Powder sampler

Abstract

The utility model discloses a powder sampler which comprises a hollow pipe and a sampling rod, the hollow pipe comprises two layers, an inner-layer hollow pipe is rotatably connected in an outer-layer hollow pipe, and the sampling rod is rotatably connected in the inner-layer hollow pipe; the sampling rod is of a solid structure, and a plurality of sampling grooves for quantitative sampling are formed in the sampling rod; corresponding outer sampling holes are formed in the positions, at the same height as the sampling groove, of the outer-layer hollow pipe, a plurality of inner sampling holes used for fixed-point sampling are formed in the positions, at the same height as the sampling groove, of the inner-layer hollow pipe, and the inner sampling holes are spirally formed in the axial direction of the inner-layer hollow pipe. The sampling rod is of a solid structure and is provided with sampling grooves at intervals, so that quantitative sampling at different positions is realized; the inner sampling holes axially formed in the inner hollow layer at intervals are matched with the sampling grooves, so that quantitative sampling at a specific position is realized; the sampler is made of rubber, so that samples are prevented from being polluted due to long-term abrasion; the tip and the thread of the outer hollow pipe are beneficial for the sampler to go deep into a sample.

Description

Technical Field

[0001] The utility model relates to a sampling device, in particular to a powder sampler. Background Art

[0002] In the industrial production of lithium iron phosphate, the positive electrode material for lithium-ion batteries, powder samplers are used to obtain samples of the raw materials, iron phosphate and lithium carbonate, to check whether the product quality meets standards. To monitor the uniformity of the powder, powder samples at different depths need to be taken for testing. Secondly, the amount of powder required for testing is not large. The sampling rod of the currently used powder samplers has a hollow structure. The powder extracted by the sampler is mixed together, making it impossible to achieve fixed-point and quantitative sampling, and the powder uniformity cannot be obtained. At the same time, the sampling volume exceeds the test requirements, resulting in waste of raw materials. In addition, the sampler is made of metal. Long-term or frequent rotation during rotary sampling causes mechanical wear of the sampler, and debris is mixed into the powder. The introduced metal debris is magnetic, affecting the quality, stability, and consistency of the sample. At the same time, the sample sticks to the inner wall of the sampling rod and is difficult to remove. Utility Model Content

[0003] Purpose of the utility model: The purpose of the utility model is to provide a powder sampler in order to achieve fixed-point and quantitative sampling and avoid the introduction of impurities.

[0004] Technical solution: The powder sampler described in the utility model includes a hollow tube and a sampling rod. The hollow tube includes two layers, the inner hollow tube is rotatably connected to the outer hollow tube, and the sampling rod is rotatably connected to the inner hollow tube; the sampling rod is a solid structure, and a plurality of sampling slots for quantitative sampling are provided on it; the outer hollow tube has corresponding outer sampling holes at the same height position as the sampling slots, and the inner hollow tube has a plurality of inner sampling holes for fixed-point sampling at the same height position as the sampling slots, and the inner sampling holes are spirally arranged in the axial direction of the inner hollow tube; the sampling rod is higher than the inner hollow tube, and the inner hollow tube is higher than the outer hollow tube.

[0005] Furthermore, the inner sampling hole is spirally arranged in the axial direction of the inner hollow tube. By screwing the inner hollow tube and the sampling rod, the sampling groove, the inner sampling hole and the outer sampling hole at a specific position are overlapped, and the powder at this position is collected for testing.

[0006] Furthermore, a limit block is provided on the inner wall of the outer hollow tube for limiting the rotation position of the inner hollow tube. When in use, the inner hollow tube is rotated to determine the overlap of the inner sampling hole and the outer sampling hole at a specific depth according to the limit block. The sampling groove is rotated again to overlap the inner and outer sampling holes to collect powder at this position for testing.

[0007] Furthermore, the powder sampler is made of organic non-metallic material to avoid long-term wear and contamination of samples, which may affect the accuracy of the test results.

[0008] Furthermore, the outer sampling hole and the inner sampling hole have the same opening size, and the sampling slot opening size is smaller than or equal to the opening size of the outer sampling hole and the inner sampling hole, so as to ensure that the sample can fill the sampling slot and ensure the accuracy of quantitative sampling.

[0009] Furthermore, the inner corners of the sampling slot are chamfered to facilitate complete pouring of the sample out of the sampling slot after sampling. The opening sizes of the sampling slots at different positions can be set to be the same or different to meet different sampling requirements.

[0010] Furthermore, the outer hollow tube is provided with a pointed head at the bottom and a thread on the outer wall, which helps to insert the sampler deep into the powder, saving time and effort.

[0011] Furthermore, a first handle is provided on the top of the outer hollow tube, a second handle is provided on the top of the inner hollow tube, and a third handle is provided on the top of the sampling rod, which is convenient for screwing to the required position for sampling during use.

