CN217473671U

CN217473671U - Stirrer for horizontal stirring mill

Info

Publication number: CN217473671U
Application number: CN202221199586.5U
Authority: CN
Inventors: 曹培泽; 闫阳; 郭志凯; 叶蕾; 连明洋; 付安琪
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-23
Anticipated expiration: 2032-05-19

Abstract

The utility model discloses a horizontal agitator for stirring mill has solved among the prior art problem that the grinding medium is easily piled up and grinding inefficiency of stirring mill. The utility model discloses a stirrer, which comprises a rotating shaft, wherein the rotating shaft is provided with a stirring impeller and an outlet impeller, and an outlet end spacer sleeve is arranged between the stirring impeller and the outlet impeller; the outlet impeller is positioned at the discharge end of the stirrer and is obliquely arranged on the rotating shaft; the stirring impeller comprises a two-piece impeller and/or a three-piece impeller and/or a similar circular impeller; and a spacer sleeve is arranged between every two adjacent stirring impellers. The utility model discloses an export impeller that the slope set up at the rotatory in-process of mill, can provide the power of grinding medium to the feed end motion, prevent that grinding medium from piling up at the discharge gate, guarantee grinding medium distribution uniformity. The multi-structure form of the stirring impeller is matched, and the stirring impeller is adaptive to different mill filling rates, so that the problem of low grinding efficiency of the existing stirrer can be effectively solved.

Description

Stirrer for horizontal stirring mill

Technical Field

The utility model relates to a stirring mill technical field especially indicates a horizontal stirring is agitator for mill.

Background

The stirring mill is widely applied to mine development, new material superfine grinding and the like, grinding of the material mainly depends on a stirrer to drive a grinding medium and the material to do multidimensional movement, and the grinding medium and the material are subjected to collision, extrusion and friction to grind the material, so that the grinding efficiency of the stirring mill is directly related to the structure of the stirrer, and the existing stirrer mainly has a disc type structure, a ring type structure and the like, so that the efficiency of transferring kinetic energy of the stirrer is low, and the grinding effect is poor. In the process of grinding the materials, due to the fact that the material level of the feeding hole is poor, the materials and the grinding media are pushed to move towards the discharging hole, the grinding media are accumulated at the outlet grid, the density of the grinding media in a working area is reduced, and the grinding efficiency is reduced.

In the prior art, for example, a stirring abrasive device with application number of CN 216025302U, all the materials and part of the grinding media are discharged from the mill, after passing through a separator, the qualified materials enter a finished product bin, and the unqualified materials and media balls return to the inside of the mill. This undoubtedly greatly reduces the grinding media inside the mill, reduces the density of the grinding media in the working area, reduces the number of times of collision of the grinding media, reduces the grinding efficiency, and also fails to solve the problem of accumulation of the grinding media.

SUMMERY OF THE UTILITY MODEL

Not enough to in the above-mentioned background art, the utility model provides a horizontal stirring is agitator for mill has solved among the prior art stirring mill grinding medium problem of easily piling up.

The technical scheme of the utility model is realized like this: a stirrer for a horizontal stirring mill comprises a rotating shaft, wherein a stirring impeller and an outlet impeller are arranged on the rotating shaft, and an outlet end spacer sleeve is arranged between the stirring impeller and the outlet impeller; the outlet impeller is positioned at the discharge end of the stirrer and is obliquely arranged on the rotating shaft; the stirring impeller comprises a two-piece impeller and/or a three-piece impeller and/or a similar circular impeller; and a spacer sleeve is arranged between two adjacent stirring impellers.

Furthermore, the outlet impeller comprises a shaft sleeve and blades, the blades are fixed on the outer circumference of the shaft sleeve at equal angles along the circumferential direction, and the shaft sleeve is connected with the rotating shaft through keys. The longitudinal section of each blade and the radial section of the shaft sleeve form a certain included angle.

Furthermore, the two-piece impeller comprises a first shaft ring sleeve and two first blades, the two first blades are arranged along the outer circumference of the first shaft ring sleeve at equal angles, and the first shaft ring sleeve is connected to the rotating shaft through a key. The phase difference between two adjacent two-piece impellers is 60 degrees when the two adjacent two-piece impellers are installed; the first blade is a strip fan-shaped blade.

