Automatic seasoning conveying device and method for food production

Abstract

The invention provides an automatic seasoning conveying device and method for food production, and belongs to the technical field of food production equipment. The conveying assembly comprises a conveying belt mechanism installed on the conveying rack and a plurality of electric adsorption structures arranged on a conveying belt of the conveying belt mechanism in the conveying direction of material powder, and a weighing assembly used for weighing single-time discharging is arranged at the discharging end of the feeding hopper. The weighing assembly comprises a Wheatstone module used for obtaining material weight data. The negative electron endowing assembly comprises a spray point for primary endowing and a friction endowing disc for secondary endowing, primary endowing of the spray point and secondary endowing of the friction endowing disc are conducted, the annular negative electrode or the annular positive electrode is switched and connected through data of the charge sensor, energy supplementation or energy reduction of endowing is achieved, nonuniform endowing is avoided, and the efficiency of endowing is improved. And the electric adsorption structure realizes adsorption and unloading by using positive and negative electrostatic fields, so that material residues and pollution caused by friction of the scraper are avoided.

Description

An automatic condiment conveying device and method for food production Technical Field

[0001] This invention belongs to the field of food production equipment technology, and more specifically, relates to an automatic conveying device and method for seasonings used in food production. Background Technology

[0002] In the food production and processing industry, the conveying of seasonings is characterized by easy airflow, easy sticking, and large differences in flowability. At present, the mainstream conveying methods in the industry include traditional belt conveying, screw conveying and electrostatic adsorption conveying. Among them, electrostatic adsorption conveying is gradually being applied to powder seasoning conveying scenarios due to its advantages of no mechanical contact and prevention of airflow.

[0003] For example, Chinese invention patent No. 202111113499.3 provides an electrostatic induction adsorption conveyor and an electrostatic induction adsorption conveying device. In use, multiple conductive parts are arranged along the conveying direction of the conveyed object in a manner that is not electrically connected to each other, thereby allowing control of the voltage applied to each conductive part. By switching the voltage applied to the conductive parts in areas where the conveyed object is present, and switching the voltage applied to the conductive parts in areas where the conveyed object is not present (e.g., zero voltage), and by switching the polarity of the applied voltage, the positional shift and falling of the conveyed object can be suppressed, as well as the reduction of the adsorption force utilizing electrostatic force can be prevented. However, existing conveying devices mostly use a single corona discharge, which can result in insufficient or excessive charge on the material, leading to weak adsorption and detachment. Furthermore, material powder is scraped off by a scraper during unloading, causing residue to easily remain on the conveyor belt. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an automatic conveying device and method for seasonings used in food production. This addresses the issues in the prior art where existing conveying devices often employ a single corona discharge, resulting in insufficient or excessive charge on the material, leading to poor adsorption and detachment. Furthermore, the material powder is scraped off by a scraper during unloading, causing residue to easily remain on the conveyor belt.

[0005] The purpose and effectiveness of the automatic seasoning conveying device and method for food production of the present invention are achieved by the following specific technical means: An automatic seasoning conveying device for food production includes: a conveyor frame, on which a transport component is disposed, the transport component including a conveyor belt mechanism mounted on the conveyor frame, the conveyor belt mechanism having multiple sets of electro-adsorption structures arranged along the conveying direction of the material powder, the multiple sets of electro-adsorption structures being non-electrically connected; a feeding hopper, mounted above the conveyor belt mechanism, the discharge end of the feeding hopper being provided with a weighing component for weighing a single discharge, the weighing component including a Wheatstone module for acquiring material weight data; and a negative electron imparting component, installed between the feeding hopper and the transport component. The negative electron imparting component is used to guide the weighed material powder to the transport component and to impart powder charge to the powder. The transport component includes a discharge needle for initial powder charge imparting and a triboelectric disk for secondary charge imparting, which are arranged sequentially on the guide path. The triboelectric disk is provided with a ring-shaped negative electrode and a ring-shaped positive electrode, which are not electrically connected. It also includes two sets of charge sensors arranged sequentially on the guide path to obtain the charge density data of the initial charge imparting and the charge density data of the secondary charge imparting. The control module is installed on one side of the conveyor frame. The control module is used to control the on / off state of the ring-shaped negative electrode or the ring-shaped positive electrode according to the charge imparting standard judgment result, and to control the multiple sets of electro-adsorption structures to perform electro-adsorption or electro-repulsion.

[0006] According to a preferred embodiment, the electro-adsorption structure includes a conveyor housing mounted on a conveyor belt. A mounting groove is provided on the top of the conveyor housing, and a first energized electrode and a second energized electrode are disposed within the mounting groove. The first and second energized electrodes are not electrically connected and are arranged in an S-shape. An insulating layer is disposed between the first and second energized electrodes, and the insulating layer is flush with the surfaces of the first and second energized electrodes. On / off valves are provided at both ends of the first and second energized electrodes to communicate with a control module. The first energized electrode is the positive electrode, and the second energized electrode is the negative electrode. When the control module is connected to the first energized electrode, a positive electrostatic field is generated for electro-adsorption of the material powder. When the control module is connected to the second energized electrode, a reverse electrostatic field is generated for electro-repulsion of the material powder.

[0007] According to a preferred embodiment, multiple sets of connecting seats are fixedly installed on the surface of the conveyor belt corresponding to multiple sets of electro-adsorption structures. A connecting slot is opened at the bottom of the conveyor housing, and the top of the connecting seat passes through the connecting slot. Connecting holes are opened on both sides of the connecting slot. The connecting holes and the top of the connecting seat are fixedly connected by screws to make the conveyor housing parallel to the surface of the conveyor belt. An insulating plate is fixedly installed on the top of the conveyor housing with sealant. The insulating plate is located at the opening of the mounting slot.

[0008] According to a preferred embodiment, the negative electron imparting component includes an imparting conduit. Two sets of side plates are fixedly installed on the transport area at the top of the transport component via multiple sets of connecting brackets on the conveyor frame. Each set of side plates has a mounting plate at its bottom, and each set of mounting plates has a rubber plate at its bottom. The bottom of the rubber plate contacts the conveyor belt, and the adjacent side of the two sets of rubber plates contacts the side of the conveyor housing of the electro-adsorption structure. An imparting conduit is installed between the two sets of side plates, and multiple sets of discharge needles are installed at the top of the imparting conduit. The multiple sets of discharge needles are arranged in an alternating manner and pass through the ionization channel inside the imparting conduit.

[0009] According to a preferred embodiment, a mounting base is provided at the bottom of the electrified pipe, and a concentric dual-axis motor is provided at the bottom of the mounting base. Two sets of independent output shafts are mounted on the concentric dual-axis motor. The bottom end of one set of output shafts is connected to a friction base. A friction electrified disk is fixedly provided on the periphery of the friction base. The friction electrified disk has an annular friction electrified area and a powder guiding area distributed sequentially from the inside to the outside. The top of the friction electrified disk is provided with multiple sets of friction electrified protrusions corresponding to the friction electrified area. The multiple sets of friction electrified protrusions are electrically connected to the annular negative electrode and the annular positive electrode. One set of charge sensors is provided on the friction base. When the annular negative electrode is conducting, the annular positive electrode is not conducting, and a negative electrode electric field is formed in the friction electrified area through the multiple sets of friction electrified protrusions. When the annular positive electrode is conducting, the annular negative electrode is not conducting, and a positive electrode electric field is formed in the friction electrified area through the multiple sets of friction electrified protrusions.

