Material mixing device

Abstract

The invention relates to the technical field of radiation, and provides a material mixing device which is used for a radioactive hot cell, the material mixing device comprises a first container, a second container and a transmission pipeline, a liquid storage cavity and a liquid outlet communicated with the liquid storage cavity are formed in the first container, and the liquid storage cavity is used for containing an inorganic salt solution; a mixing cavity and a liquid inlet communicated with the mixing cavity are formed in the second container, and the mixing cavity is used for containing solid materials; the transmission pipeline is communicated with the liquid outlet and the liquid inlet; the first container and the second container are distributed at intervals in the vertical direction, and the liquid outlet is higher than the liquid inlet. According to the material mixing device provided by the embodiment of the invention, the failure rate of the material mixing device in the radioactive hot chamber can be reduced, and the reliability of material mixing is ensured.

Description

Technical Field

[0001] The present application relates to the field of radiation technology, and particularly to a material mixing device. Background Art

[0002] This section aims to provide background or context for the embodiments of the present application. The description herein is not admitted to be prior art merely because it is included in this section.

[0003] In industrial production, material mixing is often a crucial step in the production process. The quality of material mixing not only directly determines the quality and consistency of products but also affects the efficiency of the production process. In many industries, especially in the fields of chemical engineering, pharmaceuticals, food processing, and energy, the optimization and precise control of the mixing process are the keys to ensuring that products meet the expected standards and satisfy safety and environmental protection requirements. Different types of materials (such as solids, liquids, or gases) may be affected by various factors during the mixing process, including the physical properties of the materials, environmental conditions, and the choice of mixing methods. Therefore, selecting a suitable material mixing device is of great significance for improving production efficiency, reducing energy consumption, reducing waste, and enhancing product quality.

[0004] In the related art, when material mixing is carried out in a radioactive hot cell, the material mixing device is prone to failure. Summary of the Invention

[0005] In view of this, embodiments of the present application are expected to provide a material mixing device that can reduce the failure rate of the material mixing device in a radioactive hot cell and ensure the reliability of material mixing.

[0006] Embodiments of the present application provide a material mixing device for a radioactive hot cell, and the material mixing device includes:

[0007] A first container, which forms a liquid storage cavity and a liquid outlet communicating with the liquid storage cavity, and the liquid storage cavity is used for containing an inorganic salt solution;

[0008] A second container, which forms a mixing cavity and a liquid inlet communicating with the mixing cavity, and the mixing cavity is used for containing solid materials;

[0009] A transmission pipeline, which connects the liquid outlet and the liquid inlet; the first container and the second container are spaced apart in the vertical direction, and the height of the liquid outlet is higher than the height of the liquid inlet.

[0010] In some embodiments, the material mixing device includes a non-leaking joint, and at least one of the liquid outlet and the liquid inlet is connected to the transmission pipeline through the non-leaking joint.

[0011] In some embodiments, the material mixing device includes a pneumatic balance member that communicates the liquid storage chamber with the atmosphere.

[0012] In some embodiments, the material mixing device includes a filter member disposed in the transfer pipeline.

[0013] In some embodiments, the material mixing device includes a regulating valve disposed in the transfer pipeline, and the regulating valve is used to regulate the flow rate of the inorganic salt solution in the transfer pipeline.

[0014] In some embodiments, the flow rate of the inorganic salt solution in the transfer pipeline is between 50 μL / min and 400 μL / min.

[0015] In some embodiments, the material mixing device includes a filter member disposed in the transfer pipeline, and the regulating valve is disposed downstream of the filter member in the transfer pipeline.

[0016] In some embodiments, the inorganic salt solution from the transfer pipeline drips into the mixing chamber.

[0017] In some embodiments, the liquid level of the inorganic salt solution in the mixing chamber is not higher than the highest point of the solid material.

[0018] In some embodiments, the material mixing device includes a heating member that heats the mixing chamber to evaporate the solvent of the inorganic salt solution.

[0019] In some embodiments, the solid material is in granular form, and the particle size of the solid material is not greater than 0.1 mm.