Furthermore, the three-piece impeller comprises a second shaft ring sleeve and three second blades, the three second blades are arranged along the outer circumference of the second shaft ring sleeve at equal angles, and the second shaft ring sleeve is connected to the rotating shaft through a key. The phase difference of two adjacent three-piece impellers is 60 degrees when the impellers are installed; the second blade is a strip fan-shaped blade.

As another preferable mode, when at least one two-piece impeller and at least one three-piece impeller are arranged on the rotating shaft, the phase difference between two adjacent two-piece impellers and the three-piece impeller is 60 °.

Furthermore, class circular impeller includes third shaft ring cover and class circle blade, and class circle blade sets up with third shaft ring cover coaxial line, and third shaft ring cover is connected with the pivot through the key. The phase difference of two adjacent similar circular impellers is 60 degrees when the impellers are installed, the similar circular blades are of an integrated sheet structure formed by intersecting three circles, and through holes are formed in the similar circular blades.

The utility model discloses an export impeller that the slope set up at the rotatory in-process of mill, can provide the power of grinding medium to the feed end motion, prevents that the material from piling up at the discharge gate, guarantees grinding medium distribution uniformity. The stirring impeller is matched in multiple structural forms and is adaptive to different mill filling rates, so that the problem of low grinding efficiency of the existing stirrer can be effectively solved; the quasi-circular impeller reduces the quality of the disc, improves the discreteness of the structure in the space of the rotating direction, increases the collision force and improves the collision efficiency. The utility model discloses the holistic work efficiency of horizontal stirring mill has further been improved in the ingenious design of agitator, realizes grinding medium evenly distributed, has higher spreading value.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work.

Fig. 1 is a schematic view of the overall structure of the stirrer of the present invention.

Fig. 2 is a schematic structural view of the quasi-circular impeller of the present invention.

Fig. 3 is a schematic view showing the installation state of the quasi-circular impeller.

Fig. 4 is a schematic structural view of the three-piece impeller of the present invention.

Fig. 5 is a schematic view showing an installation state of the three-piece impeller.

Fig. 6 is a schematic structural view of the two-piece impeller of the present invention.

Fig. 7 is a schematic view showing an installation state of the two-piece impeller.

Fig. 8 is a schematic view of the structure of the outlet impeller of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1, embodiment 1 is a stirrer for a horizontal stirring mill, which includes a rotating shaft 1 for transmitting power and fixing parts such as an impeller. In the actual working process, the rotating shaft 1 is horizontally arranged in the shell of the horizontal stirring mill and is in rotating connection with the shell, and the rotating shaft rotates under the action of a driving device (a motor or a motor) of the horizontal stirring mill. Be equipped with impeller 2 and export impeller 4 on the pivot 1, be equipped with exit end spacer sleeve 5 between impeller 2 and the export impeller 4, exit end spacer sleeve 5 is fixed in the pivot through the key for confirm the interval of exit end impeller 4 and impeller 2. In this embodiment, the stirring impeller 2 and the outlet impeller 4 are fixed to the rotating shaft by a key and rotate synchronously with the rotating shaft. In the embodiment, the outlet impeller 4 is positioned at the discharge end of the stirrer and is obliquely arranged on the rotating shaft; specifically for export impeller 4 is located the agitator end and is close to the export grid, fixes to the key epaxial through the keyway, is used for providing kinetic energy for material and grinding medium firstly, secondly because the blade on the exit end impeller has certain inclination, at the rotatory in-process of mill, can provide the power that grinding medium moved to the feed end, prevents that grinding medium from piling up at the discharge gate, guarantees grinding medium distribution uniformity. The stirring impeller 2 comprises a two-piece impeller 21 and/or a three-piece impeller 22 and/or a circular-like impeller 23; a spacing sleeve 3 is arranged between two adjacent stirring impellers. The spacing sleeve 3 is fixed on the rotating shaft through a key and used for determining the distance between the two impellers.

