A micro-dosing device for processing recycled modified plastic particles

Abstract

The present invention belongs to the technical field of plastic granulation equipment, and specifically relates to a micro-dosing device for processing recycled modified plastic particles, the micro-dosing device comprising a frame, a control cabinet being fixed at one end of the frame, a plurality of dosing modules being assembled inside the frame, and the dosing modules comprising a storage hopper, a distribution hopper and a discharge hopper arranged in sequence from top to bottom. The present invention drives the adjustment plate to move by a linear stepper motor, and can adjust the volume of each storage groove separately, so that the preset addition amount of the auxiliary agent is an integral multiple of the volume of the storage groove, thereby avoiding the phenomenon that the actual addition amount of the auxiliary agent does not match the preset addition amount. At the same time, after the number of additions of any storage groove is reached, the corresponding linear stepper motor is reversely operated, so that the semi-enclosed space of the storage groove is transformed into a closed space, thereby avoiding the phenomenon that the auxiliary agent inside the storage groove that carries the auxiliary agent and has not rotated to the lower end is difficult to take out.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic particle granulation equipment, and in particular relates to a micro-dosing device for processing recycled and modified plastic particles. Background Art

[0002] With the rapid development of the global plastics industry, the production and consumption levels of plastic products continue to rise. This trend has inevitably led to the intensification of the problem of waste plastic disposal. The effective management of waste plastics has become one of the key challenges in the field of environmental protection and sustainable development. In order to alleviate environmental pressure and improve the recycling efficiency of plastic resources, the recovery and subsequent utilization of recycled plastics have become an important topic of research and industrial application. In the processing of recycled plastics, in order to improve their performance and quality, it is usually necessary to add a series of functional additives, including but not limited to stabilizers, plasticizers, colorants, etc. The addition of these additives needs to be precisely controlled at the trace level to ensure that the final product meets the established performance standards.

[0003] In the current batching technology, spiral micro-dosing equipment and drum micro-dosing equipment are two common types of equipment. In particular, the drum micro-dosing equipment can accurately add additives to plastic raw materials through the built-in material distribution drum mechanism. The structural design of this equipment is more compact than that of the spiral micro-dosing equipment, so it shows significant advantages in terms of space occupation. This design not only improves the efficiency of the equipment, but also may have a positive impact on the overall layout and space utilization efficiency of the production line. Despite this, the existing drum micro-dosing equipment still has some problems in actual use:

[0004] 1. When adding additives through multiple feeding troughs set inside the feeding drum, since the volume of the feeding trough is a fixed value, when the total amount of additives added is not an integer multiple of the volume of the feeding trough, the last amount of additives added will be deviated (when the feeding trough is full, the additives carried by the feeding trough are fixed, if the feeding trough is not full, the amount of additives carried by the feeding trough is prone to deviation), resulting in the actual amount of additives not being consistent with the preset amount, and thus causing deviations in product performance;

[0005] 2. When the material distribution roller is delivering additives, the roller will carry the additives and rotate from the upper end to the lower end. Under the action of gravity, the additives fall from the inside of the roller. However, after the last delivery of additives, the additives in the material distribution trough that carry the additives and have not rotated to the lower end are difficult to remove;

[0006] 3. After the existing material distribution roller puts in the additives, a small amount of additives will remain on the side wall of the material distribution trough, which is extremely inconvenient to clean. In the subsequent production process, after the additive type is changed according to the type of plastic raw material, the additives remaining on the side wall may react chemically with the replaced additives, resulting in deviations in product performance.

[0007] Based on the above problems, this application document proposes a micro-dosing device for processing recycled modified plastic particles to improve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a micro-dosing device for processing recycled modified plastic particles. By driving an adjustment plate to move via a linear stepper motor, the volume of each storage groove can be adjusted separately, so that the preset addition amount of the additive is an integer multiple of the volume of the storage groove, thereby avoiding the phenomenon that the actual addition amount of the additive is inconsistent with the preset addition amount. At the same time, after the number of additions to any storage groove is reached, the corresponding linear stepper motor is operated in reverse, so that the semi-enclosed space of the storage groove is transformed into a closed space, thereby avoiding the additive remaining in the storage hopper from entering the storage groove, thereby avoiding the phenomenon that the additive inside the storage groove that carries the additive and has not been rotated to the lower end is difficult to take out.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A micro-dosing device for processing recycled modified plastic particles, comprising a frame, a control cabinet is fixed at one end of the frame, a plurality of dosing modules are assembled inside the frame, the dosing module comprises a storage hopper, a distribution hopper and a discharge hopper arranged in sequence from top to bottom, and the storage hopper and the distribution hopper, as well as the distribution hopper and the discharge hopper are all fixedly connected, a driving motor is fixed at one end of the distribution hopper, a central shaft is fixed at the output end of the driving motor, and the central shaft is rotatably connected to the distribution hopper, a distribution roller is fixed outside the central shaft and inside the distribution hopper, a plurality of storage grooves are opened inside the distribution roller, and the storage hopper and the storage groove, as well as the discharge hopper and the storage groove are adapted to each other, a first limit plate and a second limit plate are respectively arranged at both ends of the storage groove, and further comprising:

