Improved crushing and grading machine

Abstract

The utility model provides an improved smashing grader which comprises a first motor, a machine head, a grading chamber, a grading wheel, a material returning pipe, a material discharging pipe and a mixing conveying pipe, the machine head is arranged at the top of the grading chamber, the first motor is arranged at the top of the machine head, and an output shaft of the first motor is arranged downwards. The grading wheel is horizontally arranged at the end of an output shaft of the first motor through a coupler, the discharging pipe is horizontally connected to one side of the machine head, the material returning pipe is connected to the bottom end of the grading chamber, the mixing conveying pipe penetrates through the grading chamber, the end of the mixing conveying pipe is located under the grading wheel, and a disperser is horizontally arranged at the position, below the grading wheel, of the end of the mixing conveying pipe. A plurality of through holes are formed in the circumferential direction of the disperser at intervals, and a material stirring mechanism is arranged on the material returning pipe; the grading machine is reasonable and simple in structural design, the concentration of powder entering the grading chamber can be dispersed, the powder grading precision is improved, and blockage during feeding back of unqualified powder particles is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of micro powder grinder, concretely relates to an improved type of grinding and grading machine. BACKGROUND

[0002] For the material after grinding, especially the ultrafine grinding, the powder below several microns in the mixed material is separated. There are many methods for the classification of superfine powder, including wet classification and dry classification. For dry separation, the cyclone separation method is usually used for the relatively coarse particles. The method is that the powder moves under the action of the induced air force. When the powder enters the cyclone separator, the relatively coarse powder falls into the collection barrel below the cyclone separator under the action of the gravity and the downward rotation force, and then enters the grinder for secondary grinding. The relatively fine material goes out from the air outlet above the cyclone separator and enters the dust collector to realize the gas-solid separation. However, the existing classification device cannot disperse the powder entering the classification chamber, so the concentration is too high, the classification is not fine enough, and the relatively coarse particles can easily cause the blockage of the pipeline.

[0003] In view of this, the utility model provides a classification machine which can disperse the concentration of the powder entering the classification chamber, improve the classification accuracy of the powder and avoid the blockage of the unqualified powder particles. The classification machine has a reasonable and simple structure and low cost. SUMMARY

[0004] The utility model provides an improved type of grinding and grading machine which has a reasonable and simple structure, can disperse the concentration of the powder entering the classification chamber, improves the classification accuracy of the powder and avoids the blockage of the unqualified powder particles. The specific scheme is as follows:

[0005] An improved type of grinding and grading machine, including first motor, machine head, classification chamber, grading wheel, back material pipe, discharge pipe and mixed conveying pipe, the machine head sets at classification chamber top, first motor sets at machine head top and its output shaft sets downward, the grading wheel passes through the shaft coupling and sets horizontally at first motor output shaft end, the discharge pipe connects horizontally on machine head one side, the back material pipe connects on classification chamber bottom end, the mixed conveying pipe penetrates classification chamber middle part and its end is located just below the grading wheel, the mixed conveying pipe end below the grading wheel is horizontally equipped with a disperser, the disperser is equipped with a plurality of through holes which are spaced apart in the circumferential direction, and a material stirring mechanism is arranged on the back material pipe.

[0006] Further, the material stirring mechanism includes a second motor, a rotating shaft and a plurality of material stirring pieces. The second motor is detachably arranged on one side of the back material pipe. The rotating shaft is connected to the output shaft of the second motor through a shaft coupling and penetrates the side wall of the back material pipe and is horizontally connected between the two side walls of the back material pipe. The plurality of material stirring pieces are evenly and spacedly arranged on the rotating shaft in the axial direction.

[0007] Further, the stirring piece is a herringbone structure with high middle and low sides.

[0008] Further, the disperser is a conical structure, and the plurality of through holes are uniformly and spacedly arranged on the side surface of the conical structure in the axial direction.

[0009] Further, the lower end of the classification chamber is a reverse conical structure.

[0010] The beneficial effects of the present application are as follows:

[0011] 1. The improved type of crushing and classifying machine, through the disperser horizontally arranged on the top of the mixed conveying pipe below the classification wheel and the plurality of through holes arranged in the circumferential direction thereof, when the powder material is conveyed to the classification chamber through the mixed conveying pipe, the powder material is sprayed out through the plurality of through holes by the action of the negative pressure wind, so that the dispersion of the powder material is realized, the concentration of the powder entering the classification chamber is reduced, and the powder classification precision is improved.

[0012] 2. The improved type of crushing and classifying machine, through the stirring mechanism arranged on the return pipe, when the unqualified powder particles fall downward to the return pipe by the gravity, the rotation of the second motor can drive the rotation of the rotating shaft, so that the plurality of stirring pieces arranged on the rotating shaft are rotated, and the powder particle material is stirred downward by the structure characteristics of the stirring piece with high middle and low sides, so that the emergence of the powder particle material blocking the pipeline is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a formal sectional view of the present application.

[0014] Fig. 2 is a schematic view of the classification chamber of the present application.

[0015] Fig. 3 is a schematic view of the stirring mechanism of the present application.

