Powder-material conveying device and automatic batching method
Patent Information
- Application Number
- PCT/CN2024/119116
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-04
- Filing Date
- 2024-09-14
- Publication Date
- 2025-10-02
AI Technical Summary
Existing powder conveying devices are large in size in the left-right direction or the front-back direction, occupy a large area, require a large number of devices, and are expensive. In addition, the positive pressure conveying method is prone to powder leakage and high production costs.
The metering container, buffer container and stirring equipment structure are arranged from top to bottom, combined with negative pressure conveying, feeding screw and gas conveying components. The powder's own gravity and negative pressure conveying are used to reduce the equipment's footprint and cost, and precise control is achieved through pressure sensors and weighing devices.
It reduces the equipment footprint, reduces the number of equipment and costs, improves the accuracy and reliability of powder delivery, reduces the chance of powder agglomeration and leakage, and ensures the preparation quality of battery slurry.
Smart Images
Figure CN2024119116_02102025_PF_FP_ABST
Abstract
Description
Powder conveying device and automatic batching method
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This disclosure is based on and claims the priority of a Chinese patent application with application number 202410239933.X, application date March 4, 2024, and invention name “Powder Conveying Device and Automatic Batching Method”. The entire content of the Chinese patent application is hereby incorporated into this disclosure as a reference. Technical Field
[0003] The present disclosure relates to the field of battery technology, and in particular to a powder conveying device and an automatic batching method. Background Art
[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.
[0005] Battery cells are widely used in various electronic devices. Their electrode plates consist of a current collector and an active material layer coated on the surface of the current collector. The active material layer is formed by drying an active material slurry. The active material slurry consists of a powdered active material and a solvent, which are mixed uniformly to form the active material slurry. The powdered active material can be conveyed through a powder conveying device to form the active material slurry.
[0006] In the related art, the powder conveying device includes a feeding device, a metering tank, a sending tank, a buffer tank, and a stirring device, which are sequentially connected through pipelines. The metering tank is arranged above the sending tank, the buffer tank is arranged on the left or right side of the sending tank, and the stirring device is arranged below the buffer tank. The powder enters the sending tank through the feeding device and the metering tank. The sending tank uses a positive pressure conveying method to convey the powder to the buffer tank. The powder then enters the stirring device from the buffer tank for stirring. On the one hand, the powder conveying device is large in the left-right direction or the front-back direction, and each device occupies a large area, resulting in low space utilization. On the other hand, the number of devices used is large, the equipment cost is high, and the positive pressure conveying method has high production costs and is prone to increasing the probability of powder leakage.
[0007] Summary of the Invention
[0008] In order to solve the above technical problems, the present disclosure provides a powder conveying device and an automatic batching method. The powder conveying device has a small size in the left-right direction or the front-back direction, occupies a small area, has a small number of devices, and is low in cost.
[0009] The present disclosure is achieved through the following technical solutions.
[0010] A first aspect of the present disclosure provides a powder material conveying device, comprising:
[0011] Feeding device, used to remove powder bags and convey powder;
[0012] The metering container, buffer container and stirring equipment are arranged in sequence from top to bottom along the gravity direction of the powder. The input end of the metering container is connected to the output end of the feeding device, which is used to receive the powder and weigh the powder, and then transport the powder to the buffer container. The buffer container is used to mix the powder and feed it to the stirring equipment.
[0013] In the technical solution of the embodiment of the present disclosure, the loading device removes the powder bag without manual unpacking, the unpacking efficiency is high, the labor cost is reduced and the chance of direct contact between workers and powder is reduced; and the metering container, the buffer container and the stirring equipment are arranged in sequence from top to bottom, which is convenient for the transportation of the powder under the action of its own gravity, without the need for additional auxiliary conveying methods, and the conveying cost is low. The powder in the metering container is conveyed to the buffer container without the need for additional transfer equipment. In addition, it can also reduce the size of the powder conveying device in the left and right direction or the front and back direction, reduce the floor space, and increase the compactness of the layout of the powder conveying device.
[0014] In some embodiments, the powder conveying device includes a fan, and a first conveying pipe is provided between the feeding device and the metering container. The fan is used to generate negative pressure in the first conveying pipe so that the powder of the feeding device enters the metering container through the first conveying pipe under the action of negative pressure.
[0015] In the technical solution of the embodiment of the present disclosure, the powder of the feeding device is transported to the metering container through the first conveying pipe by means of negative pressure conveying. The powder can flow in a dispersed state under the action of negative pressure, reducing the probability of the powder agglomerating during the conveying process. Moreover, during the flow of the powder along the first conveying pipe, the powder can collide and rub against the pipe wall of the first conveying pipe, and the powders can also collide and rub against each other, so that the powder can be further broken up, reducing the agglomeration of the powder input into the metering container, and facilitating the metering container to accurately control the weight of the received powder; in addition, negative pressure conveying can also reduce the probability of powder adhering to the first conveying pipe, reduce powder waste, and increase powder conveying efficiency.
[0016] In some embodiments, a second conveying pipe is provided between the metering container and the buffer container, and the metering container is provided with a feeding screw, which is used to transport the powder in the metering container to the buffer container through the second conveying pipe.
[0017] In the technical solution of the embodiment of the present disclosure, the powder in the metering container is stirred by the feeding screw, and the feeding screw breaks up the lumps to make the powder dispersed. The powder flows along the preset trajectory under the push of the feeding screw and enters the second conveying pipe. The powder entering the second conveying pipe can enter the cache container under the action of its own gravity. In this way, the powder can be transported from the metering container to the cache container, reducing the transportation cost.
[0018] In some embodiments, the powder conveying device includes a gas conveying component, which is connected to the second conveying pipeline and is used to input compressed gas into the second conveying pipeline to convey the residual powder in the feeding screw and the second conveying pipeline to the buffer container.
[0019] In the technical solution of the embodiment of the present disclosure, a gas conveying component is provided to input compressed gas into the second conveying pipe, so that the residual powder attached to the discharge screw and the pipe wall of the second conveying pipe enters the buffer container under the action of the compressed gas, thereby reducing the deviation between the powder conveyed into the buffer container by the metering container and the target weight, and increasing the working reliability of the powder conveying device.
[0020] In some embodiments, the powder conveying device includes a supporting platform, which includes a first platform, a second platform, and a third platform arranged from top to bottom, and the first platform, the second platform, and the third platform respectively support the metering container, the buffer container, and the stirring equipment. The loading device is located on one side of the supporting platform along the first direction, wherein the first direction is perpendicular to the gravity direction of the powder.
