Long-handle fixed-amount non-stick sampling spoon

Abstract

The utility model provides a long-handle fixed-quantity non-stick sampling spoon, which belongs to the field of sampling devices, and comprises a U-shaped elastic spoon handle, two ends of the elastic spoon handle are respectively provided with a holding arm, the end part of each holding arm is provided with a spoon body, the opening ends of the two spoon bodies are oppositely arranged, and the opening ends of the two spoon bodies can be tightly attached; limiting blocks are arranged on the sides, used for facing the other holding arm, of the two holding arms, and when the opening ends of the two spoon bodies are tightly attached, the limiting blocks on the two holding arms abut against each other. The high-pressure microwave digestion furnace has the beneficial effects that one-time quantitative grabbing of a sample to be detected can be realized through the matching of the two limiting blocks and the matching of the two spoon bodies, so that the feeding process of the high-pressure microwave digestion furnace is simplified, the labor intensity of workers is reduced, and the sampling efficiency of the workers is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sampling devices, specifically relating to a long-handled, fixed-measurement, non-stick sampling spoon. Background Technology

[0002] Currently, in multiple disciplines such as food science, textile technology, and geology, the use of high-pressure microwave digestion furnaces to efficiently and rapidly digest samples for testing, thereby obtaining the content of various elements in the samples, has become a crucial technical means.

[0003] Furthermore, when processing granular and powdered samples using a high-pressure microwave digestion furnace, the common feeding method is as follows: 1. Take a clean sheet of sample paper and fold it into a groove shape. The width of the groove should be slightly larger than the diameter of the digestion tube used to hold the sample in the high-pressure microwave digestion furnace cavity, so as to facilitate feeding the paper strip into the digestion tube; 2. Carefully place the sample into the folded sample paper groove, ensuring that the sample will not slip off the sample paper; 3. Place the sample paper containing the sample into a balance scale or other weighing equipment for weighing, and add or remove the sample according to the weighing result until the weight of the sample is within the specified range; 4. Align the sample paper groove containing the sample with the opening of the digestion tube, and then gently feed it into the bottom of the digestion tube; 5. When the paper strip is completely fed into the digestion tube and touches the bottom of the digestion tube, gently pull it upwards, ensuring that the sample remains at the bottom of the digestion tube; 6. Weigh the used sample paper. 7.3 Subtract the weight of 6 weighings of sample paper from the weight of the sample to be tested to obtain the actual weight of the sample to be tested. 8. Add a fixed amount of nitric acid or other digestive agent, and place it in a microwave oven to digest the sample into a clear and transparent solution, which can be used for precise analysis of trace metal elements by atomic absorption spectrophotometer, atomic fluorescence spectrophotometer, or inductively coupled plasma atomic emission spectrometer.

[0004] However, since the required error margin for high-pressure microwave digestion furnaces is mostly at the milligram level, and the digestion tube length is approximately 30 cm, operators need to repeatedly add, remove, and weigh the sample to adjust its mass, ensuring the error is within 0.0050 grams. Furthermore, it's difficult to completely place the sample at the bottom of the digestion tube. Therefore, this traditional feeding method presents numerous challenges in the feeding process of existing high-pressure microwave digestion furnaces. Specifically, in many cases, although the initial mass of the sample on the weighing paper meets the specified standard, when it is transferred to the digestion tube, some sample adheres to the weighing paper, causing the actual amount of sample added to the digestion tube to exceed the allowable error range, thus affecting the accuracy of the experimental results. Even more seriously, when the sample amounts are inconsistent, there is a risk of explosion during digestion due to incomplete digestion of multiple samples or even the high pressure within individual digestion tubes. Furthermore, if some of the sample to be tested is attached to the inner wall of the digestive tract, the part of the digestive tract wall with the sample attached will absorb heat and generate high temperature when microwaved. Especially when the digestive tract is made of materials such as polytetrafluoroethylene, the wall of the digestive tract will melt and become thinner under high temperature, which will lead to a risk of explosion due to the decrease in pressure resistance. Utility Model Content

