Fiber sampling device

Abstract

A fiber sampling device comprises a sample container and a sampler, and the sampler is arranged on the periphery of the sample container to rotate around the sample container; the surface of the sample container comprises a fiber placement area and a fibrillation area; when the sampler passes through the fiber placing area, a certain amount of sample fibers can be cut from the sampler; and when the sampler passes through the fibrillation area, the fibrillation area plays a fibrillation role on the sample fibers on the sampler. According to the utility model, fibers are stripped and dispersed to obtain a cellulose sample with higher uniformity and better separation effect, the efficiency and the effect are obviously improved compared with the previous random manual sampling, the residual solid impurities and the like in the fibers can be effectively removed, the device is suitable for sampling acetified fibers, and the development and the industrialization of pulp raw materials are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical product detection, relates to the detection technology of fiber products, and particularly relates to a fiber sampling device. Background Art

[0002] Acetylated cellulose is the main raw material for producing cellulose acetate products, and common commercial acetylated cellulose is in a roll shape. Since the cellulose acetylation reaction is a heterogeneous reaction, in order to improve the reaction activity of cellulose, it is necessary to first pre-crush and grind the rolled cellulose to make it into fluffy fibers, so as to facilitate the penetration of reaction reagents and improve the reaction activity of cellulose. In the initial stage of pulp fiber development, it is necessary to sample and analyze the ground fibers and evaluate their reaction performance. Since cellulose is in a fluffy state and cross-knotted together after grinding, in the existing detection technology, the actual sampling process completely depends on manual random sampling. The disadvantages are that it is difficult to ensure the sampling uniformity, and the samples are prone to tearing and knotting. Moreover, the grinding effects of different types of fibers are inconsistent, and the sampling completely depends on the proficiency of the operator. Therefore, the existing sampling method is not scientific and not representative.

[0003] Compared with traditional hardwood pulp, cotton pulp fibers have the characteristics of long fiber length, thick wall, high crystallinity, etc. The number-average length of hardwood pulp fibers is between 0.74 - 0.76 mm, and the average fiber width is between 15.8 - 16.3 μm. The morphological characteristics of cotton pulp fibers are significantly different. The number-average length of fibers is between 2.45 - 3.75 mm, and the average fiber width is between 18.3 - 19.6 μm. Cotton fibers are more likely to crosslink after grinding than wood fibers and are difficult to sample and analyze. Therefore, developing a sampling device suitable for acetylated fibers is of great significance for the development and industrialization of pulp raw materials. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fiber sampling device to overcome the above-mentioned disadvantages existing in the prior art.

[0005] To achieve the above utility model purpose, the utility model adopts the following technical scheme:

[0006] A fiber sampling device includes a sample container and a sampler. The sampler is arranged on the outer periphery of the sample container to rotate around the sample container. The surface of the sample container includes a fiber placement area and a fiber splitting and brooming area. When the sampler passes through the fiber placement area, it can intercept a certain amount of sample fibers from it. When the sampler passes through the fiber splitting and brooming area, the fiber splitting and brooming area plays a role in splitting and brooming the sample fibers on the sampler.

[0007] Optionally, one end of the sample container is closed and connected to a hinge point fixed at the axis of the closed end; the sampler spans across the outer periphery of the sample container, with a spacing from the outer peripheral surface of the sample container, and one end is rotatably connected to the hinge point to rotate around the outer periphery of the sample container;

[0008] A number of evenly distributed sampling holes are provided on the fiber placement area so that sample fibers can extend outwards from the sample container;

[0009] A number of vertically and evenly distributed sampling pins are provided on the sampler, and a certain amount of fibers are intercepted from the sample fibers extending out of the sampling holes when passing through the fiber placement area;

[0010] A number of needles perpendicular to the surface of the sample container and evenly distributed are provided in the fiber splitting and fibrillation area. When the sampler passes through the fiber splitting and fibrillation area, the needles play a role in splitting and fibrillation of the sample fibers intercepted on the sampler;

[0011] The sampling pins and the needles are respectively fixed at appropriate positions on the sampling piece and the fiber splitting and fibrillation area, so that when the two meet, the sampling pins and the needles are respectively in the intersecting area and can pass through the gap between each other.

