Powder sampling device and sampling method

Abstract

The present application relates to the technical field of powder sampling, and discloses a powder sampling device and a sampling method, the powder sampling device comprising a columnar sampling main body, the side surface of the sampling main body being provided with a groove; the sampling main body having oppositely arranged insertion ends and holding ends, the outer side of the holding end being provided with a clamping groove; the groove being externally provided with a cover plate matched therewith, the end portion of the cover plate being provided with a pull rod capable of being plug-in arranged in the clamping groove. The powder sampling device can sample at different depths of a material bin, is convenient to operate, and can quantitatively sample, thereby solving the problem of inaccurate sampling of the current sampling mode.

Description

Technical Field

[0001] This invention relates to the field of powder sampling technology, and more specifically to powder sampling devices and sampling methods. Background Technology

[0002] Powder materials are used in various fields such as automobile manufacturing and chemical engineering. They are typically stored and transported in silos / bags at the kilogram or even ton level. Before use, it is necessary to confirm the material's state (i.e., its performance indicators) and to sample and test it.

[0003] Existing sampling tools are generally scoops or shovels, which can only be used for single-point sampling and can only be used for sampling on the surface. If it is necessary to sample the material in the middle or lower part of the ton bag, the upper layer of material must be dug out before the material in the corresponding part can be sampled. This increases the workload of employees and also increases the risk of introducing foreign objects. Summary of the Invention

[0004] The purpose of this invention is to overcome the problem that existing sampling tools can only sample at a single point and on the surface, and to provide a powder sampling device and method. This powder sampling device can sample at different depths in the silo, is easy to operate, and can perform quantitative sampling, thus solving the problem of inaccurate sampling in current sampling methods.

[0005] To achieve the above objectives, the present invention provides a powder sampling device, which includes a cylindrical sampling body with a groove on its side; the sampling body has an insertion end and a gripping end disposed opposite to each other, and a slot is formed on the outer side of the gripping end; a cover plate adapted to the groove is disposed outside the groove, and a pull rod that can be inserted and removed from the slot is disposed at the end of the cover plate.

[0006] Preferably, the pull rod and the cover plate are integrally formed, and the head of the insertion end is arc-shaped.

[0007] Preferably, the slot is provided with a first positioning mechanism, which is configured to fix the pull rod to the sampling body with a specified extension length.

[0008] Preferably, the first positioning mechanism is a buckle, which includes a buckle plate and a set screw. The buckle plate can cover the opening of the slot, and the buckle plate has a threaded hole. The set screw can be screwed into or out of the threaded hole to fasten the pull rod or loosen the pull rod.

[0009] Preferably, the slot is provided with a mechanical power source for driving the pull rod to slide.

[0010] Preferably, the sampling body is a solid structure with a smooth outer surface, and the contact surface between the cover plate and the sampling body is a smooth surface.

[0011] Preferably, the powder sampling device further includes a quantitative mechanism, which is a scale line set on the pull rod; and / or a sensor built into the groove.

[0012] Preferably, the powder sampling device further includes a second positioning mechanism; the second positioning mechanism includes a limiting protrusion disposed on the surface of the sampling body, and a limiting ring capable of sliding between the insertion end and the limiting protrusion, or

[0013] The second positioning mechanism includes a first guide groove disposed on the sampling body for guiding the cover plate and a second guide groove for guiding the pull rod.

[0014] Preferably, multiple grooves, slots, covers, and pull rods are provided in a one-to-one correspondence, and the distances between the multiple grooves and the insertion end are all different.

[0015] In another aspect, the present invention provides a sampling method using the aforementioned powder sampling device, comprising the following steps:

[0016] S1, the cover plate is pushed to cover the groove by the pull rod;

[0017] S2, insert the sampling body into the sampling material, and make the groove submerged;

[0018] S3, the cover plate is pulled by the pull rod to expose at least a portion of the groove for sampling;

[0019] S4, the cover plate is pushed by the pull rod to close the groove, thus completing the sampling;

[0020] S5, pull out the powder sampling device, open the cover and take out the sample;

[0021] S6, Clean the powder sampling device.