[0005] The purpose of this invention is to address the problems of cumbersome operation, large errors, and numerous safety hazards in the feeding process of existing high-pressure microwave digestion furnaces. This invention proposes and designs a long-handled, fixed-volume, non-stick sampling spoon with quantitative sampling capabilities to solve these problems, thereby improving the sampling efficiency of workers, simplifying the feeding process of the high-pressure microwave digestion furnace, and enhancing the overall safety of the high-pressure microwave digestion operation.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: a long-handled fixed-measurement non-stick sampling spoon, which includes a U-shaped elastic spoon handle, a gripping arm at each end of the elastic spoon handle, a spoon body at the end of each gripping arm, the open ends of the two spoon bodies are arranged opposite each other, and the open ends of the two spoon bodies can fit tightly together; a limiting block is provided on one side of each gripping arm to face the other gripping arm, and when the open ends of the two spoon bodies fit tightly together, the limiting blocks on the two gripping arms abut against each other. When using this invention for sampling and feeding, the appropriate spoon body is first installed on the elastic handle according to the required testing quality. Then, the invention is inserted into the sample chamber with the opening open, ensuring both spoon bodies are fully submerged within the sample. The elastic handle is then pressed inwards until the limiting blocks at the two gripping arms abut against each other, closing the two spoon bodies and completing the quantitative sampling. Next, the long-handled, fixed-volume, non-stick sampling spoon is removed from the sample chamber and inserted into the digestion tube of the high-pressure microwave digestion furnace until the spoon body is at the bottom of the digestion tube. The two gripping arms are then released, releasing the sample at the bottom of the digestion tube, thus completing the quantitative feeding process. Compared to existing feeding methods, this invention achieves a single quantitative grasp of the sample through the cooperation of the two limiting blocks and the two spoon bodies, simplifying the feeding process of the high-pressure microwave digestion furnace, reducing the labor intensity of workers, improving sampling efficiency, and preventing the sample from adhering to the tube wall, thus avoiding potential safety hazards.

[0007] Furthermore, the grip arm is detachably connected to the spoon body, making it easy for staff to replace the spoon body with the corresponding size.

[0008] Furthermore, the end of the grip arm that connects to the spoon body is provided with a connecting protrusion, and a mounting hole is passed through the middle of the connecting protrusion; the end of the spoon body that connects to the grip arm is provided with a connecting post, and a mounting groove is provided at the end of the connecting post, with a connecting hole passing through the groove wall; when the connecting protrusion and the mounting groove are inserted, the connecting hole and the mounting hole are aligned, and a fixing pin is inserted at both the connecting hole and the mounting hole to achieve a detachable connection between the grip arm and the spoon body.

[0009] Alternatively, the end of the grip arm that connects to the spoon body is provided with a mounting groove, and the groove wall of the mounting groove has a connecting hole through it; the end of the spoon body that connects to the grip arm is provided with a connecting post, the end of the connecting post is provided with a connecting protrusion, and the middle of the connecting protrusion has a mounting hole through it; when the connecting protrusion is inserted into the mounting groove, the connecting hole and the mounting hole are aligned, and a fixing pin is inserted into both the connecting hole and the mounting hole to achieve a detachable connection between the grip arm and the spoon body.

[0010] Alternatively, the flexible spoon handle and the spoon body can be molded as a single piece.

[0011] Furthermore, the elastic spoon handle is made of elastic steel, and the outer wall of the elastic spoon handle is coated with a non-stick coating. This non-stick coating can be made of common materials such as polytetrafluoroethylene (PTFE) to ensure that it will not stick to the sample during the sampling process, thereby ensuring sampling accuracy and preventing some of the sample from spilling onto the digestive tract wall as the long-handled fixed-volume non-stick sampling spoon moves.

[0012] Furthermore, the outer wall of the spoon body is coated with a non-stick coating, or the spoon body is made of a non-stick material, such as commonly available modified polytetrafluoroethylene (PTFE), to ensure that no part of the sample to be tested adheres to the inner surface of the spoon body during the release of the sample to be tested, and no part of the sample to be tested adheres to the outer wall of the spoon body during the retrieval of the sample to be tested, thereby ensuring sampling accuracy and preventing some of the sample to be tested from spilling onto the wall of the digestive tract as the long-handled fixed-volume non-stick sampling spoon moves.

[0013] Furthermore, the depth of the inner cavity at the bottom of the spoon body decreases sequentially in the direction away from the elastic handle, and the width of the inner cavity at the bottom of the spoon body decreases sequentially in the direction away from the elastic handle. The lower edge of the inner cavity of the spoon body is rounded to ensure that the sample to be tested can slide out completely from the spoon body, thereby avoiding sample accumulation during the feeding process.

[0014] Furthermore, the outer wall of the spoon body is convex, and the highest point of the convex surface is located in the middle of the spoon body, so as to ensure that the shoulder of the spoon body will not accumulate samples during the process of picking up and putting down materials.

[0015] As can be seen from the above technical solutions, this utility model has the following advantages:

[0016] 1. Compared with the existing feeding method, this utility model can ensure that the two spoons will not compact the sample to be inspected during the clamping process by cooperating with two limiting blocks and two spoons, thereby ensuring that the sample to be inspected can be quantitatively grasped at one time, thus simplifying the feeding process of the high-pressure microwave digestion furnace, reducing the labor intensity of the staff, and improving the sampling efficiency of the staff.