[0012] Optionally, the sample container is a sample cylinder with one end closed. The circumferential rotation angle range corresponding to the fiber placement area on the cylinder surface is 60 - 270 degrees, preferably 90 - 180 degrees, more preferably 120 - 150 degrees; the circumferential rotation angle range corresponding to the fiber splitting and fibrillation area on the cylinder surface is 90 - 300 degrees, preferably 180 - 270 degrees, more preferably 210 - 240 degrees.

[0013] Optionally, the sampler includes a handle, a sampling rod and a sampling piece. The sampling rod includes a sampling rod main body, a first bending part and a second bending part. The sampling rod main body spans across the outer periphery of the sample container and maintains an appropriate spacing from the outer peripheral surface of the sample container; the first bending part is rotatably connected to the hinge point, and the second bending part is connected to the handle; a sampling piece groove for placing the sampling piece is provided on the surface of the sampling rod main body facing the sample container, and the handle can drive the sampling rod to rotate around the hinge point so that the sampling piece rotates around the outer periphery of the sample container.

[0014] Optionally, on the cylindrical surface of the sample cylinder, a cylinder groove recessed into the interior of the cylinder is provided along the axial direction for replacing the sampling piece.

[0015] Optionally, a number of vertically and evenly distributed detachable sampling pins are provided on the sampling piece.

[0016] Optionally, the spacing between two adjacent sampling pins is 1.0 - 5.0 mm.

[0017] Optionally, it further includes a bracket, which includes a base and a support rod vertically fixed on the base. The upper part of the support rod is bent horizontally to set and fixedly connect a hinge point.

[0018] Optionally, a number of uniformly distributed round holes are provided in the fiber placement area.

[0019] Optionally, the diameter of the round hole is 1.0 - 2.0 cm, and the distance between the centers of two adjacent circles is 2.2 - 3.0 cm.

[0020] Optionally, the cross-sectional shape of the sampling nail includes a circle, a rhombus, a rectangle, a wedge shape, an ellipse; and / or, the longitudinal section of the sampling nail is a columnar shape with a uniform diameter up and down or a conical shape that gradually increases from top to bottom.

[0021] Optionally, the length range of the sampling nail is 0.5 - 1.5 cm, the length range of the needle prick is 0.5 - 1.5 cm. When the sampler passes through the fiber splitting and fibrillation area, the overlapping length of the sampling nail and the needle prick is 0.5 - 1.4 cm.

[0022] The utility model has the following beneficial effects: By rotating the hand-operated sampler counterclockwise and passing through the fiber placement area, cellulose samples are evenly intercepted. Then, it continues to pass through the fiber splitting and fibrillation area counterclockwise. The fibers intercepted on the sampling piece are evenly distributed on the sampling piece after fiber splitting and fibrillation. Then, the sampling piece is taken off, and the fibers are peeled off to obtain a cellulose sample with higher uniformity and better separation effect. Compared with the previous random manual sampling, the efficiency and effect are significantly improved, and it can also effectively remove residual solid impurities in the fibers, etc. Description of the Drawings

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the fiber sampling device of the utility model.

[0024] Figure 2 It is a cross-sectional schematic diagram of the cylinder in an embodiment of the fiber sampling device of the utility model.

[0025] Figure 3 It is a schematic diagram of the cylinder surface of the cylinder in an embodiment of the fiber sampling device of the utility model laid flat.