[0020] For the material mixing device provided by the embodiments of the present application, the height of the liquid outlet is higher than the height of the liquid inlet. Under the action of gravity, the inorganic salt solution can spontaneously flow from the first container to the second container through the transfer pipeline, so as to be mixed with the solid material. On the one hand, there is no need to drive the material mixing by a power source as in the related art, so that the influence of radiation generated by radioactive substances such as solid materials on the power source can be avoided, the failure rate of the material mixing device can be reduced, and the service life can be extended. On the other hand, since there is no need for a power source to provide driving force, not only can the energy consumption be significantly reduced, but it is still not affected in the case of power source interruption (such as power outage), making the operation process of the material mixing device more reliable. On the other hand, the overall structure of the material mixing device is simple, the requirements for sealing, lubrication, etc. are reduced, thereby reducing the risk of radiation leakage caused by long-term operation, wear or seal failure in the existing material mixing equipment, and improving the safety of the operating environment. Description of the Drawings

[0021] Figure 1Schematic structural diagram of the material mixing device provided by some embodiments of the present application in a radioactive hot cell;

[0022] Figure 2 Schematic structural diagram of the material mixing device provided by other embodiments of the present application in a radioactive hot cell.

[0023] Description of reference numerals

[0024] Material mixing device 1;

[0025] First container 11; liquid storage chamber 11a; liquid outlet 11b;

[0026] Second container 12; mixing chamber 12a; liquid inlet 12b;

[0027] Transfer pipeline 13;

[0028] Leak - free joint 14;

[0029] Air pressure balance member 15;

[0030] Filter member 16;

[0031] Regulating valve 17;

[0032] Heating member 18;

[0033] Radioactive hot cell 2. Detailed implementation manners

[0034] The following further describes in detail the implementation manners of the present application with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0035] In the description of the embodiments of the present application, the "up - down direction" orientation or positional relationship is based on Figure 1 and Figure 2 the shown orientation or positional relationship. It should be understood that these orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0036] In the detailed implementation manners, each specific technical feature and each embodiment described can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features / embodiments can form different implementation manners. To avoid unnecessary repetition, various possible combination manners of each specific technical feature / embodiment in the present application will not be described separately. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0037] In related technologies, common material mixing devices such as vibrating screens, ball mills, rotary mixers, or drum mixers, etc., these devices are driven by electric energy or mechanical energy to mix different materials. However, in the high-radiation environment of a radioactive hot cell, components of the material mixing device such as motors, sensors, connectors, and mechanical structures will be directly impacted by radiation particles, causing radiation damage, specifically manifested as embrittlement of metals, aging of plastic materials, loss of function of electronic components, etc., thus resulting in a reduction in the performance of the material mixing device or even its failure.

[0038] In addition, radioactive substances release heat during the decay process, and the continuous thermal effect will accelerate the aging of the material mixing device. Especially in the case of frequent temperature changes, the material mixing device will also be affected by stress corrosion and thermal fatigue. Moreover, if the material mixing device fails, it is difficult for operators to directly enter the radioactive hot cell for maintenance, and its maintenance and replacement will bring a large amount of resource consumption and safety risks.

[0039] Please refer to Figure 1 and Figure 2 As shown in FIGS.

[0040] A radioactive hot cell 2 refers to an enclosed chamber used to handle radioactive substances. The radioactive hot cell 2 has good shielding performance and can prevent the radiation inside the radioactive hot cell 2 from penetrating into the external environment.

[0041] The material mixing device 1 is disposed inside the radioactive hot cell 2, that is to say, the material mixing device 1 is exposed to a radioactive environment and will come into contact with radioactive particles.

[0042] The first container 11 is formed with a liquid storage chamber 11a and a liquid outlet 11b communicating with the liquid storage chamber 11a. The liquid storage chamber 11a is used to hold an inorganic salt solution; the second container 12 is formed with a mixing chamber 12a and a liquid inlet 12b communicating with the mixing chamber 12a. The mixing chamber 12a is used to hold solid materials; the transmission pipeline 13 communicates the liquid outlet 11b and the liquid inlet 12b.

[0043] An inorganic salt solution refers to a mixture formed by dissolving inorganic salts in a solvent (for example, the solvent is an aqueous solution). The solid material can be a radioactive substance that can generate radiation. The solid material can also be a non-radioactive substance that cannot generate radiation.

[0044] The transfer pipeline 13 is connected to the liquid outlet 11b and the liquid inlet 12b. That is to say, the inorganic salt solution located in the liquid storage chamber 11a can flow into the transfer pipeline through the liquid outlet 11b, be transported through the transfer pipeline to the liquid inlet 12b, and finally flow into the mixing chamber 12a through the liquid inlet 12b to be mixed with the solid material.