In the concrete implementation process, when the mill filling rate is lower, choose for use coaxial two formula impellers or three formula impellers, its quality is lighter, and the nail of impeller plays the structure, is greater than the discoid impeller among the prior art far away to the impact capacity of grinding medium and material, effectively improves the collision energy, improves the grinding effect under low filling rate. When the mill filling rate is higher, choose for use quasi-circular impeller, quasi-circular is compared in the disc among the prior art, is multistage circular arc and sharp connection in its circumference, under with the diameter, has firstly reduced the disc quality, secondly improves the discreteness of this structure in the direction of rotation space, increases the collision dynamics, improves collision efficiency.

As shown in fig. 8, in embodiment 2, the outlet impeller 4 includes a shaft sleeve 401 and blades 402 based on embodiment 1, and the number of the blades may be set to 2 to 8 as required. The blades 402 are fixed on the outer circumference of the bushing 401 at equal angles in the circumferential direction, and the blades 402 and the bushing 401 are preferably fixed by welding. The sleeve 401 is connected to the shaft 1 by a key. In this embodiment, the longitudinal section of each blade and the radial section of the shaft sleeve form a certain included angle. Preferably, the included angle range of the grinding media is 5-20 degrees, and the grinding media can provide force for moving to the feeding end in the rotating process of the mill, so that the grinding media are prevented from being accumulated at the discharging port, and the distribution uniformity of the grinding media is ensured. The method specifically comprises the following steps: in the process of rotation of the mill, the grinding medium moves to the rear part of a grinding area of the mill due to the difference of material level, when the grinding medium contacts an outlet-end impeller, collision is generated, the impeller extrudes the grinding medium in a beveling mode due to the inclination angle of blades of the outlet-end impeller, work is axially applied to the grinding medium, and the grinding medium obtains the axial speed moving to a feeding end, so that the problem of accumulation of the grinding medium at the outlet end of the mill is solved, and on the other hand, the grinding medium is thrown and pushed to the feeding end, so that the density of the grinding medium in a working area is ensured, the collision probability of the grinding medium and the material is increased, and the grinding efficiency is further increased.

When the filling rate of the mill is low, the stirring impeller can be a two-piece impeller, and the number of the two-piece impellers can be set to be a plurality according to the requirement. As shown in fig. 6 and 7, the concrete structure is: the two-piece impeller 21 includes a first shaft collar 21-1 and two first blades 21-2, the two first blades 21-2 are disposed at equal angles along an outer circumference of the first shaft collar 21-1, and preferably the first blades 21-2 are welded to the first shaft collar 21-1. The first shaft ring sleeve 21-1 is connected to the rotating shaft 1 through a key, and synchronous rotation with the rotating shaft is realized. The phase difference between two adjacent two-piece impellers 21 is 60 degrees when the two adjacent two-piece impellers are installed, so that collision energy and crushing effect are improved; the first blades 21-2 are strip fan-shaped blades.

When the filling rate of the mill is low, the stirring impeller can also be a three-blade impeller, and the number of the three-blade impellers can be set to be a plurality according to the requirement. As shown in fig. 4 and 5, the three-piece impeller 22 includes a second collar 22-1 and three second blades 22-2, the three second blades 22-2 are disposed at equal angles along the outer circumference of the second collar 22-1, and the second collar 22-1 is connected to the rotating shaft 1 by a key to realize synchronous rotation with the rotating shaft. The phase difference of two adjacent three-piece impellers 22 is 60 degrees when the impellers are installed, so that the collision energy and the crushing effect are improved. The second blade 22-2 is a strip fan-shaped blade.

When the filling rate of the mill is low, the stirring impeller can also be a combination of two-piece impellers and three-piece impellers, the number of the stirring impellers can be set as required, namely, at least one two-piece impeller 21 and at least one three-piece impeller 22 are arranged on the rotating shaft 1, the phase difference between the two adjacent two-piece impellers 21 and the three-piece impeller 22 is 60 degrees, and the collision energy and the crushing effect are improved.

When the filling rate of the mill is high, the stirring impeller can be round-like impellers, and the number of the round-like impellers can be set to be multiple according to the requirement. As shown in fig. 2 and 3, the circular-like impeller 23 includes a third shaft ring sleeve 23-1 and a circular-like blade 23-2, the circular-like blade 23-2 and the third shaft ring sleeve 23-1 are coaxially disposed, and the third shaft ring sleeve 23-1 is connected with the rotating shaft 1 through a key, so as to realize synchronous rotation with the rotating shaft.