[0010] According to a preferred embodiment, multiple sets of guide plates are provided on the top of the triboelectric disk corresponding to the powder guiding area. When the concentric dual-axis motor rotates the triboelectric disk in the forward direction, the multiple sets of guide plates return the material powder in the powder guiding area to the triboelectric disk. When the concentric dual-axis motor rotates the triboelectric disk in the reverse direction, the multiple sets of guide plates guide the material powder in the powder guiding area to the transport component. A receiving groove is provided on the top of the friction base, and a splicing plate is connected to the bottom of another set of output shafts. A feeding slot is provided on the splicing plate corresponding to the receiving groove, and multiple sets of obliquely installed guide plates are provided in the feeding slot. The flow vanes and the top of the assembly plate are equipped with a receiving hood. The discharge end of the electrified pipe guides the initially electrified material powder into the receiving hood through the flow guide hood. Another set of charge sensors is installed inside the receiving hood. When there is material powder in the receiving hood, the material powder can enter the feed trough through the gaps between the multiple sets of flow guide vanes. When there is no material powder in the receiving hood, the concentric dual-axis motor rotates the multiple sets of flow guide vanes, which can blow airflow into the feed trough, causing the material powder to tumble between the feed trough and the friction electrification area. At the same time, the rotating multiple sets of flow guide vanes prevent the material powder from flowing back into the feed trough.

[0011] According to a preferred embodiment, the weighing component includes a receiving conveyor belt structure. A cutting plate is provided at the discharge end of the feed hopper, and a discharge slot is provided on the cutting plate. A discharge pusher, driven by a cylinder, is provided in the discharge slot to convey the material powder in the discharge slot to the receiving conveyor belt structure. A connecting frame is provided at the bottom of the feed hopper and connected to two sets of side plates. A rotating seat, rotatably connected to the receiving conveyor belt structure, is provided on the inner wall of one side of the connecting frame. A placement support is provided on the inner wall of the other side, and a placement slot is provided on the placement slot. A piezoelectric plate is provided in the placement slot. A mass plate is provided on the side of the receiving conveyor belt structure away from the rotating seat and contacts the top of the piezoelectric plate. A Wheatstone module, electrically connected to the piezoelectric plate and the control module, is provided at the bottom of the placement support.

[0012] A powder electrification method for an automatic seasoning conveying device for food production, applied to the aforementioned automatic seasoning conveying device for food production, includes the following steps: S1: Obtain target weight parameter data, start the pushing cylinder to transfer the material powder to the receiving surface of the weighing component, obtain material weight data based on the Wheatstone module, obtain a weight judgment result based on the material weight data and the target weight parameter data, and transfer the material powder into the negative electron imparting component; S2: Based on the material weight data, perform discharge needle voltage adaptation, generate corona discharge in the negative electron imparting channel to ionize the surrounding air and form negative ions, perform initial electrification on the material powder passing through the negative electron imparting channel, and obtain initial electrification charge density data; S3: Based on the initial electrification charge density data and the preset target charge density threshold data, perform rotation speed adaptation on the friction electrification disk, perform secondary electrification on the material powder entering the friction chassis and friction electrification disk, and obtain secondary electrification charge density data in real time; S4: Based on the secondary electrification charge density data, obtain an electrification compliance judgment result, and convey the material powder to the transport component according to the electrification compliance judgment result.

[0013] According to a preferred embodiment, the rotational speed of the triboelectric disk is adapted based on the initial charge density data and the preset target charge density threshold data, including: if the initial charge density data is [0, 60]% of the preset target charge density threshold data, the rotational speed of the triboelectric disk is adjusted to 120%-150% of the preset rotational speed; if the initial charge density data is (60, 100) of the preset target charge density threshold data, the rotational speed of the triboelectric disk is adjusted to 80%-120% of the preset rotational speed; if the initial charge density data is greater than or equal to the preset target charge density threshold data, the annular negative electrode is not energized.

[0014] According to a preferred embodiment, the step of obtaining the charging compliance determination result based on the secondary charging charge density data includes: if the secondary charging charge density data is between 90% and 110% of the preset target charge density threshold data, it is determined that the charging meets the standard; if the secondary charging charge density data is lower than 90% of the preset target charge density threshold data, it is determined that the charging is insufficient; if the secondary charging charge density data is higher than 110% of the preset target charge density threshold data, it is determined that the charging is excessive; and charging replenishment or energy reduction operations are performed based on the charging compliance determination result; wherein, if the charging compliance determination result indicates insufficient charging, the annular negative electrode connected to the friction chassis generates a negative electrode electric field, leading to... More negative charges are deposited onto the powder until the secondary charge density data is 90%-110% of the preset target charge density threshold data. The charge density is deemed to be compliant. If the charge density is deemed to be excessive, the annular positive electrode of the friction chassis generates a positive electrode electric field to strip the excess negative charge from the powder until the secondary charge density data is 90%-110% of the preset target charge density threshold data. The charge density is deemed to be compliant. If the charge density is deemed compliant, the annular negative electrode or annular positive electrode is disconnected, and the friction chassis is rotated in the opposite direction to discharge the powder to the transport component.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the initial charging by the discharge needle and the secondary charging by the triboelectric charging disk, two sets of charge sensors collect the charge density data of the initial charging and secondary charging stages and transmit them to the control module. Based on the charging standard determination result, the control module switches the on / off state of the ring negative electrode or the ring positive electrode on the triboelectric charging disk, and dynamically adjusts the charging intensity to complete the charging energy replenishment or energy reduction operation, so that the material powder obtains a stable charge density that is compatible with the conveying requirements, avoiding insufficient adsorption force and material fall off during the conveying process due to insufficient charging, or excessive adsorption that is too tight and difficult to peel off due to excessive charging, thus solving the problem of uneven charging that is easy to occur in the traditional single charging method.

[0016] 2. When the second energized electrode in the electro-adsorption structure is energized, it generates a reverse electrostatic field. By utilizing the physical principle that like charges repel each other, it smoothly pushes the material powder away from the conveying structure, replacing the traditional unloading method that relies on scrapers. This avoids material residue caused by mechanical friction between the scraper and the conveying surface, while reducing wear between components, extending the overall service life of the device, and preventing the generation of mechanical impurities during unloading, thus avoiding material contamination.

[0017] 3. The weighing component obtains material weight data through the Wheatstone module and piezoelectric plate. The negative electrons directly receive the weighed material powder, and the electrification operation is carried out simultaneously while guiding the material flow. This makes the connection between the weighing and electrification processes more seamless, ensuring the consistency between the actual conveying volume and the preset target value. This avoids uneven product flavoring due to material quantity deviation during production and reduces material waste. At the same time, the electrification process and the flow guiding process are carried out simultaneously, shortening the overall conveying process time and improving the overall conveying efficiency in the production process, thus adapting to the needs of large-scale production.

