A real-time material taking and transferring device and a material taking method

Abstract

The application provides a real-time material taking and transferring device and a material taking method, and relates to the field of material taking devices. The real-time material taking and transferring device is used for connecting a drying device and a material bin, and comprises a material transferring bin, a protective gas source, a material taking box, gloves and a third door mechanism. The material transferring bin is internally limited to a material transferring cavity. The protective gas source is connected to the material transferring cavity through a protective gas path. The material taking box is internally limited to a material taking cavity. The material taking cavity is respectively connected to the outside and the material transferring cavity through a first opening and a second opening. The first opening and the second opening are respectively provided with a first door mechanism and a second door mechanism which can be opened and closed. The glove opening part edge is airtightly connected to an operation opening which is arranged on the material taking box. The third door mechanism is arranged in the material taking box and can selectively separate the material taking cavity to form a first subspace and a second subspace which are respectively connected to the first opening and the second opening. The material taking box is further provided with a gas exchange opening which is connected to the first subspace. The gas exchange opening is connected to a replacement gas source through a replacement gas path. The device can take material in real time and avoid material moisture return during material taking.

Description

Technical Field

[0001] The present invention relates to the field of material taking devices, and in particular to a real-time material taking and transferring device and a material taking method. Background Art

[0002] After deep drying the material, the drying kiln typically transfers the dried material to a sealed silo, preventing it from coming into contact with air. For example, in the production of lithium-ion batteries, lithium fluoride, one of the raw materials for the positive electrode, is susceptible to moisture and agglomeration due to contact with air. Therefore, the lithium fluoride must be dried to below 200 ppm before use. Raw materials with moisture contents below several hundred ppm are highly susceptible to moisture from contact with air. Therefore, the kiln typically dries the lithium fluoride in a sealed environment and then transfers the dried lithium fluoride to the silo via a sealed transfer silo.

[0003] In order to check whether the drying condition of the drying kiln meets the standards, it is necessary to take out the materials at the discharge end of the drying kiln to detect whether the moisture content of the materials is below the target moisture content, and the materials dried in the drying kiln at different time periods should be taken out in batches in real time for multiple tests (for example, during the drying process, the materials output by the drying kiln at a certain time point should be taken out for testing every hour). The existing drying kiln material collection methods include mechanical automatic material collection and manual material collection. Mechanical automatic material collection is limited by the precision, accuracy, and stability of the device. It is difficult to ensure that the mechanical structure is isolated from the outside air during the sampling action, and automatic material collection may cause materials output at different time periods to pile up together, affecting the stability of the test results. Manual material collection also has operational difficulties and it is difficult to ensure isolation from the outside air. Therefore, it is necessary to redesign the structure of the transfer bin part. Summary of the Invention

[0004] In order to overcome the deficiencies in the prior art, the present application provides a real-time material transfer device for connecting a drying device and a silo, comprising:

[0005] A transfer bin defines a transfer cavity therein and has a feed port and a discharge port, wherein the feed port is arranged to connect to the discharge end of the drying device, and the discharge port is arranged to communicate with the bin;

[0006] A protective gas source is connected to the material transfer chamber through a protective gas path, and a protective gas valve is provided on the protective gas path;

[0007] A material taking box defines a material taking cavity therein, wherein the material taking cavity is connected to the outside and the material transfer cavity through a first opening and a second opening respectively, and the first opening and the second opening are respectively provided with a first door mechanism and a second door mechanism that can be opened and closed;

[0008] A glove, wherein the edge of the opening of the glove is airtightly connected to the operating port provided on the material taking box, and the glove can extend to the material taking cavity;

[0009] a third door mechanism located inside the material taking box and selectively dividing the material taking cavity to form a first subspace and a second subspace respectively communicating with the first opening and the second opening;

[0010] The material taking box is further provided with a ventilation port connected to the first subspace, and the ventilation port is connected to a replacement gas source through a replacement gas path, and a replacement gas valve is provided on the replacement gas path.

