring and an inner ring, makes the maze clearance segmented and air sealed so as to make the pressure difference in the meander clearance null and eliminate frictional heat buildup. The utility model increases the precision of grading and prolongs the service life of the grading wheel, suitable for crushing light weight materials with higher purity and for high precision grading.

Description

Vertical to gaseous blast crushing and classification machine

The utility model is a kind of vertical to gaseous blast crushing and classification machine, belongs to the further improvement of vertical air-flow to the broken grader structure of dusting.

General vertical air-flow by spray crushing chamber and grader are formed, is usually used in the crushing and classification of soft, low-gravity light material to the broken grader that dusts.For guaranteeing the high speed rotating of grading wheel, must leave the gap between the upper surface of housing internal classification wheel and the discharge neck end face on the housing, during the grading wheel high speed rotating, classified blade of taking turns of the fines that crushes and center discharging opening are sent from the discharge eck, reach the purpose of crushing and classification.Its weak point is: 1, when the grading wheel high speed rotating, beginning, the terminal in gap exist pressure reduction, the meal material easily enters this gap inevitably, and enter by this gap in the fine powder material of discharging opening, make the Granularity Distribution inequality, effectiveness of classification is low, for a long time, the classification of light material be difficulty 2, the meal material causes the serious wear of grading wheel in the gap, service life is short, also cause the heating and the temperature rise of grader because of the grading wheel friction, make machine can not be used for the classification of responsive to temperature material grinding, the scope of application is limited.3, because the discharging opening of grading wheel head center is a straight-tube shape, identical with the diameter of discharge gate, so the fine powder of taking out of with high velocity air behind the classified impeller blade is very big to the friction dynamics of discharge gate wall, friction and wear is very big relatively.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and provides a kind of vertical to gaseous blast crushing and classification machine, can eliminate gap beginning, the pressure reduction of terminal and the friction of grading wheel fully, realize no pressure reduction classification, improve the service life of effectiveness of classification and grading wheel.

The purpose of this utility model can reach by following measure: form by grader with to the broken machine that dusts, gap between meshing of the convex-concave shape upper surface of grading wheel and the concavo-convex end face on the discharge neck constitutes the gap, labyrinth, have on the discharge neck one can be to the sealing gland mechanism of gap, labyrinth sealing gland.

The purpose of this utility model can also reach by following measure: the sealing gland mechanism on the grader discharge neck is made up of gimbal, outer shroud and interior ring, its center is a discharge gate, the meshing gap of the concavo-convex end face of being made up of gimbal, outer shroud and interior ring and the convex-concave shape end face of grading wheel head constitutes the gap, labyrinth, between gimbal and the outer shroud, all are air chambers between outer shroud and the interior ring, the annular space winding-up gap that is communicated with the gap, labyrinth is all arranged on each air chamber, and the annular space winding-up gap of the air chamber of gimbal and outer interannular is greater than the annular space winding-up gap of the air chamber of outer shroud and interior interannular; The discharging opening of grading wheel head center is horn-like, and its osculum is towards the discharge neck; On two air chambers the joint that connects source of the gas is arranged all.

Description of drawings: Fig. 1 is the utility model structure chart

Fig. 2 is the utility model grader part section structure chart

The utility model is compared prior art and is had following advantage: 1, adopting the gap of grading wheel upper surface and discharge neck end face is structure and the discharge neck in gap, labyrinth The upper sealing mechanism that is made up of interior ring, outer shroud, gimbal, the gap, labyrinth makes meal be difficult for entering it In; By regulating the joint that connects source of the gas on two air chambers in the sealing mechanism, make outer shroud and interior ring Between air pressure in the air chamber greater than the air pressure at top, gap, labyrinth and the gas in gimbal and the outer interannular air chamber Press, the gas of two interior certain pressures of air chamber is jetted the gap with gap, labyrinth segmentation sealing gland by annular space, The pressure of gap, labyrinth beginning, terminal is tended to balance, thereby eliminated fully gap, the labyrinth beginning, whole The pressure reduction of end, making its pressure reduction is zero, has both guaranteed the high speed rotating of grading wheel, avoids again coarse dust Bring into, make Granularity Distribution even, greatly improved effectiveness of classification, solved light material The problem that is difficult to the high accuracy classification. 2, the air seal structure that adopts inner and outer rings, gimbal to form avoids meal to enter the gap, labyrinth, Eliminate the wearing and tearing of grading wheel, both prolonged the service life of grading wheel, solved again the frictional heating temperature The problem that rises. 3, the discharging opening of grading wheel head is horn-like, and its osculum is towards the discharge neck, classifiedly takes turns discharging Mouthful fine powder of taking out of with air-flow, go out horn mouth after very fast release slow down, fine powder rubs to the discharge gate wall The wiping dynamics is slowed down, wearing and tearing reduces greatly.