[0018] 4. In the electro-adsorption structure, the first and second energized electrodes are S-shaped and, together with the flush insulating layer between the electrodes, the electrostatic field generated after energization can more comprehensively cover the insulating plate, forming a comprehensive and stable adsorption force on the material powder. This effectively prevents the material from shifting or piling up due to uneven force during transportation. The insulating plate on the top of the conveyor shell is fixedly installed with sealant, which can effectively isolate the electrodes from the material, avoid the conductivity caused by direct contact between the electrodes and the material, ensure the safety and stability of the adsorption process, and eliminate the formation of sanitary dead corners between the electrodes, reducing hygiene problems such as bacterial growth caused by material residue, thus meeting the hygiene standards of food production.

[0019] 5. A concentric dual-axis motor drives the triboelectric charging disc to rotate in both directions. The forward-rotating disc, via a guide plate, draws material powder from the powder guiding zone back to the triboelectric charging zone, providing secondary charging for insufficiently charged materials to ensure adequate charge density. When the triboelectric charging disc rotates in the reverse direction, the guide plate transports the material powder from the powder guiding zone to the transport assembly. Combined with the on / off control of the annular positive and negative electrodes, targeted adjustments can be made for insufficiently or excessively charged material powder without the need for additional adjustment mechanisms. This adapts to different material characteristics and charging requirements, ensuring that each material receives the charge density required for transport, enhancing the device's adaptability to various types of powdered seasonings and meeting diverse production needs. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the assembled structure of the present invention; Figure 2 is a schematic diagram of the unfolded structure of the present invention; Figure 3 is a schematic diagram of the disassembled structure of the insulating plate and the conveying shell in the present invention; Figure 4 is a schematic diagram of the assembled structure of the negative electron imparting component in the present invention; Figure 5 is a schematic diagram of the disassembled structure of the negative electron imparting component in the present invention; Figure 6 is a schematic diagram of the assembled structure of the splicing disk and the triboelectric disk in the present invention; Figure 7 is a schematic diagram of the disassembled structure of the splicing disk and the triboelectric disk in the present invention; Figure 8 is a schematic diagram of the assembled structure of the weighing component in the present invention; Figure 9 is a schematic diagram of the disassembled structure of the weighing component in the present invention; Figure 10 is an enlarged schematic diagram of region A in Figure 9; Figure 11 is a flowchart of the steps of the powder electrification method of an automatic conveying device for seasonings in food production according to the present invention.

[0021] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 101, conveyor frame; 102, feed hopper; 103, control module; 104, connecting bracket; 105, side plate; 106, mounting plate; 107, rubber plate; 201, conveyor belt mechanism; 202, conveyor housing; 203, mounting groove; 204, first energized electrode; 205, second energized electrode; 206, insulation layer; 207, connecting seat; 208, connecting slot; 209, connecting hole; 210, insulation plate; 211, on / off valve; 301, Wheatstone module; 302, receiving conveyor belt structure; 303, cutting plate; 304, discharge slot; 30 5. Cylinder; 306. Discharge pusher; 307. Connecting frame; 308. Rotating seat; 309. Placement support; 310. Placement slot; 311. Piezoelectric plate; 312. Mass plate; 401. Discharge needle; 402. Triboelectric plate; 403. Annular negative electrode; 404. Annular positive electrode; 405. Charge sensor; 406. Electrostatic pipe; 407. Mounting base; 408. Concentric dual-axis motor; 409. Friction chassis; 410. Triboelectric protrusion; 411. Guide plate; 412. Receiving slot; 413. Assembly plate; 414. Feed inlet; 415. Guide vane; 416. Receiving cover; 417. Guide cover. Detailed Implementation

[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but should not be used to limit the scope of protection of the present invention.

[0023] Example:

[0024] As shown in Figures 1 to 10: This invention provides an automatic seasoning conveying device for food production, comprising: a conveyor frame 101, on which a transport component is mounted for conveying powdered materials. The transport component includes a conveyor belt mechanism 201 mounted on the conveyor frame 101. The conveyor belt of the conveyor belt mechanism 201 can circulate in a preset direction. Multiple sets of electro-adsorption structures are arranged at intervals along the conveying direction of the powdered materials on the surface of the conveyor belt. The multiple sets of electro-adsorption structures are kept independent and not electrically connected. Each set of electro-adsorption structures corresponds to receiving a batch of powdered materials after electro-treatment. It can independently achieve adsorption or repulsion according to the conveying progress, avoiding mutual adsorption between different batches of materials. Interference; hopper 102, used to store the powdered material to be conveyed, is installed above the conveyor belt mechanism 201 with its discharge end facing the negative electron imparting component. The discharge end of hopper 102 is equipped with a weighing component for weighing each discharge. The weighing component receives instructions from the control module 103 to quantitatively discharge the material. The included Wheatstone module 301 contains a Wheatstone bridge, which is electrically connected to the piezoelectric plate 311 in the weighing component. When the powdered material falls onto the receiving surface of the weighing component, the piezoelectric element experiences a change in resistance due to the force. The Wheatstone bridge detects this resistance change, converts it into a corresponding electrical signal, and transmits it to the control module 103. This allows for the acquisition of material weight data. A negative electron imparting component, installed between the feed hopper 102 and the conveying component, receives qualified material powder conveyed by the weighing component and simultaneously guides and electrifies the material powder. The negative electron imparting component includes a discharge needle 401, a friction electrification disk 402, and two sets of charge sensors 405 sequentially arranged along the flow path. The discharge needle 401 is installed inside the electrification channel; after being energized, it generates corona discharge, ionizing the surrounding air to form negative ions. When the material powder flows through the area where the discharge needle 401 is located, the negative ions adhere to the material surface, achieving initial electrification. The friction electrification disk 402 can be driven to rotate by a concentric dual-axis motor 408. After the powder enters the triboelectric disk 402, it is energized by friction. The annular negative electrode 403 and the annular positive electrode 404 on the triboelectric disk 402 are arranged in a ring along the disk surface and are isolated from each other and not electrically connected. The annular negative electrode 403 or the annular positive electrode 404 can be turned on separately according to the energizing requirements. By turning on the annular negative electrode 403 or the annular positive electrode 404, a positive electric field or a reverse electric field is generated accordingly to enhance or adjust the energizing effect. Two sets of charge sensors 405 are arranged after the primary energizing area and after the secondary energizing area, respectively, to collect the charge density data of the powder after the primary energizing and the charge density data after the secondary energizing, and transmit the data synchronously to the control module 103.Control module 103 is installed on one side of the conveyor frame 101. Control module 103 receives material weight data transmitted by Wheatstone module 301 and charge density data transmitted by two sets of charge sensors 405. Combining this with preset target weight and charge density thresholds, it determines whether the material's charge level meets the standard. Based on the charge level determination, control module 103 sends on / off commands to the annular negative electrode 403 or annular positive electrode 404. When the charge level is insufficient, the annular negative electrode 403 is activated to strengthen the charge level; when the charge level is excessive, the annular positive electrode 404 is activated to weaken the charge. Simultaneously, control module 103 controls the connection of the first energized electrode 204 or the second energized electrode 205 of multiple electro-adsorption structures according to the material's conveying position. When the material enters the conveying area, the electro-adsorption structures generate adsorption force to fix the material; when the material reaches the discharge end, the electro-adsorption structures generate repulsive force to detach the material, ensuring stable material conveying and complete unloading. Control module 103 is connected to external circuits and controls the supply of power to other components.