[0017] 2. This utility model can ensure that no part of the sample to be tested will adhere to the inner surface of the spoon body during the release of the sample to be tested, and no part of the sample to be tested will adhere to the outer wall of the spoon body and the elastic handle during the clamping of the sample to be tested, thereby ensuring the sampling accuracy and preventing part of the sample to be tested from spilling onto the wall of the digestive tract as the long-handled fixed-volume non-stick sampling spoon moves.

[0018] 3. This utility model can ensure that the sample to be tested can slide out completely inside the spoon by designing the inner cavity of the spoon as a concave surface and setting rounded corners on the edge of the inner wall of the spoon.

[0019] 4. This utility model can ensure that the sample will not accumulate on the shoulder of the spoon body during the process of picking up and putting down the material by designing the outer wall of the spoon body as a convex surface with the highest point located in the middle of the spoon body;

[0020] 5. The elastic spoon handle in this utility model is designed to be longer, so that it can reach the bottom of the digestive tube and prevent the sample from sticking to the tube wall. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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.

[0022] Figure 1 This is a schematic diagram of the elastic spoon handle in Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the spoon body in Embodiment 1 of this utility model.

[0024] In the diagram: 1. Holding arm; 2. Limiting block; 3. Connecting protrusion; 4. Mounting groove; 5. Connecting post; 6. Spoon body; 7. Connecting hole. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] like Figure 1 , Figure 2 As shown, this embodiment provides a first type of long-handled fixed-measurement non-stick sampling spoon, which includes a U-shaped elastic spoon handle made of elastic steel material and coated with a non-stick coating on the outer wall. Furthermore, each end of the elastic spoon handle is provided with a gripping arm 1, and a spoon body 6 is detachably mounted at the end of each gripping arm 1.

[0028] Specifically, in this embodiment, a connecting protrusion 3 is provided at one end of the gripping arm 1 for connecting to the spoon body 6, and a mounting hole is provided through the middle of the connecting protrusion 3; a connecting post 5 is provided at one end of the spoon body 6 for connecting to the gripping arm 1, the outer cylindrical surface of the connecting post 5 is tangent to the open end of the spoon body 6, and a mounting groove 4 is provided at the end of the connecting post 5. The mounting groove 4 is inserted into the connecting protrusion 3, and a connecting hole 7 is provided through the groove wall of the mounting groove 4. The connecting hole 7 is aligned with the mounting hole, and a fixing pin is inserted into both the connecting hole 7 and the mounting hole to achieve a detachable connection between the gripping arm 1 and the spoon body 6 through the fixing pin.

[0029] Furthermore, in this embodiment, the open ends of the two spoon bodies 6 are arranged opposite each other, allowing them to fit tightly together. Each gripping arm 1 has a limiting block 2 on one side facing the other gripping arm 1, ensuring that the limiting blocks 2 on the two gripping arms 1 abut against each other when the open ends of the two spoon bodies 6 are tightly fitted. Thus, when using this invention for sampling and feeding operations, the cooperation of the two limiting blocks 2 and the two spoon bodies 6 ensures that the two spoon bodies 6 will not compact the sample during the clamping process, thereby ensuring accurate one-time quantitative grasping of the sample.

[0030] Furthermore, as a preferred embodiment, the outer wall of the spoon body 6 can be coated with a non-stick coating, or the entire spoon body 6 can be designed to be made of a non-stick material. This ensures that no part of the sample to be tested will adhere to the inner surface of the spoon body 6 during the release of the sample to be tested, and no part of the sample to be tested will adhere to the outer wall of the spoon body 6 during the retrieval of the sample to be tested. This ensures sampling accuracy and prevents some of the sample to be tested from spilling onto the digestive tract wall as the long-handled fixed-volume non-stick sampling spoon moves. Meanwhile, in this embodiment, the inner cavity of the spoon body 6 can be designed as a concave surface, and the depth of the inner cavity at the bottom of the spoon body 6 can be gradually reduced along the direction away from the elastic spoon handle. The lower edge of the inner cavity of the spoon body 6 is provided with rounded corners to ensure that the sample to be tested inside the spoon body 6 can slide out completely, thereby avoiding sample accumulation in the inner cavity of the spoon body 6 during the feeding process; and the outer wall of the spoon body 6 can be designed as a convex surface, with the highest point of the convex surface located in the middle of the spoon body 6, to ensure that sample accumulation does not occur at the shoulder of the spoon body 6 during the feeding and dispensing process.