[0021] In the technical solution of the disclosed embodiment, the support platform is used to provide support for the metering container, buffer container, and stirring device, allowing the metering container, buffer container, and stirring device to operate stably and increasing the reliability of the powder conveying device. The loading device is arranged on the side of the support platform that is different from the direction of gravity of the powder. This can make the layout of the powder conveying device more reasonable, and the overall height of the powder conveying device is not too high, which can reduce the height requirements of the layout site. At the same time, it also reduces the possibility that the loading device is arranged above the metering container and affects the metering container's accurate weighing of the powder.
[0022] In some embodiments, the powder conveying device includes a first pressure sensor, which is arranged in the metering container and is used to detect the pressure in the metering container; and / or, the powder conveying device includes a second pressure sensor, which is arranged in the buffer container and is used to detect the pressure in the buffer container.
[0023] In the technical solution of the embodiment of the present disclosure, the first pressure sensor can reflect the weight of the powder contained in the metering container in real time. When the powder is conveyed to the buffer container, the value reflected by the first pressure sensor changes, and the weight of the conveyed powder is monitored in real time, thereby achieving accurate conveyance of the powder from the metering container to the buffer container. The second pressure sensor can reflect the weight of the powder contained in the buffer container in real time. When the powder is received from the metering container, the value reflected by the second pressure sensor changes, and the weight of the received powder is monitored in real time to compare the difference between the received powder and the target weight. If the difference is within a reasonable range, it is determined that the material unloading is complete.
[0024] In some embodiments, the powder conveying device includes a mixing mechanism and a weighing device, which are arranged in a buffer container. The mixing mechanism is used to mix the powder in the buffer container, and the weighing device is used to measure the weight of the powder stored in the buffer container.
[0025] In the technical solution of the embodiment of the present disclosure, a mixing mechanism and a weighing device are provided. The mixing mechanism enables the various powders in the cache container to be evenly distributed and in a dispersed state, thereby reducing the chance of agglomeration and increasing the reliability of battery slurry preparation. The weighing device can determine the weight of the powder stored in the cache container to keep the received powder and the target weight within a reasonable range, thereby increasing the accuracy of the weight of the powder received by the cache container.
[0026] A second aspect of the present disclosure provides an automatic batching method, which is applied to a powder conveying device in any embodiment of the present disclosure. The automatic batching method includes:
[0027] Determine that the mixing equipment meets the material dropping conditions and control the buffer container to drop the material into the mixing equipment;
[0028] The blanking conditions include: the mixing equipment is in an unloaded state.
[0029] In the above technical solution, if the mixing equipment is short of material, the buffer container can quickly replenish powder to the mixing equipment so that the mixing equipment can continuously produce battery slurry and increase production efficiency.
[0030] In some embodiments, after controlling the buffer container to drop materials into the stirring device, the automatic batching method includes:
[0031] Determine whether the cache container is in a cleared state;
[0032] If so, the metering container is controlled to feed the material to the buffer container.
[0033] In the above technical solution, when the buffer container is in the zero state, the metering container can transport powder to the buffer container under the action of the feeding screw, so that the buffer container can be quickly replenished with powder after the feeding to the mixing equipment is completed, in preparation for the next pulping of the mixing equipment. In this way, regardless of whether the mixing equipment is in working condition, powder can be stored in the buffer container to meet the production capacity requirements of uninterrupted pulping of the mixing equipment.
[0034] In some embodiments, determining whether the cache container is in a clear state includes:
[0035] Determine whether the cache container is in an empty state;
[0036] If so, a first duration during which the cache container is in an empty state is recorded. If the first duration is not less than a first preset duration, it is determined that the cache container is in a cleared state.
[0037] In the above technical solution, the empty time of the buffer container is recorded, which can reduce the probability of misjudging the load weight in the buffer container, so as to ensure that the buffer container is completely out of material, and then control the metering container to feed the buffer container, so that the weight of the powder stored in the buffer container can be kept relatively consistent each time, thereby increasing the qualification of the slurry produced by the mixing equipment.
[0038] In some embodiments, the automatic batching method includes:
[0039] If the cache container is in a loaded state, determining that the cache container is in an uncleared state;
[0040] Controls the cache container to output alarm information.
[0041] In the above technical solution, after the buffer container drops materials into the stirring equipment, if the buffer container is always in a loaded state rather than an empty state, there may be a problem in dropping materials from the buffer container into the stirring equipment, and it is necessary to confirm whether the buffer container has a fault. At this time, the buffer container is controlled to output an alarm message to confirm the status of the buffer container to avoid affecting the pulping qualification.
[0042] In some embodiments, after controlling the metering container to feed the material into the buffer container, the automatic batching method includes:
[0043] Determine whether the load of the metering container is greater than a preset value;
[0044] If not, the feeding device is controlled to feed the material to the metering container, wherein the preset value is not less than the weight of the powder material required by the buffer container in a single time.
[0045] In the above technical solution, when the load of the metering container is less than the preset value, the weight of the powder stored in the metering container cannot meet the weight of the powder required by the cache container, then the metering container is judged to be out of material, and the loading device is controlled to convey the powder to the metering container so that the powder stored in the metering container can meet the weight of the powder required by the cache container, so that when the cache container needs material, the powder stored in the metering container can always meet the needs of the cache container, so that the cache container continues to have material, thereby facilitating uninterrupted production of the mixing equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0046] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:
[0047] FIG1 is a schematic structural diagram of a powder material conveying device provided in an embodiment of the present disclosure;
[0048] FIG2 is a schematic diagram of a portion of the structure of the powder conveying device shown in FIG1 ;
[0049] FIG3 is a schematic diagram of another part of the structure of the powder conveying device shown in FIG1 ;
[0050] FIG4 is a schematic diagram of another part of the structure of the powder conveying device shown in FIG1 ;
[0051] FIG5 is a schematic diagram of an implementation flow of an automatic batching method provided by an embodiment of the present disclosure;
[0052] FIG6 is a schematic diagram of a control flow of an automatic batching method provided in some embodiments of the present disclosure. DETAILED DESCRIPTION
[0053] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.
[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this disclosure; the terms "including" and "having" and any variations thereof in this disclosure are intended to cover non-exclusive inclusions.
[0055] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.
[0056] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0057] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.
[0058] In the description of the embodiments of the present disclosure, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present disclosure.
[0059] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.
[0060] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.
[0061] Hereinafter, the present disclosure will be described in detail.
[0062] Currently, new energy batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.
[0063] A battery includes multiple battery cells, which are connected in series, parallel, or in a hybrid manner. Hybrid means that multiple battery cells are connected both in series and in parallel. A battery cell is the smallest independent unit that can be charged and discharged independently. A battery cell can be a secondary battery, which is a battery cell that can be recharged to activate the active material after discharge and continue to be used. The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., but the embodiments of the present disclosure are not limited to this.
