A handheld ore powder sample preparation device

Abstract

The utility model discloses a handheld ore powder sample preparation device relates to mineral processing technical field, include: roller, rigid axle stem and operating arm, the roller is used for rolling on the workbench surface to roll -up the ore powder sample placed on the workbench surface, and the roller has the first end and the second end of relative setting, the rigid axle stem is from the first end of roller coaxial and enters the roller and is connected with the rotation of roller, operating arm and the rigid axle stem rigid connection with the one end of not entering the roller, and the other end is used for making operating personnel hold to promote the roller to roll on the workbench surface, and the extension direction of operating arm and the axial direction of rigid axle stem form non - zero angle, simple structure, convenient to use, effectively improve the mixing efficiency, effectively reduce the dust flying.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing technology, and in particular to a handheld mineral powder sample preparation device. Background Technology

[0002] In sample preparation experiments, the accuracy and representativeness of mineral powder samples directly affect the experimental results. Traditional methods for preparing mineral powder samples, such as manual mixing and scraper mixing, have a series of problems. In terms of efficiency, manual operation is time-consuming and labor-intensive, which cannot meet the needs of rapid preparation; in terms of mixing effect, it is difficult to ensure uniform mixing of mineral powder, affecting the accuracy of the sample; at the same time, the operation will cause a large amount of dust to fly, which not only pollutes the environment but may also harm the health of operators; the labor intensity is also relatively high.

[0003] While existing mechanical mixing devices can improve efficiency and mixing uniformity, they generally suffer from large size and high cost. This makes them unsuitable for the rapid preparation of small batches of samples, especially for delicate operations in small laboratory spaces. There is a lack of a small, handheld sample preparation device that combines ease of operation with good mixing performance to meet practical needs. Utility Model Content

[0004] The purpose of this invention is to provide a handheld mineral powder sample preparation device to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves mixing efficiency, and effectively reduces dust.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a handheld mineral powder sample preparation device, including: a roller, a rigid shaft, and an operating arm. The roller is used to roll on a worktable to crush a mineral powder sample placed on the worktable, and the roller has a first end and a second end arranged opposite to each other. The rigid shaft passes coaxially into the roller from the first end and is rotatably connected to the roller. The operating arm is rigidly connected to one end of the rigid shaft that does not extend into the roller, and the other end is used for the operator to hold and push the roller to roll on the worktable. The extension direction of the operating arm forms a non-zero angle with the axial direction of the rigid shaft.

[0007] Preferably, it also includes a quick-connect fitting, through which the operating arm is detachably connected to the rigid shaft.

[0008] Preferably, the quick-connect fitting includes a connecting plate, a locking nut, and a screw. The screw is coaxially and fixedly connected to the end of the rigid shaft that does not extend into the roller, and the diameter of the screw is smaller than the diameter of the rigid shaft. The connecting plate is provided with a first through hole, which is sleeved on the outside of the screw, and the diameter of the first through hole is smaller than the diameter of the rigid shaft. The locking nut is threadedly connected to the screw to lock the connecting plate.

[0009] Preferably, it further includes a gasket disposed between the connecting plate and the rigid shaft.

[0010] Preferably, the operating arm includes an integrally connected inclined section and a handle, the end of the inclined section away from the handle is fixedly connected to the connecting plate, and the extension line of the handle is perpendicular to the rigid shaft.

[0011] Preferably, the extension line of the means passes through the center of the roller along its length.

[0012] Preferably, it further includes a first bearing and a second bearing. The roller has a hollow structure. The first bearing and the second bearing are respectively fixedly connected to both ends inside the roller. The rigid shaft passes coaxially through the first bearing and the second bearing and is fixedly connected to the inner rings of the first bearing and the second bearing.

[0013] Preferably, both the first bearing and the second bearing are deep groove ball bearings.

[0014] Preferably, it further includes a side cover and a ring plate, the side cover being sealed and fixedly connected to the second end of the roller, the ring plate being sealed and fixedly connected to the first end of the roller, and a second through hole being provided in the middle of the ring plate for the rigid shaft to pass through.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] This invention provides a handheld mineral powder sample preparation device. The roller, acting directly on the mineral powder sample, achieves the function of compaction and mixing through rolling. A rigid shaft provides support for the roller's rotation and transmits power. The operating arm forms a non-zero angle with the rigid shaft, allowing the operator to apply force at a suitable angle, which is more ergonomic and makes pushing the roller easier and more convenient, improving the operability and accuracy of the sample preparation process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the handheld mineral powder sample preparation device provided by this utility model;

