Sampler and sampling device

Abstract

This utility model discloses a sampler and a sampling device. The sampler includes: a sampling shaft having a plurality of longitudinally spaced sampling slots; and an outer sleeve coaxially fitted onto the sampling shaft and restricting only the longitudinal movement of the sampling shaft; wherein the outer sleeve has a plurality of slots that match the plurality of sampling slots; the sampling shaft is configured to rotate relative to the outer sleeve between positions where the plurality of sampling slots coincide with the plurality of slots and between positions where the plurality of sampling slots and the plurality of slots are completely offset. The sampling device includes a sampler and a sampling transition section. The advantages of this utility model are: it can achieve effective multi-point sample acquisition and can isolate the extracted material sample from the outside environment, effectively reducing the risk of sample contamination.

Description

Technical Field

[0001] This utility model relates to the field of material sampling technology. Specifically, it relates to a sampler and a sampling device having such a sampler. Background Technology

[0002] When inspecting materials, sampling is required. Existing samplers typically insert the sampler into the material, and the sample is then used directly for testing. This sampling process inevitably leads to material spillage and contamination of the sample through contact with the external environment. Therefore, there is a need to improve existing samplers. Utility Model Content

[0003] The purpose of this invention is to solve or at least partially alleviate the above-mentioned problems by providing a novel sampler and a sampling device having such a sampler.

[0004] This utility model provides a sampler, which includes a sampling shaft having a plurality of longitudinally spaced sampling slots; and an outer sleeve coaxially sleeved on the sampling shaft and only restricting the longitudinal movement of the sampling shaft; wherein the outer sleeve has a plurality of slots that match the plurality of sampling slots; the sampling shaft is configured to rotate relative to the outer sleeve between positions where the plurality of sampling slots coincide with the plurality of slots and between positions where the plurality of sampling slots and the plurality of slots are completely offset.

[0005] By configuring the sampler to include two parts, a sampling shaft and an outer sleeve, and by sealing the sampling groove on the sampling shaft with the outer sleeve, the sample can be essentially isolated from the outside world, preventing contamination and effectively preventing material spillage.

[0006] Furthermore, the sampler also includes a push rod, which includes an outer cylinder and an inner rod that can reciprocate within the outer cylinder. One end of the inner rod is provided with a handle and the other end is fixedly connected to the longitudinal upper end of the sampling shaft. The stroke of the inner rod is equal to the sampling depth of the sampler.

[0007] Furthermore, a positioner is provided on the handle, and a stopper is provided on the outer cylinder. The positioner and the stopper work together to limit the rotation of the inner rod.

[0008] The sampling depth can be limited by the push rod, and the positioner and stop can accurately limit the position of the sampling shaft inside the outer sleeve, so that the sampling slot can be fully opened or fully closed to prevent material from falling and to essentially prevent the sample from coming into contact with the outside.

[0009] Preferably, the sampling cells have baffles at the bottom of their openings. The baffles allow the sampling cells to collect sufficient material and prevent material from falling out to some extent.

[0010] Preferably, there are three sampling slots. This arrangement allows the sampler of this invention to collect samples from the material at three longitudinal positions, thereby enabling a more comprehensive inspection of the material.

[0011] This utility model also provides a sampling device, which includes any of the above-mentioned samplers. It also includes a sampling transition section, which is a hollow body including a sealed cavity; the sampler is longitudinally movable and passes through the sampling transition section, and the size of the sealed cavity is set to accommodate multiple sampling slots of the sampling shaft therein.

[0012] The sampling transition section allows the retrieved sample to remain within its sealed chamber, thus completely isolating the sample from the outside environment and eliminating the possibility of contamination before the sample is sent for testing.

[0013] Preferably, the sampling transition section has a double-lip labyrinth seal at the junction with the sampler to ensure the sealing of the sampling transition section.

[0014] Preferably, the sampling transition section is equipped with an inlet valve and an exhaust valve. Through the inlet and exhaust valves, protective gas can be injected into or replaced in the sealed cavity of the sampling transition section, thereby providing further special atmospheric protection for special material samples.

[0015] Preferably, the lower end of the sampling transition section is provided with a detachable end plate. Further, the sampling device also includes a clamp that adaptably connects the end plate of the sampling transition section to the opening of the material tank.

[0016] The detachable end plate allows for easy removal of the sample from the sampling transition section and can be used with clamps to adapt to the opening size of different material containers, while ensuring the sealing of the sampling process.

[0017] The advantages of this utility model are:

[0018] The sampler of this invention can basically isolate the sample from the outside world and preserve the sample to the maximum extent.

