Fixing device for polonium-210 self-deposition and self-deposition device

Abstract

The utility model provides a fixing device for polonium-210 self-deposition and a self-deposition device. The fixing device comprises a deposition barrel with a deposition cavity, a mounting opening is formed in one side of the deposition barrel, and a mounting groove is formed in the inner wall, corresponding to the mounting opening, of the deposition barrel; the first end of the bearing plate penetrates through the mounting opening to be clamped and fixed to the mounting groove, the second end of the bearing plate extends to the outside of the deposition barrel, and the bearing plate is suitable for mounting a deposition piece and enables the deposition piece to be located in the deposition cavity of the deposition barrel; the deposition piece limiting assembly is arranged on the bearing plate and along the outer edge of the deposition piece, and the first end of the deposition piece limiting assembly abuts against the upper end face of the deposition piece. The fixing device provided by the utility model can efficiently and conveniently fix the position of the deposition sheet in the auto-deposition process of polonium-210, prevents a deposition layer on the surface of the deposition sheet from being damaged, ensures the continuity and stability of the auto-deposition process of polonium-210, and further improves the deposition effect and efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of self - deposition, in particular to a fixing device and a self - deposition device for the self - deposition of polonium - 210. Background Technique

[0002] At present, the α - spectrometry method is generally used for the detection of polonium - 210 in food. When preparing the counting source, the self - deposition method is usually used to deposit the polonium in the pretreated sample solution on the surface of the metal sheet. The uniformity and flatness of the deposition surface have a great influence on the counting rate of the subsequent sample detection. During the self - deposition process, uniform oscillation or stirring is required to make the polonium in the sample solution deposit more uniformly on the surface of the metal sheet. Therefore, it is very necessary to fix the deposition metal sheet during the self - deposition process, which can not only prevent the deposition layer on the surface of the deposition sheet from being damaged during the oscillation or stirring process, but also provide convenience for the subsequent cleaning of the metal sheet.

[0003] However, the existing polonium - 210 self - deposition device lacks a stable metal sheet fixing structure. For example, in the Chinese utility model patent CN219694700U (a self - deposition device), during the self - deposition process, once there is a slight oscillation or stirring operation of the solution, the deposition layer on the metal sheet is extremely easy to be damaged, which not only affects the uniformity and density of the deposition layer, but also significantly reduces the overall effect and efficiency of the polonium - 210 self - deposition, making it difficult to guarantee the quality and stability of the final product.

[0004] Therefore, it is very necessary and important to effectively fix the metal sheet during the self - deposition of polonium - 210 so that it is not affected by the oscillation or stirring operation. The utility model explores and improves this in combination with work practice. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a fixing device and a self - deposition device for the self - deposition of polonium - 210 to ensure the stability and uniformity of the deposition process, thereby improving the deposition effect and efficiency.

[0006] To solve the above - mentioned technical problem, the technical solution of the utility model is as follows:

[0007] The utility model provides a fixing device for the self - deposition of polonium - 210, including:

[0008] A deposition cylinder, the deposition cylinder has a deposition cavity, one side of the deposition cylinder is provided with an installation opening, and an installation groove is provided on the inner wall of the deposition cylinder corresponding to the installation opening;

[0009] A carrier plate, the first end of the carrier plate passes through the mounting opening and is snap-fitted and fixed to the mounting groove, the second end of the carrier plate extends to the outside of the deposition cylinder, and the carrier plate is adapted to mount a deposition sheet such that the deposition sheet is located in the deposition cavity of the deposition cylinder; and

[0010] A deposition sheet limiting assembly, the deposition sheet limiting assembly is arranged on the carrier plate and along the outer edge of the deposition sheet, and the first end of the deposition sheet limiting assembly abuts against the upper end surface of the deposition sheet.

[0011] Optionally, a deposition sheet mounting opening penetrating through the entire carrier plate is provided on the carrier plate, and a support frame adapted to the deposition sheet mounting opening is arranged in the deposition sheet mounting opening, and the deposition sheet is placed on the upper end surface of the support frame.

[0012] Optionally, a limiting groove is provided on the carrier plate for mounting the deposition sheet limiting assembly.