[0011] In a possible embodiment, the ventilation port includes at least one air inlet and at least one air outlet, the air inlet is connected to the replacement gas source through a first replacement branch, and the air outlet is connected to the outside world through a second replacement branch; a first replacement gas valve and a second replacement gas valve are respectively provided on the first replacement branch and the second replacement branch.

[0012] In a possible implementation manner, opposite ends of the second replacement gas path are respectively connected to the air extraction pump and the first subspace.

[0013] In a possible embodiment, a screen is provided on the third door mechanism, and the screen is configured to perform gas-solid separation on the airflow carrying the material.

[0014] In a possible embodiment, the material taking box includes an extending portion partially located in the material transfer cavity, and a drop hole communicating with the material transfer cavity is formed at the bottom of the extending portion.

[0015] In a possible embodiment, the drying device includes a conveyor belt passing through the discharge port, and a portion of the conveyor belt passes through the transfer bin; the real-time material taking and transfer device includes an air curtain tube arranged at the outlet of the conveyor belt.

[0016] The present application also provides a material taking method, which uses the above-mentioned real-time material taking and transferring device to take materials, and in an initial state, the first door mechanism, the second door mechanism, and the third door mechanism are all closed. The material taking method comprises the following steps: a. a protective gas source fills a protective atmosphere into a material transfer chamber through a protective gas path to maintain a positive pressure in the material transfer chamber; opening the first door mechanism, placing a material bottle into the material taking chamber, and closing the first door mechanism;

[0017] b. continuously supplying a protective atmosphere to the first subspace through the replacement gas path to replace the air in the material taking cavity;

[0018] c. Opening the second door mechanism and the third door mechanism by using the glove, loading the material into the bottle, placing the bottle in the first subspace, and closing the second door mechanism and the third door mechanism;

[0019] d. Open the first door mechanism, take out the bottle, and close the first door mechanism.

[0020] In a possible implementation, step c includes: inputting fluid protective gas into the material taking chamber so that the air pressure in the material taking chamber is lower than the air pressure in the material transfer chamber.

[0021] In a possible embodiment, step c includes: placing the material bottle in the second subspace, closing the third door mechanism, and using the screen to separate the fluidity-protecting gas carrying the material from the solid state, so that the material falls only into the second subspace.

[0022] In a possible implementation, step c includes: after sealing the bottle, sweeping excess material in the material taking box into the transfer bin.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] Before taking out the material, the first, second and third door mechanisms of this device are all in the closed state; the protective gas source first continuously inputs the protective atmosphere into the transfer bin through the protective gas path, so that the transfer chamber always maintains a positive pressure to prevent the outside air from invading the transfer chamber;

[0025] When it is necessary to take out materials, the user opens the first door mechanism, places the material bottle into the material taking chamber, closes the first door mechanism, and continuously inputs protective atmosphere into the first subspace through the ventilation port and the replacement air path to replace the air in the first subspace, thereby preventing the air originally present in the first subspace from contaminating the materials;

[0026] The user then uses gloves to manipulate the object in the material extraction chamber, opens the second door mechanism and the third door mechanism, allowing the material output by the drying device during this period to enter the material extraction chamber through the second opening, and then puts the material into the material bottle and places the material bottle in the first subspace; closes the second door mechanism and the third door mechanism to block the subsequent material output by the drying device from entering the material extraction chamber and prevents air from entering the material transfer chamber, and then opens the first door mechanism to remove the material bottle;

[0027] In summary, during the material taking process, when the first door mechanism is opened, the second and third door mechanisms can form an airtight partition; before the first door mechanism is opened, the second and third door mechanisms are closed first by gloves to prevent air from intruding; therefore, neither the outside air nor the original air in the first subspace can enter the material storage area through the second subspace, thereby preventing the material in the material storage area from contacting the air and becoming damp, and the material bottle can be sealed in the material taking cavity to prevent the taken-out material from getting damp. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 Shows a structural schematic diagram of a real-time material taking and transferring device;

[0030] Figure 2 A schematic diagram of the material taking chamber and the material transfer chamber is shown;

[0031] Figure 3 A front view of the reclaim box is shown;

[0032] Figure 4 A side view schematically shows the internal structure of the reclaiming glove box;

[0033] Figure 5 A top view of the reclaim box is shown;

[0034] Figure 6 shows a schematic structural diagram of the second door mechanism;

[0035] Figure 7 Shown Figure 1 A partial enlarged view of point A in the middle;

[0036] Figure 8 shows a schematic structural diagram of the third door mechanism;

[0037] Figure 9 A schematic structural diagram of the reclaim box bottom plate is shown.