[0019] The sampling device of this invention allows for sampling under a protective atmosphere, tailored to the requirements of different material samples. During the sampling process, it effectively isolates the material from external contact, eliminating the risk of contamination. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1An exemplary sampler according to the present invention is schematically shown, having a cut-out portion A to show the sampling axis of the sampler.

[0022] Figure 2 for Figure 1 A side sectional view of the sampling slot of the sampler in the sampler.

[0023] Figure 3 An exemplary sampling device according to the present invention is schematically shown, having a partially cut-out portion B, wherein the sampling device has been mounted on a material tank.

[0024] Figure 4 It shows Figure 3 A cross-sectional view of the sampling transition section of an exemplary sampling device. Detailed Implementation

[0025] 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 relevant invention and not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings. Moreover, some components have been exaggerated in order to clearly describe the invention. These do not constitute any limitation on the scope of protection of the present invention.

[0026] This invention provides a sampler comprising a sampling shaft and an outer sleeve. The sampling shaft has multiple longitudinally spaced sampling slots for multi-point sampling at different depths. The outer sleeve is coaxially fitted onto the sampling shaft and only restricts the longitudinal movement of the sampling shaft. The outer sleeve has multiple slots that match the multiple sampling slots. That is, the number of slots is the same as the number of sampling slots, the slots are positioned in the same longitudinal direction, and the shape of the slots is the same as the opening size and shape of the sampling slots. The sampling shaft is configured to rotate relative to the outer sleeve between a position where the multiple sampling slots and the multiple slots completely coincide and a position where the multiple sampling slots and the multiple slots are completely offset. In other words, during sampling, the sampling slots can be fully open; after sampling, by rotating the sampling shaft, the sampling slots can be closed through the outer sleeve, thereby allowing the sampling slots to retain more sample and essentially maintaining the isolation of the sample from the outside environment when the sampler is removed from the material.

[0027] In a preferred embodiment, the sampler further includes a push rod. The push rod includes an outer cylinder and an inner rod that reciprocates within the outer cylinder. One end of the inner rod has a handle, and the other end is fixedly connected to the upper longitudinal end of the sampling shaft. By pushing or pulling the handle, the inner rod can reciprocate, thereby driving the sampling shaft to extend into and out of the material to complete the sampling process. The stroke of the inner rod is equal to the sampling depth of the sampler. That is, the stroke of the inner rod defines the sampling depth.

[0028] Reference Figure 1 The figure schematically illustrates an exemplary sampler 1 according to the present invention, with a cutaway portion A to show the arrangement of the sampler's sampling shaft 2 and outer sleeve 3. As shown, the sampler 1 includes a sampling shaft 2 and an outer sleeve 3. The sampling shaft 2 is provided with a plurality of sampling slots 4, and the outer sleeve 3 is provided with a plurality of slots that match the sampling slots 4. In this example, there are three sampling slots 4, thereby sampling materials at three different depths. More or fewer sampling slots can be provided as needed.

[0029] exist Figure 1 As shown, the sampling groove 4 coincides with the groove opening. Furthermore, after rotating the sampling shaft 2 by a certain angle, such as 90 degrees, the sampling groove 4 and the groove opening are completely offset, thus completely sealing the sampling groove 4 (not shown) with the rest of the outer sleeve 3. The rotation angle of the inner rod is not limited, as long as the sampling groove is completely sealed.

[0030] As shown in section A of the figure, the outer sleeve 3 is coaxially fitted onto the sampling shaft 2. The sampling shaft 2 can rotate within the outer sleeve 3, but cannot move longitudinally within it. This can be achieved, for example, through the structural design of the outer sleeve 3 shown in the figure. The internal length of the outer sleeve 3 is approximately the same as the longitudinal length of the sampling shaft 2, while the inner diameter of the outer sleeve 3 is slightly larger than the outer diameter of the sampling shaft 2. This allows the sampling shaft to rotate within the outer sleeve but not move longitudinally. In other words, the difference between the inner diameter of the outer sleeve 3 and the outer diameter of the sampling shaft 2 is set such that the sampling shaft can rotate relative to the outer sleeve, but the material sample is almost prevented from falling between the sampling shaft and the outer sleeve. The end of the outer sleeve 3 that extends into the material can be formed into a cone shape to facilitate the sampler's insertion into the material for sampling.