[0013] Optionally, the deposition sheet limiting assembly includes:

[0014] A limiting rod mounted in the limiting groove, the first end of the limiting rod abuts against the upper end surface of the deposition sheet, and the second end of the limiting rod abuts against the side wall of the mounting groove;

[0015] A limiting ring mounted in the limiting groove, the limiting ring is sleeved outside the limiting rod and is detachably snap-fitted with the limiting rod, and the limiting ring is arranged close to the first end of the limiting rod;

[0016] A limiting spring mounted in the limiting groove and sleeved outside the limiting rod, one end of the limiting spring contacts with one end of the limiting ring, and the other end of the limiting spring is close to the second end of the limiting rod.

[0017] Optionally, the first end of the limiting rod is set to be hemispherical, and the bottom of the second end of the limiting rod is set to be arc-shaped.

[0018] Optionally, the fixing device for the self-deposition of polonium-210 further includes:

[0019] Fixing plates arranged on both sides of the deposition cylinder and contacting with both sides of the second end of the carrier plate, and a groove matching the mounting opening is provided at one end of the fixing plate; and

[0020] A locking plate rotatably connected to the other end of the fixing plate, and the other side of the locking plate contacts with the end surface of the second end of the carrier plate.

[0021] Optionally, the fixing device for the self-deposition of polonium-210 further includes:

[0022] An adjusting plate arranged in the deposition cavity of the deposition cylinder and below the carrier plate, and the outer side of the adjusting plate is slidably connected to the inner wall of the deposition cavity of the deposition cylinder;

[0023] A positioning plate arranged below the adjusting plate, and the outer side of the positioning plate is fixedly connected to the inner wall of the deposition cavity of the deposition cylinder.

[0024] Optionally, a plurality of adjustment openings are provided through the adjustment plate;

[0025] A plurality of positioning openings adapted to the adjustment openings are provided through the positioning plate, and the plurality of positioning openings and the plurality of adjustment openings are arranged alternately.

[0026] Optionally, a driving rod is provided at the bottom end of the adjustment plate, and one end of the driving rod penetrates through the positioning plate and extends to the outside of the deposition cylinder.

[0027] The present utility model also provides a self-deposition device for polonium-210, comprising:

[0028] The fixing device for polonium-210 self-deposition according to the above;

[0029] A water bath container containing a sample solution for placing the fixing device for polonium-210 self-deposition;

[0030] A constant temperature water bath oscillator for performing self-deposition on the water bath container for a predetermined time.

[0031] The above solution of the present utility model at least includes the following beneficial effects:

[0032] 1. By providing a plurality of limiting rods in the bearing plate, during the installation process of the bearing plate, it can be ensured that these limiting rods can uniformly and tightly press against the upper end of the deposition sheet, which not only realizes the efficient and convenient fixing of the position of the deposition sheet, but also greatly enhances its stability, effectively preventing the risk of damage to the deposition layer on the surface of the deposition sheet caused by the position deviation of the deposition sheet during subsequent operations such as oscillation or stirring. It not only protects the integrity of the deposition layer, but also ensures the continuity and stability of the polonium-210 self-deposition process, thereby further improving the overall deposition effect and working efficiency;

[0033] 2. By providing the positioning plate and the adjustment plate inside the deposition cylinder, and cooperating with the layout of the plurality of positioning openings and the plurality of adjustment openings, when the adjustment plate is rotated to align or misalign the plurality of positioning openings and the plurality of adjustment openings, the bottom of the deposition cylinder can be easily and conveniently opened or closed, and the bottom of the deposition cylinder can be freely selected to be set in an open or closed state, thereby flexibly adjusting the deposition conditions to achieve single-sided deposition or double-sided deposition of polonium-210, thus broadening the application range and flexibility of the polonium-210 self-deposition technology, and enabling it to show better applicability and effect under different experimental scenarios and requirements.

[0034] It should be understood that the implementation of any embodiment of the present utility model does not mean that multiple or all of the above beneficial effects need to be simultaneously achieved or reached. Description of the Drawings

[0035] To more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0036] The structures, proportions, sizes, etc. illustrated in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present utility model. Therefore, they do not have technical substantive significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model.

