Grading type micro powder pulverizer

Abstract

The utility model discloses a grading type micro powder grinder. Comprising a crushing cavity, a grading cavity buckled and clamped to the upper end of the crushing cavity, a spiral feeding mechanism communicating with the crushing cavity through an impurity removing mechanism, a collecting box connected to an impurity discharging opening of the impurity removing mechanism, and an atomizing nozzle arranged corresponding to a feeding opening of the spiral feeding mechanism and used for spraying out a surfactant. The rotary grinding disc is arranged in the smashing cavity and corresponds to a feeding port of the spiral feeding structure, the material blocking ring is arranged at the upper end of the grinding disc, separated from the grinding disc and fixed in the smashing cavity, and the grading wheel is arranged in the center of the material blocking ring and installed at an opening in the upper end of the smashing cavity. The air inlet is formed in the bottom of the crushing cavity. Heavy impurities in materials can be removed through the impurity removal mechanism; and the atomizing nozzle can uniformly and fully mix the material and the surfactant during feeding, so that the crushing efficiency and the crushing effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material crushing, in particular to a grading type micro powder crusher. Background Art

[0002] Non-metallic materials are involved in all aspects of life and industrial production, and are widely used in non-metallic mining, chemical industry, metallurgy, food, medicine, feed, coatings, plastics, rubber and other industries. Crushing of non-metallic materials is an important part of their processing and utilization.

[0003] The existing grinding of non-metallic materials usually uses dry grinding technology. For micro powder grinding, it usually includes grinding and air flow grinding. For grinding and grinding devices, the existing grinding and grinding does not have the function of material impurity removal. Impurity removal needs to be done separately before crushing. The addition of processes not only increases the equipment investment, but also reduces the overall production efficiency, which does not meet the production indicators of energy saving, low consumption and emission reduction; and the outer shell of the grinder is assembled by bolt sealing, which is not conducive to disassembly, cleaning and maintenance. It is also easy to cause agglomeration due to the moisture content of the material, which is not conducive to crushing. Summary of the invention

[0004] In view of this, the utility model provides a grading type micro powder pulverizer, which has the characteristics of good pulverizing effect, high efficiency and is easy to disassemble, clean and overhaul.

[0005] The utility model solves the above problems through the following technical means:

[0006] The utility model discloses a grading micro powder pulverizer, comprising a pulverizing chamber, a grading chamber which is buckled and connected to the upper end of the pulverizing chamber, a spiral feeding structure which is connected to the pulverizing chamber through a debris removing mechanism, a collecting box which is connected to the debris discharge port of the debris removing mechanism, an atomizing nozzle for spraying a surfactant which is arranged corresponding to the feeding port of the spiral feeding structure, a rotating grinding disc which is arranged in the pulverizing chamber and corresponds to the feeding port of the spiral feeding structure, a retaining ring which is arranged at the upper end of the grinding disc and is separated from the grinding disc and fixed in the pulverizing chamber, a grading wheel which is arranged at the center of the retaining ring and installed at the upper end opening of the pulverizing chamber, and an air inlet which is arranged at the bottom of the pulverizing chamber, wherein an upward airflow channel from the air inlet to the grading wheel is formed between the inner wall of the pulverizing chamber and the grinding disc and the retaining ring.

[0007] Preferably, the upper end of the material blocking ring is fixed to the top of the crushing chamber through a plurality of telescopic connecting rods, so that the material blocking ring can be adjusted and moved up and down.

[0008] Preferably, the classification wheel is controlled to rotate by a first motor installed at the upper end of the classification chamber, and the grinding disc is controlled to rotate by a second motor installed at the bottom of the grinding chamber.

[0009] Preferably, a plurality of evenly arranged crushing knives are provided on the inner side of the grinding disc.

[0010] As a further improvement of the above technical solution, the first discharge port of the classification chamber is also connected to a secondary classification mechanism, and the first discharge port is connected to the upper part of the secondary classification mechanism along a tangential direction.

[0011] Preferably, the secondary classification mechanism includes a first discharge port as a feed port of the secondary classification mechanism, a shell with a conical bottom, a fine powder discharge port arranged at the conical bottom, and an ultrafine powder discharge port arranged at the top center of the shell.