[0025] As shown in Figures 2 and 3, the electro-adsorption structure includes a conveyor housing 202 mounted on a conveyor belt. A mounting groove 203 is provided on the top of the conveyor housing 202. A first energized electrode 204 and a second energized electrode 205 are disposed within the mounting groove 203. The first energized electrode 204 and the second energized electrode 205 are arranged in an S-shape and are not electrically connected. An insulating layer 206 is filled in the gap between the first energized electrode 204 and the second energized electrode 205. The surface of the insulating layer 206 is flush with the surfaces of the first energized electrode 204 and the second energized electrode 205. On / off valves 211 are connected to both ends of the first energized electrode 204 and the second energized electrode 205. The on / off valves 211 are electrically connected to a control module 103, which uniformly regulates the on / off state. The first energized electrode 204 is the positive electrode, and the second energized electrode 205 is the negative electrode.

[0026] Specifically, when the negatively charged powder material, after being treated by the negative electron-attributing component, falls onto the conveying surface of the top of the insulating plate 210, the control module 103 connects to the first energized electrode 204. After the first energized electrode 204 is energized, a uniformly covering positive electrostatic field is formed in the area where the insulating plate 210 is located. This electrostatic field can penetrate the insulating plate 210 and act on the powder material on its surface. Utilizing the physical principle of attraction between opposite charges, the negatively charged powder material is firmly adsorbed onto the conveying surface of the insulating plate 210. Throughout the entire transportation process as the conveyor belt mechanism 201 moves the electro-adsorption structure, this adsorption force continues to act, effectively preventing the powder material from falling off or flying due to conveyor belt vibration, turning, or external forces, ensuring the integrity of the material transportation. When the electro-adsorption structure moves with the conveyor belt to the preset discharge position, the position sensor installed in the discharge area... (Not shown in the figure) A position signal is sent to the control module 103. The control module 103 disconnects the on / off valve 211 corresponding to the first energized electrode 204 to cut off the power supply, and at the same time connects the on / off valve 211 corresponding to the second energized electrode 205, so that the second energized electrode 205 is powered and forms a reverse electrostatic field in the area of ​​the insulating plate 210. This reverse electrostatic field generates a repulsive force between the like charges of the negative electrons carried by the material powder. Under the push of this repulsive force, the material powder leaves the conveying surface of the insulating plate 210 and falls into the discharge device below. This unloading method replaces the traditional mechanical unloading that relies on scraping, avoids material residue caused by mechanical friction between the scraper and the conveying surface, reduces hard wear between components, extends the overall service life of the device, and does not generate mechanical impurities during the unloading process, thus avoiding contamination of the material powder.

[0027] Multiple sets of connecting seats 207 are fixedly installed on the surface of the conveyor belt corresponding to multiple sets of electro-adsorption structures. The distribution spacing of the multiple sets of connecting seats 207 is consistent with the arrangement spacing and number of electro-adsorption structures, ensuring that each set of electro-adsorption structures can be fixedly installed on the conveyor belt through the corresponding connecting seat 207. The bottom of the conveyor housing 202 has a connecting slot 208. During installation, the top of the connecting seat 207 is inserted into the connecting slot 208 from bottom to top. The inner walls on both sides of the connecting slot 208 have corresponding through connecting holes 209. After the connecting hole 209 is aligned with the pre-set threaded hole at the top of the connecting seat 207, the screw is passed through the connecting hole 209 and screwed into the threaded hole of the connecting seat 207 and tightened. The tightening force of the screw keeps the conveyor housing 202 parallel to the surface of the conveyor belt. To prevent material dust from shifting during conveying due to installation tilt, an insulating plate 210 is fixedly installed at the opening of the mounting groove 203 at the top of the conveying housing 202 with sealant. The sealant is evenly filled in the gap between the insulating plate 210 and the top of the conveying housing 202, thus sealing the mounting groove 203. The conveying surface of the insulating plate 210 remains flat and smooth, receiving the material powder after being treated by the negative electron imparting component, and effectively isolating the first energized electrode 204 and the second energized electrode 205 in the mounting groove 203 from the material powder, avoiding direct contact between the first energized electrode 204 and the second energized electrode 205 and the material powder, which could cause electrical conductivity or short circuit problems. At the same time, the gaps filled by the sealant can prevent material powder from entering the interior of the mounting groove 203.

[0028] As shown in Figures 4 and 5, the negative electron imparting component includes an electron imparting conduit 406. The conveyor frame 101 corresponds to the transport area at the top of the transport component. Two sets of oppositely arranged side plates 105 are fixedly installed via multiple sets of connecting brackets 104. Mounting plates 106 extend vertically from the bottom of each set of side plates 105. Rubber plates 107 are adhered to the bottom of each set of mounting plates 106. The rubber plates 107 have elastic deformation capabilities. The bottom of the rubber plates 107 contacts the surface of the conveyor belt of the conveyor belt mechanism 201. The adjacent side of the two sets of rubber plates 107 contacts the side of the conveyor housing 202 of the electro-adsorption structure. The elasticity of 107 achieves sealing, reducing the flying of material powder during the conveying process. An electrified pipe 406 is fixedly installed between the two sets of side plates 105. The electrified pipe 406 has a hollow tubular structure, and its top end corresponds to the discharge end of the weighing component to receive the weighed material powder. Multiple sets of discharge needles 401 are installed through the top of the electrified pipe 406. The multiple sets of discharge needles 401 are arranged in an alternating manner along the axial direction of the electrified pipe 406. The tips of all discharge needles 401 face the ionization channel inside the electrified pipe 406, and the needle tips are completely inserted into the ionization channel to ensure that the ionization range can fully cover the channel cross section. Specifically, after the weighed material powder passes through the feeding structure and enters the top opening of the electrification pipe 406, the material powder flows downward along the ionization channel inside the electrification pipe 406. At this time, the control module 103 supplies power to multiple sets of discharge needles 401. After the discharge needles 401 are energized, they generate corona discharge due to the tip effect, ionizing the surrounding air in the ionization channel and forming a large number of negative ions. These negative ions are distributed in the ionization channel. When the material powder continues to pass through the ionization channel, the negative ions will quickly attach to the surface of the material powder particles, performing the initial electrification treatment on the material powder, so that the material powder carries a negative charge. At the same time, the staggered discharge needles 401 can ensure that the negative ions in the ionization channel are evenly distributed, avoiding the situation of insufficient local electrification of the material powder and ensuring the consistency of the initial electrification.

[0029] As shown in Figures 5, 6, and 7, a mounting base 407 is provided at the bottom of the electrostatic conduit 406. A concentric dual-axis motor 408 is fixedly mounted at the bottom of the mounting base 407. The concentric dual-axis motor 408 is equipped with two sets of independently controllable output shafts. The two sets of output shafts perform different functions and do not interfere with each other. The bottom end of one set of output shafts is fixedly connected to the friction base 409, driving the friction base 409 to rotate. The periphery of the friction base 409 is integrally formed with the friction electrostatic disk 402. The friction electrostatic disk 402 has an annular friction electrostatic area and a powder guiding area distributed from the inside to the outside. The top of the friction electrostatic disk 402 is uniformly provided with multiple sets of friction electrostatic protrusions 410 corresponding to the friction electrostatic area. An annular negative electrode 403 and an annular positive electrode 40 are provided on the friction base 409. 4. The annular negative electrode 403 and the annular positive electrode 404 are isolated from each other. A set of charge sensors 405 is fixedly installed on the friction base 409 near the triboelectric region. The charge sensors 405 are used to detect the secondary charge density data of the material powder in real time and transmit it to the control module 103. Multiple sets of triboelectric protrusions 410 are electrically connected to the annular negative electrode 403 and the annular positive electrode 404. When the annular negative electrode 403 is on, the annular positive electrode 404 remains off. A uniformly distributed negative electrode electric field is formed in the triboelectric region through the multiple sets of triboelectric protrusions 410. When the annular positive electrode 404 is on, the annular negative electrode 403 remains off. A uniformly distributed positive electrode electric field is formed in the triboelectric region through the multiple sets of triboelectric protrusions 410.

