CN2088454U

CN2088454U - Double layer partition plate

Info

Publication number: CN2088454U
Application number: CN 91203286
Authority: CN
Inventors: 顾国威; 徐景茂; 温祖炎; 王盛
Original assignee: ANHUI CONSTRUCTION MATERIAL SC
Current assignee: ANHUI CONSTRUCTION MATERIAL SC
Priority date: 1991-03-04
Filing date: 1991-03-04
Publication date: 1991-11-13

Abstract

The utility model relates to a double-layer partition plate, belonging to the partition plate device of milling machines, and is suitable for installing in the ordinary tube grinder to use as an isolated ball and sieve thick and thin material. The utility model changes the nonporous blind plate of the present double layer partition plate into porous grid plate, and changes the stationary type separating screen into plug-in type separating screen.

Description

Double layer partition plate

The utility model relates to a kind of grinding machine partition panel device, and specifically a kind of double-layered isolating plate is suitable for being installed in and makes the usefulness that batching sphere is forged, sieved the thickness material in the common tube mill.

As everyone knows, what use in the common ball mill is the individual layer partition panel that does not have screening mechanism, and the abrasive body in last storehouse is greater than the abrasive body in one storehouse, back.Therefore, when the material in last storehouse is arrived certain fineness by grinding in the grinding machine, can not in time thinner material screening be come out to be discharged to next storehouse, cause the grinding phenomenon easily; On the contrary, the raw meal particle size that enters next storehouse is excessive, and is incompatible with the abrasive body of being joined, and often produces not foot phenomenon of grinding.China discloses the patent of invention of a kind of " using the tube mill of many rib sieves " (application number is 8910726.5) by name on " Gazette of Patent for Invention " September nineteen ninety 26.Disclosed a kind of double-layered isolating plate in this patent, it mainly is that the many rib sieves that are provided with lifting blade on rib are installed between grate plate (charging grate plate) and blind plate (discharging wallboard), discharging awl and forming, batching sphere is forged though this double-layered isolating plate has, the function of screening thickness material, and there are 2 deficiencies inevitably in its structure.The one, what the discharging wallboard adopted is blind plate, and according to this patent specification introduction and accompanying drawing 5 signals, described blind plate just just has been provided with the radial comb hole of ventilation and discharging effect between discharging awl and many ribs sieve.The discharging wallboard (blind plate) of this structure can cause in the mill strong by near the central ventilation ability partition panel inevitably, form the wind post, the periphery deficiency in draught, form the dead angle, produce eddy current, and air quantity is big more, wind post, eddy current are strong more, make mill output fluctuation big, product fineness is difficult to control, and this phenomenon is particularly outstanding on the minor diameter mill below the relatively poor φ 1.5m of process conditions.In addition, the minor diameter mill uses this double-layered isolating plate, and the mill inner ventilation resistance is big, and ventilation is obviously not enough, and especially the little mill of natural exhaust is more obvious.The 2nd, many rib sieves and lifting blade are welded into integral body, are not easy to change the choice sieve plate according to the product fineness requirement.

The purpose of this utility model is that a kind of little mill that both had been applicable to that φ 1.5m was following will be provided, be applicable to the modified double-layered isolating plate of the big mill that φ 1.83m is above again, be intended to increase the available ventilation area of existing double-layered isolating plate, reduce to grind internal resistance, improve the section Uniform Ventilation, accept or reject sieve plate for the user changes according to product fineness, provide convenience.

The purpose of this utility model is achieved in that on existing double-layered isolating plate has done 2 improvement, the one, with discharging wallboard 7 by the blind plate of atresia around beyond atresia or the bolter make into from the center to around be provided with the grate plate in comb hole; The 2nd, lifting blade 11 and discharging awl 3 are welded into an overall structure, and respectively establish a guide groove that can insert sieve plate 12 in corresponding position, lifting blade 11 two sides, sieve plate 12 forms an inverted tubaeform bolter after inserting guide grooves.

Owing to be provided with the discharging awl between the charging and discharging wallboard of double-layered isolating plate, so the discharging task of discharging wallboard mainly born by the comb hole between sieve plate and the discharging awl, and draught effect is mainly played in the comb hole around beyond the bolter.According to the not same-action in the center on the discharging wallboard 7 and the hole of combing all around, different apertures is adopted with comb hole all around in the utility model center on discharging wallboard 7.According to the product fineness requirement, the aperture, comb hole between bolter sieve plate 12 and the discharging awl is 10～20mm, and the aperture, comb hole beyond the bolter 12 is 3～6mm.

According to the not same-action in comb hole on the above-mentioned discharging wallboard 7, comb described in the utility model hole is adopted and is mixed arranged type, i.e. bigger comb hole adopts concentric circles to arrange between bolter sieve plate 12 and the discharging awl 3, is beneficial to further improve the discharging effect; Radial arrangement is adopted in comb hole less around beyond the bolter sieve plate 12, and it can be ventilated, and can stop preferably again to enter the thinner material in next storehouse and return.

The utility model is located at the angle of the guide groove that can insert sieve plate 12 on the lifting blade 11 and grinding machine axis and can generally be advisable with 10～40 degree according to being selected by the angle of repose size of grinding material.