[0022] Through the above technical solution, the powder sampling device can be inserted into different depths of the silo through the columnar sampling body and sampled through the groove. It is easy to operate. Furthermore, the use of a groove of a specific size for sampling enables quantitative sampling, which solves the problem of inaccurate sampling in the current sampling method. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a preferred embodiment of the powder sampling device of Example 1;

[0024] Figure 2 yes Figure 1 A side view of a preferred embodiment of the main body of the medium powder sampling device;

[0025] Figure 3 yes Figure 1 A schematic diagram of a preferred embodiment of the pull plate and cover plate of the powder sampling device;

[0026] Figure 4 yes Figure 1 A magnified schematic diagram of a partial cross-section;

[0027] Figure 5 This is a schematic diagram of a preferred embodiment of the powder sampling device of Example 2;

[0028] Figure 6 This is a schematic diagram of a preferred embodiment of the powder sampling device of Example 3;

[0029] Figure 7 yes Figure 6 Another perspective illustration;

[0030] Figure 8 This is a schematic diagram of a preferred embodiment of the powder sampling device in Example 4.

[0031] Explanation of reference numerals in the attached figures

[0032] 1-Grip end; 2-Slot; 3-Pull rod; 4-Cover plate; 5-Sampling body; 6-Insert end; 7-Groove; 8-Mechanical power source; 9-Limiting protrusion; 10-Limiting ring; 11-First guide groove; 12-Second guide groove. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] In this invention, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0035] See Figure 1-4 The powder sampling device shown includes a cylindrical sampling body 5, with a groove 7 on the side of the sampling body 5; the sampling body 5 has an insertion end 6 and a gripping end 1 arranged opposite to each other, and a slot 2 is opened on the outer side of the gripping end 1; a cover plate 4 adapted to the groove 7 is provided outside the groove 7, and a pull rod 3 that can be inserted and removed from the slot 2 is provided at the end of the cover plate 4.

[0036] By implementing the above technical solution, the insert plate is composed of the pull rod 3 and the cover plate 4. The pull rod 3 is set at the end facing the gripping end 1 and can be inserted and fixed in the slot 2. Through the cooperation of the insert plate and the slot 2, the groove 7 can be kept closed, open or partially open by the cover plate 4.

[0037] Because of the use of a columnar sampling body 5, it can be inserted into the hopper at different depths and sampled through the groove 7, making operation convenient. Furthermore, the use of a groove 7 of a specific size enables quantitative sampling, solving the problem of inaccurate sampling in current methods. The size and specifications of the groove 7 can be selected as needed, such as a rectangular structure.

[0038] In this invention, the shape of the sampling body 5 can be selected as needed. For example, the sampling body 5 can be a long and thin tubular structure, and the pull rod 3 and the cover plate 4 can be pushed and pulled freely as a whole.

[0039] In this embodiment, the pull rod 3 and the cover plate 4 are integrally formed, and the head of the insertion end 6 is arc-shaped. The integral formation of the pull rod 3 and the cover plate 4 increases the strength of use and can be held with one or two hands. In addition, the arc-shaped head of the insertion end 6 makes it easier to insert into the material. When the device is sampling, it is vertically inserted into the ton bag while the cover plate 4 is covering the groove 7. The arc-shaped plug of the sampling body 5 makes it easier to insert between powder particles, while avoiding the risk of sharp points puncturing the ton bag.

[0040] In this embodiment, the slot 2 is provided with a first positioning mechanism, which is configured to fix the pull rod 3 to the sampling body 5 with a specified insertion length.