[0011] A plurality of adjusting parts, each of which is mounted on one end of the material distribution roller away from the driving motor, and each of the plurality of adjusting parts is matched with each of the plurality of material storage grooves, wherein the adjusting part comprises an adjusting plate, the adjusting plate is slidably connected to the outer side of the material distribution roller, and a first baffle and a second baffle are respectively arranged at both ends of the adjusting plate, and the second baffle is located inside the material storage groove;

[0012] Among them, after the batching module is operated, the adjustment plate moves relative to the position of the material dividing roller. When the second baffle plate and the second limit plate are in contact with each other, the material storage groove is a semi-closed space; when the second baffle plate and the first limit plate are in contact with each other, the material storage groove is a closed space. In the initial state, the material storage groove is a closed space.

[0013] In a preferred embodiment, the adjustment part also includes a linear stepper motor and a distance sensor. The linear stepper motor is fixed at one end of the second limit plate. A screw rod is arranged inside the linear stepper motor, and the screw rod and the adjustment plate are fixedly connected. The distance sensor is fixed inside the first baffle, and the linear stepper motor and the control cabinet as well as the distance sensor and the control cabinet are electrically connected.

[0014] In a preferred solution, a guide groove is formed at one end of the second limiting plate close to the adjusting plate, a sliding block is fixed inside the adjusting plate, and the guide groove and the sliding block are matched.

[0015] In a preferred embodiment, a plurality of cleaning slots are provided inside the second baffle, a nozzle is fixed inside the cleaning slot, an extension tube is fixed to the output end of the nozzle, and the end of the extension tube away from the nozzle passes through the interior of the first baffle, and the extension tube is made of a hard material.

[0016] In a preferred embodiment, a closing plate is rotatably connected to one end of the cleaning slot near the first limiting plate, and the closing plate is matched with the nozzle. In an initial state, the closing plate is completely located inside the cleaning slot.

[0017] In a preferred embodiment, a pin is provided on the closing plate, the closing plate and the cleaning slot are rotatably connected via the pin, and the pin is located at one end close to the central shaft.

[0018] In a preferred embodiment, a magnetic element is fixed to one end of the closing plate close to the cleaning slot.

[0019] In a preferred embodiment, a conductive slip ring is fixed to an outer end of the central shaft away from the driving motor, and the control cabinet and the second baffle are electrically connected via the conductive slip ring.

[0020] In a preferred solution, a gas-liquid slip ring is fixed to one end of the outer side of the central shaft and located at one end of the adjusting portion, and the gas-liquid slip ring and the extension tube are connected through a pipeline.

[0021] The technical effects achieved by the present invention are:

[0022] The present invention drives the adjustment plate to move by a linear stepping motor, and the volume of each material storage groove can be adjusted respectively by the cooperation of the material distribution roller and the adjustment plate, so that the preset addition amount of the auxiliary agent is an integral multiple of the volume of the material storage groove, thereby avoiding the phenomenon in the existing equipment that the last auxiliary agent addition amount is deviated due to the material distribution trough with a fixed volume not being filled, thereby avoiding the phenomenon that the actual auxiliary agent addition amount is inconsistent with the preset addition amount, and avoiding the situation that the product performance is deviated;

[0023] The present invention inputs a preset additive amount of the additive through a control cabinet, and calculates the number of times and the single amount of each storage groove to be added. When the number of times of any storage groove to be added is reached, the linear stepping motor corresponding to the storage groove is reversely operated, so that the semi-enclosed space of the storage groove is transformed into a closed space, thereby preventing the additive remaining in the storage hopper from entering the storage groove, thereby preventing the additive in the storage groove that carries the additive and has not rotated to the lower end from being difficult to take out after the total additive amount reaches the preset value.

[0024] The present invention delivers cleaning agent to the inside of the extension tube through a delivery pump module, and sprays it toward the inner wall of the material storage groove through a nozzle to clean the residual additives on the inner wall of the material storage groove, thereby avoiding chemical reaction between the residual additives and the replaced additives, which may cause deviation in product performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the batching module of the present invention;

[0027] Figure 3 It is a side cross-sectional view of the overall structure of the batching module of the present invention;

[0028] Figure 4 It is an end-on cross-sectional view of the overall structure of the batching module of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure inside the material distribution hopper of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the material distribution roller and the adjustment plate of the present invention;

[0031] Figure 7 It is an exploded view of the structure inside the material distribution hopper of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the regulating part of the present invention;

[0033] Fig. 9 It is a structural exploded diagram of the regulating part of the present invention;

[0034] Fig.10 It is a partial structural enlarged diagram of the regulating part of the present invention;

[0035] Fig.11 It is a structural schematic diagram of the closing plate of the present invention;

[0036] Fig.12 It is a schematic diagram of the rotation state of the material distribution roller of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 100. frame; 101. control cabinet;