[0012] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0013] The grading micro-powder pulverizer of the utility model can remove heavier metal stones and the like in the material through the impurity removal mechanism and collect them through the collecting box, and the lighter materials enter the pulverizing chamber from the feeding port with the airflow, thereby avoiding the separate impurity removal operation before material pulverization, reducing the number of processes, thereby improving production efficiency and meeting the production indicators of energy saving, low consumption and emission reduction; the atomizing nozzle arranged at the feeding port corresponding to the spiral feeding structure can fully atomize the surfactant solution, and the material and the surfactant are evenly and fully mixed while feeding, so that the material and the surfactant are fully in contact and a coating reaction occurs, which greatly reduces the situation of agglomeration and adhesion of the material during pulverization, and improves the pulverizing efficiency and pulverizing effect; and the grading chamber buckle is clamped to the upper end of the pulverizing chamber, the connection is firm and reliable, and it is easy to disassemble, repair and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the grading micro powder pulverizer of the utility model.

[0015] like Figure 1 , crushing chamber-1, grading chamber-2, impurity removal mechanism-3, spiral feeding structure-4, collecting box-5, atomizing nozzle-6, grinding disc-7, baffle ring-8, grading wheel-9, air inlet-10, secondary grading mechanism-11, first discharge port-12, shell-13, micro powder discharge port-14, ultrafine powder discharge port-15. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0017] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0018] The utility model will be described in detail below with reference to the accompanying drawings. Figure 1 As shown: the grading micro-powder pulverizer described in this embodiment includes a pulverizing chamber 1, a grading chamber 2 which is buckled and connected to the upper end of the pulverizing chamber 1, a spiral feeding structure 4 which is connected to the pulverizing chamber 1 through a de-particle mechanism 3, a collecting box 5 which is connected to the de-particle outlet of the de-particle mechanism 3, an atomizing nozzle 6 for spraying a surfactant which is arranged corresponding to the feeding port of the spiral feeding structure, a rotating grinding disc 7 which is arranged in the pulverizing chamber 1 and corresponds to the feeding port of the spiral feeding structure, a retaining ring 8 which is separated from the grinding disc 7 and fixed in the pulverizing chamber 1 and is arranged at the upper end of the grinding disc 7, a grading wheel 9 which is arranged at the center of the retaining ring 8 and installed at the upper end opening of the pulverizing chamber 1, and an air inlet 10 which is arranged at the bottom of the pulverizing chamber 1, an upward airflow channel from the air inlet 10 to the grading wheel 9 is formed between the inner wall of the pulverizing chamber 1 and the grinding disc 7 and the retaining ring 8.

[0019] The grading micro-powder pulverizer described in this embodiment, when feeding, the material enters the impurity removal mechanism 3 through the spiral feeding structure 4, the heavier metal stones in the material fall from the impurity discharge port and are collected by the collecting box 5, and at the same time, the atomizing nozzle 6 arranged at the feeding port of the spiral feeding structure fully atomizes the surfactant solution, and the material and the surfactant are evenly and fully mixed while feeding, so that the lighter material is fully in contact with the surfactant and a coating reaction occurs, and then enters the pulverizing chamber from the feeding port with the air flow to be pulverized, thereby avoiding the separate impurity removal operation before material pulverization, reducing the process, thereby improving production efficiency, meeting the production indicators of energy saving, low consumption and emission reduction, and greatly reducing the material in Agglomeration and adhesion are produced during crushing, which improves the crushing efficiency and crushing effect; during crushing, the material entering the crushing chamber from the feed port falls on the grinding disc 7, and is ground and crushed by the rotating grinding disc 7, and the air intake from the air inlet 10 blows up the crushed micro-powder particles through the air flow channel and enters the classifying wheel 9 along the air flow channel. After being classified by the classifying wheel 9, the micro-powder particles that meet the requirements enter the classifying chamber 2 from the classifying wheel 9 and are discharged, and the micro-powder particles that do not meet the requirements are thrown to the retaining ring 8 and then fall back onto the grinding disc 7 for grinding. Since the classifying chamber 2 is buckled and clamped to the upper end of the crushing chamber 1, the connection is firm and reliable, and it is easy to disassemble, repair and clean.