[0038] Description of main component symbols:

[0039] 100 - transfer bin; 110 - transfer chamber; 120 - inlet; 130 - outlet; 200 - taking bin; 210 - taking chamber; 211 - first sub-space; 212 - second sub-space; 220 - first opening; 230 - second opening; 240 - baffle; 250 - air exchange opening; 251 - air inlet; 252 - air outlet; 260 - material dropping hole; 270 - observation window; 280 - operation opening; 290 - glove; 300 - first door mechanism; 310 - movable door; 320 - caliper structure; 400 - conveying belt; 500 - third door mechanism; 510 - first partition door; 520 - second partition door; 530 - door latch bolt structure; 600 - protective gas path; 700 - replacement gas path; 710 - first replacement branch; 711 - first replacement gas valve; 720 - second replacement branch; 721 - second replacement gas valve; 800 - air curtain pipe; 900 - second door mechanism; 1000 - material receiving chute; 1100 - screen. DETAILED DESCRIPTION

[0040] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like reference numerals and characters designate the same or like components throughout the views. The embodiments described below are illustrative only, and are not intended to be limiting on the present application.

[0041] In the present application, unless specifically stated and limited otherwise, a first feature is "on", "above", or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "above", "over", and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature "below", "under", and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] Embodiment One

[0043] After deep drying of the material, the drying kiln generally transfers the dried material to a sealed bin one by one, and prevents the material from contacting with air in the process. For example, in the process of preparing lithium ion batteries, lithium fluoride, one of the positive electrode raw materials, is easy to agglomerate, so the moisture content of lithium fluoride is required to be dried to below ppm before use. Raw materials with moisture content below several hundred ppm are easy to return to moisture due to contact with air. Therefore, the drying kiln generally dries lithium fluoride in a sealed environment, and then transfers the dried lithium fluoride to the bin through a sealed transfer bin.

[0044] To verify that the drying kiln is operating as intended, materials must be removed from the kiln discharge port to test whether their moisture content is below the target. Furthermore, materials dried in different time periods should be removed in batches for real-time testing (for example, materials discharged from the kiln at a specific time should be removed and tested every hour during the drying process). Manual material removal can easily lead to air entering the transfer silo, causing the dehydrated material discharged from the kiln to become damp and affecting the humidity inside the kiln. Therefore, a redesign of the transfer silo structure was necessary.

[0045] In order to solve the current problem that the material is easily dampened when taking out the material due to the unreasonable structure of the transfer bin 100 and affects the humidity of the internal environment of the drying device, this embodiment provides a real-time material taking and transfer device. Figure 1 and Figure 4 A real-time material transfer device is used to connect a drying device and a silo, including: a transfer silo 100, a protective gas source, a material transfer box 200 and gloves 290.

[0046] The transfer bin 100 defines a transfer chamber 110 and has an inlet 120 and a discharge 130. The inlet 120 is located at the discharge end of the drying device, while the discharge 130 is located at the connection to the silo. Discharge 130 is preferably located at the bottom of the transfer bin 100, allowing the deep-dried material to enter the transfer chamber 110 through the inlet 120 and then fall into the silo through the discharge 130.

[0047] See also Figure 1 The protective gas source (not shown) is connected to the transfer chamber 110 through the protective gas circuit 600, which is used to fill the transfer chamber 110 with a protective atmosphere. The protective atmosphere can be nitrogen, and the protective gas source can be a nitrogen bottle. The structural form of the protective gas circuit 600 is not specifically limited, and a PVC hose or a stainless steel pipe can be used as part of the protective gas circuit 600. In some possible embodiments, a stainless steel air injection pipe is extended into the transfer chamber 110, and a plurality of air holes are opened in the portion of the stainless steel air injection pipe extending into the transfer chamber 110. The stainless steel air injection pipe is connected to the nitrogen bottle through a PVC hose.