[0064] A battery cell includes an electrode plate, a separator, and an electrolyte. The electrode plate includes a current collector and an active material layer coated on the surface of the current collector. The active material layer is formed by drying an active material slurry. The active material slurry includes powdered active material and solvent, powdered binder, and powdered conductive agent. Powdered active materials include lithium iron phosphate powder, ternary material powder, graphite anode powder, silicon-carbon anode powder, and powdered conductive agents. Powdered conductive agents include acetylene black powder and carbon nanotube powder. The powdered active material, solvent, powdered binder, and powdered conductive agent are uniformly mixed to form the active material slurry. The powdered active material can be transported by a powder conveying device to form the active material slurry.
[0065] In the related art, the powder conveying device includes a feeding device, a metering tank, a sending tank, a buffer tank and a stirring device which are connected in sequence through pipelines. The metering tank is arranged above the sending tank, the buffer tank is arranged on the left or right side of the sending tank, and the stirring device is arranged below the buffer tank. The powder enters the sending tank through the feeding device and the metering tank. The sending tank uses positive pressure conveying to convey the powder to the buffer tank, and the powder then enters the stirring device from the buffer tank for stirring.
[0066] The inventors of the present disclosure noticed that the powder conveying devices used in the related art, on the one hand, have large dimensions in the left-right direction or the front-back direction, each device occupies a large area, and the space utilization rate is low; on the other hand, the number of devices used is large, the equipment cost is high, and the positive pressure conveying method has high production costs and is prone to increase the probability of powder leakage.
[0067] Based on the above considerations, in order to reduce the size of the powder conveying device in the left-right direction or the front-back direction and the equipment footprint, and reduce the number of equipment and usage costs, the first aspect of the embodiment of the present disclosure provides a powder conveying device 1.
[0068] The powder conveying device 1 of the embodiment of the present disclosure can be used to convey powder for preparing battery slurry, and can also be used to convey powder for preparing other slurries. The powder conveying device 1 provided by the present disclosure can be used to convey combustible powder, and can also be used to convey non-combustible powder. Powder refers to powdered material. Specifically, in this embodiment, the powder conveying device 1 is used to convey powder for preparing battery slurry as an example. The powder can be one of powdered battery positive electrode active material, powdered battery negative electrode active material, powdered conductive agent, powdered binder, etc., or a combination of at least two of them.
[0069] Referring to FIG. 1 , the powder conveying device 1 includes a feeding device 10 and a metering container 11 , a buffer container 12 , and a stirring device 13 , which are sequentially arranged from top to bottom along the gravity direction of the powder.
[0070] The feeding device 10 is used to remove the powder bag and convey the powder. The input end of the metering container 11 is connected to the output end of the feeding device 10, and is used to receive the powder and weigh the powder, and convey the powder to the buffer container 12. The buffer container 12 is used to mix the powder and put it into the stirring equipment 13.
[0071] The direction of the powder's gravity is perpendicular to the ground. In this embodiment, the direction of the powder's gravity is the same as the vertical direction. The metering container 11, the buffer container 12, and the stirring device 13 are arranged sequentially from top to bottom along the direction of the powder's gravity. This means that the metering container 11 is positioned above the buffer container 12, and the buffer container 12 is positioned above the stirring device 13. In this way, the powder in the metering container 11 can be transferred from the metering container 11 to the buffer container 12 under its own gravity, and the powder in the buffer container 12 can also be transferred from the buffer container 12 to the stirring device 13 under its own gravity.
[0072] A powder bag is a bulk container for powder to be transported. Unloading a powder bag involves removing the powder from the bulk container. For example, the bulk container may be a ton bag, also known as a bulk bag or woven bag. The ton bag may be made of polypropylene fiber, which offers high strength, abrasion resistance, water and moisture resistance, and ease of loading and unloading. The ton bag may be rectangular in shape, and one or more openings may be provided on the surface of the ton bag to facilitate unloading of the powder.
[0073] It is understandable that in the related art, when unpacking the powder bag, it is necessary to manually operate the suspension mechanism to transport the powder bag to the top of the unloading area, and then manually open the surface of the powder bag to release the powder in the powder bag.
[0074] In this embodiment, the loading device 10 is used to remove the powder bag and convey the powder, which means that the powder bag does not need to be opened manually. In this way, the degree of automation of the unpacking of the powder bag is improved, the unpacking efficiency is increased, the manpower consumption of the unpacking of the powder bag is reduced, and the probability of workers directly coming into contact with the powder during the operation and affecting their health is reduced.
[0075] Exemplarily, the loading device 10 may include a suspension component, an unpacking component, and a powder storage bin. Workers only need to hang the powder bag on the suspension component, and the suspension component will transport the powder bag to a preset position. The unpacking component is used to destroy the powder bag at the preset position to release the powder to the powder storage bin for storage, and the powder storage bin transports the powder to the metering container 11.
[0076] The metering container 11 refers to a container with a certain holding space for accommodating powder and having a metering function. The metering container 11 can measure the powder and then transport it to the buffer container 12 below, so as to achieve quantitative transportation of the powder, so that the powder entering the stirring device 13 each time can be kept consistent, thereby increasing the stability of the content of each component in the battery slurry.
[0077] It is understandable that there is no other container capable of storing powder connected to the top of the metering container 11, so as not to affect the accurate calculation of the powder stored in it by the metering container 11, and to reduce the numerical deviation of the powder delivered by the metering container 11 to the buffer container 12 each time.
[0078] The number of the feeding device 10 and the metering container 11 can be one or more, and the output ends of the multiple feeding devices 10 can be connected to the input ends of the multiple metering containers 11 respectively, so as to realize the transportation of different types of powders.
[0079] The buffer container 12 refers to a container having a certain accommodation space for accommodating powder materials and mixing the powder materials.
[0080] Specifically, there can be multiple metering containers 11 to store the same type or different types of powders. For example, one of them can store battery positive electrode active materials, and the other can store conductive agents. The output ends of the two metering containers 11 are respectively connected to the cache container 12. In this way, the two metering containers 11 respectively inject a certain amount of battery positive electrode active materials and a certain amount of conductive agents into the cache container 12. The cache container 12 mixes the battery positive electrode active materials and the conductive agent so that the battery positive electrode materials and the conductive agent are evenly distributed in the cache container 12. Then, when the stirring device 13 receives them, the battery positive electrode materials and the conductive agent can also be evenly distributed in the stirring device 13, thereby increasing the stirring efficiency of the stirring device 13.