[0030] Specifically, when the charge sensor 405 on the friction base 409 detects that the charge density of the material powder does not meet the preset standard and there is insufficient charge, the control module 103 connects to the annular negative electrode 403, forming a negative electrode electric field on the triboelectric region where multiple sets of triboelectric protrusions 410 are located. At this time, the concentric dual-axis motor 408 drives the triboelectric disk 402 to rotate. While the material powder continuously rubs against the multiple sets of triboelectric protrusions 410 in the triboelectric region, it is guided by the negative electrode electric field, and more negative ions adhere to the surface of the material powder, achieving charging and energy replenishment. When the charge sensor 405 detects that the charge density of the material powder exceeds the preset standard and there is excessive charge, the control module 103 issues a command to connect the power supply circuit of the annular positive electrode 404, forming a negative electrode electric field on the multiple sets of triboelectric protrusions 410. A stable positive electrode electric field is formed on the triboelectric region where the electric protrusion 410 is located. This positive electrode electric field adsorbs excess negative charge on the surface of the material powder, achieving charging and energy reduction. The control module 103 switches the on / off state of the annular negative electrode 403 or the annular positive electrode 404 on the triboelectric disk 402 according to the detection data of the charge sensor 405. In conjunction with the rotational friction of the triboelectric disk 402, the charging and energy reduction operation of the material powder is completed. This ensures that the material powder always obtains a stable charge density that is compatible with the subsequent conveying requirements. It avoids insufficient adsorption force and material falling off during the conveying process due to insufficient charging, or excessive charging causing the adsorption to be too tight and difficult to peel off. This solves the problem of uneven charging that is easy to occur in the single charging method of traditional conveying devices, and ensures the stable operation of the subsequent electro-adsorption structure.

[0031] Multiple sets of guide plates 411 are provided on the top of the triboelectric disk 402 corresponding to the powder guiding area. Each set of guide plates 411 is fixed perpendicularly to the surface of the triboelectric disk 402. When the concentric dual-axis motor 408 drives the triboelectric disk 402 to rotate in the forward direction, the multiple sets of guide plates 411 rotate accordingly, pushing the material powder in the powder guiding area that has not been fully charged or whose charge density does not meet the standard back to the triboelectric area for secondary charging. When the concentric dual-axis motor 408 drives the triboelectric disk 402 to rotate in the reverse direction, the guiding direction of the multiple sets of guide plates 411 changes accordingly, smoothly guiding the material powder in the powder guiding area that has been charged to the standard onto the electro-adsorption structure of the transport component. A receiving groove 412 is formed by a recess in the center of the top of the friction base 409. The receiving groove 412 is used to receive the material powder falling from the feed trough 414. The bottom end of another set of output shafts of the concentric dual-axis motor 408 is fixedly connected to the assembly disk 413, carrying... The moving mixing disk 413 rotates independently. A through feed inlet 414 is provided on the mixing disk 413 at the position corresponding to the receiving groove 412. Multiple sets of guide vanes 415 are evenly arranged in the circumferential direction inside the feed inlet 414. The guide vanes 415 are installed at an angle of 30-60 degrees to the surface of the mixing disk 413. A receiving cover 416 is fixedly installed on the top of the mixing disk 413. The receiving cover 416 is used to collect the material powder falling from the electrification pipe 406. The discharge end of the electrification pipe 406 is connected to the top opening of the receiving cover 416 through the guide cover 417, so that the material powder after the initial electrification can be completely introduced into the receiving cover 416. Another set of charge sensors 405 is fixedly installed inside the guide cover 417. The charge sensors 405 face the material flow path, detect the initial electrification charge density data of the material powder after the initial electrification, and transmit it to the control module 103 to provide a basis for the parameter adjustment of the subsequent secondary electrification.

[0032] Specifically, when there is material powder in the receiving hood 416, the material powder flows downward under its own gravity and enters the feed trough 414 through the gaps between the multiple sets of guide vanes 415. The oblique installation of the guide vanes 415 does not obstruct the material from falling, and at the same time, it can play a preliminary guiding role for the material. When there is no material powder in the receiving hood 416, the control module 103 controls the concentric dual-axis motor 408 to drive the multiple sets of guide vanes 415 to rotate based on the detection data of the charge sensor 405. The moving guide vanes 415 generate relative motion with the air, blowing a continuous airflow into the feed inlet 414 and receiving trough 412 area. This airflow can fully agitate the material powder between the triboelectric zone and the feed inlet 414, ensuring that the material powder is in full contact with the triboelectric protrusions 410 and the electric field, achieving uniform charging. At the same time, the rotating multiple sets of guide vanes 415 form a barrier to prevent the material powder from flowing back towards the feed inlet 414 and receiving hood 416, avoiding material accumulation or insufficient charging. The concentric dual-axis motor 408 can drive the triboelectric disk 402 to rotate in both directions. When rotating in the forward direction, the triboelectric disk 402 uses the guide plate 411 to return the material powder in the powder guiding area to the triboelectric area, and performs secondary charging for the material with insufficient charging to ensure that the final charge density meets the preset standard. When the triboelectric disk 402 rotates in the reverse direction, the guide plate 411 smoothly transports the material powder in the powder guiding area that has reached the standard charging to the transport component. With the on / off control of the annular positive electrode 404 and the annular negative electrode 403, targeted adjustments can be made for insufficient or excessive charging to ensure that the material powder can obtain a charge density that meets the requirements of subsequent adsorption and transport.