[0031] The sampler 1 also includes a push rod 5. The push rod 5 includes an outer cylinder 6 and an inner rod 7 that reciprocates within the outer cylinder 6. One end of the inner rod 7 is provided with a handle 8 for easy pushing or rotating. The other end of the inner rod 7 extends from the outer cylinder 6 and is fixedly connected to the upper longitudinal end of the sampling shaft 2, for example, via a threaded connection. In other words, the inner rod 7 of the push rod 5 is equivalent to an extension of the sampling shaft 2. Before sampling, the inner rod 7 is in its uppermost longitudinal position (e.g., ...). Figure 1 (as shown in the diagram). The initial position of the inner rod 7 in the rotational direction can be preset, for example, setting the position of the handle parallel to the page in the diagram as the initial position of the inner rod 7. In the initial position, the sampling slot 4 is fully open. By pushing the handle 8 downward, the inner rod 7 (along with the sampling shaft 2 and the outer sleeve 3) moves longitudinally downward. When the handle 8 abuts against the outer sleeve 6, the sampler 1 reaches its sampling depth. That is, the stroke of the push rod 5 is equal to the sampling depth of the sampler 1. Depending on the requirements, push rods with different strokes can be selected to adjust the sampling depth.

[0032] A positioner 9 can be provided on the handle 8 of the push rod 5, and a stopper 10 is correspondingly provided on the outer cylinder 6. The stopper 10 is positioned to interact with the positioner 9, for example, on the outer circumferential surface near the top of the outer cylinder 6. The cooperating positioner 9 and stopper 10 cause the inner rod 7 (correspondingly the sampling shaft 2) to rotate a certain angle in the rotational direction, and then stop rotating because the positioner 9 is blocked by the stopper 10. This allows the sampling shaft 2 to rotate between positions where the multiple sampling slots are completely aligned with the multiple slot openings and positions where the multiple sampling slots are completely offset from the multiple slot openings. This positioning mechanism ensures that the outer cylinder can completely close the sampling slots when the sampler is removed from the material.

[0033] like Figure 2 As shown, preferably, the sampling slot 4 may have a baffle 11 at the lower part of its opening, which can form a spoon-like structure, thereby ensuring that a certain amount of sample is taken.

[0034] This application also provides a sampling device including the aforementioned sampler. The sampling device further includes a sampling transition section. The sampling transition section is a hollow body including a sealed cavity. The shape of the hollow body is not limited, but preferably it can be, for example, a cuboid or a cylinder. The sampler passes through the sampling transition section. The sampler can move longitudinally relative to the sampling transition section. The size of the sealed cavity of the sampling transition section is at least configured to accommodate multiple sampling slots of the sampling shaft within it. Therefore, the obtained sample is not directly exposed to the outside environment, thereby preventing sample contamination.

[0035] Figure 3 An exemplary sampling device 12 according to the present invention is schematically shown, wherein the sampling device 12 is mounted on a material tank. As shown, the sampling device 10 includes a sampler 1 and a sampling transition section 13. As shown in the cutaway portion B in the figure, the sampler 1 passes through the sampling transition section 13.

[0036] Figure 4 It shows Figure 3 A cross-sectional view of the sampling transition section 13 of an exemplary sampling device is shown. As shown, the sampling transition section 13 is a hollow body with a sealed cavity; in this example, it is a hollow cylinder. The sealed cavity of the sampling transition section 13 is sized to accommodate multiple sampling slots (three in the figure) of the sampling shaft. The position shown is the ready state with the sampler 1 not inserted into the material. At this time, the sampler 1 is held in place by the double-lip labyrinth seal 18 of the sampling transition section 13, and a small portion of the outer sleeve 3 protrudes from the lower end of the sampling transition section 13, for example, only the conical tip of the outer sleeve is exposed. The sampling transition section is provided with a double-lip labyrinth seal 18 at the joint with the sampler, which serves both as a seal and as a positioning function for the sampler 1.

[0037] The sampling transition section 13 may be equipped with an inlet valve 14 and an exhaust valve 15 at its upper end, for example. The placement of the inlet valve 14 and exhaust valve 15 is not limited. The inlet valve 14 can be connected to a protective gas source (not shown), thereby injecting the required protective gas into the sealed chamber of the sampling transition section 13. The protective gas can be, for example, nitrogen, argon, etc., to protect the extracted material sample from reaction with elements in the air, thus preventing external contamination. The protective gas can also be replaced by the exhaust valve 15 to suit different requirements for different materials. Alternatively, when a protective gas is not required, the extracted sample can simply be kept in the sampling transition section to prevent contact with the outside environment.

