CN200957408Y

CN200957408Y - Spiral screen

Info

Publication number: CN200957408Y
Application number: CN 200620077880
Authority: CN
Inventors: 孙建伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-25
Filing date: 2006-09-25
Publication date: 2007-10-10
Anticipated expiration: 2016-09-25

Abstract

The utility model relates to a spiral screen belonging to a sieving machine that can screen wet raw coal and stickum. The frame is arranged in ladder shape in movement direction of material. One machine set is arranged in each step of ladder. Front end axis bearing and back end axis bearing are arranged on the frame of each machine set. Paratactic screw axes in parallel with the movement direction of materials are arranged between the front end axis bearing the back end axis bearing. The screw axes are divided into two symmetrical groups, of which the screw thread direction is opposite to that of the other ground. The end of the screw axis is connected to the electric machine on the frame with driving belt. Longitudinal guide key and guide channel are arranged between the front end axis bearing and the frame. The guide key can move in the guide channel. The utility model can greatly increase the service life of spiral screen.

Description

Spiral screen

Technical field

The utility model relates to the screening machine of moist raw coal of a kind of efficient screening and viscous material.

Background technology

Under the high situation of modern mining mechanization degree, generally to carry out down-hole water spray dust, raw coal moisture content is increased, viscosity also increases thereupon, causes existing vibrating screen classifier can not adapt to this situation.Although CN88217122.4 and ZL93236466.7 patent have been done improvement to above-mentioned vibrating screen classifier, but in use still there are some problems: the standard rolling bearing of selecting for use in the helical axis front aperture of spiral screen, because its external diameter under the situation that guarantees bearing capacity is bigger, cause its aperture bigger, make that the core diameter of thread size of helical axis front end is bigger than normal, the spacing of adjacent two helical axis between the core diameter of thread at this place is too little after forming compass screen surface, in the process of screening coal, ironware is often rolled at this place, gangue and batten, produce the deadlock phenomenon, and produce very big impulsive force, part in badly damaged helical axis front aperture inner bearing and the transmission case; Helical axis front end shaft stool causes about shaft stool the location time error bigger because the helical axis lengthwise dimension can't accurately be controlled, and causes before gear, bearing and the helical axis in the transmission case end bearing unusual stressed and damage; Motor seat board is fixed, adjusts the tensioning trouble, and when rolling ironware, the gear in the transmission case need bear bigger impulsive force, so the formation abrasion of gear is big, causes the lost of life; Another is in the middle pulley cover of former two sections units, easily enter coal dust and can't get rid of, thereby cause the V-belt in gathering the pulley cover of coal dust, to be moved, bring the pulverized coal particle extruding in the pulley groove, the V-belt of wearing and tearing into by the V-belt, have a strong impact on the normal operation of equipment, and the belt housing mounting or dismounting are also very difficult.

Summary of the invention

The purpose of this utility model is to improve respectively at above-mentioned existing problem, thereby a kind of spiral screen of structurally more reasonable, more reliable performance is provided.

The technical scheme that provides according to the utility model: frame is along the stepped setting of the direction of motion of material, a unit is installed on each grade ladder, front end shaft stool and rear end shaft stool are installed on the frame of each unit, the helical axis parallel with the material movement direction is installed between front end shaft stool and rear end shaft stool, helical axis has arranged side by side mutually many, and many helical axis are divided into two groups symmetrically, wherein one group hand of spiral is opposite with the hand of spiral of another group, motor on the end of helical axis utilizes driving-belt and is installed on frame is connected, it is characterized in that: vertical lead key and guide groove are set between front end shaft stool and frame, and lead key is movably located in the guide groove.

Motor seat board is installed on frame, and motor mounting is on motor seat board, and an end of this motor seat board is articulated on the frame, between the other end and frame flexible member is set.

Corresponding to the hinged depression bar in the position that flexible member is set, the other end of depression bar passes the hole that is arranged on the frame on dynamo-electric seat board, and in this end catch is set, sleeve spring on the depression bar between this catch and frame.On the front end shaft stool, minor axis is installed, is utilized bearing to be connected with helical axis at the other end of minor axis.

Bearing is nonstandard rolling bearing, and the external diameter of this nonstandard rolling bearing is less than the standard rolling bearing of same specification.On the frame corresponding to driving-belt case is set, driving-belt is positioned at case, and the lower bottom part of the case between adjacent two units is a unenclosed construction.