[0037] Figure 1 The front view sectional schematic diagram of a water bath container with a fixing device provided for an alternative embodiment of the present utility model;

[0038] Figure 2 The front view sectional schematic diagram of a fixing device provided for an alternative embodiment of the present utility model;

[0039] Figure 3 The top view sectional schematic diagram of a bearing plate provided for an alternative embodiment of the present utility model;

[0040] Figure 4 The main body external view schematic diagram of a deposition device with a fixing device provided for an embodiment of the present utility model;

[0041] Figure 5 The deposition sheet schematic diagram provided for an alternative embodiment of the present utility model.

[0042] Explanation of the reference numerals in the drawings:

[0043] 1. Constant temperature water bath oscillator; 2. Water bath container; 3. Deposition cylinder; 4. Bearing plate; 5. Deposition sheet; 6. Limit rod; 7. Limit ring; 8. Limit spring; 9. Support frame; 10. Fixed plate; 11. Locking plate; 12. Positioning plate; 13. Adjusting plate; 14. Driving rod; 15. Positioning port; 16. Adjusting port.

[0044] The same or corresponding marks in the figure represent the same or corresponding parts. Specific embodiments

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present utility model more clearly understood, the embodiments of the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. Herein, the illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model, but not to limit the present utility model.

[0046] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0047] It should be understood that the terms "including / containing", "consisting of..." or any other variant is intended to cover non-exclusive inclusion, so that a product, device, process or method including a series of elements not only includes those elements, but also includes other elements that are not explicitly listed when needed, or also includes elements inherent to such product, device, process or method. Without more limitations, the elements defined by the statements "including / containing...", "consisting of..." do not exclude the existence of other identical elements in the product, device, process or method including the said elements.

[0048] It is also necessary to understand that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device, component or structure referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation to the present utility model.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined by "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The implementation of the present utility model will be described in detail below in conjunction with the preferred embodiments.

[0051] As Figures 1 to 2 shown, an embodiment of the present utility model provides a fixing device for polonium-210 self-deposition, including:

[0052] A deposition cylinder 3, the deposition cylinder 3 has a deposition cavity, one side of the deposition cylinder 3 is provided with an installation opening, and an installation groove is provided on the inner wall of the deposition cylinder 3 corresponding to the installation opening;

[0053] A bearing plate 4, the first end of the bearing plate 4 passes through the installation opening and is snap-fitted and fixed with the installation groove, the second end of the bearing plate 4 extends to the outside of the deposition cylinder 3, and a deposition sheet 5 is installed on the bearing plate 4 and the deposition sheet 5 is located in the deposition cavity of the deposition cylinder 3; and

[0054] A deposition sheet limiting component, the deposition sheet limiting component is arranged on the bearing plate 4 and is arranged along the outer edge of the deposition sheet 5, and the first end of the deposition sheet limiting component abuts against the upper end surface of the deposition sheet 5.

[0055] In this embodiment, the deposition cylinder 3 serves as the deposition main body during the deposition process, an opening is provided at the upper end thereof, and a deposition cavity for placing the deposition sheet 5 is provided inside; in a realizable example, the deposition cylinder 3 can be set as a cylindrical structure, such as a beaker, a container bottle, etc.; the installation opening and the installation groove on the deposition cylinder 3 are arranged opposite to each other, so as to facilitate the bearing plate 4 to be inserted from one side of the deposition cylinder 3 and be snap-fitted and fixed with the inner wall on the other side of the deposition cylinder 3.

[0056] Here, the bearing plate 4 serves as the installation and fixing main body of the deposition sheet 5, the first end thereof can be set as a circle adapted to the internal shape of the deposition cylinder 3, and the second end can be set as a rectangle, so as to facilitate installation and disassembly.

[0057] The deposition sheet limiting component is installed near the first end of the bearing plate 4 and on the upper end surface of the bearing plate 4 to limit the deposition sheet 5 after the deposition sheet 5 is installed; preferably, a limiting groove is provided on the bearing plate 4 for installing the deposition sheet limiting component; here, multiple deposition sheet limiting components can be provided, and the multiple deposition sheet limiting components are evenly distributed along the second end of the bearing plate 4 in a radial manner with the center point of the deposition sheet 5 as the center.