[0031] Based on this, when using this embodiment for sampling and feeding operations, the corresponding specification of the spoon body 6 can be installed on the elastic spoon handle according to the test quality. Then, the present invention is inserted into the sample library with the opening, ensuring that the two spoon bodies 6 are completely located in the sample. Subsequently, the elastic spoon handle is pressed inward until the limiting blocks 2 at the two holding arms 1 abut against each other, thus closing the two spoon bodies 6 and completing the quantitative sampling action. Next, the long-handled fixed-quantity non-stick sampling spoon can be taken out from the sample library and inserted into the digestion tube of the high-pressure microwave digestion furnace until the spoon body 6 is located at the bottom of the digestion tube. Then, the two holding arms 1 are released, and the sample is released at the bottom of the digestion tube, thus completing the entire quantitative feeding action. Moreover, compared with the existing feeding methods, this embodiment 1 can simplify the feeding process of the high-pressure microwave digestion furnace, reduce the labor intensity of the staff, and improve the sampling efficiency of the staff.

[0032] Example 2

[0033] This second embodiment provides a second type of long-handled fixed-volume non-stick sampling spoon. Compared with the first embodiment, the difference in this second embodiment is that the cooperation structure between the gripping arm 1 and the spoon body 6 is the opposite of the cooperation structure in the first embodiment.

[0034] Specifically, in this second embodiment, a mounting groove 4 is provided on one end of the grip arm 1 for connecting with the spoon body 6, and a connecting hole 7 is provided through the groove wall of the mounting groove 4; a connecting post 5 is provided on one end of the spoon body 6 for connecting with the grip arm 1, the outer cylindrical surface of the connecting post 5 is tangent to the open end of the spoon body 6, and a connecting protrusion 3 is provided at the end of the connecting post 5. The connecting protrusion 3 is inserted into the mounting groove 4, and a mounting hole is provided through the middle of the connecting protrusion 3. The mounting hole and the connecting hole 7 are aligned and a fixing pin is inserted together, and the detachable connection between the grip arm 1 and the spoon body 6 is realized through the fixing pin.

[0035] Example 3

[0036] This embodiment three provides a third type of long-handled fixed-measurement non-stick sampling spoon. Compared with embodiment one, the difference in embodiment three is that the grip arm 1 and the spoon body 6 are integrally molded parts.

[0037] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A long-handled, fixed-measurement, non-stick sampling spoon, comprising a U-shaped elastic handle, with a gripping arm (1) at each end of the elastic handle, and a spoon body (6) at the end of each gripping arm (1), the open ends of the two spoon bodies (6) being arranged opposite each other; characterized in that, The open ends of the two spoon bodies (6) can fit together tightly; each of the two gripping arms (1) is provided with a limiting block (2) on one side facing the other gripping arm (1), and when the open ends of the two spoon bodies (6) fit together tightly, the limiting blocks (2) on the two gripping arms (1) abut against each other.

2. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The grip arm (1) is detachably connected to the spoon body (6).

3. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 2, characterized in that, A connecting protrusion (3) is provided on one end of the grip arm (1) for connecting to the spoon body (6), and a mounting hole is provided through the middle of the connecting protrusion (3); a connecting post (5) is provided on one end of the spoon body (6) for connecting to the grip arm (1), and a mounting groove (4) is provided at the end of the connecting post (5), and a connecting hole (7) is provided through the groove wall of the mounting groove (4); when the connecting protrusion (3) is inserted into the mounting groove (4), the connecting hole (7) is aligned with the mounting hole, and a fixing pin is inserted into both the connecting hole (7) and the mounting hole.

4. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 2, characterized in that, The end of the grip arm (1) used to connect with the spoon body (6) is provided with a mounting groove (4), and the groove wall of the mounting groove (4) is provided with a connecting hole (7); the end of the spoon body (6) used to connect with the grip arm (1) is provided with a connecting post (5), the end of the connecting post (5) is provided with a connecting protrusion (3), and the middle of the connecting protrusion (3) is provided with a mounting hole; when the connecting protrusion (3) is inserted into the mounting groove (4), the connecting hole (7) is aligned with the mounting hole, and the connecting hole (7) and the mounting hole are both inserted with a fixing pin.

5. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The elastic spoon handle and the spoon body (6) are integrally molded parts.

6. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The flexible spoon handle is made of flexible steel and has a non-stick coating on its outer wall.

7. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The outer wall of the spoon body (6) is coated with a non-stick coating, or the spoon body (6) is made of a non-stick material.

8. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The depth of the inner cavity at the bottom of the spoon body (6) decreases sequentially in the direction away from the elastic handle, the width of the inner cavity at the bottom of the spoon body (6) decreases sequentially in the direction away from the elastic handle, and the lower edge of the inner cavity of the spoon body (6) is provided with rounded corners.

9. The long-handled, fixed-measurement, non-stick sampling spoon according to claim 1, characterized in that, The outer wall of the spoon body (6) is convex, and the highest point of the convex surface is located in the middle of the spoon body (6).

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