[0041] The first positioning mechanism only needs to be able to fix the position of the pull rod 3. For example, the first positioning mechanism is a buckle, which includes a buckle plate and a set screw. The buckle plate can cover the groove of the buckle 2. The buckle plate has a threaded hole. The set screw can be screwed into or out of the threaded hole to tighten or loosen the pull rod 3.

[0042] See Figure 5 In another embodiment shown, the slot 2 is provided with a mechanical power source 8 for driving the pull rod 3 to slide. The mechanical power source 8 is a cylinder or a motor, which can be electrically controlled, and drives the pull rod 3 to move axially along the sampling body 5 via a belt or hinge, thereby causing the cover plate 4 to close or open the groove 7. Figure 5 As shown, a is the groove 7 in the half-open state; b is the groove 7 in the fully open state; and c is the groove 7 in the fully closed state.

[0043] In this embodiment, the sampling body 5 has a solid structure with a smooth outer surface, and the contact surface between the cover plate 4 and the sampling body 5 is a smooth surface. The sampling body 5 is a solid columnar structure. Both the sampling body 5 and the cover plate 4 are made of materials with smooth surfaces and not easily deformable. In industries with special requirements, such as the strict control of metal foreign matters in the cathode material, non-metallic materials are used. The sampling body 5 being a solid structure can avoid deformation and affect its sampling accuracy. The groove 7 is a concave structure carved on the solid tube body, and the number, size, and distribution position can all be customized according to requirements. The groove 7 cannot be adjusted after the sampling body 5 is manufactured; each single groove 7 is independent of each other to prevent cross-contamination of materials during sampling.

[0044] In this embodiment, the powder sampling device further includes a quantitative mechanism. The quantitative mechanism is a scale line provided on the pull rod 3; and / or, an induction scale built in the groove 7. Quantitative sampling can be achieved through the quantitative mechanism. The induction scale, such as being installed on the bottom wall of the groove 7, and the sampling body 5 must be inserted vertically into the ton bag for accurate calculation. A level can be installed at any position on the handle or the tube body that does not affect the normal use of the sampling body 5 to ensure that the sampling body 5 is in a vertically inserted state. The induction scale includes an induction part and a display part connected by signals. The induction part is arranged at the bottom end of the groove 7, which is convenient for sensing the weight of the powder sample. In addition, for the convenience of displaying and reading the indication, the display part of the induction scale can be arranged at the handle, which will not affect normal sampling either.

[0045] The length of the sampling body 5 can be customized according to the use and sampling depth. When the length of the insertion plate is relatively long, such as greater than 1 m, a limiting structure can be set to ensure that the pull rod 3 does not deform during the insertion process.

[0046] Such as Figure 6 And 7 As shown in the figure, in another embodiment of the present invention, the powder sampling device further includes a second positioning mechanism; the second positioning mechanism includes a limiting protrusion 9 provided on the surface of the sampling body 5, and a limiting ring 10 that can slide between the insertion end 6 and the limiting protrusion 9. It should be noted that the distance between the limiting protrusion 9 and the distal end of any groove 7 is greater than the length of the groove 7. Here, the distal end refers to the end of the groove 7 close to the insertion end 6.

[0047] Set the height of the limiting protrusion 9 as h, the inner diameter of the limiting ring 10 as d1, the outer diameter of the sampling body 5 as d2, and the thickness of the insertion plate as L. Then, L < d1 - d2 < h. Through such a setting, the insertion plate can pass through the gap between the limiting ring 10 and the sampling body 5, and at the same time, the limiting protrusion 9 can play a role in blocking and limiting the limiting ring 10.

[0048] Another example is Figure 8As shown, in another embodiment, the second positioning mechanism includes a first guide groove 11 provided on the sampling body 5 for guiding the cover plate 4 and a second guide groove 12 for guiding the pull rod 3. The length of the first guide groove 11 at the cover plate 4 position is 2-3 times the length of the cover plate 4, and the second guide groove 12 at the pull rod 3 position extends from the end of the guide groove of the cover plate 4 to the slot 2.