[0048] See also Figure 4The retrieving box 200 defines a retrieving chamber 210, which communicates with the outside world and the transfer chamber 110 via a first opening 220 and a second opening 230, respectively. The first opening 220 and the second opening 230 are respectively provided with a first door mechanism 300 and a second door mechanism 900, which can be opened and closed. Specifically, the first opening 220 and the second opening 230 are located on opposite sides of the retrieving box 200. This does not necessarily require these two sides to be opposite or adjacent; it only requires that the first opening 220 and the second opening 230 be located on different sides of the retrieving box 200. The first door mechanism 300 is opened directly by an operator to retrieve items from the retrieving chamber 210 and, when closed, seals the first opening 220. The second door mechanism 900, when opened, allows materials in the transfer chamber 110 to enter the retrieving box 200, or facilitates the user to retrieve materials through the second opening 230. The retrieving box 200 can be made of plastic or stainless steel, with no particular limitation as long as the material is not breathable.

[0049] See also Figure 3 and Figure 4 The edge of the opening of the glove 290 is airtightly connected to the operating port 280 provided on the material taking box 200, so that the glove 290 can extend to the material taking chamber 210. Specifically, the glove 290 is preferably a rubber glove 290 with good flexibility and high stretchability. The glove 290 extension port is exposed to the outside, and the user extends his hand into the glove 290 to operate the structures and items in the material taking chamber 210. The operating port 280 can be provided on the first door mechanism 300, or on other side walls of the material taking box 200. However, considering the convenience of the user's operation, the operating port 280 should not be on the same side wall as the second opening 230. In some preferred embodiments, the finger portion of the glove 290 can at least extend to the position of the second door mechanism 900 to facilitate the user to take materials and open and close the second door mechanism 900.

[0050] See also Figure 4 The third door mechanism 500 is located inside the material dispensing box 200 and selectively divides the material dispensing chamber 210 to form a first subspace 211 and a second subspace 212, which are connected to the first opening 220 and the second opening 230, respectively. Specifically, selective division means that the third door mechanism 500 is also a switchable structure. Only when the third door mechanism 500 is closed can the material dispensing chamber 210 be divided to form the mutually independent second subspace 212 and first subspace 211. The third door mechanism 500 is used to prevent the material on one side of the material transfer chamber 110 from contacting the air. Therefore, the third door mechanism 500 is only allowed to open when the first door mechanism 300 is closed and the air in the first subspace 211 is replaced with an absolutely dry gas (such as nitrogen).

[0051] See also Figure 1The reclaim box 200 is also provided with a ventilation port 250 connected to the first subspace 211. The ventilation port 250 is connected to a replacement gas source (not shown) via a replacement gas line 700. Specifically, the replacement gas source may be a nitrogen cylinder, and the replacement gas line 700 may be a PVC hose. The ventilation port 250 is provided in a structural portion of the reclaim box 200 that is connected to the first subspace 211. The ventilation port 250 is used to replace the air originally present in the first subspace 211. During operation, a dry protective atmosphere is introduced into the first subspace 211 through the ventilation line to form an airtight partition within the reclaim box 200. In some possible embodiments, there is only one ventilation port 250, and air is first extracted / exhausted from the first subspace 211 through the ventilation port 250, and then the dry protective atmosphere is introduced into the first subspace 211 through the ventilation port 250.

[0052] Before taking out the material, the first, second and third door mechanisms 500 of the device are all in the closed state; the protective gas source first continuously inputs the protective atmosphere into the transfer bin 100 through the protective gas path 600, so that the transfer chamber 110 always maintains a positive pressure to prevent the outside air from invading the transfer chamber 110;

[0053] When it is necessary to take out materials, the user opens the first door mechanism 300, places the material bottle into the material taking chamber 210, closes the first door mechanism 300, and continuously inputs the protective atmosphere into the first subspace 211 through the ventilation port 250 and the replacement gas path 700 to replace the air in the first subspace 211, thereby preventing the air originally in the first subspace 211 from contaminating the materials.