The utility model changes the bearing in the helical axis front aperture of former spiral screen into nonstandard rolling bearing by the standard rolling bearing, increase bearing roller length, dwindle roller outer diameter, thereby reach under the situation that both satisfies bearing load carrying capacity, its external diameter is diminished, and the internal diameter of helical axis front end dress bearing dwindles, thereby the end of realizing this place's helical axis directly diminishes, the spacing of forming between adjacent two helical axis core diameters of thread of compass screen surface becomes big, unimpeded purpose when reaching material by this place; Helical axis front end shaft stool is not high by positioning accuracy, error changes vertical lead key greatly into and accurately locatees, and just the key of fixing on shaft stool bottom keyway and the frame positions, and makes unusual stressed elimination on each stress point; Motor seat board changes the self gravitation automatically tensioning type structure of hinge type by motor into by stationary structure, adjusts the tensioning degree of V-belt, makes that the gear in the transmission case is avoided bigger impulsive force; Another changes the bottom of the pulley cover between two units and inner wall shell into open type, reduced pulverized coal particle gathering in pulley cover widely, thereby reduced the wearing and tearing between V-belt and the pulley groove, and the mounting or dismounting of pulley cover are very convenient.

The utility model beneficial effect compared with the prior art:

1. change nonstandard rolling bearing in the helical axis front aperture of spiral screen, make the aperture of helical axis front end dress bearing dwindle, thereby make the core diameter of thread of helical axis front end compare bigger reducing with original dress standard rolling bearing, make the core diameter of thread of whole helical axis comparatively connect, spacing behind the composition compass screen surface between adjacent two helical axis core diameters of thread becomes big, avoided that adjacent two helical axis front ends roll ironware in the process of screening coal, gangue and batten and the deadlock phenomenon that often produces, realized the unimpeded of coal stream on the compass screen surface, reduced the gear on each fulcrum on the helical axis, the impact of bearing, and the very big maintenance that brings thus, guarantee the normal operation of equipment, greatly improved the service efficiency of equipment.

2. helical axis front end shaft stool is not accurately located by having accurately to locate to change into vertical lead key, promptly position with key fixing on shaft stool bottom elongated slot and the frame, make shaft stool left and right sides position error greatly reduce, accuracy can be controlled in the 0.2mm, guarantee the assembling perpendicularity of every helical axis and transmission case, eliminate stressed unusually on each stress point, improved the service life of end bearing before transmission case inner bearing, gear and the helical axis.

3. motor seat board links to each other with the frame hinge; so motor is on-stream by self gravitation; automatically adjust the V-belt; when compass screen surface is run over and kill by things such as ironwares; motor V-belt self-relaxation, skid; reduced impact, protected transmission case better, and it is also very convenient to change the V-belt in normal the use the gear in the transmission case, bearing.

4. in the middle of former two sections units is totally-enclosed pulley cover, after this cover removes downside and inner wall shell and changes open type into, reduced coal dust gathering in pulley cover widely, thereby the wearing and tearing of V-belt and pulley groove have been reduced, prolong the service life of V-belt, also made things convenient for the mounting or dismounting of pulley cover.

Description of drawings

Fig. 1 is three sections Spiral classfier front elevational schematic.

Fig. 2 is three sections Spiral classfier schematic top plan view.

Fig. 3 is three sections Spiral classfier schematic side view.

Fig. 4 is the B-B view of Fig. 2.

Fig. 5 is that the C of Fig. 4 is to view.

Fig. 6 is the partial enlarged drawing of D among Fig. 3.

Fig. 7 is the A-A view of Fig. 1.

The specific embodiment

As shown in the figure: frame 11 is along the stepped setting of the direction of motion of material, a unit is installed on each grade ladder, front end shaft stool 6 and rear end shaft stool are installed on the frame 11 of each unit, the helical axis 4 parallel with the material movement direction is installed between front end shaft stool 6 and rear end shaft stool, helical axis 4 has arranged side by side mutually many, and many helical axis 4 are divided into two groups symmetrically, wherein one group hand of spiral is opposite with the hand of spiral of another group, motor 9 on the end of helical axis 4 utilizes driving-belt and is installed on frame 11 is connected, at front

end shaft stool

6 and 11 of frames vertical lead key 15 and guide groove are set, lead key 15 is movably located in the guide groove, see Fig. 4,5, make the left and right sides position error when assembling front end shaft stool 6 greatly reduce, accuracy can be controlled in the 0.2mm, guarantee the assembling perpendicularity of every helical axis 4 and transmission case, so just eliminate stressed unusually on each stress point, improved the transmission case internal gear, the service life of bearing and helical axis 4 front end inner bearings.

