A laboratory tritube mill
By using a small high-speed rotary table and centripetal force to concentrate the sample in a three-head grinder, the problems of low efficiency and poor experimental accuracy of existing three-head grinders are solved, and efficient and convenient sample grinding is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN GOLD RES INST
- Filing Date
- 2025-04-07
- Publication Date
- 2026-06-16
AI Technical Summary
Existing three-head grinders have low grinding efficiency, dispersed sample distribution, long grinding time, inconvenient cleaning and collection, and poor test accuracy.
A small, high-speed rotating stage is used to drive the mortar in a small-range circular motion. The centripetal force is used to gather the sample in the center of the mortar, and the grinding is carried out in combination with a fixed pestle to avoid sample dispersion.
It improves grinding efficiency, reduces grinding time, simplifies operation procedures, and ensures the accuracy and convenience of the test.
Smart Images
Figure CN224365831U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of laboratory mineral material sample preparation equipment, specifically relating to a three-head grinder for laboratory use. Background Technology
[0002] In fields such as mineral processing, materials science, and chemistry, experiments often require the analysis and testing of samples. These processes typically have strict requirements on sample fineness. Manual grinding is inefficient, thus requiring grinding equipment to achieve the required fineness. A grinding mill is a grinding machine that embeds abrasive particles to grind samples. A three-head grinding mill, containing three grinding rods and three mortars, can grind three different samples simultaneously, further improving grinding efficiency.
[0003] The widely used three-head grinder currently uses a fixed mortar and a rotating pestle to grind the sample. This grinding method results in a relatively dispersed distribution of the sample in the mortar, which is not very efficient. Grinding a sample once usually takes more than 8 minutes. After grinding, cleaning and collecting the sample is also quite troublesome. Moreover, rotating the pestle often causes the sample to spill out, which reduces the accuracy of the experiment.
[0004] Therefore, it is essential to design a new type of high-efficiency three-head grinding machine. Summary of the Invention
[0005] To overcome the shortcomings of existing technologies, this utility model provides a laboratory three-head grinder, which includes a small high-speed rotary table, enabling efficient preparation of mineral materials. It can prepare samples that meet the fineness requirements for laboratory testing and mechanistic analysis, while reducing grinding time, increasing ease of operation, reducing the labor intensity of experimental personnel, and ensuring the accuracy of experimental results.
[0006] A laboratory three-head grinder includes a base mechanism, a grinding mechanism, a column 8, and partitions 9. The column 8 is fixed in the middle of the base mechanism, and three partitions 9 are evenly arranged on its outer wall, dividing the space on the base mechanism into three parts. A grinding mechanism is set between each pair of partitions 9.
[0007] The grinding mechanism includes a cantilever 2, a pestle 3, a mortar 4, and a rotating table 5. The rotating table 5 is fixed on the base mechanism, the mortar 4 is fixed on the rotating table surface of the rotating table 5, the cantilever 2 is movably connected to the top of the column 8 through a connecting rod 10, and the bottom of the cantilever 2 is provided with a pestle 3, the bottom of which extends into the mortar 4.
[0008] The base mechanism includes a workbench 6 and a base 7, wherein the workbench 6 is fixed on the base 7, the column 8 is fixed in the middle of the base 7, and three partitions 9 are evenly arranged on its outer wall, dividing the space on the workbench 6 into three parts, and a grinding mechanism is set between each two partitions 9.
[0009] One end of the connecting rod 10 is movably connected to the top of the column 8, and the top end of the cantilever 2 is movably connected to the other end of the connecting rod 10.
[0010] The pestle 3 is connected to the bottom of the cantilever 2 by a spring.
[0011] The mortar 4 is equipped with a detachable lid, through which the pestle 3 extends into the mortar 4.
[0012] The rotary table 5 is a dual-axis rotary table from Zhixiang Optoelectronics.
[0013] The beneficial effects of this utility model are:
[0014] The laboratory three-head grinder provided by this utility model has a high-speed rotating stage set below the mortar. The rotating stage drives the mortar to make a small-range circular motion. The sample in the mortar will be subjected to centripetal force and gather in the center of the mortar. When the fixed pestle above grinds the sample, it avoids the reduction of grinding efficiency due to the sample being too dispersed, and at the same time avoids the sample from spilling out, thus increasing the accuracy of the test. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the laboratory three-head grinder of this utility model.