[0054] The user then uses the glove 290 to operate the object in the material extraction chamber 210, opens the second door mechanism 900 and the third door mechanism 500, and allows the material output by the drying device during this period to enter the material extraction chamber 210 through the second opening 230. The material is then loaded into the material bottle and placed in the first subspace 211. The user then closes the second door mechanism 900 and the third door mechanism 500 to prevent the subsequent material output by the drying device from entering the material extraction chamber 210, so as to prevent the next material from mixing with the current material and to prevent air from entering the material transfer chamber 110. The user then opens the first door mechanism 300 to remove the material bottle.

[0055] In summary, during the material taking process, when the first door mechanism 300 is opened, the second and third door mechanisms 500 can form an airtight partition; before the first door mechanism 300 is opened, the second and third door mechanisms 500 are closed first by the gloves 290 to prevent air from intruding; therefore, neither the outside air nor the original air in the first subspace 211 can enter the material transfer chamber 110 through the second subspace 212, thereby avoiding the material in the material transfer chamber 110 from contacting the air and becoming damp, and the material bottle can be sealed in the material taking chamber 210 to prevent the material from getting damp.

[0056] In some possible embodiments, a long-handled material spoon can be placed in the material box 200 in advance, and the material bottle can be placed in the material box 200. The staff can operate the material spoon to extend it into the transfer bin 100 from the second opening 230 to retrieve the material. However, in this case, it is more troublesome to operate the material spoon, and the material spoon may fall into the transfer bin 100, causing the drying kiln to have to be shut down for maintenance.

[0057] The protective gas circuit 600 and the replacement gas circuit 700 are respectively provided with a protective gas valve and a replacement gas valve. By adjusting the opening of the gas valve, the amount of gas input into the material taking chamber 210 and / or the material transfer chamber 110 can be increased or decreased.

[0058] Please refer to Figure 2 As can be seen in the figure, the second opening 230 is arranged toward the transfer chamber 110, and the height of the second opening 230 is slightly lower than the height of the feed inlet 120. When the air pressure in the transfer chamber 110 is greater than the air pressure in the material taking chamber 210, the material in the transfer chamber 110 will be blown into the material taking chamber 210 through the second opening 230, so that the user can directly take out the material in the material taking box 200 for testing. The amount of protective atmosphere input into the material taking chamber 210 and the transfer chamber 110 can be adjusted by the protective gas valve and the replacement gas valve, so that the air pressure in the transfer chamber 110 is higher than the air pressure in the material taking chamber 210. In some preferred embodiments, an air pressure flowmeter is provided on the protective gas circuit 600 and / or the replacement gas circuit 700 to assist in judging the flow rate of the gas introduced therein.

[0059] See also Figure 2 In some embodiments, the material taking box 200 includes a portion extending into the transfer chamber 110, and a drop hole 260 is formed at the bottom of the extending portion and is located in the transfer chamber 110. The drop hole 260 is used to allow the material in the material taking chamber 210 to fall back into the transfer chamber 110. When the user takes the material out of the material taking chamber 210, if there is some excess material in the material taking chamber 210, the user can sweep the material to the drop hole 260 to allow the excess material to fall back into the transfer chamber 110. In some preferred embodiments, the material taking box 200 is tilted toward the transfer chamber 110 so that the drop hole 260 is at the lowest point of the material taking chamber 210.

[0060] Please refer to Figure 3 and Figure 4In some embodiments, the ventilation port 250 includes at least one air inlet 251 and at least one air outlet 252. The air inlet 251 is connected to a replacement gas source via a first replacement branch 710, while the air outlet 252 is connected to the outside world via a second replacement branch 720. Both the first replacement branch 710 and the second replacement branch 720 are gas pipelines, and ventilation connectors are plugged into the air inlet 251 and the air outlet 252 to connect the first replacement branch 710 and the second replacement branch 720. When a dry protective atmosphere is introduced into the first subspace 211 through the air inlet 251, the air originally present in the first subspace 211 is squeezed out through the air outlet 252. After the air in the first subspace 211 is replaced, the third door mechanism 500 is opened.