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:

As shown in Figure 1: vertical to gaseous blast crushing and classification machine by vertical grader (15) and to the spray pulverizer (16) form, the grading wheel (2) that is fastened on the machine shaft is arranged in the housing of grader (1) and be fixed in discharge neck (3) on the housing (1), on the spray pulverizer (16) pair jet pipe (17) and feed hopper (18) being arranged.

As shown in Figure 2: on the discharge neck (3) of grader a sealing gland mechanism is arranged, form by gimbal (5), outer shroud (7) and interior ring (9), its center is discharge gate (14), and the gap between meshing of the concavo-convex end face of being made up of gimbal (5), outer shroud (7) and interior ring (9) and the convex-concave shape end face of grading wheel head (8) constitutes gap, labyrinth (12).Be air chamber (4) between gimbal (5) and the outer shroud (7), and the annular space winding-up gap (10) in gap, communication gap labyrinth (12) arranged, be air chamber (6) between outer shroud (7) and the interior ring (9), and the annular space winding-up gap (11) that is communicated with gap, labyrinth (12) arranged, all there is the joint that connects source of the gas in the annular space winding-up gap (10) of air chamber (4) greater than air chamber (6) annular space winding-up gap (11) on air chamber (4), (6).The discharging opening (13) at grading wheel head (8) center is horn-like, and its osculum is towards discharge neck (3).

By regulating the joint that connects source of the gas on two air chambers, make air pressure in the air chamber (6) greater than the air pressure at top, gap, labyrinth (12) and the air pressure in the air chamber (4), and the gas of certain air pressure is jetted gap (10), (11) with gap, labyrinth (12) segmentation sealing gland by annular space in the air chamber, the pressure in gap, labyrinth (12) is tended to balance, begin in the gap, labyrinth, the pressure reduction of terminal thereby eliminated fully, and its pressure reduction is zero.Both guaranteed the high speed rotating of grader grading wheel, avoid bringing into of coarse dust again, the friction of grading wheel and the problem of heating up have been eliminated, make Granularity Distribution even, improved effectiveness of classification, prolong the service life of grading wheel, can be used for the higher degree and the high-precision crushing and classification of general light material, enlarged the scope of application.

Claims (5)

1, vertical to gaseous blast crushing and classification machine, form by vertical grader with to the broken machine that dusts, grader includes grading wheel that connects machine shaft in the housing and the discharge neck that is fixed on the housing, blade and discharging opening are arranged on the grading wheel, gapped between its upper surface and the discharge neck end face, it is characterized in that: gap between meshing of the convex-concave shape end face of the grading wheel end (8) of grader and the concavo-convex end face of discharge neck (3) constitutes gap, labyrinth (12), have on the discharge neck (3) one can be to the sealing gland mechanism of gap, labyrinth (12) sealing gland.

2, as claimed in claim 1 vertical to gaseous blast crushing and classification machine, it is characterized in that sealing gland mechanism is by gimbal (5), outer shroud (7) and interior ring (9) are formed, its center is discharge gate (14), by gimbal (5), the meshing gap of the concavo-convex end face that outer shroud (7) and interior ring (9) are formed and the convex-concave shape end face of grading wheel end (8) constitutes gap, labyrinth (12), be air chamber (4) between gimbal (5) and the outer shroud (7), and the annular space winding-up gap (10) that is communicated with gap, labyrinth (12) arranged, between outer shroud (7) and the interior ring (9) is air chamber (6), and the annular space winding-up gap (11) that is communicated with gap, labyrinth (12) is arranged.

3, as claimed in claim 1 or 2 vertical to gaseous blast crushing and classification machine, the annular space winding-up gap (10) that it is characterized in that air chamber (6) is greater than air chamber (4) annular space winding-up gap (11).

4, as claimed in claim 1 or 2 vertical to gaseous blast crushing and classification machine, the discharging opening (13) that it is characterized in that center, grading wheel end (8) is for horn-like, and its osculum is towards discharge neck (3).

5, as claimed in claim 1 or 2 vertical to gaseous blast crushing and classification machine, it is characterized in that the joint that connects source of the gas is all arranged on air chamber (4), (6).