Sample preparation device for measuring disc for total radioactivity in water

Abstract

The utility model discloses an underwater total radioactivity measuring disc sample preparation device which comprises a sample disc loading plate, a vibration bottom plate, a vibration machine stand column, a vibration generator, a fixing device, a sample disc, a shell and a drying device. The vibration bottom plate is mounted at the bottom end in the shell; the sample disc loading plate is installed on the vibration bottom plate through the vibration machine stand column. A slot matched with the sample disc is formed in the sample disc loading plate; the fixing devices are installed on the two sides of the open groove. The vibration generator is mounted at the bottom end of the middle of the sample loading plate; the sample disc is placed on the open slot of the sample disc loading plate through the fixing device; the drying device is arranged above the sample disc loading plate; sample powder and homogeneous substances can be uniformly distributed on the sample disc through the vibration generator, measurement errors caused by uneven samples due to manual uniform spreading can be effectively avoided, the homogeneous substances can be quickly evaporated by the drying device after the sample powder is uniformly spread, and the working efficiency and the accuracy of subsequent sample detection are integrally and effectively improved.

Description

A sample preparation device for measuring total radioactivity in water Technical Field

[0001] This utility model relates to the field of sample preparation equipment technology, specifically to a sample preparation device for a total radioactivity measuring disc in water. Background Technology

[0002] Total radioactivity in water refers to the total number of natural and artificial radionuclides contained in a sample taken from a water body under specific conditions. These radionuclides include, but are not limited to, alpha and beta decay radionuclides, and can be radioactive substances dissolved in or suspended in water. In the fields of environmental monitoring and nuclear safety, the measurement of total radioactivity in water is an important task. It involves determining the alpha, beta, and gamma radioactivity activities in water, as well as the concentration of specific radionuclides such as thorium, radium, and strontium-90. These measurement results are of great significance for assessing water quality, ensuring water safety, and protecting the ecological environment. During the measurement process, sample homogenization is a crucial step that directly affects the accuracy and reliability of the measurement results.

[0003] Traditional sample preparation procedures involve placing the powdered sample in the recess of a sample pan, adding a homogenizing agent (such as alcohol), and manually spreading the powder using a tool to ensure the sample evenly covers the bottom of the pan. The pan is then placed in an oven to dry, allowing the sample to adhere evenly to the bottom. After preparation, radioactivity measurements can be performed. However, in actual experiments, manual sample spreading can easily lead to uneven distribution, affecting measurement results. Furthermore, the sample preparation and drying process requires sample transfer, increasing workload and the risk of contamination. The repetitive and labor-intensive nature of manual operations, especially repeated preparations, can cause fatigue, affecting the accuracy of operator movements and sample uniformity, ultimately resulting in low experimental efficiency and reduced accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a water total radioactivity measurement disc sample preparation device that ensures uniform sample distribution, effectively improves work efficiency and the accuracy of subsequent sample testing, and is easy to operate, in order to solve the technical problem of low experimental efficiency and reduced accuracy of results caused by uneven manual sample preparation.

[0005] A sample preparation device for measuring total radioactivity in water includes a sample tray loading plate, a vibrating base plate, a vibrator column, a vibration generator, a fixing device, a sample tray, a housing, and a drying device. The vibrating base plate is fixedly installed inside the bottom of the housing. The sample tray loading plate is mounted on the vibrating base plate via the vibrator column. The sample tray loading plate has several slots that match the sample tray. The fixing device is installed on both sides of the slots. The vibration generator is fixedly installed at the bottom center of the sample loading plate. The sample tray is fixedly placed on the slots of the sample tray loading plate via the fixing device. The drying device is located above the sample tray loading plate. The vibration generator and drying device are started via an external power supply and controller. The vibration generator is an ultrasonic generator. The powder sample is placed in the recess of the sample tray, and a homogenizing substance, such as alcohol or deionized water, is added to help the sample be evenly distributed and ensure the accuracy of the measurement results. The sample tray with the homogenizing substance is placed in the slot of the sample tray loading plate and fixed by the fixing devices on both sides. The ultrasonic generator is turned on, causing the sample tray loading plate to vibrate, so that the sample powder and homogenizing substance are vibrated and spread evenly on the sample tray. After the sample powder is vibrated and spread evenly, the ultrasonic generator is turned off and the drying device is turned on to evaporate the homogenizing substance in the sample tray and dry the sample powder. The dried sample is evenly adsorbed on the bottom of the sample tray. Then the sample tray is removed and placed in the detection device for testing.