Specifically, the round-like blade 23-2 is an integrated sheet structure formed by intersecting three circles; namely, the similar-circle blade is a blade structure formed by intersecting the interiors of three circles and tangency between two adjacent circles through edge lines. The phase difference when two adjacent similar circular impellers 23 install is 60, and similar circular shape is compared in the disc among the prior art, is multistage circular arc and sharp connection in its circumference, under with the diameter, has firstly reduced the disc quality, secondly improves the discreteness of this structure in the direction of rotation space, increases the collision dynamics, improves collision efficiency. The round-like blade 23-2 is provided with a through hole 23-3. The through holes 23-3 can be circular through holes or special-shaped through holes, and the through holes are arranged on the basis of ensuring the contact area of the disc with the grinding medium and materials, so that the material passing performance is improved, and the grinding effect is improved under the condition of high filling rate. Therefore, the proper impeller designed above is selected according to the filling rate of the mill, namely the working condition, the problem of low grinding efficiency of the existing stirrer can be solved, and the grinding efficiency is further improved.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a horizontal agitator for stirring mill which characterized in that: the stirrer comprises a rotating shaft (1), wherein a stirring impeller (2) and an outlet impeller (4) are arranged on the rotating shaft (1), and the outlet impeller (4) is positioned at the discharge end of the stirrer and is obliquely arranged on the rotating shaft (1); an outlet end spacer sleeve (5) is arranged between the stirring impeller (2) and the outlet impeller (4); the stirring impeller (2) comprises a two-piece impeller (21) and/or a three-piece impeller (22) and/or a similar circular impeller (23); a spacer sleeve (3) is arranged between two adjacent stirring impellers.

2. The agitator of claim 1, wherein: the outlet impeller (4) comprises a shaft sleeve (401) and blades (402), wherein the blades (402) are fixed on the outer circumference of the shaft sleeve (401) at equal angles along the circumferential direction, and the shaft sleeve (401) is connected with the rotating shaft (1) through keys.

3. The agitator for a horizontal agitator mill according to claim 2, wherein: the longitudinal section of the blade and the radial section of the shaft sleeve form a certain included angle.

4. The stirrer for the horizontal stirring mill according to any one of claims 1 to 3, wherein: the two-piece impeller (21) comprises a first shaft ring sleeve (21-1) and two first blades (21-2), wherein the two first blades (21-2) are arranged at equal angles along the outer circumference of the first shaft ring sleeve (21-1), and the first shaft ring sleeve (21-1) is connected to the rotating shaft (1) through a key.

5. The agitator of claim 4, wherein: the phase difference of two adjacent two-piece impellers (21) is 60 degrees when the two impellers are installed; the first blade (21-2) is a strip fan-shaped blade.

6. The stirrer for the horizontal stirring mill according to any one of claims 1 to 3 and 5, wherein: the three-piece impeller (22) comprises a second shaft sleeve (22-1) and three second blades (22-2), the three second blades (22-2) are arranged at equal angles along the outer circumference of the second shaft sleeve (22-1), and the second shaft sleeve (22-1) is connected to the rotating shaft (1) through a key.

7. The agitator of claim 6, wherein: the phase difference of two adjacent three-piece impellers (22) is 60 degrees when the impellers are installed; the second blade (22-2) is a strip fan-shaped blade.

8. The agitator of claim 1, wherein: when the rotating shaft (1) is provided with at least one two-piece impeller (21) and at least one three-piece impeller (22), the phase difference between two adjacent two-piece impellers (21) and the three-piece impeller (22) is 60 degrees.

9. The agitator for a horizontal agitator mill according to claim 1, 7 or 8, wherein: the similar circular impeller (23) comprises a third shaft ring sleeve (23-1) and a similar circular blade (23-2), the similar circular blade (23-2) and the third shaft ring sleeve (23-1) are coaxially arranged, and the third shaft ring sleeve (23-1) is connected with the rotating shaft (1) through a key.

10. The agitator of claim 9, wherein: the phase difference of two adjacent similar circular impellers (23) is 60 degrees when the impellers are installed, the similar circular blades (23-2) are of an integrated sheet structure formed by intersecting three circles, and through holes (23-3) are formed in the similar circular blades (23-2).