[0049] In this invention, the thickness of the cover plate 4 is no more than 10 mm, and preferably, the thickness of the cover plate 4 is 3 mm to 7 mm.

[0050] In this invention, multiple grooves 7, slots 2, cover plates 4, and pull rods 3 are provided in a one-to-one correspondence, and the distances between the multiple grooves 7 and the insertion end 6 are all different. This arrangement allows for simultaneous sampling of products at different depths, and the grooves 7 are independent and not interconnected. Insert plates are provided in equal numbers to the grooves 7, and each insert plate can be pushed and pulled independently within the slot 2, with each insert plate corresponding to a groove 7.

[0051] In this invention, the sampling device is made of metal or plastic. When it is metal, it is preferably an alloy of one or more of iron, copper, and aluminum. When it is plastic, it is preferably polyethylene, polytetrafluoroethylene, polypropylene, or nylon.

[0052] In addition, the gripping end 1 is also provided with a handle; preferably, the handle is arranged perpendicular to the sampling body 5, and a level is provided on the handle.

[0053] The pull rod 3 and the cover plate 4 are tightly connected, and both the inner and outer surfaces are smooth. The thickness of the cover plate 4 can be as thin as possible according to the material, while ensuring that it will not break or deform, so that it can completely cover the groove 7. When inserting powder, the thickness of the cover plate 4 will not cause excessive resistance.

[0054] In another aspect, the present invention provides a sampling method using the aforementioned powder sampling device, comprising the following steps:

[0055] S1, the cover plate 4 is pushed to cover the groove 7 by the pull rod 3;

[0056] S2, the sampling body 5 is inserted into the sampling material, and the groove 7 is submerged;

[0057] S3, the cover plate 4 is pulled by the pull rod 3 to expose at least a portion of the groove 7 for sampling;

[0058] S4, the cover plate 4 is pushed by the pull rod 3 to close the groove 7, thus completing the sampling;

[0059] S5, pull out the powder sampling device and open the cover plate 4 to take out the sample;

[0060] S6, Clean the powder sampling device.

[0061] In step S2, the sampling body 5 is vertically inserted into the sample material. In step S3, the pull rod 3 is pulled upward by external power (manual or electric), causing the cover plate 4 to expose the groove 7. Due to its own interaction, the powder material flows into the groove 7. The sampling amount of powder sample is controlled by the scale value on the pull rod 3, where the sampling weight = cross-sectional area of ​​the groove 7 on the sampling body 5 × height of the pull rod 3 × powder density. The slot 2 can fix the pull rod 3 to prevent it from falling, thus stabilizing the degree. When the required weight is reached, the pull rod 3 is restored, and the cover plate 4 is closed, thus separating the required sample from the powder in the ton bag. In step S5, the sampling body 5 is pulled out, and the cover plate 4 is opened to obtain the sample of the required location and weight. The grooves 7 at the top, middle, and bottom positions of the tube are independent of each other. By changing the number of grooves 7 on the tube, it is possible to collect samples from multiple different positions simultaneously with one tube. In step S6, since the surface of the sampling body 5 is smooth and there are no excessive screws or bends in the parts in contact with the material, the residual material on the surface can be easily wiped clean with a cloth, chamois, etc.

[0062] The powder sampling device and sampling method of the present invention solve the following problems:

[0063] 1. It is difficult to obtain samples from ton bags or deep within the silo;

[0064] 2. Only a single point can be sampled at a time, which is not representative; multiple samplings are required for multiple points.

[0065] 3. Sampling relies entirely on employees' intuition, making it difficult to control the sampling amount and resulting in material waste.

[0066] 4. The sampling subject 5 is not easy to clean after sampling.

[0067] This gives the present invention the following advantages:

[0068] 1. The plug is designed in an arc shape, which makes it easier and less strenuous to insert into the ton bag, and it will not puncture the ton bag like the pointed sampling body 5, which would cause material leakage.