[0006] Furthermore, the top of the vibrator column is equipped with a telescopic rod and a support spring; the bottom end of the telescopic rod is connected to the top end of the vibrator column, and the top end is connected to the sample tray loading plate; the support spring is sleeved on the telescopic rod. The sample tray loading plate is connected to the vibrator column through the telescopic rods at its four bottom corners for support. When the vibration generator operates and generates vibration, the support springs on the outside of the telescopic rods can dampen the vibration, preventing vibration from hitting the vibrating base plate and causing the entire device to vibrate. At the same time, it keeps the sample tray loading plate stable during the vibration process driven by the vibration generator and evenly transmits the vibration to the sample tray, ensuring that the sample receives a uniform and stable vibration force.

[0007] Furthermore, the fixing device includes a connecting rod, a limiting spring, and a pressure plate; the connecting rod is fixed to the sample tray loading plate and has a limiting block at its top; one end of the limiting spring and the pressure plate is sleeved on the connecting rod; the top end of the limiting spring is fixedly connected to the limiting block, and the bottom end is connected to one end of the pressure plate; the other end of the pressure plate presses down on the sample tray. The connecting rod is fixed to the sample tray loading plate and prevents the assembly from falling off through the limiting block at its top; the limiting spring is sleeved on the connecting rod, with its top end connected to the limiting block and its bottom end connected to one end of the pressure plate. When placing the sample tray, the pressure plate can be manually lifted to retract the limiting spring. After placing the sample tray into the slot of the sample tray loading plate, the hand is released, the spring returns to its original position, and the pressure plate is pushed to press down on the sample tray. This effectively prevents the sample tray from shifting or jumping during vibration, ensuring that the powder sample can be evenly distributed, while protecting the sample tray from damage that may be caused by severe vibration.

[0008] Furthermore, the outer casing is equipped with a cabinet door; the cabinet door is installed on the front side of the outer casing. The cabinet door allows operators to easily open and close the outer casing. After the sample tray is placed in the sample tray loading plate, the outer casing can be sealed through the cabinet door, facilitating the drying device to dry the sample powder.

[0009] Furthermore, the drying device includes an electric hot air blower and a partition; the partition is located at the upper inner end of the outer shell; the electric hot air blower is fixedly installed on the outer side of the outer shell, with its output end extending into the partition inside the shell; the partition has several small holes. When the electric hot air blower is activated, it generates a hot airflow, which is evenly distributed into the inner space of the outer shell through the small holes in the partition. This not only prevents the airflow from affecting the uniform distribution of the sample powder but also disperses the airflow, ensuring that the airflow evenly contacts each sample tray and accelerates the evaporation of the homogeneous material.

[0010] The working principle of this utility model is as follows:

[0011] Open the cabinet door, manually lift the pressure plate to retract the limit spring, causing the pressure plate to detach from the sample tray. Remove the sample tray from the inside, place the powder sample in the recess of the sample tray, add alcohol as a homogenizing agent, manually lift the pressure plate again to retract the limit spring, place the sample tray into the slot of the sample tray loading plate, release your hand, the spring will return to its original position, push the pressure plate to press the sample tray, close the cabinet door, turn on the ultrasonic generator to drive the sample tray loading plate to vibrate, thereby driving the sample tray to vibrate, so that the sample powder and homogenizing agent are vibrated and spread evenly on the sample tray. Turn off the vibration generator, turn on the electric hot air fan of the drying device to generate hot airflow, the hot airflow is evenly dispersed through several small holes on the partition, contacts the sample tray, evaporates the homogenizing agent in the sample tray, and dries the sample powder.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a vibration generator to evenly distribute sample powder and homogeneous material on the sample tray, which can effectively avoid measurement errors caused by uneven sample distribution due to manual spreading. The drying device can quickly evaporate the homogeneous material after spreading the sample powder, so that the sample powder remains dry and is evenly adsorbed on the sample tray. Overall, it effectively improves work efficiency and the accuracy of subsequent sample testing.