[0061] Please refer to Figure 3 In some preferred embodiments, a first displacement gas valve 711 and a second displacement gas valve 721 are respectively provided on the first displacement branch 710 and the second displacement branch 720. By adjusting the opening of the valves on the first displacement branch 710 and the second displacement branch 720, the amount of gas entering or exiting the first subspace 211 is increased or decreased, thereby maintaining a positive pressure in the material extraction chamber 210. In some preferred embodiments, both the first displacement branch 710 and the second displacement branch 720 are provided with air pressure flowmeters.

[0062] In some embodiments, the air inlet 251 is opened at the top of the material box 200, and the air outlet 252 is opened at the bottom of the material box 200; nitrogen as a protective atmosphere enters the first subspace 211 and sinks, causing the air to be squeezed out from the air outlet 252.

[0063] In some embodiments, the opposite ends of the second replacement branch 720 are connected to the air pump and the first word space respectively. The air pump is used to complete the gas replacement in the material box 200, and the first door mechanism 300 is closed, and the second and third door mechanisms 500 are opened to extract air, so as to increase the pressure difference between the material box 200 and the transfer bin 100, so as to ensure that the material is blown into the material box 200 under the action of the pressure difference. Please refer to Figure 9 In these embodiments, the drop hole 260 is designed to be closable, such as by setting a slide groove structure in the middle of the bottom plate of the material box 200, and the drop hole 260 can be blocked by a baffle 240 slidably connected to the bottom plate. When the vacuum pump is pumping air, the baffle 240 is used to block the drop hole 260 to prevent part of the powder from being sucked into the material box 200 through the drop hole 260.

[0064] See also Figure 6In some embodiments, a screen 1100 is provided on the third door mechanism, and the screen 1100 is configured to perform gas-solid separation on the airflow carrying the material. The third door mechanism 500 includes a first partition door 510 and a second partition door 520. The opposite sides of the first partition door 510 and the second partition door 520 are pivotally connected to the inner wall of the material removal box 200; the first partition door 510 and the second partition door 520 are clamped to the material removal box 200 through a latch structure 530. The aperture of the screen 1100 is between 0.01 mm and 1 mm, and should be specifically adapted to the particle size of the material to be intercepted. Its material and mesh number are not limited. When the third door mechanism is closed, the screen 1100 can intercept the material particles in the second subspace to prevent the material from being sucked into the second displacement air path.

[0065] Specifically, the first partition door 510 and the second partition door 520 are both square structures and are generally coplanar, separating the material dispensing chamber 210. The edge of the first partition door 510 away from the second partition door 520 is hingedly connected to the inner wall of the material dispensing box 200, and the edge of the second partition door 520 away from the first partition door 510 is also hingedly connected to the inner wall of the material dispensing box 200. The latch structure 530 includes a latch fixedly connected to the first and second partition doors 510, 520. A stop groove corresponding to the latch is provided on the inner wall of the material dispensing box 200. When the third door mechanism 500 is closed, the latch engages the stop groove. When the third door mechanism 500 needs to be opened, the latch is withdrawn from the stop groove, pushing the first and second partition doors 510, 520 to rotate about their hinges. When the third door mechanism is open, the worker can place the bottle into the second subspace with the gloves; when the third door mechanism is closed, only the airflow of the filtered material particles can pass through the screen 1100 and enter the first subspace.

[0066] See also Figure 3 In some embodiments, the first door mechanism 300 includes a movable door 310 and a clamp structure 320. One side of the movable door 310 is pivotally connected to the edge of the sidewall of the reclaiming bin 200. The fixed end of the clamp structure 320 is mounted on the sidewall of the reclaiming bin 200, and the movable end of the clamp structure 320 is detachably engaged with the movable door 310. Specifically, one side of the movable door 310 is hingedly engaged to the edge of the sidewall of the reclaiming bin 200. The clamp structure 320 can be a quick-action clamp. When the quick-action clamp is no longer engaged with the movable door 310, the first door mechanism 300 can be opened by pulling the movable door 310 and rotating it about the hinge. When the movable door 310 opens or closes the opening of the reclaiming bin 200, the quick-action clamp clamps the movable door 310 to close the first door mechanism 300.