[0016] Reference signs: first motor 1, machine head 2, classification chamber 3, classification wheel 4, return pipe 5, discharge pipe 6, mixed conveying pipe 7, disperser 8, through hole 9, stirring mechanism 10, second motor 101, rotating shaft 102, stirring piece 103. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0018] Reference Figs. 1-3The utility model provides a kind of improved type comminuting classifier, including first motor 1, machine head 2, classification chamber 3, classification wheel 4, back material pipe 5, discharge pipe 6 and mixed conveying pipe 7, machine head 2 is arranged at the top of classification chamber 3, first motor 1 is arranged at the top of machine head 2 and its output shaft is arranged downward, classification wheel 4 is horizontally arranged at the end of first motor 1 output shaft by coupling, classification wheel 4 is evenly spaced and set with several classification pieces around, discharge pipe 6 is horizontally connected on one side of machine head 2, back material pipe 5 is connected on the bottom end of classification chamber 3, mixed conveying pipe 7 penetrates the middle part of classification chamber 3 and its end is located just below classification wheel 4, the end of mixed conveying pipe 7 below classification wheel 4 is horizontally equipped with a disperser 8, disperser 8 is spaced and provided with several through holes 9 around, several through holes 9 are horizontally arranged, when powder material is conveyed to disperser 8 by mixed conveying pipe 7, powder material is dispersed by the action of negative pressure wind and is ejected outward along several through holes, reduce the concentration of powder into classification chamber, to improve the classification accuracy of powder, back material pipe 5 is equipped with a material stirring mechanism 10, material stirring mechanism 10 is located on the bottom end of classification chamber 3 back material pipe 5.

[0019] Preferably, the material stirring mechanism 10 includes a second motor 101, a rotating shaft 102, and a plurality of stirring pieces 103. The second motor 101 is detachably arranged on one side of the back material pipe 5. The rotating shaft 102 is connected to the output shaft of the second motor 101 by a coupling and penetrates through the side wall of the back material pipe 5 and is horizontally connected between the two side walls of the back material pipe 5. The plurality of stirring pieces 103 are evenly spaced on the rotating shaft 102 in the axial direction. The diameter of the movement track of the plurality of stirring pieces 103 is smaller than the inner diameter of the back material pipe 5. The second motor 101 drives the rotation of the plurality of stirring pieces 103 by the continuous rotation of the output shaft, thereby stirring the powder and particle materials and making them fall downward to avoid blocking the pipeline.

[0020] Preferably, the stirring piece 103 has a herringbone structure with a higher middle part and lower two sides. The structure can better stir the powder and particle materials.

[0021] Preferably, the disperser 8 has a conical structure in cross section, so that the powder and particle materials can slide downward through the conical surface of the disperser 8 to avoid staying on it. The plurality of through holes 9 are evenly spaced on the axial direction of the side surface of the conical structure.

[0022] Preferably, the lower end of the classification chamber 3 has an inverted conical structure.

[0023] The utility model working principle: first, when starting negative pressure fan through the mill area with material is smashed into powder after it is through the mixed delivery pipe 7 and is transported to the grading chamber 3, and the powder material is ejected through the action of negative pressure wind force through several through -hole 9, by this means realizes the dispersion of powder material, reduces the concentration of powder into grading chamber, simultaneously starts the first motor 1 and drives the grading wheel 4 rotation, through the rotation of grading wheel 4 can be with the qualified powder material from the discharge pipe 6 to the next device, unqualified powder particle drops down through its self weight finally from the return pipe 5 and enters the smashing area again, in the process of unqualified powder particle into return pipe 5, through the rotation of second motor 101 can drive the shaft 102 rotation connected with it, thereby drives several material shifting piece 103 rotation, through the structure characteristics of material shifting piece 103 middle high both sides low can realize the powder particle material stirring and dropping down, thereby avoided the powder particle material block pipe situation.

[0024] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the specification as such. All the patents, publications and references cited herein are fully incorporated by reference in their entirety.

[0025] Furthermore, it is to be understood that the description of the present application is merely exemplary and that many changes can be made to the application without departing from its spirit. Accordingly, the scope of the application is not intended to be limited to the specific embodiments described herein, but rather only by the claims which follow.

Claims

1. An improved crushing and classifying machine, comprising a first motor (1), a machine head (2), a classification chamber (3), a classification wheel (4), a return pipe (5), a discharge pipe (6) and a mixing and conveying pipe (7), wherein the machine head (2) is arranged at the top of the classification chamber (3), the first motor (1) is arranged at the top of the machine head (2) and its output shaft is arranged downward, the classification wheel (4) is horizontally arranged at the end of the output shaft of the first motor (1) through a coupling, the discharge pipe (6) is horizontally connected to one side of the machine head (2), the return pipe (5) is connected to the bottom end of the classification chamber (3), and the mixing and conveying pipe (7) passes through the middle of the classification chamber (3) and its end is located directly below the classification wheel (4), characterized in that: The end of the mixing conveying pipe (7) below the grading wheel (4) is horizontally provided with a disperser (8), a plurality of through holes (9) are circumferentially spaced apart on the disperser (8), and a material pushing mechanism (10) is arranged on the return pipe (5).

2. The improved pulverizing classifier according to claim 1, characterized in that: The material pushing mechanism (10) comprises a second motor (101), a rotating shaft (102) and a plurality of material pushing pieces (103), the second motor (101) is detachably arranged on one side of the return pipe (5), the rotating shaft (102) is connected to the output shaft of the second motor (101) through a shaft coupling, penetrates through the side wall of the return pipe (5) and is horizontally connected between the two side walls of the return pipe (5), and the plurality of material pushing pieces (103) are uniformly and spaced apart arranged on the rotating shaft (102) in the axial direction.

3. An improved pulverizing classifier as claimed in claim 2, wherein: The material pushing piece (103) is a herringbone structure with high middle and low sides.

4. The improved pulverizing classifier as claimed in claim 1, wherein: The disperser (8) is a conical structure in cross section, and the plurality of through holes (9) are uniformly and spaced apart arranged on the side of the conical structure in the axial direction.

5. The improved pulverizing classifier as claimed in claim 1, wherein: The lower end of the grading chamber (3) is a reverse conical structure.

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