[0058] Before inserting the bearing plate 4 into the deposition cylinder 3, the deposition sheet 5 can be installed on the bearing plate 4 first, and then the bearing plate 4 is inserted into the deposition cylinder 3 and the deposition sheet is fixed and limited on the bearing plate 4 through the deposition sheet limiting component, so as to avoid the risk of damage to the deposition layer on the surface of the deposition sheet 5 caused by the position deviation of the deposition sheet 5 due to operations such as oscillation or stirring during the deposition process, thereby protecting the integrity of the deposition layer on the deposition sheet 5, ensuring the continuity and stability of the self-deposition process of polonium-210, and further improving the overall deposition effect and working efficiency.

[0059] When the fixing device provided by this embodiment is specifically applied to the self-deposition of polonium-210, the whole fixing device is placed on the deposition equipment; specifically such as Figures 3 to 4As shown, the deposition cylinder 3 is entirely disposed within the water bath container 2 of the deposition device. After the water bath container 2 is loaded with the deposition cylinder 3, the whole is placed on the constant temperature water bath oscillator 1 of the deposition device. When polonium-210 is self-deposited, the sample solution is poured into the water bath container 2, and then the constant temperature water bath oscillator 1 is started, so that the polonium in the sample solution can be deposited on the surface of the deposition sheet 5.

[0060] In an alternative embodiment of the present utility model, a deposition sheet mounting opening penetrating the entire carrier plate 4 is provided on the carrier plate 4. A support frame 9 adapted to the deposition sheet mounting opening is provided within the deposition sheet mounting opening, and the deposition sheet 5 is placed on the upper end surface of the support frame 9.

[0061] In this embodiment, the shape of the deposition sheet mounting opening is adapted to the shape of the deposition sheet 5, and the shape of the support frame 9 is adapted to the shape of the deposition sheet mounting opening. The deposition sheet 5 is placed on the upper end of the support frame 9. The support frame 9 can support the position of the deposition sheet 5 without affecting the deposition of polonium-210 at the bottom of the deposition sheet 5, so as to prevent the deposition sheet 5 from falling off due to operations such as oscillation or stirring during the deposition process.

[0062] As Figure 3 shown, in an alternative embodiment of the present utility model, each deposition sheet limiting component may include:

[0063] A limiting rod 6 installed in the limiting groove. The first end of the limiting rod 6 abuts against the upper end surface of the deposition sheet 5, and the second end of the limiting rod 6 abuts against the side wall of the installation groove.

[0064] A limiting ring 7 installed in the limiting groove. The limiting ring 7 is sleeved outside the limiting rod 6 and is detachably clamped with the limiting rod 6. The limiting ring 7 is disposed close to the first end of the limiting rod 6.

[0065] A limiting spring 8 installed in the limiting groove and sleeved outside the limiting rod 6. One end of the limiting spring 8 contacts one end of the limiting ring 7, and the other end of the limiting spring 8 is close to the second end of the limiting rod 6.

[0066] In this embodiment, the limiting groove can be set in a middle character shape. The limiting rod 6 is installed in the limiting groove and both ends are respectively attached to the groove bodies at both ends of the limiting groove. The limiting rod 6 can be set in a strip shape. Preferably, the first end of the limiting rod 6 is set as a hemispherical shape and abuts against the installation groove on the inner wall of the deposition cylinder 3, and the bottom of the second end of the limiting rod 6 is set as an arc shape and abuts against the upper end surface of the deposition sheet 5. The setting of the limiting rod 6 can, on the one hand, prevent the deposition sheet 5 from sliding, falling off, changing position, etc. during the deposition process, and on the other hand, can also prevent damage to the deposition layer on the deposition sheet 5.

[0067] The limiting ring 7 is installed in the middle of the limiting groove and is sleeved outside the limiting rod 6. Preferably, a clamping groove matching the external shape of the limiting rod 6 is provided on the inner wall of the limiting ring 7 to facilitate the clamping of the limiting rod 6.