Motor seat board 12 is installed on frame 11, and motor 9 is installed on the motor seat board 12, and an end of this motor seat board 12 is articulated on the

frame

11, and 11 of the other end and frames are provided with flexible member.With reference to Fig. 3 and Fig. 6, during motor 9 runnings, under the effect of motor 9 self gravitations, motor seat board 12 just can and be contained in the tensioning degree that frame 11 and the spring 13 on the motor seat board 12 are adjusted the V-belt automatically by linkage, if when in the operation process of equipment, having external force to occur, lift in motor seat board 12 meetings automatically, the V-belt relaxes or skids, transmission case quits work, so just avoided the impact of external force to transmission case internal gear and bearing, in normal use, it is very convenient to change the V-belt simultaneously.

Corresponding to the hinged depression bar 30 in the position that flexible member is set, the other end of depression bar 30 passes the hole that is arranged on the frame 11, and in this end catch is set on dynamo-electric seat board 12, sleeve spring 13 on the depression bar 30 of 11 of this catch and frames.

Minor axis 5 is installed on front end shaft stool 6, is utilized bearing 1 to be connected with helical axis 4 at the other end of minor axis 5.Bearing 1 is nonstandard rolling bearing, and the external diameter of this nonstandard rolling bearing is less than the standard rolling bearing of same specification.

On frame 11, case 18 is set corresponding to driving-belt, driving-belt is positioned at case 18, the lower bottom part of the case 18 between adjacent two

units

16 and 17 is that unenclosed construction is seen Fig. 1,7, case 18 between two

units

16 and 17 has removed following 19 and inner 20 wall shell, change the closed open type that is, such improvement has significantly reduced coal dust gathering in case 18, thereby the wearing and tearing between V-belt and the pulley groove are greatly reduced, improved the service life of V-belt, also brought great convenience simultaneously for the loading and unloading of pulley cover 18.

With reference to Fig. 2 and Fig. 4, nonstandard rolling bearing 1 that the utility model is related and interior sealing 2 are contained in the front aperture of helical axis 4 and on the minor axis 5, and minor axis 5 and external seal 8 are contained on the shaft stool 6, lubricating oil enters grease chamber 7 by the aperture in the minor axis 5, and the lubricating oil in the grease chamber 7 is lubricated nonstandard rolling bearing 1 by the passage of grease chamber 7.

Claims

1, a kind of spiral screen, frame (11) is along the stepped setting of the direction of motion of material, a unit is installed on each grade ladder, frame (11) at each unit goes up installation front end shaft stool (6) and rear end shaft stool, the helical axis (4) parallel with the material movement direction is installed between front end shaft stool (6) and rear end shaft stool, helical axis (4) has arranged side by side mutually many, and many helical axis (4) are divided into two groups symmetrically, wherein one group hand of spiral is opposite with the hand of spiral of another group, motor (9) on the end of helical axis (4) utilizes driving-belt and is installed on frame (11) is connected, it is characterized in that: between front end shaft stool (6) and frame (11) vertical lead key (15) and guide groove are set, lead key (15) is movably located in the guide groove.

2, spiral screen as claimed in claim 1, it is characterized in that: go up in frame (11) motor seat board (12) is installed, motor (9) is installed on the motor seat board (12), and an end of this motor seat board (12) is articulated on the frame (11), and the other end and frame are provided with flexible member between (11).

3, spiral screen as claimed in claim 2, it is characterized in that: go up corresponding to the hinged depression bar in the position that flexible member is set (30) at dynamo-electric seat board (12), the other end of depression bar (30) passes the hole that is arranged on the frame (11), and catch being set in this end, the depression bar (30) between this catch and frame (11) is gone up sleeve spring (13).

4, spiral screen as claimed in claim 1 is characterized in that: at front end shaft stool (6) minor axis (5) go up to be installed, to be utilized bearing (1) to be connected with helical axis (4) at the other end of minor axis (5).

5, spiral screen as claimed in claim 1 is characterized in that: bearing (1) is nonstandard rolling bearing, and the external diameter of this nonstandard rolling bearing is less than the standard rolling bearing of same specification.

6, spiral screen as claimed in claim 1, it is characterized in that: on frame (11), case (18) is set corresponding to driving-belt, driving-belt is positioned at case (18), and the lower bottom part of the case (18) between adjacent two units (16) and (17) is a unenclosed construction.