[0033] As shown in Figures 8, 9, and 10, the weighing component includes a receiving conveyor belt structure 302. The receiving conveyor belt structure 302 can circulate in a preset direction, conveying the received material powder to the feeding end of the negative electron imparting component. A cutting plate 303 is fixedly installed at the discharge end of the feeding hopper 102. The cutting plate 303 is perpendicular to the discharge direction of the feeding hopper 102 and is used to intercept the material powder in the feeding hopper 102 to prevent the material powder from continuously falling. A discharge slot 304 is opened on the cutting plate 303, and the discharge end of the discharge slot 304 is... The hopper 102 is equipped with a flip-top plate and a discharge pusher 306 inside the discharge trough 304. The discharge pusher 306 can slide horizontally along the discharge trough 304. One end of the discharge pusher 306 is fixedly connected to the piston rod of the cylinder 305. When the cylinder 305 retracts the piston rod, it pushes the discharge pusher 306 to move within the discharge trough 304, pushing the accumulated material powder in the discharge trough 304 onto the receiving surface of the receiving conveyor belt structure 302. A connecting frame 307 is provided at the bottom of the feed hopper 102. The two sides of the connecting frame 307 are fixedly connected to two sets of side plates 105 respectively. A rotating seat 308 is fixedly installed on the inner wall of one side of the connecting frame 307. The rotating seat 308 is rotatably connected to one side of the receiving conveyor belt structure 302. A placement support 309 is fixedly installed on the inner wall of the other side of the connecting frame 307. A placement groove 310 is opened on the top of the placement support 309. A piezoelectric plate 311 is embedded in the placement groove 310. The piezoelectric plate 311 can sense pressure changes and convert them into electrical signals. A mass plate 312 is fixedly installed at the bottom of the side of the receiving conveyor belt structure 302 away from the rotating seat 308. The bottom of the mass plate 312 is connected to the pressure plate 302. The top of the piezoelectric plate 311 is in contact with the material powder on the receiving conveyor belt structure 302. The weight of the material is transferred to the mass plate 312 through the receiving conveyor belt structure 302, and then the mass plate 312 applies pressure to the piezoelectric plate 311. The bottom of the support 309 is fixedly provided with a Wheatstone module 301. The Wheatstone module 301 is electrically connected to the piezoelectric plate 311 and the control module 103 respectively. The Wheatstone module 301 is provided with a Wheatstone bridge, which is used to obtain the electrical signal of the resistance change in the piezoelectric plate 311 and transmit it to the control module 103.Specifically, when the material powder falls from the feed hopper 102 into the discharge trough 304, the cylinder 305 retracts the pneumatic rod, pulling the discharge pusher 306 to push the material powder onto the receiving conveyor belt structure 302. The weight of the material powder is transmitted to the piezoelectric plate 311 through the receiving conveyor belt structure 302 and the mass plate 312, causing a change in resistance in the piezoelectric plate 311. After detecting this change in resistance, the Wheatstone bridge in the Wheatstone module 301 transmits its electrical signal to the control module 103, thereby acquiring the material weight data. By comparing the weight data with the preset target weight parameters, it is determined whether the material weight meets the requirements. If it does, the receiving conveyor belt structure 302 is controlled to operate, directly conveying the weighed material powder to the negative electron imparting component. The negative electron imparting component directly receives the weighed material powder and simultaneously performs the electrification operation while guiding the material along the flow path. This makes the connection between the weighing and electrification processes more seamless, avoiding uneven flavoring of different batches of products due to material quantity deviations during production. Furthermore, the electrification process and the flow guiding process are carried out simultaneously.

[0034] Please refer to Figure 11. This invention also provides a powder electrification method for an automatic seasoning conveying device used in food production. Applied to the aforementioned automatic seasoning conveying device, the method includes the following steps: S1: Obtain target weight parameter data; activate cylinder 305 to transfer material powder to the receiving surface of the weighing component; obtain material weight data based on the Wheatstone module 301; obtain a weight determination result based on the material weight data and target weight parameter data; and transfer the material powder into the negative electron electrification component. Specifically, the control module 103 can obtain target weight parameter data through a preset program or manual input, as a basis for single-pass feeding. The weight standard of the feeding material powder is determined by the retraction of the pneumatic rod by the starting cylinder 305, which pulls the discharge pusher 306 to slide horizontally within the discharge slot 304 of the cutting plate 303. This transfers the material powder from the discharge slot 304 to the receiving surface of the receiving conveyor belt structure 302 of the weighing component. After the material powder completely falls onto the receiving surface, its weight is transferred through the receiving conveyor belt structure 302 to the mass plate 312 at its bottom. The mass plate 312 converts this weight into pressure and applies it to the piezoelectric plate 311 in the placement slot 310 of the placement support 309. The piezoelectric plate 311 generates a change in resistance after being pressed, and the Wheatstone module 3, which is electrically connected to the piezoelectric plate 311... 01 The resistance change is detected in real time and transmitted to the control module 103. The resistance change is converted into a corresponding weight electrical signal to obtain the material weight data. The control module 103 compares the material weight data with the pre-acquired target weight parameter data and obtains the weight judgment result based on the comparison result. If the material weight data is within the allowable fluctuation range of the target weight parameter data, it is judged as qualified; if it exceeds the allowable fluctuation range, it is judged as unqualified. For the material powder judged as qualified, the control module 103 further sends an operation command to the receiving conveyor belt structure 302. After the receiving conveyor belt structure 302 starts, it receives the material powder on it. The material is transferred from the weighing stage to the charging stage by being conveyed into the receiving hood 416 of the negative electron charging component. If the actual weight is lower than the lower limit of the target weight parameter, the control module 103 determines that the weight is unqualified. In this case, the receiving conveyor belt structure 302 will not be activated, but the cylinder 305 will be restarted to transfer more material powder to the receiving surface for re-judgment. This process continues until the weight is qualified before the chili powder is transferred into the negative electron charging component. When the weight parameter exceeds the upper limit of the target weight parameter, the control module 103 determines that the weight is unqualified and will not activate the receiving conveyor belt structure 302 to transfer the material into the negative electron charging component. At the same time, a signal indicating that the weight exceeds the limit will be issued to the staff to prevent the excess material from entering the subsequent charging and conveying stages and affecting the product's flavor.

[0035] S2: Based on the material weight data, the voltage of the discharge needle 401 is adapted to generate corona discharge in the ionization channel, ionizing the surrounding air to form negative ions. This initially charges the material powder passing through the ionization channel and obtains the initial charge density data. Specifically, after obtaining the material weight data, the output voltage of the high-voltage power supply to the discharge needle 401 is adjusted according to the preset correspondence between weight and discharge needle 401 voltage. Different material weights correspond to different voltages; when the material quantity is large, the voltage is increased to ensure a sufficient number of negative ions generated by ionization, and when the material quantity is small, the voltage is decreased to avoid excessive negative ions. The specific data depends on the actual situation. After the voltage adaptation is completed, the control module 103 controls the external circuit to discharge multiple sets of discharge needles 40 at the top of the charging pipe 406. 1. Power supply: After the discharge needle 401 is energized, a corona discharge is generated in the ionization channel due to the tip effect. This discharge process ionizes the air around the channel, causing the molecules in the air to be converted into a large number of negative ions. These negative ions are evenly distributed in the ionization channel. When the weighed material powder is transported to the top of the charging pipe 406 through the receiving conveyor belt structure 302 and flows downward along the ionization channel, the negative ions in the channel will quickly attach to the surface of the material powder particles, completing the initial charging of the material powder and allowing the material powder to initially carry a negative charge. At the same time, another set of charge sensors 405 installed in the flow guide shroud 417 monitors the charge density of the material powder at the outlet of the ionization channel in real time and transmits the collected initial charging charge density data to the control module 103.

[0036] S3: Based on the initial charge density data and the preset target charge density threshold data, the rotation speed of the triboelectric disk 402 is adapted to perform secondary charging on the material powder entering the triboelectric zone and the secondary charge density data is acquired in real time. Specifically, after receiving the initial charge density data transmitted by the charge sensor 405 in the guide shroud 417, the control module 103 compares the initial charge density data with the preset target charge density threshold data, and adjusts the output speed of the concentric dual-axis motor 408 according to the comparison result, thereby changing the rotation speed of the triboelectric disk 402. The rotation speed of the triboelectric disk 402 directly affects the friction frequency and contact time of the material powder with the triboelectric protrusion 410 in the triboelectric zone. The higher the rotation speed, the more times the material rubs against the protrusion and the longer the contact time, the more negative charges are generated by secondary charging, and vice versa.