[0067] See also Figure 8 , the figure shows a schematic diagram of the structure of the second door mechanism 900. In some embodiments, the third door structure is similar to the second door mechanism 900 and is also a door structure with hinges.

[0068] See also Figure 5 In some embodiments, the removable box 200 is at least partially transparent relative to the removable cavity 210 to facilitate observation of the removable cavity 210 by the user. For example, an observation window 270 may be provided on the removable box 200, or a portion of the removable box 200 may be made of a transparent material. In some embodiments, the removable box 200 is fully transparent, such as being made entirely of a transparent rubber material.

[0069] See also Figure 1 and Figure 7 In some embodiments, the drying device includes a conveyor belt 400 that passes through the discharge port 130, with a portion of the conveyor belt 400 passing through the transfer bin 100. The real-time material transfer device includes an air curtain tube 800 arranged at the exit of the conveyor belt 400. The air curtain tube 800 and the nitrogen gas source are transported through a pipeline to achieve nitrogen delivery. The air curtain tube 800 has multiple through-holes, and the nitrogen generated by the nitrogen gas source is ejected through the through-holes to form an air curtain to prevent external air from invading the transfer chamber 110. The air curtain tube 800 can eject air downwardly and / or upwardly, which is not limited here.

[0070] Please refer to Figure 2 In some embodiments, the transfer bin 100 includes a receiving chute 1000 for receiving materials, and the lower section of the receiving chute 1000 is tilted toward the discharge port 130 to guide the materials to the discharge port 130; the receiving surface of the receiving chute 1000 is a flat smooth metal surface, and the materials slide on the receiving surface, and the second opening 230 is arranged toward the receiving surface on the receiving chute 1000 so that the materials on the receiving surface can enter the material taking chamber 210 through the second opening 230 under the action of the air pressure difference.

[0071] Example 2

[0072] This embodiment provides a material taking method, which uses the real-time material taking and material transfer device in the first embodiment to take materials. The materials referred to in this embodiment are powdered materials (such as lithium fluoride powder). The material taking method is carried out in the following steps.

[0073] In the initial state, the first, second and third door mechanisms are all in the closed state.

[0074] The protective gas source fills the material transfer chamber 110 with protective atmosphere through the protective gas line 600 , so that the material transfer chamber 110 maintains a positive pressure and prevents air from intruding into the material transfer chamber 110 .

[0075] Open the first door mechanism 300, place the material bottle into the material removal chamber 210, close the first door mechanism 300, and continuously input a protective atmosphere into the first subspace 211 through the replacement gas path 700 to replace the air in the first subspace 211; specifically, the replacement gas path 700 will continuously input a protective atmosphere into the first subspace 211, so that the air originally existing in the first subspace 211 is continuously discharged to the outside through the ventilation port 250; in some preferred embodiments, the process of inputting and outputting gas can be carried out by respectively setting an air inlet 251 and an air outlet 252 on the material removal box 200.

[0076] After the air in the first subspace 211 is replaced with a protective atmosphere, the second door mechanism 900 and the third door mechanism 500 are opened through the glove 290. The material bottle is placed in the second subspace and the third door mechanism is closed. The vacuum pump extracts air through the second replacement air path, and the gas in the material transfer chamber is sucked into the material collection chamber to form a fluid protective gas, so that the air pressure in the material collection chamber is lower than the air pressure in the material transfer chamber; the material is blown into the material collection chamber through the second opening under the action of the air pressure difference; the screen 1100 separates the fluid protective gas carrying the material into gas and solid, so that the material falls only into the second subspace, and the material bottle receives part of the material during this period. Specifically, the air pressure difference between the material transfer chamber and the material collection chamber can be between 10Pa and 100Pa.