[0045] The mixing process of the inorganic salt solution and the solid material is as follows: after the inorganic salt solution enters the mixing chamber 12a, the solvent of the inorganic salt solution begins to evaporate to precipitate the inorganic salt, and the inorganic salt adsorbs on the surface of the solid material and / or in the gaps of the solid material until all the solvents of the inorganic salt solution are completely evaporated, and the mixing of the inorganic salt solution and the solid material is completed to form a mixed product. That is to say, in the embodiment of the present application, the mixing process of the inorganic salt solution and the solid material is only a physical process and no new substances are generated.

[0046] Please refer to Figure 1 , the first container 11 and the second container 12 are spaced apart in the vertical direction, and the height of the liquid outlet 11b is higher than the height of the liquid inlet 12b. In this way, under the action of gravity, the inorganic salt solution can spontaneously flow from the first container 11 to the second container 12, so as to be mixed with the solid material. That is to say, the material mixing device 1 in the embodiment of the present application mixes the inorganic salt solution and the solid material by means of passive mixing.

[0047] Passive mixing uses natural forces and physical phenomena (such as gravity, natural convection, diffusion, etc.) and other passive mechanisms to drive the mixing of materials, without the need for a power source to provide driving force. A power source refers to a driving structure that provides driving force, such as a motor, etc.

[0048] The first container 11 and the second container 12 being spaced apart in the vertical direction means that the first container 11 and the second container 12 are spaced apart in the vertical direction. Exemplarily, please refer to Figure 1 and Figure 2 , the first container 11 can be located directly above the second container 12, or the first container 11 and the second container 12 can be misaligned.

[0049] Exemplarily, taking the plane perpendicular to the vertical direction as the projection plane, at least part of the projections of the first container 11 and the second container 12 do not overlap.

[0050] At least part of the projections of the first container 11 and the second container 12 not overlapping means that: it can be that part of the projections of the first container 11 and the second container 12 do not overlap, or it can be that the projections of the first container 11 and the second container 12 completely do not overlap. Please refer to Figure 2When the installation space of the first container 11 and the second container 12 in the radioactive hot cell 2 is limited, the first container 11 and the second container 12 can be arranged in a staggered manner. In this way, the first container 11 and the second container 12 can be reasonably arranged according to the positions of other equipment in the radioactive hot cell 2, so as to make full use of the limited space and keep a distance from other equipment in the radioactive hot cell 2 to prevent breakage caused by collision.

[0051] It can be understood that with a plane perpendicular to the up-down direction as the projection plane, at least part of the projections of the first container 11 and the second container 12 may also overlap. At least part of the projections of the first container 11 and the second container 12 overlapping means that it can be partial overlap of the projections of the first container 11 and the second container 12, or, it can be complete overlap of the projections of the first container 11 and the second container 12. Exemplarily, please refer to Figure 1 With a plane perpendicular to the up-down direction as the projection plane, the projection of the first container 11 is within the projection range of the second container 12. The embodiments of the present application do not limit the specific positions of the first container 11 and the second container 12, as long as the height of the liquid outlet 11b is higher than the height of the liquid inlet 12b.

[0052] It should be noted that in the present application, "down" refers to the direction towards the ground, and "up" is the direction opposite to "down".

[0053] For the material mixing device 1 provided by the embodiments of the present application, the height of the liquid outlet 11b is higher than the height of the liquid inlet 12b. Under the action of gravity, the inorganic salt solution can spontaneously flow from the first container 11 to the second container 12 through the transmission pipeline 13, so as to be mixed with the solid material. On the one hand, there is no need to drive the material mixing by a power source as in the related art, so that the influence of radiation generated by radioactive substances such as solid materials on the power source can be avoided, the failure rate of the material mixing device 1 can be reduced, and the service life can be extended. On the other hand, since there is no need for a power source to provide driving force, not only can the energy consumption be significantly reduced, but it is still not affected in the case of power source interruption (such as power outage), so that the operation process of the material mixing device 1 is more reliable. On the other hand, the overall structure of the material mixing device 1 is simple, the requirements for sealing, lubrication, etc. are reduced, thereby reducing the risk of radiation leakage caused by long-term operation, wear or seal failure in the existing material mixing equipment, and improving the safety of the operation environment.