[0081] The stirring device 13 is used to stir the powder and the solvent to obtain the battery slurry. Specifically, the solvent can be injected into the stirring device 13 through a solvent delivery device.
[0082] The powder conveying device 1 provided by the embodiment of the present disclosure has a loading device 10 that removes the powder bag without manual unpacking, which has high unpacking efficiency, reduces labor costs and reduces the probability of workers coming into direct contact with the powder; and, the metering container 11, the buffer container 12 and the stirring device 13 are arranged in sequence from top to bottom, which is convenient for the powder to be transported under its own gravity, without the need for additional auxiliary conveying methods, and the conveying cost is low. The powder in the metering container 11 is conveyed to the buffer container 12 without the need for additional transfer equipment. In addition, it can also reduce the size of the powder conveying device 1 in the left and right direction or the front and back direction, reduce the floor space, and increase the compactness of the layout of the powder conveying device 1.
[0083] The method of conveying the powder material to the measuring container 11 by the feeding device 10 is not limited.
[0084] In some embodiments, please refer to Figure 1, the powder conveying device 1 includes a fan 14, and a first conveying pipe 15 is provided between the feeding device 10 and the metering container 11. The fan 14 is used to generate negative pressure in the first conveying pipe 15 so that the powder of the feeding device 10 enters the metering container 11 through the first conveying pipe 15 under the action of negative pressure.
[0085] Specifically, the fan 14 can suck the air in the first conveying pipe 15, forming a negative pressure in the first conveying pipe 15. The powder of the feeding device 10 enters the first conveying pipe 15 under the action of the negative pressure and flows along the first conveying pipe 15 to the metering container 11, thereby realizing the transportation of the powder between the feeding device 10 and the metering container 11.
[0086] In this embodiment, the powder of the feeding device 10 is conveyed to the metering container 11 through the first conveying pipe 15 by means of negative pressure conveying. The powder can flow in a dispersed state under the action of negative pressure, reducing the probability of the powder agglomerating during the conveying process. Moreover, during the flow of the powder along the first conveying pipe 15, the powder can collide and rub against the pipe wall of the first conveying pipe 15, and the powders can also collide and rub against each other, so that the powder can be further broken up, reducing the agglomerated powder input into the metering container 11, and facilitating the metering container 11 to accurately control the weight of the received powder; in addition, negative pressure conveying can also reduce the probability of powder adhering to the first conveying pipe 15, reduce powder waste, and increase powder conveying efficiency.
[0087] It is understandable that the type of the blower 14 is not limited. For example, the blower 14 may be a Roots blower.
[0088] In some embodiments, please refer to Figure 1, there is a second conveying pipe 16 between the metering container 11 and the cache container 12, and the metering container 11 is provided with a feeding screw, which is used to transport the powder in the metering container 11 to the cache container 12 through the second conveying pipe 16.
[0089] Specifically, the feeding screw can rotate and stir the powder in the metering container 11, so that the powder continues to fall and enter the second conveying pipe 16, and then enter the buffer container 12 through the second conveying pipe 16, thereby realizing the transportation of the powder between the metering container 11 and the buffer container 12.
[0090] Exemplarily, the feeding screw includes a rotating shaft and blades, the blades extending spirally along the axial direction of the rotating shaft, and when the rotating shaft rotates, the blades rotate synchronously to stir the powder, causing the powder to move along the extension direction of the blades, and then leave the metering container 11 and enter the second conveying pipe 16.
[0091] It is understandable that during the storage process of the metering container 11 , the powder is deposited in the metering container under the action of gravity, and is prone to agglomeration.
[0092] In the embodiment of the present disclosure, the powder in the metering container 11 is stirred by the feeding screw, and the feeding screw breaks up the lumps to make the powder dispersed. The powder flows along a preset trajectory under the push of the feeding screw and enters the second conveying pipe 16. The powder entering the second conveying pipe 16 can enter the buffer container 12 under the action of its own gravity. In this way, the powder can be transported from the metering container 11 to the buffer container 12, thereby reducing the transportation cost.
[0093] It is understood that quantitative delivery of powder from the metering container 11 to the buffer container 12 can be achieved by controlling the feeding speed of the feeding screw. At the beginning of delivery, the feeding screw rotates at a relatively fast speed to deliver most of the powder to the second delivery pipe 16. When the weight of the remaining powder in the metering container 11 approaches a set value, the feeding screw slows down to deliver a small amount of powder. When the weight of the remaining powder in the metering container 11 reaches the set value, the feeding screw stops rotating, completing the quantitative delivery of the powder.
[0094] In some embodiments, the powder conveying device 1 includes a gas conveying component, which is connected to the second conveying pipe 16 and is used to input compressed gas into the second conveying pipe 16 to convey the residual powder in the feeding screw and the second conveying pipe 16 to the buffer container 12.
[0095] It is understandable that, in the process of powder material flowing from the feeding screw to the second conveying pipe, a small amount of powder material will inevitably adhere to the pipe wall of the second conveying pipe, thereby increasing the conveying error of the powder material.
[0096] In this embodiment, a gas delivery assembly is provided to supply compressed gas to the second delivery pipe 16, so that residual powder adhering to the feeding screw and the wall of the second delivery pipe 16 enters the buffer container 12 under the action of the compressed gas, thereby reducing the deviation between the powder delivered from the metering container 11 to the buffer container 12 and the target weight, thereby increasing the operating reliability of the powder delivery device 1. The target weight refers to the ideal weight of powder required by the buffer container 12 in a single batch.
[0097] It is understood that the gas delivered by the gas delivery assembly may be air, nitrogen, or other gases, or a combination of multiple gases. Specifically, the gas to be used may be determined based on the type of powder being delivered. For example, when cleaning powder that is not suitable for contact with oxygen, nitrogen or other specific gases that do not chemically react with the powder may be used. When cleaning powder that is suitable for contact with oxygen, compressed air may be directly delivered.
[0098] In some embodiments, referring to FIG1 , the powder conveying device 1 includes a support platform 17, and the support platform 17 includes a first platform 171, a second platform 172, and a third platform 173 arranged from top to bottom. The first platform 171, the second platform 172, and the third platform 173 respectively support the metering container 11, the buffer container 12, and the stirring device 13. The loading device 10 is located on one side of the support platform 17 along the first direction, wherein the first direction is perpendicular to the gravity direction of the powder.
[0099] Specifically, the support platform 17 is used to provide support for the metering container 11 , the buffer container 12 and the stirring device 13 , so that the metering container 11 , the buffer container 12 and the stirring device 13 can work stably, thereby increasing the working reliability of the powder conveying device 1 .