[0014] 2. This utility model can effectively absorb and buffer vibration through telescopic rods and support springs, ensuring the stability of the sample tray loading plate during vibration and preventing vibration from being transmitted from the sample tray loading plate to the vibration base plate, thereby preventing unstable vibration of the entire device. The connecting rod, limiting spring and pressure plate in the fixing device can firmly fix the sample tray and prevent the sample tray from shifting or jumping during vibration, further ensuring the consistency and reliability of sample processing.

[0015] 3. This utility model ensures that the hot airflow is evenly distributed in the internal space of the shell through the partition and small holes on the partition of the drying device, avoiding the problems of local overheating or uneven drying, while protecting the sample from the impact of direct airflow and ensuring the uniform distribution of sample powder. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 is a front view cross-sectional structural diagram of this utility model;

[0018] Figure 3 is a magnified structural diagram of point A in Figure 2;

[0019] Figure 4 is a top view of the sample tray loading plate of this utility model. In the figure: 1. Sample tray loading plate; 11. Slot; 2. Vibration base plate; 3. Vibration machine column; 31. Telescopic rod; 4. Support spring; 5. Vibration generator; 6. Fixing device; 61. Connecting rod; 62. Limiting spring; 63. Pressure plate; 7. Sample tray; 8. Outer shell; 81. Cabinet door; 9. Drying device; 91. Electric hot air blower; 92. Partition; 93. Small hole. Detailed Implementation

[0020] 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.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] The following is a detailed description of the sample preparation device for a total radioactivity measuring disc in water according to the present invention, with reference to the accompanying drawings: Example 1

[0023] A sample preparation device for measuring total radioactivity in water includes a sample tray loading plate 1, a vibrating base plate 2, a vibrator column 3, a vibration generator 5, a fixing device 6, a sample tray 7, a shell 8, and a drying device 9. The vibrating base plate 2 is fixedly installed inside the bottom of the shell 8. The sample tray loading plate 1 is installed on the vibrating base plate (2) via the vibrator column 3. The sample tray loading plate 1 has four slots 11 that match the sample tray 7. The fixing device 6 is installed on both sides of the slots 11. The vibration generator 5 is fixedly installed at the bottom center of the sample tray loading plate 1. The sample tray 7 is fixedly placed on the slots 11 of the sample tray loading plate 1 via the fixing device 6. The drying device 9 is located above the sample tray loading plate 1.

[0024] The working principle of this embodiment is as follows:

[0025] The powder sample is placed in the recess of the sample tray 7, and alcohol is added as a homogenizing agent to help the sample be evenly distributed and ensure the accuracy of the measurement results. The sample tray 7 with the homogenizing agent is placed in the slot 11 of the sample tray loading plate 1 and fixed by the fixing devices 6 on both sides. The vibration generator 5 is turned on to drive the sample tray loading plate 1 to vibrate, so that the sample powder and homogenizing agent are vibrated and spread evenly on the sample tray 1. After the sample powder is vibrated and spread evenly, the vibration generator 5 is turned off and the drying device 9 is turned on to evaporate the homogenizing agent in the sample tray 7 and dry the sample powder. The dried sample is evenly adsorbed on the bottom of the sample tray 7. Then the sample tray 7 is removed and placed in the detection device for detection. Example 2

[0026] The difference from Embodiment 1 is that the top of the vibrator column 3 is provided with a telescopic rod 31 and a support spring 4; the bottom end of the telescopic rod 31 is connected to the top end of the vibrator column 3, and the top end is connected to the sample tray loading plate 1; the support spring 4 is sleeved on the telescopic rod 31; the fixing device 6 includes a connecting rod 61, a limiting spring 62, and a pressure plate 63; the connecting rod 61 is fixed on the sample tray loading plate 1, and a limiting block is provided at its top end; one end of the limiting spring 62 and the pressure plate 63 is sleeved on the connecting rod 61; the top end of the limiting spring 62 is fixedly connected to the limiting block, and the bottom end is connected to one end of the pressure plate 63; the other end of the pressure plate 63 presses down on the sample tray 7; the outer shell 8 is provided with a cabinet door 81; the cabinet door 81 is installed on the front side of the outer shell 8.