[0054] The specific type of the first container 11 is not limited. For example, it can be a bottle-type container, a bag-type container, etc. The first container 11 only needs to have a liquid storage cavity 11a for storing the inorganic salt solution and an outlet 11b that can allow the inorganic salt solution to flow through. There is no need to customize the first container 11, which is convenient to purchase and has a low cost. As an example, when the inorganic salt solution in the liquid storage cavity 11a completely flows out, the inorganic salt solution can also be filled into the liquid storage cavity 11a through the outlet 11b. In this way, the first container 11 can be reused, which is convenient and fast and saves costs. In some examples, the first container 11 includes a body and a lid. The body has a liquid storage cavity 11a and a liquid injection port communicating with the liquid storage cavity 11a. The lid can have an outlet 11b. The lid detachably closes the liquid injection port, and the liquid injection port is used to fill the inorganic salt solution into the liquid storage cavity 11a.

[0055] The body and the lid can be detachably connected or non-detachably connected.

[0056] In the embodiments of the present application, unless otherwise specifically stated, the detachable connection includes, but is not limited to, snap connection, screw connection, or bolt connection, etc. The non-detachable connection includes, but is not limited to, welding or bonding, etc.

[0057] The specific type of the second container 12 is not limited. For example, it can be a dish, etc. The second container 12 only needs to have a mixing cavity 12a for storing solid materials and an inlet 12b that can allow the inorganic salt solution to flow through. There is no need to customize the second container 12, which is convenient to purchase and has a low cost. It can be understood that when the mixing of the inorganic salt solution and the solid materials in the mixing cavity 12a is completed, the mixed product can be taken out of the mixing cavity 12a through the inlet 12b, and then the solid materials can be filled into the mixing cavity 12a through the inlet 12b. In this way, the second container 12 can be reused, which is convenient and fast and saves costs.

[0058] The first container 11 is prepared from a material with radiation protection performance. For example, it can be glass, inert metal, etc. In this way, the first container 11 can not only reduce the radiation impact and extend the service life, but also avoid reacting with the inorganic salt solution to generate impurities. In addition, the first container 11 made of glass can directly observe the volume of the inorganic salt solution, which is convenient for the operator to judge the mixing progress.

[0059] The second container 12 is prepared from a material with radiation protection performance. For example, it can be glass, inert metal, etc. In this way, the second container 12 can not only reduce the radiation impact and extend the service life, but also avoid reacting with the inorganic salt solution and the solid materials to generate impurities. In addition, the second container 12 made of glass can directly observe the mixing process of the inorganic salt solution and the solid materials.

[0060] The transfer pipeline 13 can be made of materials with radiation-proof properties. For example, it can be glass, inert metal, etc. It can also be made of flexible materials. For example, it can be polyurethane resin, etc. Flexible materials refer to materials that can produce elastic deformations such as bending, folding, twisting, compressing, and / or stretching and can recover the deformation within a certain limit. In this way, it is convenient to lay the transfer pipeline 13.

[0061] In one embodiment, please refer to Figure 1 and Figure 2 , the liquid outlet 11b is open downward, and the liquid inlet 12b is open upward. That is to say, the transfer pipeline 13 can be laid in the vertical direction. In this way, the inorganic salt solution can flow along a relatively straight path. In this way, it is not only convenient for the transfer pipeline 13 to communicate with the liquid outlet 11b and the liquid inlet 12b, but also can prevent the inorganic salt solution from accumulating in the bent section of the transfer pipeline 13, and the inorganic salt solution can also smoothly flow from the liquid storage cavity 11a into the mixing cavity 12a through the transfer pipeline 13.

[0062] In one embodiment, the area of the liquid inlet 12b is larger than the area of the liquid outlet 11b. In this way, the inorganic salt solution can smoothly flow into the mixing cavity 12a through the liquid inlet 12b.

[0063] In one embodiment, a support structure is provided on the inner wall surface of the radioactive hot cell 2. In this way, the first container 11 can be set on the support structure through a hook or a hanging rope to improve the stability of the first container 11. Exemplarily, the first container 11 is a bottle-shaped container. When material mixing is not required, the liquid outlet 11b is usually open upward. When material mixing is required, the first container 11 is inverted and hung on the support structure through a hanging rope. In this way, the liquid outlet 11b is open downward. In this way, the inorganic salt solution can flow out from the liquid outlet 11b.

[0064] In one embodiment, the liquid outlet 11b is formed on the bottom wall surface of the first container 11. In this way, basically all the inorganic salt solution in the liquid storage cavity 11a can be discharged through the liquid outlet 11b, reducing waste.