[0100] The feeding device 10 is arranged on the side of the support platform 17 that is different from the direction of gravity of the powder, which can make the layout of the powder conveying device 1 more reasonable, and the overall height of the powder conveying device 1 will not be too high, which can reduce the height requirement for the layout site. At the same time, it also reduces the probability that the feeding device 10 is arranged above the measuring container 11 and affects the accurate weighing of the powder by the measuring container 11.
[0101] The first direction may be a left-right direction or a front-back direction, and is not limited here.
[0102] In some embodiments, the powder conveying device 1 includes a first pressure sensor, which is disposed in the metering container 11 and is used to detect the pressure in the metering container 11 .
[0103] Specifically, the first pressure sensor can reflect the weight of the powder contained in the metering container 11 in real time. When the powder is transported to the buffer container 12, the numerical value changes reflected by the first pressure sensor can realize real-time monitoring of the weight of the transported powder, thereby realizing accurate transportation of the powder from the metering container 11 to the buffer container 12.
[0104] In some examples, the powder conveying device 1 includes a second pressure sensor, which is disposed in the buffer container 12 and is used to detect the pressure in the buffer container 12 .
[0105] Specifically, the second pressure sensor can reflect the weight of the powder contained in the buffer container 12 in real time. When receiving the powder from the measuring container 11, the numerical value change reflected by the second pressure sensor is used to realize real-time monitoring of the weight of the received powder, so as to compare the difference between the received powder and the target weight. If the difference is within a reasonable range, it is determined that the unloading is completed.
[0106] In some embodiments, the powder conveying device 1 includes a mixing mechanism and a weighing device, which are arranged in the buffer container 12. The mixing mechanism is used to mix the powder in the buffer container 12, and the weighing device is used to measure the weight of the powder stored in the buffer container 12.
[0107] Specifically, the mixing mechanism is a mechanism capable of mixing the powders within the buffer container 12 to achieve uniform distribution of the powders. The mixing mechanism may include a stirring mechanism at least partially disposed within the buffer container 12. The stirring mechanism can stir the various powders within the buffer container 12 by rotating. The stirring mechanism may include a stirring paddle, a stirring rod, or the like. Of course, in other examples, the mixing mechanism may also include a rotating mechanism disposed outside the buffer container 12. The rotating mechanism drives the buffer container 12 to rotate, thereby uniformly mixing the powders within the buffer container 12.
[0108] Of course, the mixing mechanism may also include a vibrator and an air butterfly to generate vibration so that the powder in the buffer container 12 is fully mixed.
[0109] The weighing device can measure the weight of the powder stored in the buffer container 12 so as to monitor the weight of the powder received by the buffer container 12 in real time, thereby comparing the difference between the received powder and the target weight. If the difference is within a reasonable range, it is determined that the unloading is completed.
[0110] In this embodiment, a mixing mechanism and a weighing device are provided. The mixing mechanism enables the various powders in the buffer container 12 to be evenly distributed and in a dispersed state, thereby reducing the probability of agglomeration and increasing the reliability of the preparation of the battery slurry. The weighing device can determine the weight of the powder stored in the buffer container 12 to keep the received powder and the target weight within a reasonable range, thereby increasing the accuracy of the weight of the powder received by the buffer container 12.
[0111] In some embodiments, referring to FIG. 2 and FIG. 4 , the powder conveying device 1 includes a first switch valve 18 , which is disposed between the feeding device 10 and the metering container 11 and is used to control the connection or disconnection between the feeding device 10 and the metering container 11 ;
[0112] And / or, the powder conveying device 1 includes a second switch valve 19, which is provided between the metering container 11 and the buffer container 12, and is used to control the connection or disconnection between the metering container 11 and the buffer container 12;
[0113] And / or, the powder conveying device 1 includes a third switch valve 20, which is arranged between the buffer container 12 and the stirring device 13, and is used to control the connection or disconnection between the buffer container 12 and the stirring device 13.
[0114] Specifically, when the material needs to be discharged from the loading device 10 to the metering container 11, the first on-off valve 18 is opened to form a flow path between the loading device 10 and the metering container 11, and the powder is transported from the loading device 10 to the metering container 11. When the material is discharged, the first on-off valve 18 is closed to disconnect the loading device 10 from the metering container 11, thereby increasing the control accuracy of the powder delivery. The first on-off valve 18 can be an electric valve, a butterfly valve, etc., which is not limited here.
[0115] When powder needs to be transferred from metering container 11 to buffer container 12, second switch valve 19 is opened to form a flow path between metering container 11 and buffer container 12, and powder is transferred from metering container 11 to buffer container 12. When the powder is discharged, second switch valve 19 is closed to disconnect the metering container 11 and buffer container 12, thereby improving the control accuracy of powder transfer. Second switch valve 19 can be an electric valve, a butterfly valve, etc., which is not limited here.
[0116] When powder needs to be delivered to the mixing device 13 via the buffer container 12, the third on-off valve 20 is opened to form a flow path between the buffer container 12 and the mixing device 13, and the powder is delivered from the buffer container 12 to the mixing device 13. When the powder is delivered, the third on-off valve 20 is closed to disconnect the buffer container 12 from the mixing device 13, thereby improving the control accuracy of the powder delivery. The third on-off valve 20 can be an electric valve, a butterfly valve, etc., without limitation.
[0117] In some embodiments, referring to FIG. 2 , the powder conveying device 1 includes an air hammer 21 and an air butterfly 22 . The air hammer 21 and the air butterfly 22 are disposed on the metering container 11 to vibrate the wall of the metering container 11 .
[0118] Here, the arrangement of the air hammer 21 and the air butterfly 22 can vibrate the wall of the metering container 11 , thereby causing the powder adsorbed on the wall of the metering container 11 to separate from the wall, reducing the probability of powder agglomeration and facilitating the conveyance of powder to the lower buffer container 12 .
[0119] In some embodiments, referring to FIG. 3 , the powder conveying device 1 includes at least one first pressure gauge 23 . The first pressure gauge 23 is disposed between the metering container 11 and the fan 14 and is used to detect the negative pressure generated by the fan 14 .
[0120] Here, the first pressure gauge 23 detects the negative pressure generated by the fan 14 to reflect the negative pressure condition in real time, thereby increasing the control over the negative pressure and facilitating the generation of an appropriate negative pressure to increase the reliability of powder transportation.
[0121] In some embodiments, referring to FIG. 2 and FIG. 3 , the powder conveying device 1 includes a third conveying pipe 24 , which is used to connect the metering container 11 and the fan 14 , and the fan 14 is used to generate negative pressure in the first conveying pipe 15 through the third conveying pipe 24 .