[0017] Figure 2 This is a schematic diagram of a mortar and pestle, a workbench, and how they work together.
[0018] The components in the attached diagram are labeled as follows: 1-stud; 2-cantilever; 3-pestle; 4-mortar; 5-rotating table; 6-workbench; 7-base; 8-column; 9-partition; 10-connecting rod. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0020] Example 1
[0021] A laboratory three-head grinder includes a base mechanism, a grinding mechanism, a column 8, and a partition 9. The grinding mechanism includes a cantilever 2, a pestle 3, a mortar 4, and a rotating table 5. The column 8 and the rotating table 5 are both fixed on the base mechanism. The mortar 4 is fixed on the rotating table surface of the rotating table 5. The cantilever 2 is movably connected to the top of the column 8 via a connecting rod 10, and a pestle 3 is provided at its bottom, with the bottom of the pestle 3 extending into the mortar 4.
[0022] The column 8 is fixed in the middle of the base mechanism, and three partitions 9 are evenly arranged on its outer wall, dividing the space on the base mechanism into three parts, with a grinding mechanism set between each pair of partitions 9.
[0023] The base mechanism includes a workbench 6 and a base 7, wherein the workbench 6 is fixed on the base 7, the column 8 is fixed in the middle of the base 7, and three partitions 9 are evenly arranged on its outer wall, dividing the space on the workbench 6 into three parts, and a grinding mechanism is set between each two partitions 9.
[0024] One end of the connecting rod 10 is movably connected to the top of the column 8 via a stud 1, and the top end of the cantilever 2 is movably connected to the other end of the connecting rod 10 via a stud 1.
[0025] The pestle 3 is connected to the bottom of the cantilever 2 by a spring. The pressure of the spring presses the pestle 3 into the mortar 4, making the grinding more thorough.
[0026] The mortar 4 is equipped with a detachable lid, through which the pestle 3 extends into the mortar 4.
[0027] When preparing fine-particle samples for testing and mechanistic analysis, the sample to be ground is first poured into the mortar 4, the mortar lid is closed, and the pestle 3 is pressed against the inner surface of the mortar 4 under the action of the spring. The rotating table 5 is started, which drives the mortar 4 to make a small-range rapid circular motion. The sample in the mortar 4 begins to move and is subjected to centripetal force, and always converges at the center of the mortar 4.
[0028] During the grinding process, the rotary table 5 is turned on, causing the mortar 4 to rotate while the pestle 3 remains stationary. The cantilever 2 does not need to move autonomously but passively. As the mortar 4 rotates, and because it contains the sample, the pestle 3 is continuously pressed into the mortar 4 by the preload of the spring. Therefore, during grinding, the pestle 3 only moves vertically following the undulations of the inner surface of the mortar 4. This ensures that the sample gathers entirely around the pestle 3, greatly improving grinding efficiency and preventing sample spillage, thus guaranteeing experimental accuracy. After the set grinding time, the rotary table 5 stops rotating, ending the grinding process. The sample in the mortar 4 is then collected, simplifying the operation.
[0029] Example 2
[0030] This utility model mainly includes a rotatable cantilever 2, a pestle 3, a mortar 4, a rotating platform 5, a worktable 6, a base 7, a column 8, and a partition 9. There are three rotating platforms 5 and three partitions 9 located above the worktable 6. The column 8 is located directly above each rotating platform 5. The mortar 4 is located above each rotating platform 5. The cantilever 2 is connected to the column 8 via studs 1. The pestle 3 is located below the cantilever 2 and extends into the mortar 4. A spring device is provided at the connection between the pestle 3 and the cantilever 2. The cantilever 2 is fixed to the column 8 with bolts to facilitate the pouring of samples from the mortar 4. The pestle 3 is made of agate and fixed to the cantilever 2. The rotating platform 5 is fixed to the worktable 6. The worktable 6 is located on the base 7. The mortar 4 is made of agate and fixed to the upper rotating surface of the rotating platform 5.