[0065] In some embodiments, please refer to Figure 1 and Figure 2 , the material mixing device 1 includes a non-leaking joint 14, and at least one of the liquid outlet 11b and the liquid inlet 12b is connected to the transfer pipeline 13 through the non-leaking joint 14. The non-leaking joint 14 refers to a highly sealed joint used for connecting a container and a pipeline. In this way, by connecting at least one of the liquid outlet 11b and the liquid inlet 12b through the non-leaking joint 14, it is ensured that the inorganic salt solution will not leak out, improving the sealing performance of the material mixing device 1.

[0066] Exemplarily, for example, the liquid outlet 11b communicates with the transfer pipeline 13 through a leak-free joint 14. Also for example, the liquid inlet 12b communicates with the transfer pipeline 13 through a leak-free joint 14. Still for example, both the liquid outlet 11b and the liquid inlet 12b communicate with the transfer pipeline 13 through a leak-free joint 14.

[0067] The specific type of the leak-free joint 14 is not limited. For example, it can be a Luer joint.

[0068] In some embodiments, please refer to Figure 1 and Figure 2 , the material mixing device 1 includes a pneumatic balance member 15, and the pneumatic balance member 15 communicates with the liquid storage cavity 11a and the atmosphere. The pneumatic balance member 15 is used to maintain the balance between the air pressure in the liquid storage cavity 11a and the atmospheric pressure, and to prevent a negative pressure from being formed in the liquid storage cavity 11a, which may cause the inorganic salt solution to be unable to flow out of the liquid outlet 11b.

[0069] Exemplarily, the pneumatic balance member 15 is formed with a ventilation channel, and the ventilation channel is a one-way channel. In this way, the inorganic salt solution in the liquid storage cavity 11a cannot overflow outward through the ventilation channel, and the outside air can enter the liquid storage cavity 11a through the ventilation channel.

[0070] Exemplarily, during the process of material mixing, the inorganic salt solution in the liquid storage cavity 11a gradually decreases, the cavity volume in the liquid storage cavity 11a gradually increases, the air pressure in the liquid storage cavity 11a gradually decreases, and the outside air can enter the liquid storage cavity 11a through the ventilation channel to compensate the air pressure in the liquid storage cavity 11a to maintain the air pressure stability of the liquid storage cavity 11a.

[0071] In one embodiment, please refer to Figure 1 , the pneumatic balance member 15 is connected to the surrounding part of the liquid outlet 11b. In this way, the first container 11 and the pneumatic balance member 15 can be an integral structure, which is convenient for assembly.

[0072] The pneumatic balance member 15 and the first container 11 can be detachably connected or non-detachably connected.

[0073] In one embodiment, please refer to Figure 2 , the pneumatic balance member 15 is arranged on the transfer pipeline 13, and the pneumatic balance member 15 communicates with the liquid storage cavity 11a through the transfer pipeline 13. In this way, the pneumatic balance member 15 and the transfer pipeline 13 can be an integral structure, which is convenient for assembly.

[0074] The pneumatic balance member 15 and the transfer pipeline 13 can be detachably connected or non-detachably connected.

[0075] In some embodiments, please refer to Figure 1 and Figure 2, the material mixing device 1 includes a filter element 16, and the filter element 16 is arranged in the transmission pipeline 13. The filter element 16 is used to filter the solid impurities in the inorganic salt solution. In this way, it is possible to prevent the solid impurities from blocking the transmission pipeline 13 or mixing with the solid materials, which may affect the quality of the mixed product.

[0076] Exemplarily, a filter medium is arranged in the filter element 16, and the filter medium can be glass sand. In this way, the filter medium has good radiation protection performance and can extend the service life.

[0077] In some embodiments, please refer to Figure 1 and Figure 2 , the material mixing device 1 includes a regulating valve 17 arranged in the transmission pipeline 13, and the regulating valve 17 is used to regulate the flow rate of the inorganic salt solution in the transmission pipeline 13. In this way, by regulating the flow rate of the inorganic salt solution through the regulating valve 17, not only can the inorganic salt solution flow smoothly and steadily, maintaining the stability during the mixing process of the inorganic salt solution and the solid materials to improve the quality of the mixed product, but also overpressure in the transmission pipeline 13 or excessive flow rate of the inorganic salt solution can be prevented, reducing the safety risk.

[0078] In some embodiments, the flow rate of the inorganic salt solution in the transmission pipeline 13 is between 50 μL / min and 400 μL / min.