[0027] The cabinet door 81 allows operators to easily open and close the outer shell 8. After opening the cabinet door 81, manually lift the pressure plate 63 to retract the limit spring 62. After placing the sample tray 7 into the slot 11 of the sample tray loading plate 1, release your hand, the limit spring 62 will return to its original position, and the pressure plate 63 will be pushed to press the sample tray 7. The connecting rod 61 is fixed on the sample tray loading plate 1 and is prevented from falling off by the limit block at the top. After the sample tray 7 is placed in the sample tray loading plate 1, the sample tray loading plate 1 is connected to the vibrator column 3 by the telescopic rods 31 at the four corners for support. When the vibration generator 5 is working and generating vibration, the support spring 4 on the outside of the telescopic rod 31 can dampen the vibration and prevent the vibration base plate 2 from vibrating, thus driving the entire device to vibrate. At the same time, the sample tray loading plate 1 remains stable during the vibration process driven by the vibration generator 5 and transmits the vibration evenly to the sample tray 7, ensuring that the sample receives a uniform and stable vibration force.

[0028] The working principle of this embodiment is the same as that of Embodiment 1. Embodiment 3

[0029] The difference from Embodiment 2 is that the drying device 9 includes an electric hot air blower 91 and a partition 92; the partition 92 is located at the upper inside of the outer shell 8; the electric hot air blower 91 is fixedly installed on the outer side of the outer shell 8, and its output end extends into the partition 92 inside the outer shell 8; the partition 92 is provided with a plurality of small holes 93.

[0030] The electric heating fan 91 is started to generate hot airflow. The airflow is evenly distributed into the internal space of the outer shell 8 through several small holes 93 on the partition 92. While avoiding the airflow from affecting the uniform distribution of sample powder, it can also disperse the airflow, ensuring that the airflow comes into uniform contact with each sample tray 7 and accelerates the evaporation of homogeneous materials.

[0031] The working principle of this embodiment is the same as that of embodiment 2.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sample preparation device for measuring total radioactivity in water, characterized in that: The system includes a sample tray loading plate (1), a vibrating base plate (2), a vibrating machine column (3), a vibration generator (5), a fixing device (6), a sample tray (7), a housing (8), and a drying device (9). The vibrating base plate (2) is fixedly installed inside the bottom of the housing (8). The sample tray loading plate (1) is installed on the vibrating base plate (2) via the vibrating machine column (3). The sample tray loading plate (1) has several slots (11) that match the sample tray (7). The fixing device (6) is installed on both sides of the slots (11). The vibration generator (5) is fixedly installed at the bottom center of the sample tray loading plate (1). The sample tray (7) is fixedly placed on the slots (11) of the sample tray loading plate (1) via the fixing device (6). The drying device (9) is located above the sample tray loading plate (1).

2. The water total radioactivity measurement disc sample preparation device according to claim 1, characterized in that: The top of the vibrator column (3) is provided with a telescopic rod (31) and a support spring (4); the bottom end of the telescopic rod (31) is connected to the top end of the vibrator column (3), and the top end is connected to the sample tray loading plate (1); the support spring (4) is sleeved on the telescopic rod (31).

3. The device for preparing a sample for a measurement of gross radioactivity in water according to claim 1, characterized in that: The fixing device (6) includes a connecting rod (61), a limiting spring (62), and a pressure plate (63); the connecting rod (61) is fixed on the sample tray loading plate (1) and has a limiting block at its top; one end of the limiting spring (62) and the pressure plate (63) is sleeved on the connecting rod (61); the top end of the limiting spring (62) is fixedly connected to the limiting block, and the bottom end is connected to one end of the pressure plate (63); the other end of the pressure plate (63) presses down on the sample tray (7).

4. The device for preparing a sample for a measurement of gross radioactivity in water according to claim 1, characterized in that: The outer casing (8) is provided with a cabinet door (81); the cabinet door (81) is installed on the front side of the outer casing (8).

5. The water total radioactivity measurement disc sample preparation device according to claim 1, characterized in that: The drying device (9) includes an electric hot air blower (91) and a partition (92); the partition (92) is located inside the upper part of the outer shell (8); the electric hot air blower (91) is fixedly installed on the outer side of the outer shell (8), and its output end extends into the partition (92) inside the outer shell (8); the partition (92) has several small holes (93).

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