[0026] Figure 4 It is a schematic diagram of the sampling piece in an embodiment of the fiber sampling device of the utility model. Detailed Embodiments

[0027] A fiber sampling device, the main device is cylindrical, and there is a hand-operated sampler around the cylinder. The sampling piece of the sampler can be randomly replaced according to the length and other characteristics of the fiber, and the distance between the sampling piece and the cylinder can be adjusted as needed. The cylinder body is hollow, and 1 / 3 of the surface area of the cylinder is the fiber placement area, and the placement area presents uniformly distributed round holes with a diameter of about 1.0 - 2.0 cm and the distance between adjacent center points is about 2.2 - 3.0 cm. The remaining 2 / 3 of the area is the fiber splitting and fibrillation area. The distance between the sampling piece on the hand-operated sampler and the cylinder can be adjusted as needed, and the range is 0.1 - 1.0 cm. The nails on the sampling piece are evenly distributed with a spacing of 1.0 - 5.0 mm. The hand-operated sampler rotates counterclockwise, evenly intercepts the cellulose sample after passing through the fiber placement area, and then continues to rotate counterclockwise through the splitting and fibrillation area. The fibers intercepted on the sampling piece are evenly distributed on the sampling piece after splitting and fibrillation, and the large particle impurities originally in the cellulose are intercepted by the splitting and fibrillation area at this time, ensuring that the sampled cellulose is free of impurities, non-crosslinked, and has high consistency.

[0028] It can be replaced according to factors such as the characteristics and length of the fiber to be sampled. The distance between the sampling piece and the sample cylinder can be adjusted as needed. At the same time, the spacing of the sampling nails can be adjusted by replacing the sampling piece, so that different levels and precisions of sampling can be achieved for different types of fibers.

[0029] The following further illustrates the present utility model in conjunction with the embodiments of the attached drawings.

[0030] Please refer to Figures 1 to 4 , a fiber sampling device, including a sample cylinder 1 and a sampler. One end of the sample cylinder 1 is closed and connected to a hinge point 3 fixed at the axis of the closed end; the sampler includes a handle 21 and a sampling rod 22. The sampling rod 22 includes a sampling rod main body 220, a first bending part 221 and a second bending part 222. The sampling rod main body 220 straddles the outer periphery of the sample cylinder 1 and maintains an appropriate distance from the outer peripheral surface of the sample cylinder 1; the first bending part 221 is rotatably connected to the hinge point 3, and the second bending part 222 is connected to the handle 21; a sampling piece groove 223 for placing a sampling piece 4 is provided on the surface of the sampling rod main body 220 facing the sample cylinder 1. By shaking the handle 21, the sampling rod 22 can be driven to rotate around the hinge point 3, that is, the sampling piece 4 rotates around the outer periphery of the sample cylinder 1.

[0031] The fiber sampling device further includes a bracket. The bracket includes a base 51 and a support rod 52 vertically fixed on the base. The upper part of the support rod 52 bends horizontally and is provided with a connection to fix the hinge point 3.

[0032] The cylindrical surface of the sample cylinder 1 is divided into two parts: a fiber placement area 11 and a fiber splitting and fibrillation area 12; the circumferential angle corresponding to the fiber placement area 11 on the cylindrical surface is 120 degrees, and the circumferential angle corresponding to the fiber splitting and fibrillation area 12 on the cylindrical surface is 240 degrees. In other words, 1 / 3 of the surface area of the sample cylinder 1 is the fiber placement area 11, and the remaining 2 / 3 of the area is the fiber splitting and fibrillation area 12. The circumferential angle range corresponding to the fiber placement area 11 on the cylindrical surface is 60 - 270 degrees, preferably 90 - 180 degrees, more preferably 120 - 150 degrees; the circumferential angle range corresponding to the fiber splitting and fibrillation area 12 on the cylindrical surface is 90 - 300 degrees, preferably 180 - 270 degrees, more preferably 210 - 240 degrees.

[0033] A number of uniformly distributed round holes 111 are provided on the fiber placement area 11. The diameter of the round holes 111 is about 1.0 - 2.0 cm, and the distance between adjacent centers is about 2.2 - 3.0 cm. The fiber splitting and fibrillation area 12 is provided with a number of needles 121 perpendicular to the cylindrical surface and uniformly distributed, and the needles 121 can play a role in splitting and fibrillation of the fibers.

[0034] The internal space of the sample cylinder 1 is used to store the fibers to be sampled, and some of the fibers to be sampled can protrude outward from a number of round holes 111 on the fiber placement area 11.

[0035] A number of sampling nails 41 perpendicular and uniformly distributed are provided on the sampling piece 4, and the distance between any two adjacent sampling nails 41 is 1 - 5 mm.