[0019] In the diagram: 1. Roller; 2. Rigid shaft; 3. Operating arm; 31. Inclined section; 32. Handle; 4. Connecting plate; 5. Locking nut; 6. Screw; 7. Washer; 8. First bearing; 9. Second bearing; 10. Side cover; 11. Ring plate; 12. Handle sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The purpose of this invention is to provide a handheld mineral powder sample preparation device to solve the problems existing in the prior art. It has a simple structure, is easy to use, effectively improves mixing efficiency, and effectively reduces dust.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] This embodiment provides a handheld mineral powder sample preparation device, such as... Figure 1As shown, the system includes: a roller 1, a rigid shaft 2, and an operating arm 3. The roller 1 is used to roll on a worktable to crush a mineral powder sample placed on the worktable, and the roller 1 has a first end and a second end arranged opposite to each other. The rigid shaft 2 coaxially passes through the first end of the roller 1 and is rotatably connected to the roller 1. The operating arm 3 is rigidly connected to the end of the rigid shaft 2 that does not extend into the roller 1, and the other end is used for the operator to hold and push the roller 1 to roll on the worktable. The extension direction of the operating arm 3 forms a non-zero angle with the axial direction of the rigid shaft 2. The roller 1, as the component that directly acts on the mineral powder sample, achieves the function of crushing and mixing through rolling. The rigid shaft 2 provides support for the rotation of the roller 1 and transmits power. The non-zero angle between the operating arm 3 and the rigid shaft 2 allows the operator to apply force at a suitable angle, which is more in line with ergonomic principles, making the operation of pushing the roller 1 to roll easier and more convenient, and improving the operability and accuracy of the sample preparation process.

[0025] In a preferred embodiment, the handheld mineral powder sample preparation device further includes a quick-connect fitting. The operating arm 3 is detachably connected to the rigid shaft 2 via the quick-connect fitting, allowing for easy disassembly and assembly of the operating arm 3 and the rigid shaft 2. When the device needs to be stored or transported after use, the operating arm 3 can be quickly disassembled, reducing the overall size of the device and facilitating storage and transport. Simultaneously, when the operating arm 3 or the rigid shaft 2 is damaged and requires repair or replacement, disassembly and replacement can be performed quickly, improving the device's maintenance convenience and maintainability.

[0026] In a preferred embodiment, the quick-connect fitting includes a connecting plate 4, a locking nut 5, and a screw 6. The screw 6 is coaxially fixedly connected to the end of the rigid shaft 2 that does not extend into the roller 1, and the diameter of the screw 6 is smaller than the diameter of the rigid shaft 2. The connecting plate 4 has a first through hole, which is fitted onto the outside of the screw 6, and the diameter of the first through hole is smaller than the diameter of the rigid shaft 2. The locking nut 5 is threadedly connected to the screw 6 to lock the connecting plate 4. This specific quick-connect fitting structure is simple and practical. By fixing the screw 6 to the rigid shaft 2, and by fitting the connecting plate 4 onto the screw 6 and locking it with the locking nut 5, a stable connection between the operating arm 3 and the rigid shaft 2 can be achieved. The smaller diameter screw 6 facilitates connection with the rigid shaft 2 without affecting the overall structural strength of the rigid shaft 2, and also facilitates the installation and disassembly of the connecting plate 4. After connection, the locking nut 5 ensures that the connecting plate 4 is firmly connected to the rigid shaft 2, preventing loosening during operation and ensuring the stability and reliability of the device operation.

[0027] In a preferred embodiment, the handheld mineral powder sample preparation device further includes a gasket 7, which is disposed between the connecting plate 4 and the rigid shaft 2. The gasket 7 plays several key roles. It increases the friction between the connecting plate 4 and the rigid shaft 2, further preventing the connecting plate 4 from loosening during device use and enhancing the stability of the connection. At the same time, the gasket 7 also acts as a buffer, reducing the mechanical impact between the rigid shaft 2 and the connecting plate 4 during operation, avoiding damage to components due to prolonged vibration and impact, and extending the service life of each component of the device.

[0028] In a preferred embodiment, the operating arm 3 includes an integrally connected inclined section 31 and a handle 32. The end of the inclined section 31 away from the handle 32 is fixedly connected to the connecting plate 4. The extension line of the handle 32 is perpendicular to the rigid shaft 2. This structural design of the operating arm 3 further optimizes its ergonomic characteristics. The integral connection between the inclined section 31 and the handle 32, and the perpendicularity of the extension line of the handle 32 to the rigid shaft 2, allows the operator to exert force more effectively when holding the handle 32 to push the device, conforming to normal human operating habits. The inclined section 31 can also adjust the angle of the operating arm 3 to a certain extent, allowing the operator to operate more comfortably in different working positions and postures, reducing hand fatigue and improving operating comfort and efficiency.