[0069] 2. During the manufacturing process of the sampling body 5, multi-point and multi-part sampling can be achieved by adjusting the number and position of the grooves 7;

[0070] 3. Quantitative sampling can be achieved through the scale on lever 3;

[0071] 4. The sampling body 5 has a simple cylindrical structure, and the surface of the part in contact with the sample is smooth, making it easy to clean and less prone to material adhesion.

[0072] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0073] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0074] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A positive electrode material powder sampling device, suitable for ton-level silos / ton bags, characterized in that, The positive electrode material powder sampling device includes a columnar sampling body (5), and the side of the sampling body (5) is provided with a groove (7). The sampling body (5) is a solid columnar structure, and the groove (7) is a concave structure carved out on the solid columnar structure; The sampling body (5) has an insertion end (6) and a gripping end (1) arranged opposite to each other, and a slot (2) is provided on the outer side of the gripping end (1). A cover plate (4) adapted to the groove (7) is provided outside the groove (7). A pull rod (3) that can be inserted and removed from the slot (2) is provided at the end of the cover plate (4). The pull rod (3) and the cover plate (4) form a plug plate. Each plug plate can be pushed and pulled independently in the slot (2). The groove (7), slot (2), cover plate (4) and pull rod (3) are provided in a one-to-one correspondence, and the distance between the multiple grooves (7) and the insertion end (6) is different; the multiple grooves (7) are independent of each other; The cathode material powder sampling device also includes a second positioning mechanism; The second positioning mechanism includes a limiting protrusion (9) disposed on the surface of the sampling body (5), and a limiting ring (10) that can slide between the insertion end and the limiting protrusion (9). The insertion plate can pass through the gap between the limiting ring (10) and the sampling body (5), and the limiting protrusion (9) can block and limit the limiting ring (10); or The second positioning mechanism includes a first guide groove (11) provided on the sampling body (5) for guiding the cover plate (4) and a second guide groove (12) for guiding the pull rod (3).

2. The cathode material powder sampling device according to claim 1, characterized in that, The pull rod (3) is integrally formed with the cover plate (4), and the head of the insertion end (6) is arc-shaped.

3. The cathode material powder sampling device according to claim 1, characterized in that, The slot (2) is provided with a first positioning mechanism, which is configured to fix the pull rod (3) to the sampling body (5) with a specified insertion length.

4. The cathode material powder sampling device according to claim 3, characterized in that, The first positioning mechanism is a buckle, which includes a buckle plate and a top screw. The buckle plate can cover the slot of the buckle groove (2). The buckle plate has a threaded hole. The top screw can be screwed into or out of the threaded hole to fasten the pull rod (3) or loosen the pull rod (3).

5. The cathode material powder sampling device according to claim 3, characterized in that, The slot (2) is provided with a mechanical power source (8) for driving the pull rod (3) to slide.

6. The cathode material powder sampling device according to claim 1, characterized in that, The sampling body (5) is a solid structure with a smooth outer surface, and the contact surface between the cover plate (4) and the sampling body (5) is a smooth surface.

7. The cathode material powder sampling device according to claim 1, characterized in that, The positive electrode material powder sampling device also includes a quantitative mechanism, which is a scale line set on the pull rod (3) and / or a sensor built into the groove (7).

8. A sampling method, characterized in that, The sampling method uses the cathode material powder sampling device according to any one of claims 1-7, and includes the following steps: S1, the cover plate (4) is pushed by the pull rod (3) to cover the groove (7); S2, insert the sampling body (5) into the sampling material, and make the groove (7) submerged; S3, by pulling the cover plate (4) with the pull rod (3) to expose at least a part of the groove (7) for sampling; S4, by pushing the cover plate (4) with the pull rod (3) to close the groove (7), the sampling is completed; S5, pull out the positive electrode material powder sampling device, open the cover plate (4) and take out the sample; S6, Clean the positive electrode material powder sampling device.

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