[0031] The cantilever 2 replaces manual operation, meaning that the cantilever 2 does not need to move autonomously, but rather moves passively. As the mortar 4 rotates, the material inside the mortar 4 varies in density, and the pestle 3 is continuously pressed into the mortar 4 under the preload of the spring, thus causing the cantilever 2 to move up and down.
[0032] The rotating stage 5 is a high-speed rotating stage with a rotation speed greater than 360° / s, and its rotation speed can be adjusted according to the different fluidity of the grinding sample.
[0033] The mortar 4 can be driven by the rotating table 5 to make a small-range circular motion.
[0034] Each grinding unit can operate independently to grind different samples.
[0035] The mortar 4 is equipped with a removable lid to further prevent sample spillage.
[0036] A spring device is provided on the upper part of the pestle 3 so that the pestle 3 presses tightly against the sample in the mortar 4 and moves up and down with the height of the inner surface of the mortar 4.
[0037] The rotating table 5 can be tilted, which can tilt the mortar 4, making it easier to pour out the sample in the mortar 4.
[0038] The rotary table 5 is a dual-axis rotary table from Zhixiang Optoelectronics.
[0039] The following explains the steps and principles of this utility model's three-head laboratory grinder for achieving efficient and precise grinding:
[0040] When preparing fine-particle samples for testing and mechanistic analysis, the sample to be ground is first poured into the mortar 4, and the lid is placed on top. The pestle 3, under the action of a spring device, adheres tightly to the inner surface of the mortar 4. The rotating table 5 is then started, causing the mortar 4 to perform a small-range, rapid circular motion. The sample in the mortar 4 begins to move and is subjected to centripetal force, always converging at the center of the mortar 4. The rotation speed of the rotating table 5 can be adjusted according to the different flowability of the sample; that is, when the sample has poor flowability, the rotation speed of the rotating table 5 needs to be increased to make the sample more concentrated. During the grinding process, the pestle 3 only moves vertically along the undulations of the inner surface of the mortar 4, so the sample is all gathered around the pestle 3, which greatly improves grinding efficiency and avoids sample spillage, ensuring the accuracy of the experiment. After the set grinding time, the rotating table 5 stops rotating, the grinding is completed, and the sample in the mortar 4 is collected, simplifying the operation.
[0041] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the scope of protection of the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, any equivalent substitutions or modifications made by those skilled in the art based on the technical solution and the inventive concept of the present invention within the scope of the technical concept disclosed in the present invention shall all fall within the scope of protection of the present invention.
[0042] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0043] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A laboratory triple bead mill characterized in that, It includes a base mechanism, a grinding mechanism, a column (8), and a partition (9). The column (8) is fixed in the middle of the base mechanism, and three partitions (9) are evenly arranged on its outer wall to divide the space on the base mechanism into three parts. A grinding mechanism is set between each pair of partitions (9). The grinding mechanism includes a cantilever (2), a pestle (3), a mortar (4) and a rotating platform (5), wherein the rotating platform (5) is fixed on the base mechanism, the mortar (4) is fixed on the rotating surface of the rotating platform (5), the cantilever (2) is movably connected to the top of the column (8) through a connecting rod (10), and a pestle (3) is provided at its bottom, with the bottom of the pestle (3) extending into the mortar (4).
2. A three-headed grinder for laboratory use according to claim 1, characterized in that, The base mechanism includes a workbench (6) and a base (7), wherein the workbench (6) is fixed on the base (7), the column (8) is fixed in the middle of the base (7), and three partitions (9) are evenly arranged on its outer wall, dividing the space on the workbench (6) into three parts, and a grinding mechanism is set between each two partitions (9).
3. A three-head grinder for laboratory use according to claim 1, characterized in that, One end of the connecting rod (10) is movably connected to the top of the column (8), and the top end of the cantilever (2) is movably connected to the other end of the connecting rod (10).
4. A three-headed grinder for laboratory use according to claim 1, characterized in that, The pestle (3) is connected to the bottom of the cantilever (2) by a spring.
5. A three-headed grinder for laboratory use according to claim 1, characterized in that, The mortar (4) is provided with a detachable lid, through which the pestle (3) extends into the mortar (4).
6. A three-headed grinder for laboratory use according to claim 1, characterized in that, The rotary table (5) is a dual-axis rotary table from Zhixiang Optoelectronics.