阅读说明：本技术 一种出料粒度可调的固体物料研磨方法及装置 (Solid material grinding method and device with adjustable discharging particle size ) 是由 姜英 罗陨飞 邵徇 尹炜迪 于 2020-07-21 设计创作，主要内容包括：本发明公开了一种出料粒度可调的固体物料研磨方法及装置,其中装置包括研磨盘壳体；动、静研磨盘以同轴且研磨面对置的构造置于研磨盘壳体内的研磨盘腔中；动研磨盘由驱动机构驱使其在研磨盘壳体内转动来将动、静研磨盘之间的物料磨碎；动研磨盘还与顶推机构相连,由顶推机构通过推拉的方式调节动、静研磨盘之间的间距；顶部整流气吹、侧边整流气吹分别从动、静研磨盘的上方和侧方吹气,中心整流气吹朝静研磨盘的中心吹气。本发明其适用于固体矿物的粉碎过程,利用动、静研磨盘之间的间隙配合,避免研磨过程中金属碰撞,提高了能源利用效率；降低研磨过程中升温,保证矿物颗粒性质的稳定；通过准确控制研磨间隙,保证了产物粒度的准确性。(The invention discloses a solid material grinding method and a solid material grinding device with adjustable discharging granularity, wherein the device comprises a grinding disc shell; the movable grinding disc and the static grinding disc are arranged in a grinding disc cavity in the grinding disc shell in a coaxial structure with opposite grinding surfaces; the movable grinding disc is driven by a driving mechanism to rotate in the grinding disc shell so as to grind the materials between the movable grinding disc and the static grinding disc; the movable grinding disc is also connected with a pushing mechanism, and the pushing mechanism adjusts the distance between the movable grinding disc and the static grinding disc in a push-pull mode; the top rectification air-blowing and the side rectification air-blowing are respectively used for blowing air from the upper part and the side part of the static grinding disc, and the central rectification air-blowing blows air towards the center of the static grinding disc. The invention is suitable for the crushing process of solid minerals, and metal collision in the grinding process is avoided by utilizing the clearance fit between the movable grinding disc and the static grinding disc, so that the energy utilization efficiency is improved; the temperature rise in the grinding process is reduced, and the stability of the properties of the mineral particles is ensured; the accuracy of the product granularity is ensured by accurately controlling the grinding gap.)

1. The utility model provides a solid material grinder of ejection of compact granularity adjustable which characterized in that includes:

the grinding disc shell is provided with a feeding port, a discharging port, a top rectifying air-blowing device, a side rectifying air-blowing device and a central rectifying air-blowing device;

the movable grinding disc and the static grinding disc are arranged in a grinding disc cavity in the grinding disc shell in a coaxial and grinding surface opposite structure; the static grinding disc is fixed with the grinding disc shell, and the movable grinding disc is driven by a driving mechanism to rotate in the grinding disc shell so as to grind materials between the movable grinding disc and the static grinding disc; the movable grinding disc is also connected with a pushing mechanism, and the pushing mechanism adjusts the distance between the movable grinding disc and the static grinding disc in a push-pull mode;

the top rectification air blowing and the side rectification air blowing blow air from the upper part and the side part of the movable grinding disc and the static grinding disc respectively along the radial direction of the movable grinding disc and the static grinding disc, and the center rectification air blowing blows air towards the center of the static grinding disc along the axial direction of the movable grinding disc and the static grinding disc.

2. The solid material grinding device with adjustable discharge granularity according to claim 1, characterized in that the movable grinding disc and the static grinding disc have the same shape and structure; the movable grinding disc and the static grinding disc both take the grinding disc as a main body, the center of the grinding surface of the grinding disc is taken as a round point, and adjacent convex surfaces and concave surfaces are distributed on the grinding surface in a fan shape; the outer edge of the grinding surface of the grinding disc surrounding the convex surface and the concave surface is a grinding side edge; a grinding cavity is formed between the movable grinding disc and the static grinding disc, the concave surface is connected with the grinding cavity, and the side edge of the convex surface is communicated with the concave surface and the convex surface; the adjacent convex surfaces and the adjacent concave surfaces form a group, and 2-6 groups of concave-convex surfaces are arranged on the grinding surface of each grinding disc.

3. The apparatus for milling solid material with adjustable discharge particle size according to claim 1, wherein said driving mechanism comprises:

a housing;

the central shaft is arranged in the central shaft cavity of the shell, and one end of the central shaft is coaxially connected with the movable grinding disc;

the fixed bearings are sleeved on the central shaft and are uniformly distributed along the axial direction of the central shaft;

the chain wheel is sleeved at the other end of the central shaft and is arranged outside the shell;

and the transmission motor is in transmission connection with the chain wheel through a chain.