[0012] Beneficial effects: Compared with the existing technology, the utility model has the following advantages: 1. The sampling rod has a solid structure with sampling grooves arranged at intervals on it to achieve quantitative sampling at different positions; 2. The inner sampling holes arranged axially at intervals on the inner hollow layer cooperate with the sampling grooves to achieve quantitative sampling at specific positions; 3. The sampler is made of rubber to avoid long-term wear and contamination of the sample; 4. The sampling hole is larger than or equal to the sampling groove to ensure that the sample fills the sampling groove and ensure the accuracy of quantitative sampling; 5. The pointed head and thread setting of the outer hollow tube are conducive to the sampler to penetrate into the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 for Figure 1 Detailed view of point A in the middle;

[0015] Figure 3 It is a front view of the outer hollow tube 1, the inner hollow tube 2 and the sampling rod 3 of the present invention. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0017] Example 1

[0018] like Figure 1The powder sampler shown is made of organic fertilizer metal material, such as rubber. The inner hollow tube 2 is rotatably connected to the outer hollow tube 1, and the sampling rod 3 is rotatably connected to the inner hollow tube 2. The top of the sampling rod 3 is provided with a third handle 6, and the sampling rod 3 is higher than the inner hollow tube 2. The top of the inner hollow tube 2 is provided with a second handle 5, and the inner hollow tube 2 is higher than the outer hollow tube 1. The outer wall of the outer hollow tube 1 is provided with a thread 7, the top is provided with a first handle 4, and the bottom is provided with a pointed head 8; the inner wall of the outer hollow tube 1 is provided with three limit blocks for limiting the rotation direction of the inner hollow tube 2.

[0019] The sampling rod 3 is a solid structure. Figure 2 As shown, three sampling slots 31 for quantitative sampling are provided. The outer hollow tube 1 has corresponding external sampling holes 11 at the same height as the sampling slots 31. The inner hollow tube 2 also has three internal sampling holes 21 for fixed-point sampling at the same height as the sampling slots 31. The internal sampling holes 21 are spirally arranged axially along the inner hollow tube 2. The external sampling holes 11, internal sampling holes 21, and sampling slots 31 are all of the same size. The inner corners of the sampling slots 31 are chamfered, and the openings of the three sampling slots 31 are fixed and identical.

[0020] Example 2

[0021] Different from the embodiment 1, the opening of the sampling slot 31 is slightly smaller than the openings of the outer sampling hole 11 and the inner sampling hole 21 , and the opening sizes of the three sampling slots 31 are set to different sizes.

[0022] When in use, hold the first handle 4 in one hand and the second handle 5 in the other hand to screw until the outer hollow tube 1 reaches the limit block at the desired position so that the outer sampling hole 11 and the inner sampling hole 21 are completely staggered. Insert the bottom end of the sampler into the powder. The outer wall of the outer hollow tube 1 is provided with a thread 7 and a pointed tip 8 at the bottom to facilitate the insertion of the sampler into the depth of the powder. Screw the second handle 5 to make the inner sampling hole 21 of a specific test depth coincide with the outer sampling hole 11, and then screw the third handle 6 to make the sampling slot 3 1 also coincides with the inner sampling hole 21 and the outer sampling hole 11, shake the sampler to allow the sample powder to pass through the inner sampling hole 21 and the outer sampling hole 11 and enter the sampling slot 31; after the sample powder enters the sampling slot 31, screw the third handle 6 again to stagger the sampling slot 31 with the inner sampling hole 21 and the outer sampling hole 11, take out the sampler, screw the third handle 6 again to coincide with the sampling slot 31 with the inner sampling hole 21 and the outer sampling hole 11, and pour the sample powder out of the sampling slot 31 for testing.

Claims

1. A powder sampler comprising a hollow tube and a sampling rod, characterized in that: The hollow tube comprises two layers, an inner hollow tube (2) is rotatably connected to an outer hollow tube (1), and a sampling rod (3) is rotatably connected to the inner hollow tube (2); the sampling rod (3) is a solid structure, and a plurality of sampling slots (31) for quantitative sampling are provided on the sampling rod; the outer hollow tube (1) is provided with corresponding outer sampling holes (11) at the same height position as the sampling slots (31), and the inner hollow tube (2) is provided with a plurality of inner sampling holes (21) for fixed-point sampling at the same height position as the sampling slots (31), and the inner sampling holes (21) are spirally arranged in the axial direction of the inner hollow tube (2); the sampling rod (3) is higher than the inner hollow tube (2), and the inner hollow tube (2) is higher than the outer hollow tube (1).

2. The powder sampler according to claim 1, characterized in that A limiting block for limiting the rotation position of the inner hollow tube (2) is provided on the inner wall of the outer hollow tube (1).

3. The powder sampler according to claim 1, characterized in that The powder sampler is made of organic non-metallic material.

4. The powder sampler according to claim 1, characterized in that The outer sampling hole (11) and the inner sampling hole (21) have the same opening size.

5. The powder sampler according to claim 1, characterized in that The size of the opening of the sampling slot (31) is smaller than or equal to the size of the openings of the outer sampling hole (11) and the inner sampling hole (21).

6. The powder sampler according to claim 1 or 5, characterized in that: The inner corner of the sampling groove (31) is chamfered.

7. The powder sampler according to claim 1, characterized in that The bottom of the outer hollow tube (1) is provided with a pointed head (8), and the outer wall is provided with a thread (7).

8. The powder sampler according to claim 1, characterized in that The top of the outer hollow tube (1) is provided with a first handle (4), the top of the inner hollow tube (2) is provided with a second handle (5), and the top of the sampling rod (3) is provided with a third handle (6).

Images