[0036] Counterclockwise shaking of the handle 21 can drive the sampling rod 22 to rotate counterclockwise around the outer circumference of the sample cylinder 1. When the sampling piece 4 placed on the sampling rod 22 passes above the fiber placement area 11, a number of sampling nails 41 perpendicular and uniformly distributed on the sampling piece 4 will uniformly intercept a certain amount of fibers from the fibers to be sampled that protrude from the round holes 111.

[0037] The sampling rod 22 continues to rotate counterclockwise and passes through the fiber splitting and fibrillation area 12. The fibers intercepted on the sampling piece 4 are evenly distributed on the sampling piece 4 after being split and fibrillated by the needles evenly distributed in this area. When designing, ensure that the sampling nails 41 and the needles 121 are fixed at appropriate positions on the sampling piece 4 and the fiber splitting and fibrillation area 12 respectively, so that when they meet, the sampling nails 41 and the needles 121 are respectively in the intersecting area and can pass through each other's gaps without touching, similar to the situation where the ten fingers of two hands cross and meet but do not touch.

[0038] On the cylindrical surface of the sample cylinder 1, there is a cylinder groove 13 recessed into the interior of the cylinder along the axial direction; when the sampling piece groove 221 rotates to the position where the cylinder groove 13 is located, the sampling piece 4 with the intercepted and fibrillated fibers can be withdrawn from the sampling piece groove 221, and a new sampling piece 4 can be replaced to perform the next fiber sampling operation.

[0039] The sampling piece 4 can be replaced according to factors such as the characteristics and length of the fibers to be sampled. The distance between the sampling piece 4 and the sample cylinder 1 can be adjusted as needed. The distance between the sampling rod 22 and the sample cylinder 1 is 0.1 - 1.0 cm. The length of the sampling nail 41 is 0.5 - 1.5 cm, the length of the acupuncture needle 121 is 0.5 - 1.5 cm, and the overlapping length of the sampling nail 41 and the acupuncture needle 121 is 0.5 - 1.4 cm. In one embodiment, the distance between the sampling piece 4 and the sample cylinder 1 is achieved by adjusting the length of the sampling nail 41 on the sampling piece 4.

[0040] The cross-sectional shapes of the sampling nail 41 and the acupuncture needle 121 can be selected according to needs, including circular, rhombic, rectangular, wedge-shaped, oval, etc.; from the perspective of the longitudinal section, the sampling nail 41 and the acupuncture needle 121 can be columnar with a consistent diameter from top to bottom, or conical that gradually increases from top to bottom.

[0041] The sampling nail 41 on the sampling piece 4 is detachable and replaceable. By replacing the sampling nails 41 with different lengths, the distance between the sampling piece 4 and the sample cylinder 1 can be adjusted. According to different types and characteristics of cellulose samples, different types of sampling nails 41 are replaced. Or, different standard sampling pieces 4 with different parameters of the sampling nails 41 can be manufactured and selected according to different situations without disassembling and replacing the sampling nails 41, further improving the sampling efficiency.

[0042] The advantage of sampling with the sampling device of the present utility model compared to the traditional manual sampling method is that after the fibers are fibrillated, they can be fully separated and do not knot with each other, and the separation effect is better, which is beneficial to further removing impurities. The efficiency and effect are significantly improved compared to the previous random manual sampling.

[0043] It should be noted that for the content not detailed in the present utility model, those skilled in the art can select and adopt it in the prior art according to the description of the purpose, technical solution, and effect of the present utility model in combination with the specific situation without creative labor, which will not be elaborated here.

[0044] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the present utility model. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A fiber sampling device, characterized in that: It includes a sample container and a sampler, wherein the sampler is arranged on the periphery of the sample container to rotate around the sample container; the surface of the sample container includes a fiber placement area and a fiber separation and brooming area; when the sampler passes through the fiber placement area, a certain amount of sample fiber can be intercepted therefrom; when the sampler passes through the fiber separation and brooming area, the fiber separation and brooming area has a fiber separation and brooming effect on the sample fiber on the sampler.