4. The apparatus of claim 3, wherein the pushing mechanism comprises:

a master cylinder having an axial direction parallel to an axial direction of the center shaft;

the bearing sleeve is connected with the fixed bearing;

and the connecting plate is respectively connected with the bearing sleeve and the end part of the piston rod in the main cylinder.

5. The apparatus of claim 4, wherein at least one stop bolt is disposed through the housing and abuts against the connecting plate, the stop bolt being axially parallel to the central axis.

6. The solid material grinding device with the adjustable discharge granularity according to claim 1, characterized in that the feeding port extends towards the center of the static grinding disc, and a feeding hopper is arranged on the feeding port; and the discharge port is provided with a collecting hopper.

7. The solid material grinding device with the adjustable discharging granularity as claimed in claim 6, wherein the opening of the feeding hopper is provided with a top cover which is controlled to open and close by an uncovering cylinder, the top cover is provided with cylinder top cover rectifying air blowing towards the feeding hopper, and the side of the feeding hopper, close to the top cover, is provided with cylinder side wall rectifying air blowing towards the feeding hopper.

8. The solid material grinding device with the adjustable discharge granularity as recited in claim 6, wherein the outlet of the collecting hopper is provided with a vibrating screen controlled by a vibrating motor to vibrate.

9. The solid material grinding device with the adjustable discharge granularity according to claim 6, characterized in that the collecting hopper is communicated with the feeding port through a material back-blowing pipe, and the collecting hopper is also provided with back-blowing air-blowing which can be communicated with an air blowing device.

10. The solid material grinding device with adjustable discharge granularity according to any one of claims 1 to 9, wherein the grinding method comprises the following steps:

the material is sent into the grinding disc shell, the material is in semi-fluidization through the interaction of central rectification air blowing, top rectification air blowing and side rectification air blowing, and semi-fluidization material particles are crushed through the relative motion of the dynamic grinding disc and the static grinding disc.

Technical Field

The invention relates to a grinding device, in particular to a method and a device for grinding solid materials with adjustable discharge granularity.

Background

In order to test the physical and chemical properties of solid minerals, a certain quantity of representative samples needs to be pulverized into finer granularity by technical means, so that the subsequent analysis and inspection are facilitated. The solid mineral at home and abroad is widely crushed by a gyratory crusher, a cone crusher, a jaw crusher and a collision crusher (including a rod mill, a ball mill and the like). The collision between metals exists in the common crushing equipment in the using process, so that the equipment generates heat, vibrates and generates noise, and the waste of input energy is caused; the higher temperature of the equipment can cause certain influence to the physicochemical characteristic of mineral particles after long-time powder preparation, and the accuracy of the test result is influenced. The granularity of the product of the conventional powder making equipment is not accurately controlled, and the granularity is often too coarse to meet the subsequent use requirement.

Disclosure of Invention

The invention aims to provide a solid material grinding method and a solid material grinding device with adjustable discharge granularity, which are suitable for the crushing process of solid minerals, and avoid metal collision in the grinding process by utilizing the clearance fit between a movable grinding disc and a static grinding disc, thereby improving the energy utilization efficiency; the temperature rise in the grinding process is reduced, and the stability of the properties of the mineral particles is ensured; the accuracy of the product granularity is ensured by accurately controlling the grinding gap.

In order to achieve the above purpose, the invention provides the following technical scheme:

a solid material grinding device with adjustable discharge granularity comprises:

the grinding disc shell is provided with a feeding port, a discharging port, a top rectifying air-blowing device, a side rectifying air-blowing device and a central rectifying air-blowing device;

the movable grinding disc and the static grinding disc are arranged in a grinding disc cavity in the grinding disc shell in a coaxial and grinding surface opposite structure; the static grinding disc is fixed with the grinding disc shell, and the movable grinding disc is driven by a driving mechanism to rotate in the grinding disc shell so as to grind materials between the movable grinding disc and the static grinding disc; the movable grinding disc is also connected with a pushing mechanism, and the pushing mechanism adjusts the distance between the movable grinding disc and the static grinding disc in a push-pull mode;

the top rectification air blowing and the side rectification air blowing blow air from the upper part and the side part of the movable grinding disc and the static grinding disc respectively along the radial direction of the movable grinding disc and the static grinding disc, and the center rectification air blowing blows air towards the center of the static grinding disc along the axial direction of the movable grinding disc and the static grinding disc.

Preferably, the movable grinding disc and the static grinding disc are the same in shape and structure, both the movable grinding disc and the static grinding disc take the grinding disc as a main body, the center of a grinding surface of the grinding disc is taken as a circular point, and adjacent convex surfaces and concave surfaces are distributed on the grinding surface in a fan shape; the outer edge of the grinding surface of the grinding disc surrounding the convex surface and the concave surface is a grinding side edge; a grinding cavity is formed between the movable grinding disc and the static grinding disc, the concave surface is connected with the grinding cavity, and the side edge of the convex surface is communicated with the concave surface and the convex surface.