[0122] The powder conveying device 1 includes a first filter unit 25, which is arranged between the metering container 11 and the third conveying pipe 24, and is used to filter the powder flowing from the metering container 11 to the third conveying pipe 24. The powder conveying device 1 includes a first gas conveying part 26, which is connected to the first filter unit 25 and is used to pass gas into the first filter unit 25 to blow the powder adsorbed by the first filter unit 25 back to the metering container 11.
[0123] And / or, the powder conveying device 1 includes a second filter unit 27, which is arranged between the fan 14 and the third conveying pipe 24, and is used to filter the powder entering the third conveying pipe 24 from the metering container 11. The powder conveying device 1 includes a second gas conveying part 28 and a storage chamber 29. The second gas conveying part 28 and the storage chamber 29 are respectively connected to the second filter unit 27, and are used to pass gas into the second filter unit 27 to blow the powder adsorbed by the second filter unit 27 into the storage chamber 29 for storage.
[0124] It can be understood that under the action of negative pressure, the powder entering the metering container 11 from the feeding device 10 through the first conveying pipe 15 may enter the third conveying pipe 24 from the metering container 11 under the action of the fan 14, and then flow to the fan 14, affecting the operation of the fan 14 and causing waste of powder.
[0125] In this embodiment, the first filter unit 25 filters and adsorbs the powder flowing from the metering container 11 to the third conveying pipe 24, and the first gas conveying part 26 passes gas to blow the adsorbed powder back into the metering container 11, thereby reducing the probability of the powder entering the third conveying pipe 24 and affecting the operation of the fan 14, and the adsorbed powder returns to the metering container 11 under the action of the gas, thereby reducing the waste of powder.
[0126] If a small amount of powder still enters the third conveying pipe 24 and flows toward the fan 14 under the action of negative pressure, the second filter unit 27 is provided to filter and adsorb the powder again before the powder flows toward the fan 14, and the second gas conveying part 28 is passed through to blow the adsorbed powder into the storage chamber 29 for storage, thereby reducing the probability of powder entering the fan 14 and affecting the operation of the fan 14, thereby increasing the working reliability of the fan 14.
[0127] In some embodiments, the powder conveying device 1 includes a second pressure gauge 30 and a weighing scale 31 , which are disposed in the measuring container 11 to reflect the current pressure state in the measuring container 11 and the current weight of the powder.
[0128] In some embodiments, please refer to Figure 2, the gas delivery assembly includes a gas input structure 32, a third pressure gauge 33 and a first actuator valve 34. The first actuator valve 34 can control the gas input structure 32 to input compressed gas into the second delivery pipe 16. The third pressure gauge 33 is used to detect the pressure of the compressed gas so that the compressed gas is input into the second delivery pipe 16 at an appropriate pressure, and the residual powder in the second delivery pipe 16 is blown toward the buffer container 12.
[0129] The structures of the first gas delivery part 26 and the second gas delivery part 28 may refer to the gas delivery assembly, and are not described in detail here.
[0130] It can be understood that, referring to FIG. 2 , the powder conveying device 1 includes a second actuator valve 35 , and the second actuator valve 35 is used to control the air hammer 21 to generate vibration.
[0131] The powder conveying device 1 includes a third actuator valve 36 , which is used to control the air butterfly 22 to vibrate.
[0132] It can be understood that, referring to Figure 2, the powder conveying device 1 also includes a fourth switch valve 37, which is arranged between the metering container 11 and the fan 14 to control the connection or disconnection between the metering container 11 and the fan 14 to achieve the opening or disconnection of the negative pressure.
[0133] Of course, please refer to Figure 4. The powder conveying device 1 can also include a third filter unit 38. The third filter unit 38 is arranged in the buffer container 12, and is used to filter the powder entering the buffer container 12 from the metering container 11. The powder conveying device 1 includes a third gas conveying part 39. The third gas conveying part 39 is connected to the third filter unit 38, and is used to pass gas into the third filter unit 38 to blow the powder adsorbed in the third filter unit 38 back to the buffer container 12.
[0134] A second aspect of the present disclosure provides an automatic batching method, which is applied to the powder conveying device 1 of any embodiment of the present disclosure. Please refer to FIG5 . The automatic batching method includes:
[0135] Step 101: Determine whether the stirring device 13 meets the blanking conditions.
[0136] Step 102 : Control the buffer container 12 to drop material into the stirring device 13 .
[0137] The material dropping condition includes: the stirring device 13 is in an unloaded state.
[0138] Here, the no-load state means that the weight of the powder in the stirring device 13 is zero or close to zero. In this case, the stirring device 13 is in a state of lack of material and needs to be fed with powder from the buffer container 12 to prepare battery slurry. In this way, after determining that the stirring device 13 meets the material discharge conditions, the buffer container 12 is controlled to discharge the material to the stirring device 13, thereby increasing the reliability of the stirring device 13 in preparing battery slurry.
[0139] After determining that the mixing device 13 is out of material, the mixing device 13 sends a material request, and the buffer container 12 unloads material to the mixing device 13. The powder in the buffer container 12 can be transported to the mixing device 13 under the action of gravity.
[0140] In this embodiment, if the stirring device 13 is short of material, the buffer container 12 can quickly replenish powder to the stirring device 13 so that the stirring device 13 can continuously produce battery slurry, thereby increasing production efficiency.
[0141] In some embodiments, after controlling the buffer container 12 to drop materials into the stirring device 13, the automatic batching method includes:
[0142] It is determined whether the cache container 12 is in a clear state.
[0143] If so, the metering container 11 is controlled to feed the material to the buffer container 12 .
[0144] Here, the clearing state means that the buffer container 12 is in a material shortage state and needs to be replenished with powder.
[0145] Here, when the cache container 12 is in the cleared state, the metering container 11 can transport powder to the cache container 12 under the action of the feeding screw, so that after the cache container 12 completes the feeding to the stirring device 13, it can quickly replenish the powder to prepare for the next pulping of the stirring device 13. In this way, regardless of whether the stirring device 13 is in working condition, powder can be stored in the cache container 12 to meet the production capacity requirements of uninterrupted pulping of the stirring device 13.
[0146] In some embodiments, determining whether the cache container 12 is in a cleared state includes:
[0147] It is determined whether the cache container 12 is in an empty state.
[0148] If so, the first duration that the cache container 12 is in the empty state is recorded. If the first duration is not less than the first preset duration, it is determined that the cache container 12 is in the cleared state.
[0149] Here, the no-load state means that the weight of the powder in the buffer container 12 is zero or close to zero, and the first preset time length refers to the preset no-load time length that the buffer container 12 must meet in the cleared state.