[0037] Furthermore, if the initial charge density data is within the [0, 60]% range of the preset target charge density threshold data, it indicates that the negative charge carried by the material after the initial charge is insufficient. In this case, the rotation speed of the triboelectric charging disk 402 needs to be adjusted to 120%-150% of the preset rotation speed. By increasing the rotation speed, the friction intensity is enhanced and the friction time is extended, allowing the material powder to rub fully in the triboelectric charging zone and replenish more negative charge. If the initial charge density data is within the (60, 100) range of the preset target charge density threshold data, it indicates that a certain amount of negative charge has been accumulated during the initial charge. There is no need to significantly adjust the rotation speed. Adjusting the rotation speed of the triboelectric charging disk 402 to 80%-120% of the preset rotation speed is sufficient. By fine-tuning the rotation speed, the charge density after the second charge can be ensured to meet the standard. If the initial charge density data is greater than or equal to 60%, it indicates that the material powder has insufficient negative charge after the initial charge. If the initial charge density is equal to the preset target threshold, it indicates that the initial charge has met or exceeded the requirements. At this time, the annular negative electrode 403 remains unenergized to avoid excessive charge due to additional negative charge. Meanwhile, the triboelectric charging disk 402 can be rotated in the opposite direction as needed to directly transport the material powder to the transport component. After the material powder enters the receiving groove 412 of the friction base 409 through the feed trough 414, it will enter the triboelectric charging area of ​​the triboelectric charging disk 402 under the action of centrifugal force. As the triboelectric charging disk 402 rotates, it will continuously rub against multiple sets of triboelectric charging protrusions 410 to complete the secondary charge. During this process, the charge sensor 405 installed on the friction base 409 monitors the change in charge density of the material powder in real time, collects the secondary charge density data, and transmits it to the control module 103.

[0038] S4: Obtain the charge density data of the secondary charge to determine the charge compliance, and transport the material powder to the transport component according to the charge compliance result.

[0039] Specifically, if the secondary charge density data is within the range of 90%-110% of the preset target charge density threshold data, it indicates that the amount of negative charge carried by the material is qualified and can form a stable adsorption with the positive electrostatic field of the electroadsorption structure, and is judged as meeting the charging standard; if the secondary charge density data is lower than 90% of the preset target charge density threshold data, it indicates that the negative charge carried by the material is insufficient, and subsequent adsorption may be weak or the material may fall off during transportation, and is judged as insufficient charging; if the secondary charge density data is higher than 110% of the preset target charge density threshold data, it indicates that the negative charge carried by the material is excessive, and subsequent adsorption may be too tight or difficult to peel off during unloading, and is judged as excessive charging.

[0040] Based on the above judgment results, the control module 103 performs the corresponding charging replenishment or de-charging operation; when the charging is insufficient, the control module 103 connects to the annular negative electrode 403 on the friction chassis 409. After the annular negative electrode 403 is turned on, a stable negative electrode electric field is formed in the friction charging area through the friction charging protrusion 410. This electric field will guide more negative charges in the surrounding environment to adhere to the surface of the material powder. During this process, the charge sensor 405 on the friction chassis 409 continuously collects the material charge density data and feeds it back to the control module 103. The control module 103 monitors the data changes in real time until the secondary charging charge density data enters the 90%-110% range of the preset target charge density threshold data. At this time, the judgment result is updated to charging up to standard, and the annular negative electrode 403 is disconnected; when the charging is excessive, the control module 103 connects to the annular negative electrode 403 on the friction chassis 409. The annular positive electrode 404, after being turned on, forms a stable positive electrode electric field in the triboelectric region through the triboelectric protrusion 410. This positive electrode electric field adsorbs and peels off excess negative charges on the surface of the material powder. The data is monitored in real time by the charge sensor 405 until the data enters the target range. The result is updated to indicate that the charging meets the standard, and the annular positive electrode 404 is disconnected. When the charging meets the standard, the control module 103 disconnects the annular negative electrode 403 and the annular positive electrode 404. At the same time, it controls the concentric dual-axis motor 408 to drive the friction chassis 409 to rotate in the opposite direction. The friction chassis 409 drives the triboelectric disk 402 to rotate in the opposite direction. The guide plate 411 on the triboelectric disk 402 changes its guiding direction accordingly, guiding the material powder that has met the charging standard in the powder guiding area to one of the electro-adsorption structures of the transport component, ensuring the stability of the subsequent electro-adsorption and unloading process.

[0041] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. An automatic seasoning conveying device for food production, characterized in that, include: A conveyor frame is provided, on which a transport assembly is mounted. The transport assembly includes a conveyor belt mechanism mounted on the conveyor frame. Multiple sets of electro-adsorption structures are arranged on the conveyor belt along the transport direction of the material powder, and these electro-adsorption structures are not electrically connected. A feed hopper is mounted above the conveyor belt mechanism. The discharge end of the feed hopper is equipped with a weighing assembly for weighing each batch of material discharged. The weighing assembly includes a Wheatstone module for acquiring material weight data. A negative electron imparting assembly is installed between the feed hopper and the transport assembly. The negative electron imparting assembly guides the weighed material powder onto the transport assembly and imparts electrons to the material powder. The material powder is charged, and the transport component includes a discharge needle for initial charging of the material powder and a triboelectric charging disk for secondary charging, which are arranged sequentially on the flow path. The triboelectric charging disk is equipped with a ring-shaped negative electrode and a ring-shaped positive electrode, which are not electrically connected. There are also two sets of charge sensors arranged sequentially on the flow path to obtain the charge density data of the initial charging and the charge density data of the secondary charging. The control module is installed on one side of the conveyor frame. The control module is used to control the on and off of the ring-shaped negative electrode or the ring-shaped positive electrode according to the charging standard judgment result, and to control the multiple sets of electro-adsorption structures to perform electro-adsorption or electro-repulsion.

2. The automatic seasoning conveying device for food production according to claim 1, characterized in that: The electro-adsorption structure includes a conveyor housing mounted on a conveyor belt. A mounting groove is provided on the top of the conveyor housing, and a first energized electrode and a second energized electrode are disposed within the mounting groove. The first and second energized electrodes are not electrically connected and are arranged in an S-shape. An insulating layer is disposed between the first and second energized electrodes, and the insulating layer is flush with the surfaces of the first and second energized electrodes. On / off valves are provided at both ends of the first and second energized electrodes to connect to a control module. The first energized electrode is the positive electrode, and the second energized electrode is the negative electrode. When the control module connects to the first energized electrode, a positive electrostatic field is generated for electro-adsorption of the material powder. When the control module connects to the second energized electrode, a reverse electrostatic field is generated for electro-repulsion of the material powder.

3. The automatic seasoning conveying device for food production according to claim 2, characterized in that: Multiple sets of connecting seats are fixedly installed on the surface of the conveyor belt corresponding to multiple sets of electro-adsorption structures. A connecting slot is opened at the bottom of the conveyor shell, and the top of the connecting seat passes through the connecting slot. Connecting holes are opened on both sides of the connecting slot. The connecting holes and the top of the connecting seat are fixedly connected by screws to make the conveyor shell parallel to the surface of the conveyor belt. An insulating plate is fixedly installed on the top of the conveyor shell with sealant. The insulating plate is located at the opening of the mounting slot.