[0077] After the material bottle contains enough material, the vacuum pump stops running. After the air pressure in the material taking chamber and the material transfer chamber is balanced, the third door mechanism is opened by gloves, the material bottle is sealed and the excess material in the material taking box is swept into the transfer bin through the drop hole to avoid the excess material from mixing with the next material taking, which will affect the material inspection results in different time periods.

[0078] Place the material bottle in the first subspace, close the second and third door mechanisms, open the first door mechanism, take out the material bottle, and close the first door mechanism.

[0079] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. 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, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0080] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A real-time material transfer device for connecting a drying device and a silo, characterized in that: include: A transfer bin defines a transfer cavity therein and has a feed port and a discharge port, wherein the feed port is arranged to connect to the discharge end of the drying device, and the discharge port is arranged to communicate with the bin; A protective gas source is connected to the material transfer chamber through a protective gas path, and a protective gas valve is provided on the protective gas path; A material taking box defines a material taking cavity therein, wherein the material taking cavity is connected to the outside and the material transfer cavity through a first opening and a second opening respectively, and the first opening and the second opening are respectively provided with a first door mechanism and a second door mechanism that can be opened and closed; A glove, wherein the edge of the opening of the glove is airtightly connected to the operating port provided on the material taking box, and the glove can extend to the material taking cavity; a third door mechanism located inside the material taking box and selectively dividing the material taking cavity to form a first subspace and a second subspace respectively communicating with the first opening and the second opening; The material taking box is further provided with a ventilation port connected to the first subspace, and the ventilation port is connected to a replacement gas source through a replacement gas path, and a replacement gas valve is provided on the replacement gas path.

2. The real-time material taking and transferring device according to claim 1, characterized in that: The ventilation port includes at least one air inlet and at least one air outlet, the air inlet is connected to the replacement air source through a first replacement branch, and the air outlet is connected to the outside through a second replacement branch; a first replacement air valve and a second replacement air valve are respectively provided on the first replacement branch and the second replacement branch.

3. The real-time material taking and transferring device according to claim 2, characterized in that: The opposite ends of the second replacement branch are respectively connected to the air extraction pump and the first subspace.

4. The real-time material taking and transferring device according to claim 1, characterized in that: The third door mechanism is provided with a screen, and the screen is configured to separate the airflow carrying the material into gas and solid.

5. The real-time material taking and transferring device according to claim 1, characterized in that: The material taking box includes an extending portion that is partially located in the material transfer cavity, and a material drop hole communicating with the material transfer cavity is opened at the bottom of the extending portion.

6. The real-time material taking and transferring device according to claim 1, characterized in that: The drying device includes a conveyor belt passing through the discharge port, and a portion of the conveyor belt passes through the transfer bin; the real-time material taking and transfer device includes an air curtain tube arranged at the outlet of the conveyor belt.

7. A material taking method, characterized in that: The real-time material reclaiming and material transfer device according to any one of claims 1 to 6 is used to reclaim materials, and in an initial state, the first door mechanism, the second door mechanism, and the third door mechanism are all closed. The reclaiming method includes the following steps: a. Open the first door mechanism, place the bottle into the material taking cavity, and close the first door mechanism; b. continuously supplying a protective atmosphere to the first subspace through the replacement gas path to replace the air in the material taking cavity; c. Opening the second door mechanism and the third door mechanism by using the glove, loading the material into the bottle, placing the bottle in the first subspace, and closing the second door mechanism and the third door mechanism; d. Open the first door mechanism, take out the bottle, and close the first door mechanism.

8. The material taking method according to claim 7, characterized in that: Step c includes: inputting fluid protective gas into the material taking chamber so that the air pressure in the material taking chamber is lower than the air pressure in the material transfer chamber.

9. The material taking method according to claim 7, characterized in that: Step c includes: placing the material bottle in the second subspace, closing the third door mechanism, and using the screen to separate the fluidity protection gas carrying the material from the solid state, so that the material falls only into the second subspace.

10. The material taking method according to claim 7, characterized in that: Step c includes: after sealing the bottle, sweeping the excess material in the material taking box into the transfer bin.

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