[0079] Exemplarily, the flow rate of the inorganic salt solution can be 50 μL / min (microliters per minute), 100 μL / min, 150 μL / min, 200 μL / min, 250 μL / min, 300 μL / min, 350 μL / min or 400 μL / min, etc. In this way, the flow rate of the inorganic salt solution can be adjusted according to requirements, maintaining good stability during the mixing process of the inorganic salt solution and the solid materials and improving the quality of the mixed product.

[0080] In some embodiments, please refer to Figure 1 and Figure 2 , the regulating valve 17 is arranged downstream of the filter element 16 in the transmission pipeline 13. In this way, by filtering out the solid impurities in the inorganic salt solution through the filter element 16, it is possible to prevent the solid impurities from accumulating and blocking in the regulating valve 17, affecting the flow of the inorganic salt solution.

[0081] In the related art, the material mixing equipment includes a stirring device arranged in the mixing chamber 12a. The inorganic salt solution is usually poured in at one time or flows into the mixing chamber 12a quickly and is stirred and mixed by the stirring device.

[0082] In some embodiments, the inorganic salt solution from the transmission pipeline 13 drips into the mixing chamber 12a.

[0083] Dripping means that the inorganic salt solution drops in the form of droplets.

[0084] In this way, by controlling the mixing process of the inorganic salt solution and the solid material in a dripping manner, on the one hand, the amount of the inorganic salt solution added each time can be more precisely controlled. Especially for inorganic salts that are prone to crystallization or agglomeration, slow dripping can reduce the aggregation phenomenon of the inorganic salts. Moreover, the mixing process of the inorganic salt and the solid material is relatively stable, thereby improving the consistency of the mixed product. On the other hand, by dripping, the flow rate and flow volume of the inorganic salt solution can be slowed down, which can prevent the inorganic salt solution from splashing out of the mixing chamber 12a. On the further hand, there is no need to stir and mix through a stirring device as in the related art. The inorganic salt solution and the solid material can still be mixed in a passive manner, which can not only eliminate the stirring device, but also avoid cracks in the second container 12 caused by mechanical stress generated by mechanical equipment, reducing the risk of radiation leakage.

[0085] In some embodiments, the liquid level of the inorganic salt solution in the mixing chamber 12a is not higher than the highest point of the solid material.

[0086] It should be understood that when the liquid level of the inorganic salt solution is higher than the highest point of the solid material, the concentration of the inorganic salt solution is uneven, and more inorganic salts will gather above the solid material. After the solvent of the inorganic salt solution evaporates, the inorganic salts above the solid material are likely to form a thin shell covering the top and its surrounding parts of the solid material, resulting in the inorganic salts being unable to be evenly adsorbed on the solid material and / or in the gaps of the solid material, affecting the consistency of the mixed product.

[0087] By controlling the flow rate and flow volume of the inorganic salt solution entering the mixing chamber 12a, the liquid level of the inorganic salt solution will not submerge the solid material. In this way, the inorganic salts of the inorganic salt solution can be relatively evenly distributed on the periphery of the solid material. After the solvent evaporates, the inorganic salts can be relatively evenly adsorbed on the solid material without aggregating on the top and its surrounding parts of the solid material.

[0088] In one embodiment, during the mixing process of the inorganic salt solution and the solid material, the liquid level of the inorganic salt solution in the mixing chamber 12a is flush with the highest point of the solid material.

[0089] In some embodiments, please refer to Figure 1 and Figure 2 , the material mixing device 1 includes a heating element 18, and the heating element 18 heats the mixing chamber 12a to evaporate the solvent of the inorganic salt solution.

[0090] Exemplarily, please continue to refer to Figure 1 and Figure 2, the second container 12 is supported on the heating element 18, and the heating element 18 plays a supporting role for the second container 12 to maintain the stability of the second container 12. By heating the solvent of the inorganic salt solution with the heating element 18, the precipitation rate of the inorganic salt can be increased, thereby increasing the mixing rate of the inorganic salt and the solid material and improving the production efficiency.

[0091] In some embodiments, the solid material is in granular form, and the particle size of the solid material is not greater than 0.1 mm. Exemplarily, the particle size of the solid material can be 0.01 mm (millimeter), 0.02 mm, 0.04 mm, 0.06 mm, 0.08 mm or 0.1 mm, etc. According to production requirements, solid materials with different particle sizes can be used.