The utility model has the advantages that: batching sphere is forged effectively, sieves the thickness material, and has increased the draught area of discharging wallboard, reduces flowing resistance, improves the uniformity that the grinding machine section ventilates; Applied widely, be applicable to closed circuit cement grinding mill, more be applicable to the following little mill of φ 1.5m that open circuit is produced; Adopted when both being suitable for producing new mill, also be suitable for the transformation of existing grinding machine.Simultaneously, it is few to the utlity model has investment for trnasforming urban land, and the bolter sieve plate is changed and accepted or rejected series of advantages such as convenient.Adopted grinding machine of the present utility model, the Increasing Production and Energy Saving effect is very remarkable.By the industrialness reforming test that carries out on φ 1.5 * 5.7m cement grinding mill, only at 5,000 yuan of transformation fundses, two day set-up time, average unit-hour output improves 20.29%(and goes out to grind cement fineness identical), ton cement power consumption decline 7KWH.

Description of drawings

Fig. 1 is the structural representation of a kind of specific embodiments of the utility model.Numbering 1-grinder cylinder body among the figure, 2-charging wallboard, 3-discharging awl, wind hole, 4-center, 5-discharge end flange circle, 6-feed end flange circle, 7-discharging wallboard, the 8-bolt, 9-rolls up circle, 10-nut, 12-sieve plate.

Fig. 2 is that the A of Fig. 1 is to view.Numbering 11-lifting blade among the figure.

Fig. 3 is that the B of Fig. 1 is to view.

Fig. 4 is the structural representation of charging wallboard 2 shown in Fig. 1.

Fig. 5 is the structural representation of discharging wallboard 7 shown in Fig. 1.

Fig. 6 is the stereogram of lifting blade 11 shown in Fig. 2.

Embodiment:

Present embodiment is for transforming the optimum implementation of φ 1.5 * 5.7m open circuit cement grinding mill.

With reference to Fig. 1 and 4, charging wallboard 2 adopts the ZGMn13 casting.Arranged in concentric circles is adopted in comb hole on the charging wallboard 2, and hole wide (aforesaid aperture, following identical) is 10mm, and pitch-row is 40mm.

Adopt the ZGMn13 casting with reference to Fig. 1 and 5 discharging wallboards 7.Reducing mixing arranged type is adopted in comb hole on the discharging wallboard 7, and radial arrangement, Kong Kuanwei 5mm are adopted in the hole of promptly combing all around beyond the bolter sieve plate 12; Comb hole between bolter sieve plate 12 and the discharging awl 3 adopts concentric circles to distribute, and wide near two cylindrical void holes of sieve plate 12 is 10mm, all the other Kong Kuanwei 20mm.

Be equipped with the bolt hole of 2 φ 26mm with reference to corresponding position on Figure 4 and 5 charging wallboard 2 and the discharging wallboard 7.

Adopt the thick A of 10mm with reference to Fig. 1 discharging awl 3 ₃Steel plate is rolled into, and its cone angle is 46 degree.

With reference to Fig. 2 and 6, lifting blade 11 adopts 270mm wide, the thick A of 10mm ₃Steel plate is hot pressed into involute shape, and inside and outside its involute arc the corresponding position with 4mm thick A ₃Steel plate welding one can be plugged in the guide groove of sieve plate 12, and guide groove becomes 15 degree angles with its vertical line.

With reference to Fig. 1, bolter sieve plate 12 adopts the thick A of 4mm ₃Steel plate strikes out the parallel four limit row of radian, and sieve aperture is washed into long 2.5-5.0mm, the strip hole of wide 1-2mm.

With reference to Fig. 1, other part all adopts A shown in the figure ₃Steel is made according to a conventional method.

After all parts are made, all take to weld, assemble by assembly method shown in Figure 1 in the mill to form double-layered isolating plate described in the utility model.

Claims

1, a kind of double-layered isolating plate mainly is made up of charging wallboard 2, discharging wallboard 7, discharging awl 3, bolter sieve plate 12, lifting blade 11, it is characterized in that:

A, discharging wallboard 7 from the center to around be provided with the comb hole,

B, lifting blade 11 and discharging awl 3 are overall structure, and a guide groove that can insert sieve plate 12 is respectively established in corresponding position, lifting blade 11 two sides.

2, double-layered isolating plate as claimed in claim 1 is characterized in that different apertures is adopted in the comb hole on the discharging wallboard 7, i.e. aperture, comb hole between bolter sieve plate 12 and the discharging awl 3 is 10～20mm, and the aperture, comb hole beyond the bolter sieve plate 12 is 3～6mm.

3, double-layered isolating plate as claimed in claim 1 is characterized in that the mixing arranged type is adopted in the comb hole on the discharging wallboard 7, i.e. comb hole between bolter sieve plate 12 and the discharging awl 3 adopts concentric circles to arrange, the comb hole employing radial arrangement beyond the bolter sieve plate 12.

4, as claim 1,2 or 3 described double-layered isolating plates, the angle that it is characterized in that guide groove set on the lifting blade 11 and grinding machine axis is 10～40 degree.