[0068] A limiting spring 8 is sleeved outside the limiting rod 6. Both ends of the limiting spring 8 are respectively arranged in the limiting groove and on one side of the limiting ring 7. The limiting ring 7 cooperates with the limiting spring 8 to limit the position of the limiting rod 6. Before the bearing plate 4 is inserted into the deposition cylinder 3, the limiting spring 8 is in a natural stretched state. At this time, the limiting rod 6 is separated from the limiting ring 7, and the second end of the limiting rod 6 is far from the deposition sheet 5 and no longer abuts against the upper end surface of the deposition sheet 5. After the bearing plate 4 is inserted into the deposition cylinder 3, the first end of the limiting rod 6 abuts against the installation groove on the inner wall of the deposition cylinder 3. Affected by the pressure of the limiting groove, the limiting spring 8 is in a compressed state. The compression of the limiting spring 8 drives the limiting rod 6 to move in the direction close to the deposition sheet 5. When the limiting rod 6 is internally clamped with the limiting ring 7, at this time, the limiting rod 6 no longer moves, and the second end of the limiting rod 6 abuts against the upper end surface of the deposition sheet 5 to limit and fix the deposition sheet, avoiding the problem of poor deposition effect caused by the instability of the deposition sheet during the deposition process.

[0069] Through the setting of the deposition sheet limiting component, when the bearing plate 4 is separated from the installation groove, the limiting ring 7 cooperates with the limiting spring 8 to make the limiting rod 6 move away from the deposition sheet 5, so that the deposition sheet 5 can be conveniently disassembled.

[0070] As Figure 1 and 3 shown, in an alternative embodiment of the present invention, the fixing device for polonium-210 self-deposition may further include:

[0071] Fixing plates 10 arranged on both sides of the deposition cylinder 3 and in contact with both sides of the second end of the bearing plate 4. One end of the fixing plate 10 is provided with a groove matching the installation opening;

[0072] A locking plate 11 rotatably connected to the other end of the fixing plate 10. The other side of the locking plate 11 is in contact with the end face of the second end of the bearing plate 4.

[0073] In this embodiment, one fixing plate 10 is provided on each side of the deposition cylinder 3, and each fixing plate 10 is fixedly connected to the outer wall of the deposition cylinder 3; the two fixing plates 10 are respectively located on both sides of the second end of the bearing plate 4. A locking plate 11 is rotatably connected to one side of each of the two fixing plates 10, and the two locking plates 11 respectively abut against both sides of the second end of the bearing plate 4. Preferably, the locking plate 11 is set in an L shape. One part of the L-shaped locking plate is rotatably connected to one side of the fixing plate 10, and the other part is detachably attached to the end face of the second end of the bearing plate 4 (when the locking plate 11 is rotated in the first direction, the other part of the locking plate is clamped and attached to the end face of the second end of the bearing plate 4. When the locking plate 11 is rotated in the first direction, the other part of the locking plate is separated from the end face of the second end of the bearing plate 4; here, the first direction and the second direction are two opposite directions);

[0074] By cooperating two locking plates 11 arranged in an L shape with two fixing plates 10, the second end of the bearing plate 4 can be fixed, preventing the bearing plate 4 from shaking during the deposition process and resulting in poor deposition effect, thereby improving the deposition efficiency. At the same time, by rotatably connecting the locking plate 11 with the fixing plate 10, it is also convenient for the installation and disassembly of the bearing plate 4.

[0075] In an alternative embodiment of the present utility model, the fixing device for polonium-210 self-deposition may further include:

[0076] An adjusting plate 13 disposed in the deposition cavity of the deposition cylinder 3 and located below the bearing plate 4, the outer side of the adjusting plate 13 is slidably connected to the inner wall of the deposition cavity of the deposition cylinder 3;

[0077] A positioning plate 12 disposed below the adjusting plate 13, the outer side of the positioning plate 12 is fixedly connected to the inner wall of the deposition cavity of the deposition cylinder 3.