4. The automatic seasoning conveying device for food production according to claim 1, characterized in that: The negative electron imparting component includes an imparting conduit. The conveyor frame, corresponding to the transport area at the top of the transport component, has two sets of side plates fixedly installed via multiple sets of connecting brackets. Each set of side plates has a mounting plate at its bottom, and each set of mounting plates has a rubber plate at its bottom. The bottom of the rubber plate contacts the conveyor belt, and the adjacent side of the two sets of rubber plates contacts the side of the conveyor shell of the electro-adsorption structure. An imparting conduit is installed between the two sets of side plates, and multiple sets of discharge needles are installed at the top of the imparting conduit. The multiple sets of discharge needles are arranged in an alternating manner and pass through the ionization channel inside the imparting conduit.

5. The automatic seasoning conveying device for food production according to claim 4, characterized in that: A mounting base is installed at the bottom of the electrified pipe, and a concentric dual-axis motor is installed at the bottom of the mounting base. Two independent output shafts are mounted on the concentric dual-axis motor. The bottom end of one output shaft is connected to a friction base, and a friction electrified disk is fixedly installed around the friction base. The friction electrified disk has an annular friction electrified area and a powder guiding area distributed from the inside to the outside. The top of the friction electrified disk has multiple sets of friction electrified protrusions corresponding to the friction electrified area. The multiple sets of friction electrified protrusions are electrically connected to the annular negative electrode and the annular positive electrode. One set of charge sensors is installed on the friction base. When the annular negative electrode is conducting, the annular positive electrode is not conducting, and a negative electrode electric field is formed in the friction electrified area through the multiple sets of friction electrified protrusions. When the annular positive electrode is conducting, the annular negative electrode is not conducting, and a positive electrode electric field is formed in the friction electrified area through the multiple sets of friction electrified protrusions.

6. The automatic seasoning conveying device for food production according to claim 5, characterized in that: Multiple sets of guide plates are installed on the top of the triboelectric disk corresponding to the powder guiding area. When the concentric dual-axis motor rotates the triboelectric disk in the forward direction, the multiple sets of guide plates draw the material powder in the powder guiding area back to the triboelectric disk. When the concentric dual-axis motor rotates the triboelectric disk in the reverse direction, the multiple sets of guide plates guide the material powder in the powder guiding area to the conveying component. A material receiving groove is installed on the top of the friction base, and a splicing disk is connected to the bottom of another set of output shafts. The splicing disk has a feed inlet corresponding to the material receiving groove, and multiple sets of obliquely installed guide vanes are installed in the feed inlet for splicing. A receiving hood is installed on the top of the tray. The discharge end of the electrified pipe guides the initially electrified material powder into the receiving hood through a flow guide hood. Another set of charge sensors is installed inside the flow guide hood. When there is material powder in the receiving hood, the material powder can enter the feed trough through the gaps between the multiple sets of flow guide blades. When there is no material powder in the receiving hood, the concentric dual-axis motor rotates the multiple sets of flow guide blades, which can blow airflow into the feed trough, causing the material powder to tumble between the feed trough and the friction electrification area. At the same time, the rotating multiple sets of flow guide blades prevent the material powder from flowing back into the feed trough.

7. The automatic seasoning conveying device for food production according to claim 4, characterized in that: The weighing assembly includes a receiving conveyor belt structure. A cutting plate is installed at the discharge end of the feed hopper, with a discharge slot on the cutting plate. A discharge pusher, driven by a cylinder, is installed inside the discharge slot to convey the powdered material from the discharge slot to the receiving conveyor belt structure. A connecting frame is installed at the bottom of the feed hopper, connecting to two sets of side plates. A rotating seat, rotatably connected to the receiving conveyor belt structure, is installed on the inner wall of one side of the connecting frame. A placement support is installed on the inner wall of the other side, with a placement slot containing a piezoelectric plate. A mass plate, in contact with the top of the piezoelectric plate, is located on the side of the receiving conveyor belt structure away from the rotating seat. A Wheatstone module, electrically connected to the piezoelectric plate and control module, is installed at the bottom of the placement support.

8. A method for electrifying powder in an automatic seasoning conveying device for food production, applied to the automatic seasoning conveying device for food production as described in any one of claims 1 to 7, characterized in that, The process includes the following steps: S1: Obtain target weight parameter data, start the pusher cylinder to transfer the material powder to the receiving surface of the weighing component, obtain material weight data based on the Wheatstone module, obtain weight judgment result based on material weight data and target weight parameter data, and transfer the material powder into the negative electron imparting component; S2: Based on the material weight data, perform discharge needle voltage adaptation, generate corona discharge in the negative electron imparting channel to ionize the surrounding air and form negative ions, perform initial energization on the material powder passing through the negative electron imparting channel and obtain initial energization charge density data; S3: Based on the initial energization charge density data and preset target charge density threshold data, perform rotation speed adaptation on the friction energizing disk, perform secondary energization on the material powder entering the friction chassis and friction energizing disk and obtain secondary energization charge density data in real time; S4: Based on the secondary energization charge density data, obtain energization compliance judgment result, and transport the material powder to the transport component according to the energization compliance judgment result.

9. The powder electrification method of an automatic seasoning conveying device for food production according to claim 8, characterized in that, The rotational speed of the triboelectric disk is adapted based on the initial charge density data and the preset target charge density threshold data, including: if the initial charge density data is [0, 60]% of the preset target charge density threshold data, the rotational speed of the triboelectric disk is adjusted to 120%-150% of the preset rotational speed; if the initial charge density data is (60, 100) of the preset target charge density threshold data, the rotational speed of the triboelectric disk is adjusted to 80%-120% of the preset rotational speed; if the initial charge density data is greater than or equal to the preset target charge density threshold data, the annular negative electrode is not energized.

10. The powder electrification method of an automatic seasoning conveying device for food production according to claim 9, characterized in that, The process of obtaining the charging compliance determination result based on the secondary charging charge density data includes: if the secondary charging charge density data is between 90% and 110% of the preset target charge density threshold data, it is determined that the charging meets the standard; if the secondary charging charge density data is lower than 90% of the preset target charge density threshold data, it is determined that the charging is insufficient; if the secondary charging charge density data is higher than 110% of the preset target charge density threshold data, it is determined that the charging is excessive; and charging replenishment or energy reduction operations are performed based on the charging compliance determination result; wherein, if the charging compliance determination result indicates insufficient charging, the annular negative electrode connected to the friction chassis generates a negative electrode electric field to guide more negative charges. The charge is attached to the powder until the secondary charge density data is 90%-110% of the preset target charge density threshold data. The charge assignment result is considered to be compliant. If the charge assignment result is considered to be excessive, the annular positive electrode of the friction base generates a positive electrode electric field to strip the excess negative charge from the powder until the secondary charge density data is 90%-110% of the preset target charge density threshold data. The charge assignment result is considered to be compliant. If the charge assignment result is considered to be compliant, the annular negative electrode or the annular positive electrode is not connected, and the friction base is rotated in the opposite direction to discharge the powder to the transport component.

Images