[0038] The lower end of the sampling transition section 13 may be provided with a detachable end plate 16, preferably a quick-detachable end plate, for example, connected by a snap-fit, so that it can be adapted to the opening of different material tanks, and the sample can be easily removed for testing after sampling.

[0039] The sampling device 12 of this application may further include a plurality of clamps 17 that adaptably connect the end plates 16 of the sampling transition section to the openings of different material tanks, as shown in the figure. The clamps 17 can simultaneously adapt to the end plates 16 of the sampling transition section and the openings of the material tanks, thereby maintaining a sealed state.

[0040] When sampling the material in the material tank, first, the clamp 17 is sealed and installed on the tank opening. At this time, the tank opening is sealed by a valve, and the sampling slot 4 is completely contained within the sealed chamber of the sampling transition section 13, which has been filled with protective gas as needed. Next, the sampling device 12 is sealed and installed on the clamp 17 via the end plate 16, as follows... Figure 3 As shown. At this time, the inner rod 7 of the push rod is in the predetermined position, and the sampling slot 4 is in a fully open state. Then, open the tank valve of the material tank to open the tank opening. Next, push the handle 8 vertically downward so that the inner rod 7 reaches its lowest vertical position, thereby allowing the sampling shaft 2 and the outer sleeve 3 to extend into the material tank for sampling. Next, rotate the handle towards the stop 10 until the positioner 9 abuts against the stop 10, thereby closing the sampling slot 4. Then, pull the inner rod 7 upward to its highest vertical position, and the sampling shaft 2 and the outer sleeve retract into the sampling transition part 13. Finally, close the tank valve, remove the sampling device from the clamp 17, and then remove the clamp from the tank opening. This completes the sampling process.

[0041] The sampling device of this invention features convenient installation and connection, with the connection device adjustable to suit different material tank sizes. The sampling transition section is equipped with an inlet valve and an exhaust valve, allowing for the use of different gases such as nitrogen or argon to purify the interior, ensuring the entire sampling process is conducted under a protective atmosphere. The connection between the two ends of the sampling transition section and the sampler utilizes double-lip labyrinth seals, effectively isolating the internal gas of the sampling transition section from external gases. The lower end of the sampling transition section is equipped with a quick-release end plate for easy sample removal. Removal can be performed directly in the air, or the entire sampling device can be placed within a dedicated atmosphere-protected enclosure before removing the end plate to retrieve the sample.

[0042] This invention enables multi-point, multi-level sampling, allowing direct sampling to a certain depth, ensuring the accuracy and reliability of the sampling data. By adding a sampling transition section and introducing gas protection, it solves the problem of sampling special products under a protected atmosphere. It also prevents contamination of some special materials.

[0043] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A sampler characterized by, include: The sampling shaft has multiple sampling slots spaced longitudinally. and An outer sleeve is coaxially fitted onto the sampling shaft and only restricts the longitudinal movement of the sampling shaft; The outer sleeve has multiple slots that match the multiple sampling slots; the sampling shaft is configured to rotate relative to the outer sleeve between positions where the multiple sampling slots coincide with the multiple slots and between positions where the multiple sampling slots are completely offset from the multiple slots.

2. The sampler of claim 1, wherein, It also includes a push rod, which includes an outer cylinder and an inner rod that can reciprocate within the outer cylinder. One end of the inner rod is provided with a handle and the other end is fixedly connected to the upper longitudinal end of the sampling shaft. The stroke of the inner rod is equal to the sampling depth of the sampler.

3. The sampler of claim 2, wherein, The handle is equipped with a positioner, and the outer cylinder is equipped with a stopper. The positioner and the stopper work together to limit the rotation of the inner rod.

4. The sampler of claim 1, wherein, The plurality of sampling slots have baffles at the bottom of their openings.

5. The sampler of claim 1, wherein, The number of sampling slots is three.

6. A sampling device, characterized by The sampler includes any one of claims 1 to 5, and a sampling transition portion, wherein the sampling transition portion is a hollow body including a sealed cavity; The sampler is longitudinally movable and passes through the sampling transition section, and the size of the sealed cavity is set to accommodate multiple sampling slots of the sampling shaft.

7. The sampling device of claim 6, wherein, The sampling transition section is a double-lip labyrinth seal at the junction with the sampler.

8. The sampling device of claim 6, wherein, The sampling transition section is equipped with an air inlet valve and an air outlet valve.

9. The sampling device of claim 6, wherein, The lower end of the sampling transition section is provided with a detachable end plate.

10. The sampling device of claim 9, wherein, It also includes a clamp that adaptably connects the end plate of the sampling transition section to the opening of the material tank.

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