[0029] In a preferred embodiment, the extension line of the means 32 passes through the center of the length direction of the roller 1, so that when the operator pushes the operating arm 3, the force applied can be better applied to the central axis of the roller 1, ensuring that the roller 1 can roll smoothly on the worktable, avoiding the roller 1 from shaking or deviating, thereby improving the effect of crushing and mixing the mineral powder sample, and ensuring the uniformity and consistency of the mineral powder sample mixing.

[0030] In a preferred embodiment, the handheld mineral powder sample preparation device further includes a first bearing 8 and a second bearing 9. The roller 1 has a hollow structure. The first bearing 8 and the second bearing 9 are respectively fixedly connected to both ends inside the roller 1. A rigid shaft 2 coaxially passes through the first bearing 8 and the second bearing 9 and is fixedly connected to the inner rings of the first bearing 8 and the second bearing 9. The configuration of the first bearing 8 and the second bearing 9 provides reliable support for the rotation of the roller 1. The fixed connection of the rigid shaft 2 to the inner rings of the bearings allows the roller 1 to rotate smoothly around the rigid shaft 2. The hollow structure of the roller 1 reduces the overall weight of the device and helps to reduce costs, while also providing space for installing other possible components inside the roller 1. The fixed connection of the two bearings at both ends of the roller 1 effectively limits the axial and radial displacement of the roller 1 during rotation, ensuring the stability and smoothness of the roller 1's rotation and improving the overall performance of the device.

[0031] In a preferred embodiment, both the first bearing 8 and the second bearing 9 are deep groove ball bearings. Deep groove ball bearings have advantages such as low coefficient of friction, high limiting speed, simple structure, low manufacturing cost, and convenient installation and disassembly. Using deep groove ball bearings as the first bearing 8 and the second bearing 9 can meet the rotation requirements of the roller 1 during normal operation, reduce energy loss during roller 1 rotation, and ensure the smoothness and efficiency of roller 1 rotation. At the same time, its simple structure and low manufacturing cost also help to reduce the overall manufacturing cost of the device, and the installation and disassembly operations are relatively simple when maintenance and replacement are required.

[0032] In a preferred embodiment, the handheld mineral powder sample preparation device further includes a side cover 10 and an annular plate 11. The side cover 10 is sealed and fixedly connected to the second end of the roller 1, and the annular plate 11 is sealed and fixedly connected to the first end of the roller 1. A second through hole is provided in the middle of the annular plate 11 for the rigid shaft 2 to pass through. The side cover 10 and the annular plate 11 enhance the sealing performance of the roller 1. The side cover 10 seals the second end of the roller 1, and the annular plate 11 seals the first end, effectively preventing mineral powder from entering the interior of the roller 1 and avoiding wear or damage to the internal components of the roller 1. It also prevents dust and other contaminants that may appear inside the roller 1 from contaminating the mineral powder sample. The second through hole in the middle of the annular plate 11 provides a passage for the rigid shaft 2 to pass through, ensuring normal connection and rotation between the rigid shaft 2 and the roller 1. At the same time, this sealing structure also helps to maintain the cleanliness of the inside of the device, improving the overall hygiene performance and service life of the device.

[0033] In a preferred embodiment, the tool cover 12 is further included. The tool cover 12 is fitted and fixed to the handlebar 32. The tool cover 12 is made of a non-slip and comfortable material, such as rubber or silicone.

[0034] Example 2

[0035] This embodiment also provides a method of using the handheld mineral powder sample preparation device as described in any of Embodiment 1, including the following steps:

[0036] Preparation:

[0037] Choose a flat and clean work surface. This is to ensure that the mineral powder is in a stable state during the spreading and rolling process, and to avoid uneven distribution of mineral powder or poor rolling of roller 1 due to unevenness of the work surface.

[0038] The mineral powder sample to be prepared is evenly spread on the worktable. The spreading thickness is preferably 1 / 5 to 1 / 2 of the diameter of the roller 1 of the sample preparation device. A suitable spreading thickness ensures that the roller 1 can fully contact the mineral powder during rolling and compaction, achieving a good mixing effect. A thickness thinner than this may lead to over-compaction of the mineral powder, while a thickness thicker may prevent the mineral powder from being fully mixed.

[0039] Operating device:

[0040] The operator holds the handle 32 of the operating arm 3, which is rigidly connected to the end of the rigid shaft 2 that does not extend into the roller 1. Due to the design of the inclined section 31 of the operating arm 3 and the handle 32, as well as its connection with the rigid shaft 2, this posture is ergonomic and facilitates the operator to exert force to push the device.

[0041] Roller 1 is gently pressed onto the surface of the spread mineral powder sample to prepare for subsequent rolling and mixing operations.