[0020] As a preferred implementation of the above technical solution, the upper end of the baffle ring 8 is fixed to the top of the crushing chamber 1 by a plurality of telescopic connecting rods, so that the baffle ring 8 can be adjusted and moved up and down, so that the height gap between the baffle ring 8 and the grinding disc 7 can be adjusted according to the different materials to be crushed, so that the material falling from the inner wall of the baffle ring 8 can smoothly pass through the baffle ring 8 and move outward, thereby facilitating the crushing of the material.

[0021] For ease of installation and use, as a preferred implementation of the above technical solution, the classifying wheel 9 is controlled to rotate by a first motor installed at the upper end of the classifying chamber 2, and the grinding disc 7 is controlled to rotate by a second motor installed at the bottom of the crushing chamber 1.

[0022] As a preferred implementation of the above technical solution, a plurality of evenly arranged crushing knives are provided on the inner side of the grinding disc 7, thereby further improving the crushing efficiency.

[0023] In order to further classify the discharged material, as a further improvement of the above technical solution, the first discharge port 12 of the classification chamber 2 is further connected to a secondary classification mechanism 11.

[0024] As a preferred implementation of the above technical solution, the secondary classification mechanism 11 includes a first discharge port 12 as a feed port of the secondary classification mechanism 11, a shell 13 with a conical bottom, a fine powder discharge port 14 arranged at the bottom of the cone, and an ultrafine powder discharge port 15 arranged at the top center of the shell 13. The first discharge port 12 is connected to the upper part of the secondary classification mechanism along the tangential direction. When in use, the material entering from the first discharge port 12 enters the shell 13 along the tangential direction, and rotates downward along the inner wall of the shell 13 under the action of gravity until it falls to the conical part at the bottom. Due to the contraction of the cone, it moves closer to the center, and its tangential speed continues to increase. When it reaches the critical position of the vertebral body, it flips upward in the same direction to form an upward inward rotating airflow. The ultrafine pulverized inward rotating airflow moves upward and is discharged from the ultrafine powder discharge port 15, and the fine powder is discharged from the fine powder discharge port 14 at the bottom.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A grading micro powder pulverizer, characterized in that: It includes a crushing chamber, a grading chamber with a ring buckle clamped on the upper end of the crushing chamber, a spiral feeding structure connected to the crushing chamber through a debris removal mechanism, a collecting box connected to the debris discharge port of the debris removal mechanism, an atomizing nozzle for spraying a surfactant arranged corresponding to the feeding port of the spiral feeding structure, a rotating grinding disc arranged in the crushing chamber and corresponding to the feeding port of the spiral feeding structure, a retaining ring arranged at the upper end of the grinding disc, separated from the grinding disc and fixed in the crushing chamber, a grading wheel arranged at the center of the retaining ring and installed at the upper end opening of the crushing chamber, and an air inlet arranged at the bottom of the crushing chamber, an upward airflow channel from the air inlet to the grading wheel is formed between the inner wall of the crushing chamber and the grinding disc and the retaining ring.

2. A classifying micro powder pulverizer according to claim 1, characterized in that: The upper end of the baffle ring is fixed to the top of the crushing chamber through a plurality of telescopic connecting rods, so that the baffle ring can be adjusted and moved up and down.

3. A classifying micro powder pulverizer according to claim 1, characterized in that: The classification wheel is controlled to rotate by a first motor installed at the upper end of the classification chamber, and the grinding disc is controlled to rotate by a second motor installed at the bottom of the pulverizing chamber.

4. A classifying micro powder pulverizer according to claim 1, characterized in that: A plurality of evenly arranged crushing knives are arranged on the inner side of the grinding disc.

5. A classifying micro powder pulverizer according to claim 1, characterized in that: The first discharge port of the classification chamber is also connected to a secondary classification mechanism, and the first discharge port is connected to the upper part of the secondary classification mechanism along a tangential direction.

6. A classifying micro powder pulverizer according to claim 5, characterized in that: The secondary classification mechanism comprises a first discharge port as a feed port of the secondary classification mechanism, a shell with a conical bottom, a fine powder discharge port arranged at the conical bottom, and an ultrafine powder discharge port arranged at the top center of the shell.

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