[0092] Exemplarily, the granular solid materials are stacked together to form a pile, and there are gaps formed between the granular solid materials. In this way, the inorganic salts of the inorganic salt solution can enter the gaps, so as to be evenly adsorbed on the surface of the solid material and can also fill the gaps. It can be understood that for piles of the same mass, the smaller the particle size of the solid material, the larger the total surface area of the pile, and the more easily the inorganic salts can be adsorbed on the surface of the solid material and / or fill the gaps between the solid materials, thereby improving the quality of the mixed product.

[0093] In one embodiment, the solid material is in fine granular form, i.e., powder form. In this way, the mixing effect between the inorganic salt and the solid material is better.

[0094] Combined with the foregoing description, the mixing process of the inorganic salt solution and the solid material will be described in more detail below with specific embodiments:

[0095] Step 1: Prepare 5 g (grams) of water-soluble salt and 5 g of solid material, wherein the solid material is a solid oxide and is in powder form.

[0096] Step 2: Dissolve 5 g of water-soluble salt in 10 ml (milliliters) of deionized water to obtain an inorganic salt solution. The inorganic salt solution is filled into the liquid storage cavity 11a and capped. The first container 11 is a bottle-shaped container. Load 5 g of solid material into the mixing cavity 12a and place it on the heating plate. The second container 12 is a dish-shaped container.

[0097] Step 3: Send the components of the material mixing device 1 into the radioactive hot cell 2 and assemble them. Among them, the transmission pipeline 13 is a glass pipeline, and the regulating valve 17 is a ball valve. After assembly, the regulating valve 17 is in a closed state.

[0098] Step 4: Set the temperature of the heating plate to 120 °C (degrees Celsius), open the regulating valve 17, and adjust the flow rate of the inorganic salt solution to 100 μL / min. The inorganic salt solution is completely dripped within 100 minutes. After dripping, continue heating for 20 minutes until the aqueous solution completely evaporates, obtaining a mixed product of 5 g of water-soluble salt and 5 g of solid oxide.

[0099] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "other embodiments" and "exemplary" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0100] The various embodiments / implementations provided by the present application can be combined with each other without contradiction. The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A material mixing device, characterized in that: For use in a radioactive hot cell, the material mixing device comprises: A first container is formed with a liquid storage cavity and a liquid outlet communicated with the liquid storage cavity, wherein the liquid storage cavity is used to hold an inorganic salt solution; A second container is formed with a mixing chamber and a liquid inlet communicated with the mixing chamber, wherein the mixing chamber is used to contain solid materials; A transmission pipeline is connected to the liquid outlet and the liquid inlet; the first container and the second container are spaced apart in the up-down direction, and the height of the liquid outlet is higher than the height of the liquid inlet.

2. The material mixing device according to claim 1, characterized in that: The material mixing device comprises a non-seepage joint, and at least one of the liquid outlet and the liquid inlet is connected to the transmission pipeline through the non-seepage joint.

3. The material mixing device according to claim 1, characterized in that: The material mixing device comprises an air pressure balance component, and the air pressure balance component is connected with the liquid storage cavity and the atmosphere.

4. The material mixing device according to claim 1, characterized in that: The material mixing device comprises a filter element, and the filter element is arranged in the transmission pipeline.

5. The material mixing device according to claim 1, characterized in that: The material mixing device comprises a regulating valve arranged on the transmission pipeline, and the regulating valve is used to adjust the flow rate of the inorganic salt solution in the transmission pipeline.

6. The material mixing device according to claim 5, characterized in that: The flow rate of the inorganic salt solution in the transmission pipeline is between 50 μL / min and 400 μL / min.

7. The material mixing device according to claim 5, characterized in that: The material mixing device comprises a filter element arranged in the transmission pipeline, and the regulating valve is arranged in the transmission pipeline and is located downstream of the filter element.

8. The material mixing device according to claim 1, characterized in that: The inorganic salt solution from the transmission pipeline is dripped into the mixing chamber; and / or, The liquid level of the inorganic salt solution in the mixing chamber is not higher than the highest point of the solid material.

9. The material mixing device according to claim 1, characterized in that: The material mixing device comprises a heating element, and the heating element heats the mixing chamber to evaporate the solvent of the inorganic salt solution.

10. The material mixing device according to any one of claims 1 to 9, characterized in that: The solid material is in granular form, and the particle size of the solid material is not greater than 0.1 mm.

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