[0042] The operating arm 3 is pushed along a preset path, causing the roller 1 to roll on the surface of the mineral powder. Preset paths include, for example, straight reciprocating motion, spiral, crisscross, grid, or star-shaped patterns. Each preset path has its own characteristics. The grid or star-shaped rolling pattern ensures that all areas of the mineral powder are thoroughly mixed. Through these diverse paths, the mineral powder is simultaneously tumbled and mixed in both vertical and horizontal directions under the rolling and pressing action of the roller 1, greatly improving mixing efficiency and uniformity.

[0043] Mixing optimization:

[0044] During the rolling of roller 1, the mineral powder sample is scraped and redistributed in a timely manner. The purpose of this is to ensure that all mineral powder particles have the opportunity to fully contact roller 1 and participate in the mixing, avoiding any areas where the mineral powder is not mixed, until the mineral powder sample reaches a uniformly mixed state.

[0045] The mixing time is not fixed and can be adjusted according to the amount of mineral powder, particle size, compositional differences, and the required degree of mixing. It is generally 5-15 minutes. For example, when the amount of mineral powder is large, the particle size is uneven, or the composition is complex, the mixing time can be appropriately extended to ensure the final mixing effect.

[0046] End of work:

[0047] After the mineral powder sample reaches a uniformly mixed state, the mixed mineral powder sample is taken out for subsequent analysis or experimentation.

[0048] To further reduce dust inhalation during the entire sample preparation process, dust covers can be used or operations can be carried out in a fume hood to improve the working environment for operators.

[0049] In addition, regarding maintenance procedures related to component connections during the use of the device:

[0050] If the device requires storage, transportation, maintenance, or replacement after a period of use, the operating arm 3 can be disassembled using a quick-connect fitting. The quick-connect fitting includes a connecting plate 4, a locking nut 5, and a screw 6. Simply loosen the locking nut 5, which is threaded onto the screw 6, and remove the connecting plate 4 from the screw 6 to separate the operating arm 3 from the rigid shaft 2. Installation is the reverse process: place the first through hole of the connecting plate 4 onto the outside of the screw 6 and tighten it with the locking nut 5. Because the overall size is reduced after disassembling the operating arm 3 from the rigid shaft 2, the device is easier to store and transport; if one component is damaged, it can be quickly replaced.

[0051] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A handheld mineral powder sample preparation device, characterized in that: include: A roller for rolling on a worktable to crush a mineral powder sample placed on the worktable, and the roller having a first end and a second end disposed opposite to each other; A rigid shaft, which coaxially passes through the first end of the roller and is rotatably connected to the roller; as well as An operating arm is rigidly connected to one end of the rigid shaft that does not extend into the roller, and the other end is used for the operator to hold and push the roller to roll on the worktable. The extension direction of the operating arm forms a non-zero angle with the axial direction of the rigid shaft.

2. The handheld mineral powder sample preparation device according to claim 1, characterized in that: It also includes a quick-connect fitting, through which the operating arm is detachably connected to the rigid shaft.

3. The handheld mineral powder sample preparation device according to claim 2, characterized in that: The quick-connector includes a connecting plate, a locking nut, and a screw. The screw is coaxially and fixedly connected to the end of the rigid shaft that does not extend into the roller, and the diameter of the screw is smaller than the diameter of the rigid shaft. The connecting plate is provided with a first through hole, which is sleeved on the outside of the screw, and the diameter of the first through hole is smaller than the diameter of the rigid shaft. The locking nut is threadedly connected to the screw to lock the connecting plate.

4. The handheld mineral powder sample preparation device according to claim 3, characterized in that: It also includes a gasket disposed between the connecting plate and the rigid shaft.

5. The handheld mineral powder sample preparation device according to claim 4, characterized in that: The operating arm includes an integrally connected inclined section and a handle. The end of the inclined section away from the handle is fixedly connected to the connecting plate, and the extension line of the handle is perpendicular to the rigid shaft.

6. The handheld mineral powder sample preparation device according to claim 5, characterized in that: The extension line of the means passes through the center of the roller along its length.

7. The handheld mineral powder sample preparation device according to claim 1, characterized in that: It also includes a first bearing and a second bearing. The roller has a hollow structure. The first bearing and the second bearing are respectively fixedly connected to both ends inside the roller. The rigid shaft passes through the first bearing and the second bearing coaxially and is fixedly connected to the inner rings of the first bearing and the second bearing.

8. The handheld mineral powder sample preparation device according to claim 7, characterized in that: Both the first and second bearings are deep groove ball bearings.

9. The handheld mineral powder sample preparation device according to claim 8, characterized in that: It also includes a side cover and a ring plate. The side cover is sealed and fixedly connected to the second end of the roller, and the ring plate is sealed and fixedly connected to the first end of the roller. A second through hole is provided in the middle of the ring plate, which is used to allow the rigid shaft to pass through.

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