[0078] In this embodiment, the adjusting plate 13 and the positioning plate 12 are exactly the same in size and shape. Among them, a plurality of adjusting openings 16 are provided through the adjusting plate 13; a plurality of positioning openings 15 adapted to the adjusting openings 16 are provided through the positioning plate 12, and the plurality of positioning openings 15 and the plurality of adjusting openings 16 are arranged in a staggered manner. Here, the positioning openings 15 and the adjusting openings 16 are in one-to-one correspondence, and the positioning openings 15 and the adjusting openings 16 are exactly the same in size and shape.

[0079] In an achievable example of the present utility model, a driving rod 14 is provided at the bottom end of the adjusting plate 13, and one end of the driving rod 14 penetrates through the positioning plate 12 and extends to the outside of the deposition cylinder 3.

[0080] In this embodiment, one end of the driving rod 14 is fixedly connected to the adjusting plate 13, and the other end of the driving rod 14 penetrates through the positioning plate 12. Under the driving action of the driving rod 14, the adjusting plate 13 can rotate in the inner wall of the deposition cylinder 3. When rotating the adjusting plate 13 through the driving rod 14, the plurality of positioning openings 15 and the plurality of adjusting openings 16 can be aligned or misaligned, so as to freely select to set the bottom of the deposition cylinder 3 to an open or closed state, thereby flexibly adjusting the deposition conditions and realizing single-sided deposition or double-sided deposition of polonium-210.

[0081] For the fixing device provided in the above embodiment of the present utility model, the deposition cylinder 3 is preferably circular, with a diameter of 2.5 cm and a height of 3 cm. A metal sheet (deposition sheet 5) with a diameter of 2 cm can be placed in the middle, as Figure 5 shown. Each component is made of polytetrafluoroethylene.

[0082] The fixing device provided by the above-mentioned embodiment of the present utility model, during the self-deposition of polonium-210, first place the deposition sheet 5 on the upper end of the support frame 9 inside the bearing plate 4, and then install the bearing plate 4 into the installation groove inside the deposition cylinder 3. When the bearing plate 4 enters the installation groove, under the pressure of the inner wall of the installation groove and the elastic force of the limit spring 8, a plurality of limit rods 6 on one side of the bearing plate 4 will move towards the deposition sheet 5 until they stop when the limit rods 6 are engaged with the limit ring 7. The plurality of limit rods 6 will simultaneously abut against the upper end of the deposition sheet 5 to fix the position of the deposition sheet 5, so as to ensure that during the deposition process, the limit rods 6 can evenly and tightly press against the upper end of the deposition sheet 5, so as to achieve efficient and convenient fixing of the position of the deposition sheet 5, enhance the stability of the position of the deposition sheet 5, effectively prevent the risk of damage to the deposition layer on the surface of the deposition sheet caused by the displacement of the deposition sheet 5 during subsequent operations such as oscillation or stirring, thereby ensuring the integrity of the deposition layer, ensuring the continuity and stability of the polonium-210 self-deposition process, and at the same time improving the overall deposition effect and efficiency; at the same time, with the interaction of the positioning plate 12, the adjusting plate 13 and the driving rod 14, it is possible to freely select to set the bottom of the deposition cylinder 3 to be open or closed, and then flexibly adjust the deposition conditions to achieve single-sided deposition or double-sided deposition of polonium-210, thereby improving the applicability and effect of the device.

[0083] In the polonium-210 self-deposition operation of the fixing device provided by the above-mentioned embodiment of the present utility model, after placing the deposition sheet 5 and fixing the device, the whole device is placed in a 100 mL water bath container 2 containing a sample solution. The water bath container 2 can be a water bath pot or a wide-mouth conical flask. After the conical flask mouth is plugged with a rubber stopper, the whole conical flask is placed in a constant temperature water bath oscillator 1 for a 2-hour self-deposition process. After the self-deposition is completed, after taking out the device from the water bath container 2, first clean and dry the whole device (80 °C), and then pull out the bearing plate 4 to take out the deposited deposition sheet 5 for subsequent operations.