[0150] Here, if the cache container 12 is in an empty state, that is, the weight of the powder in the cache container 12 is zero, then the first time duration when the weight of the powder in the cache container 12 is zero is recorded. If the first time duration is not less than the first preset time duration, it can be determined that the cache container 12 is in a cleared state, and all the powder stored in the cache container 12 has been transported to the mixing equipment 13, and the metering container 11 is required to transport the powder to replenish the powder.
[0151] Here, recording the empty time of the cache container 12 can reduce the probability of misjudging the load weight in the cache container 12, so as to ensure that the cache container 12 is completely out of material.
[0152] In this embodiment, after the buffer container 12 is filled with material, the status of the buffer container 12 is confirmed to determine that the buffer container 12 is in a completely material-deficient state, and then the metering container 11 is controlled to feed material to the buffer container 12, so that the weight of the powder stored in the buffer container 12 can be kept relatively consistent each time, thereby increasing the qualification of the slurry produced by the stirring equipment 13.
[0153] Some examples of automated batching methods include:
[0154] If the cache container 12 is in a loaded state, it is determined that the cache container 12 is in an unflushed state.
[0155] The control cache container 12 outputs the alarm information.
[0156] Here, the load state means that the weight of the powder in the buffer container 12 is greater than zero.
[0157] After the buffer container 12 discharges the material into the stirring device 13, if the buffer container 12 has been in a loaded state instead of an unloaded state, there may be a problem in the discharge of the material from the buffer container 12 to the stirring device 13, and it is necessary to confirm whether the buffer container 12 has a fault. At this time, the buffer container 12 is controlled to output an alarm message to confirm the status of the buffer container 12 to avoid affecting the pulping qualification.
[0158] In some embodiments, after controlling the metering container 11 to feed the material into the buffer container 12, the automatic batching method includes:
[0159] It is determined whether the load of the metering container 11 is greater than a preset value.
[0160] If not, the feeding device 10 is controlled to feed the material to the metering container 11 , wherein the preset value is not less than the weight of the powder material required by the buffer container 12 in a single time.
[0161] Here, when the load of the metering container 11 is greater than the preset value, that is, the weight of the powder stored in the metering container 11 can meet the weight of the powder required by the cache container 12, it can be judged that the metering container 11 is not short of material, and material can be supplied to the cache container 12 when the cache container 12 is short of material.
[0162] When the load of the metering container 11 is less than the preset value, the weight of the powder stored in the metering container 11 cannot meet the weight of the powder required by the cache container 12, then the metering container 11 is judged to be out of material, and the loading device 10 is controlled to convey powder to the metering container 11, so that the powder stored in the metering container 11 can meet the single unloading requirements of the cache container 12, so that when the cache container 12 needs powder, the powder stored in the metering container 11 can always meet the needs of the cache container 12, so that the cache container 12 is continuously supplied with material, thereby facilitating uninterrupted production of the mixing equipment 13.
[0163] Below, referring to FIG6 , the automatic batching method of the embodiment of the present disclosure is illustrated in combination with an application example.
[0164] The specific steps of the automatic batching method of this application embodiment are as follows:
[0165] Step 201: The stirring device 13 sends a material request.
[0166] Here, the material request is that the stirring device 13 needs to be fed with materials to prepare the battery slurry.
[0167] Step 202: Determine whether the stirring device 13 is in an idle state.
[0168] Here, the no-load state means that the weight of the powder in the stirring device 13 is zero, that is, the stirring device 13 needs to be in the no-load state to determine that the stirring device 13 meets the material dropping condition.
[0169] Step 203: Control the buffer container 12 to feed materials to the stirring device 13.
[0170] Here, after determining that the stirring device 13 meets the material dropping conditions, the buffer container 12 is controlled to drop the material into the stirring device 13, thereby increasing the reliability of the stirring device 13 in preparing the battery slurry.
[0171] Step 204: Determine whether the cache container 12 is in an empty state.
[0172] Here, the no-load state means that the weight of the powder in the buffer container 12 is zero, that is, after the buffer container 12 feeds the powder to the stirring device 13 , it is determined whether all the powder in the buffer container 12 is fed to the stirring device 13 .
[0173] Step 205: If yes, record the first duration that the cache container 12 is in the idle state.
[0174] Here, if the cache container 12 is in an empty state, that is, the weight of the powder in the cache container 12 is zero, then the empty time of the cache container 12 is recorded to reduce the probability of misjudging the state of the cache container 12 and ensure that the cache container 12 is completely in a state of lack of material.
[0175] Step 206: If not, control the cache container 12 to output an alarm message.
[0176] Here, after the buffer container 12 drops the material into the stirring device 13, if the buffer container 12 is always in a loaded state, there may be a problem with the material dropping from the buffer container 12 to the stirring device 13, and it is necessary to confirm whether the buffer container 12 has a fault. At this time, the buffer container 12 is controlled to output an alarm message to confirm the status of the buffer container 12.
[0177] Step 207: The first duration is not less than the first preset duration, and it is determined that the cache container 12 is in a cleared state, and the cache container 12 sends a material request.
[0178] Here, when the first time period reaches the first preset time period, it is determined that the cache container 12 is in a cleared state, that is, the cache container 12 needs to be replenished with powder.
[0179] Here, if the first time duration is less than the first preset time duration, it is necessary to re-determine whether the cache container 12 is in an empty state.
[0180] Step 208 : Control the metering container 11 to feed materials to the buffer container 12 .
[0181] Here, after determining that the cache container 12 is in the cleared state, the metering container 11 is controlled to feed the cache container 12, so that the cache container 12 can quickly replenish the powder after the material is dropped into the stirring device 13, in preparation for the next pulping of the stirring device 13. In this way, regardless of whether the stirring device 13 is in working condition, powder can be stored in the cache container 12 to meet the production capacity requirements of the stirring device 13 for uninterrupted pulping.
[0182] Step 209: Determine whether the load of the metering container 11 is greater than a preset value, wherein the preset value is not less than the weight of the powder required by the buffer container 12 at one time.
[0183] Here, after the metering container 11 feeds the material into the buffer container 12 , it is determined whether the weight of the powder in the metering container 11 can meet the needs of the buffer container 12 next time.
[0184] Step 210: If yes, determine that the metering container 11 is not short of material.
[0185] Here, if the load of the metering container 11 is greater than the preset value, the weight of the powder in the metering container 11 can meet the needs of the next buffer container 12, thereby determining that the metering container 11 is not short of powder and does not need to be replenished.
[0186] Step 211 : If not, control the loading device 10 to feed the material to the metering container 11 .