2. The fiber sampling device according to claim 1, characterized in that: One end of the sample container is closed and connected and fixed to a hinge point at the axis of the closed end; the sampler spans the periphery of the sample container, is spaced apart from the periphery of the sample container, and one end is rotatably connected to the hinge point to rotate around the periphery of the sample container; The fiber placement area is provided with a plurality of evenly distributed sampling holes to allow the sample fibers to extend outward from the sample container; The sampler is provided with a plurality of vertically and evenly distributed sampling pins, which cut a certain amount of fibers from the sample fibers extending from the sampling holes when passing through the fiber placement area; The fiber separation and brooming area is provided with a plurality of needles perpendicular to the surface of the sample container and evenly distributed. When the sampler passes through the fiber separation and brooming area, the needles play a role in fiber separation and brooming the sample fibers intercepted from the sampler. The sampling nails and needles are fixed at appropriate positions on the sampling sheet and the silk-splitting area respectively, so that when the two meet, the sampling nails and needles are respectively in the mutually intersecting areas and can pass through the gaps between them.

3. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle corresponding to the fiber placement area on the cylinder surface ranges from 60 to 270 degrees.

4. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle corresponding to the fiber placement area on the cylinder surface ranges from 90 to 180 degrees.

5. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle corresponding to the fiber placement area on the cylinder surface ranges from 120 to 150 degrees.

6. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle range of the filament separation and brooming area on the cylinder surface is 90-300 degrees.

7. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle range corresponding to the filament separation and brooming area on the cylinder surface is 180-270 degrees.

8. The fiber sampling device according to claim 1, characterized in that: The sample container is a sample cylinder with one end closed, and the circumferential rotation angle range of the filament separation and brooming area on the cylinder surface is 210-240 degrees.

9. The fiber sampling device according to claim 1, characterized in that: The sampler comprises a handle, a sampling rod and a sampling sheet, wherein the sampling rod comprises a sampling rod body, a first bending portion and a second bending portion, wherein the sampling rod body spans the periphery of the sample container and maintains an appropriate spacing from the periphery of the sample container; the first bending portion is rotatably connected to a hinge point, and the second bending portion is connected to the handle; a sampling sheet groove is provided on a side of the sampling rod body facing the sample container for placing the sampling sheet, and the handle can drive the sampling rod to rotate around the hinge point so that the sampling sheet rotates around the periphery of the sample container.

10. The fiber sampling device according to claim 3, characterized in that: A cylindrical groove recessed into the interior of the cylinder is arranged along the axial direction on the cylindrical surface of the sample cylinder to facilitate replacement of the sampling piece.

11. The fiber sampling device according to claim 9, characterized in that: The sampling sheet is provided with a plurality of vertically and evenly distributed detachable sampling nails.

12. The fiber sampling device according to claim 11, characterized in that: The distance between two adjacent sampling nails is 1.0-5.0mm.

13. The fiber sampling device according to claim 2, characterized in that: It also includes a bracket, which includes a base and a support rod vertically fixed on the base. The upper part of the support rod is bent in the horizontal direction and is provided with a connecting and fixing hinge point.

14. The fiber sampling device according to claim 1, characterized in that: The fiber placement area is provided with a plurality of evenly distributed circular holes.

15. The fiber sampling device according to claim 14, characterized in that: The diameter of the circular hole is 1.0-2.0 cm, and the distance between the centers of two adjacent circles is 2.2-3.0 cm.

16. The fiber sampling device according to claim 2, characterized in that: The cross-sectional shape of the sampling nail includes circular, prismatic, rectangular, wedge-shaped, and elliptical; and / or the longitudinal section of the sampling nail is a columnar shape with a uniform diameter from top to bottom or a cone shape that gradually increases from top to bottom.

17. The fiber sampling device according to claim 2, characterized in that: The length of the sampling nail is 0.5-1.5 cm, the length of the needle puncture is 0.5-1.5 cm, and when the sampler passes through the wire-splitting zone, the overlapping length of the sampling nail and the needle puncture is 0.5-1.4 cm.

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