[0084] The above is the preferred embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A fixing device for the self-deposition of polonium-210, characterized in that, Comprising: A deposition cylinder (3), the deposition cylinder (3) having a deposition cavity, one side of the deposition cylinder (3) being provided with an installation opening, and an installation groove being provided on the inner wall of the deposition cylinder (3) corresponding to the installation opening; A bearing plate (4), a first end of the bearing plate (4) passing through the installation opening and being snap-fitted and fixed to the installation groove, a second end of the bearing plate (4) extending to the outside of the deposition cylinder (3), and a deposition sheet (5) being adapted to be installed on the bearing plate (4) such that the deposition sheet (5) is located in the deposition cavity of the deposition cylinder (3); And A deposition sheet limiting component, the deposition sheet limiting component being arranged on the bearing plate (4) and along the outer edge of the deposition sheet (5), a first end of the deposition sheet limiting component abutting against the upper end surface of the deposition sheet (5).

2. The fixing device for polonium-210 self-deposition according to claim 1, characterized in that, A deposition sheet installation opening penetrating through the entire bearing plate (4) is provided on the bearing plate (4), and a support frame (9) adapted to the deposition sheet installation opening is arranged in the deposition sheet installation opening, and the deposition sheet (5) is placed on the upper end surface of the support frame (9).

3. The fixing device for polonium-210 self-deposition according to claim 1, characterized in that, A limiting groove is provided on the bearing plate (4) for installing the deposition sheet limiting component.

4. The fixing device for polonium-210 self-deposition according to claim 3, characterized in that, The deposition sheet limiting component includes: A limiting rod (6) installed in the limiting groove, a first end of the limiting rod (6) abutting against the upper end surface of the deposition sheet (5), and a second end of the limiting rod (6) abutting against the side wall of the installation groove; A limiting ring (7) installed in the limiting groove, the limiting ring (7) being sleeved outside the limiting rod (6) and being detachably snap-fitted with the limiting rod (6), and the limiting ring (7) being arranged close to the first end of the limiting rod (6); A limiting spring (8) installed in the limiting groove and sleeved outside the limiting rod (6), one end of the limiting spring (8) contacting one end of the limiting ring (7), and the other end of the limiting spring (8) being close to the second end of the limiting rod (6).

5. The fixing device for polonium-210 self-deposition according to claim 4, characterized in that, The first end of the limiting rod (6) is arranged in a hemispherical shape, and the bottom of the second end of the limiting rod (6) is arranged in an arc shape.

6. The fixing device for polonium-210 self-deposition according to claim 1, characterized in that, It further includes: Fixing plates (10) arranged on both sides of the deposition cylinder (3) and contacting both sides of the second end of the bearing plate (4), one end of the fixing plate (10) being provided with a groove matching the installation opening; and A locking plate (11) rotatably connected to the other end of the fixing plate (10), the other side of the locking plate (11) contacting the end surface of the second end of the bearing plate (4).

7. The fixing device for polonium-210 self-deposition according to claim 1, characterized in that, It further includes: An adjusting plate (13) arranged in the deposition cavity of the deposition cylinder (3) and below the bearing plate (4), the outer side of the adjusting plate (13) being slidably connected to the inner wall of the deposition cavity of the deposition cylinder (3); A positioning plate (12) arranged below the adjusting plate (13), the outer side of the positioning plate (12) being fixedly connected to the inner wall of the deposition cavity of the deposition cylinder (3).

8. The fixing device for polonium-210 self-deposition according to claim 7, characterized in that, A plurality of adjusting openings (16) are provided through the adjusting plate (13); A plurality of positioning ports (15) adapted to the adjustment ports (16) are provided through the positioning plate (12), and the plurality of positioning ports (15) and the plurality of adjustment ports (16) are arranged in a staggered manner.

9. The fixing device for polonium-210 self-deposition according to claim 7, characterized in that, A driving rod (14) is provided at the bottom end of the adjusting plate (13), and one end of the driving rod (14) penetrates through the positioning plate (12) and extends to the outside of the deposition cylinder (3).

10. A self-deposition device for polonium-210, characterized in that, Comprising: The fixing device for polonium-210 self-deposition according to any one of claims 1 to 9; A water bath container containing a sample solution for placing the fixing device for polonium-210 self-deposition; A constant temperature water bath oscillator for performing self-deposition on the water bath container for a predetermined time.

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