Preferably, the adjacent convex surface and concave surface form a group, and 2-6 groups of concave-convex surfaces are arranged on the grinding surface of each grinding disc.

Preferably, the convex side edge is inclined at a certain angle, and the inclined convex side edge has a certain width.

Preferably, the drive mechanism includes:

a housing;

the central shaft is arranged in the central shaft cavity of the shell, and one end of the central shaft is coaxially connected with the movable grinding disc;

the fixed bearings are sleeved on the central shaft and are uniformly distributed along the axial direction of the central shaft;

the chain wheel is sleeved at the other end of the central shaft and is arranged outside the shell;

and the transmission motor is in transmission connection with the chain wheel through a chain.

Preferably, the end of the central shaft, the central shaft mounting seat, the movable grinding disc mounting seat and the movable grinding disc are coaxially connected in sequence.

Preferably, the ejector mechanism comprises:

a master cylinder having an axial direction parallel to an axial direction of the center shaft;

the bearing sleeve is connected with the fixed bearing;

and the connecting plate is respectively connected with the bearing sleeve and the end part of the piston rod in the main cylinder.

Preferably, at least one limit bolt passes through the shell and abuts against the connecting plate, and the axial direction of the limit bolt is parallel to the axial direction of the central shaft.

Preferably, the feeding port extends towards the center of the static grinding disc, and a feeding hopper is arranged on the feeding port; and the discharge port is provided with a collecting hopper.

Preferably, a top cover controlled to be opened and closed by a cover opening cylinder is arranged on the opening of the feeding hopper, cylinder top cover rectification air blowing towards the feeding hopper is arranged on the top cover, and cylinder side wall rectification air blowing towards the feeding hopper is arranged at the position, close to the top cover, of the side of the feeding hopper.

Preferably, a vibrating screen controlled by a vibrating motor is arranged at the outlet of the collecting hopper.

Preferably, the material collecting hopper is communicated with the material inlet through a material back-blowing pipe, and the material collecting hopper is further provided with back-blowing air blowing which can be communicated with an air blowing device.

The solid material grinding device with the adjustable discharge particle size comprises the following grinding methods:

the material is sent into the grinding disc shell, the material is in semi-fluidization through the interaction of central rectification air blowing, top rectification air blowing and side rectification air blowing, and semi-fluidization material particles are crushed through the relative motion of the dynamic grinding disc and the static grinding disc.

The solid material grinding method and the solid material grinding device with adjustable discharge granularity are suitable for the crushing process of solid minerals, and metal collision in the grinding process is avoided by utilizing the clearance fit between the movable grinding disc and the static grinding disc, so that the energy utilization efficiency is improved; the temperature rise in the grinding process is reduced, and the stability of the properties of the mineral particles is ensured; the accuracy of the product granularity is ensured by accurately controlling the grinding gap.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a cross-sectional view of a solid material grinding device with adjustable discharge particle size according to an embodiment of the present invention;

fig. 2 is a perspective view of a solid material grinding device with adjustable discharge particle size according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a solid material grinding device with adjustable discharge particle size according to a second embodiment of the present invention;

FIG. 4 is a perspective view of a solid material grinding device with adjustable discharge particle size according to a second embodiment of the present invention;

fig. 5 is a structural diagram of a movable grinding disk and a static grinding disk in the solid material grinding device with adjustable discharge granularity, which is provided by the first embodiment and the second embodiment of the invention.

Description of reference numerals:

1. a feeding port; 2. central rectification air blowing; 3. a static grinding disc; 4. a grinding disc cavity; 5. a movable grinding disc; 6. a movable grinding disc mounting seat; 7. a master cylinder; 8. a limit bolt; 9. a sprocket; 10. a connecting plate; 11. a central shaft cavity; 12. a central shaft; 13. fixing the bearing; 14. a limiting groove; 15. a central shaft mounting base; 16. a grinding disc cavity; 17. top rectification air blowing; 18. a bearing housing; 19. a housing; 20. vibrating screen; 21. a vibration motor; 22. a material back flushing pipe;

101. a drive motor; 102. a supporting seat; 103. a base; 104. side rectification air blowing; 105. a collection hopper; 106. rectifying and blowing air on the side wall of the cylinder; 107. feeding into a hopper; 108. rectifying and blowing air by a cylinder top cover; 109. opening a cover of the cylinder; 110. a vent hole; 111. a top cover; 112. back blowing;

201. a concave surface; 202. a convex surface; 203. grinding the cavity; 204. a convex side edge; 205. and grinding the side edges.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.