[0187] Here, if the load of the metering container 11 is less than the preset value, the weight of the powder in the metering container 11 cannot meet the requirements of the next cache container 12, thereby determining that the metering container 11 is out of material, and controlling the feeding device 10 to feed the metering container 11 so that the powder in the metering container 11 can always meet the requirements of the cache container 12, so that the cache container 12 continues to have material, meeting the uninterrupted pulping needs of the stirring equipment 13.
[0188] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present disclosure, and they should all be included in the scope of the present disclosure. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the present disclosure.
Claims
1. A powder conveying device comprising: Feeding device, used to remove powder bags and convey powder; A metering container, a buffer container and a stirring device are arranged in sequence from top to bottom along the gravity direction of the powder. The input end of the metering container is connected to the output end of the feeding device, and is used to receive the powder and weigh the powder, and transport the powder to the buffer container. The buffer container is used to mix the powder and feed it to the stirring device.
2. The powder conveying device according to claim 1, wherein: The powder conveying device includes a fan, and a first conveying pipe is provided between the feeding device and the metering container. The fan is used to generate negative pressure in the first conveying pipe so that the powder of the feeding device enters the metering container through the first conveying pipe under the action of the negative pressure.
3. The powder conveying device according to claim 1 or 2, wherein: There are multiple measuring containers, and no other container capable of storing powder is connected above the measuring containers.
4. The powder conveying device according to claim 1 or 2, wherein: The feeding device includes a suspension component, an unpacking component and a powder storage bin. The suspension component is used to transport the powder bag to a preset position, and the unpacking component is used to destroy the powder bag at the preset position to release the powder to the powder storage bin for storage.
5. The powder material conveying device according to any one of claims 1 to 4, wherein: A second conveying pipe is provided between the metering container and the cache container. The metering container is provided with a feeding screw. The feeding screw is used to transport the powder in the metering container to the cache container through the second conveying pipe.
6. The powder material conveying device according to claim 5, wherein: The feeding screw includes a rotating shaft and blades, the blades extend in a spiral along the axial direction of the rotating shaft, and the rotating shaft can drive the blades to rotate synchronously, so that the powder moves along the extension direction of the blades.
7. The powder material conveying device according to claim 5, wherein: The powder conveying device includes a gas conveying component, which is connected to the second conveying pipeline and is used to input compressed gas into the second conveying pipeline to convey the discharge screw and the residual powder in the second conveying pipeline to the buffer container.
8. The powder conveying device according to any one of claims 1 to 7, wherein: The powder conveying device includes a supporting platform, which includes a first platform, a second platform and a third platform arranged in sequence from top to bottom. The first platform, the second platform and the third platform respectively support the metering container, the buffer container and the stirring equipment. The loading device is located on one side of the supporting platform along the first direction, wherein the first direction is perpendicular to the gravity direction of the powder.
9. The powder material conveying device according to any one of claims 1 to 8, wherein: The powder material conveying device includes a first pressure sensor, which is arranged in the measuring container and is used to detect the pressure in the measuring container.
10. The powder material conveying device according to any one of claims 1 to 8, wherein: The powder material conveying device includes a second pressure sensor, which is arranged in the buffer container and is used to detect the pressure in the buffer container.
11. The powder conveying device according to any one of claims 1 to 8, wherein: The powder conveying device includes a mixing mechanism and a weighing device, which are arranged in the cache container. The mixing mechanism is used to mix the powder in the cache container, and the weighing device is used to measure the weight of the powder stored in the cache container.
12. The powder material conveying device according to any one of claims 1 to 8, wherein: The powder material conveying device includes a first switch valve, which is arranged between the feeding device and the metering container and is used to control the connection or disconnection between the feeding device and the metering container; And / or, the powder conveying device includes a second switch valve, which is provided between the metering container and the buffer container and is used to control the connection or disconnection between the metering container and the buffer container; And / or, the powder conveying device includes a third switch valve, which is arranged between the buffer container and the stirring device and is used to control the connection or disconnection between the buffer container and the stirring device.
13. The powder material conveying device according to any one of claims 1 to 8, wherein: The powder conveying device includes an air hammer and an air butterfly, and the air hammer and the air butterfly are arranged on the measuring container and are used to vibrate the wall surface of the measuring container.
14. The powder conveying device according to claim 2, wherein: The powder conveying device includes at least one first pressure gauge, which is arranged between the metering container and the fan and is used to detect the negative pressure generated by the fan.
15. The powder material conveying device according to claim 2, wherein: The powder conveying device includes a third conveying pipe, the third conveying pipe is used to connect the metering container and the fan, and the fan is used to generate negative pressure in the first conveying pipe through the third conveying pipe; The powder conveying device includes a first filter unit, which is arranged between the metering container and the third conveying pipe and is used to filter the powder flowing from the metering container to the third conveying pipe. The powder conveying device includes a first gas conveying part, which is connected to the first filter unit and is used to pass gas into the first filter unit to blow the powder adsorbed by the first filter unit back to the metering container; And / or, the powder conveying device includes a second filter unit, which is arranged between the fan and the third conveying pipe, and is used to filter the powder entering the third conveying pipe from the metering container. The powder conveying device includes a second gas conveying part and a storage chamber, and the second gas conveying part and the storage chamber are respectively connected to the second filter unit, and are used to introduce gas into the second filter unit to blow the powder adsorbed by the second filter unit into the storage chamber for storage.
16. An automatic batching method, applied to the powder conveying device according to any one of claims 1 to 15, the automatic batching method comprising: Determine that the stirring device meets the material dropping conditions, control the buffer container to the stirring device blanking; Wherein, the blanking condition includes: the stirring equipment is in an unloaded state.
17. The automatic batching method according to claim 16, wherein: After controlling the buffer container to drop materials into the stirring device, the automatic batching method includes: Determining whether the cache container is in a cleared state; If so, the metering container is controlled to feed the material to the buffer container.
18. The automatic batching method according to claim 17, wherein: Determining whether the cache container is in a cleared state includes: Determining whether the cache container is in an empty state; If so, a first duration that the cache container is in an empty state is recorded. If the first duration is not less than a first preset duration, it is determined that the cache container is in a cleared state.
19. The automatic batching method according to claim 18, wherein: The automatic batching method comprises: If the cache container is in a loaded state, determining that the cache container is in an uncleared state; Control the cache container to output alarm information.
20. The automatic batching method according to claim 17, wherein: After controlling the metering container to feed the material to the buffer container, the automatic batching method includes: determining whether the load of the metering container is greater than a preset value; If not, the feeding device is controlled to feed the material to the metering container, wherein the preset value is not less than the weight of the powder material required by the buffer container for a single time.