[0039] 200, batching module;

[0040] 201, storage hopper; 202, distribution hopper; 203, discharge hopper; 204, drive motor; 205, central shaft; 206, distribution roller; 207, first limit plate; 208, second limit plate; 209, guide groove;

[0041] 210. Adjustment Department;

[0042] 211. Adjustment plate; 212. First baffle; 213. Second baffle; 214. Linear stepper motor; 215. Distance sensor; 216. Lead screw; 217. Slider; 218. Nozzle; 219. Extension tube; 220. Closing plate; 221. Pin; 222. Magnetic element; 223. Conductive slip ring; 224. Gas-liquid slip ring. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0047] Please see attached Figures 1 to 6As shown, it is the first embodiment of the present invention, which provides a micro-dosing device for processing recycled modified plastic particles, including a frame 100, a control cabinet 101 is fixed at one end of the frame 100, and a processing unit and a control module are arranged inside the control cabinet 101. The processing unit is used to obtain processing information, process and calculate processing data, and the control module is used to control the operation of electrical components. The frame 100 is equipped with a plurality of dosing modules 200 equidistantly from one end to the other end. The dosing module 200 includes a storage hopper 201, a distribution hopper 202 and a discharge hopper 203 arranged in sequence from top to bottom, and the storage hopper 201 and the distribution hopper 202 and the distribution hopper 202 and the discharge hopper 203 are all fixedly connected by bolts, and one end of the distribution hopper 202 is connected to the other end of the distribution hopper 202. A driving motor 204 is fixed at one end, a central shaft 205 is fixed at the output end of the driving motor 204, and the central shaft 205 and the material dividing hopper 202 are rotatably connected through a ball bearing, a material dividing roller 206 is fixed on the outside of the central shaft 205 and inside the material dividing hopper 202, a plurality of material storage grooves are provided inside the material dividing roller 206, and a plurality of material storage grooves are annularly arrayed inside the material dividing roller 206, and the material storing hopper 201 and the material storing grooves as well as the material discharging hopper 203 and the material storing grooves are adapted to each other, a first limiting plate 207 and a second limiting plate 208 are respectively arranged at both ends of the material storing groove, and the first limiting plate 207 is located at an end close to the driving motor 204, and the second limiting plate 208 is located at an end away from the driving motor 204, and also includes:

[0048] A plurality of adjusting parts 210, the plurality of adjusting parts 210 are annularly distributed at one end of the material distribution roller 206 away from the driving motor 204, and the plurality of adjusting parts 210 are adapted one by one to the plurality of material storage grooves, the adjusting part 210 comprises an adjusting plate 211, the adjusting plate 211 is slidably connected to the outer side of the material distribution roller 206, a plurality of sealing elements are assembled between the adjusting plate 211 and the material distribution hopper 202, the adjusting plate 211 and the material distribution roller 206, and the material distribution hopper 202 and the material distribution roller 206, a first baffle 212 and a second baffle 213 are respectively arranged at both ends of the adjusting plate 211, the first baffle 212 is located at the end away from the driving motor 204, the second baffle 213 is located at the end close to the driving motor 204, and the second baffle 213 is located inside the material storage groove;

[0049] Among them, after the batching module 200 is running, the adjustment plate 211 moves relative to the position of the dividing roller 206. When the second baffle plate 213 and the second limiting plate 208 are in contact with each other, the material storage groove is a semi-closed space. At this time, the volume of the material storage groove is the largest; when the second baffle plate 213 and the first limiting plate 207 are in contact with each other, the material storage groove is a closed space. At this time, the volume of the material storage groove is 0. In the initial state, the second baffle plate 213 and the first limiting plate 207 are in contact with each other, and the material storage groove is a closed space. In the initial state, the material storage groove is a closed space.

[0050] It should be noted that the adjusting part 210 and the control cabinet 101 are electrically connected via wires, and the control cabinet 101 can control the multiple adjusting parts 210 to operate independently, thereby achieving the purpose of adjusting the volume of a single material storage groove.

[0051] Here, the driving motor 204 is preferably a servo motor. The servo motor is an existing mature application with the characteristics of high precision and fast response. The selection of the servo motor can accurately control the rotation angle of the dividing roller 206, thereby facilitating accurate control of the amount of additive added.

[0052] Furthermore, the cross-sectional shape of the dividing roller 206 is circular, the cross-sectional shapes of the first limiting plate 207, the second limiting plate 208 and the adjusting plate 211 are all fan-shaped, and the radii of the dividing roller 206, the first limiting plate 207 and the adjusting plate 211 are all equal.

[0053] Specifically, a recycled plastic particle processing device is used in conjunction with the device. The recycled plastic particle processing device is provided with a feeding port, and the feeding port and the discharge hopper 203 are connected through a feeding component.

[0054] In this embodiment, an auxiliary agent is added to the storage hopper 201, and processing information such as a preset amount of the auxiliary agent added is set through the control cabinet 101. The process data (the process data includes but is not limited to: the number of rotations of the dividing roller 206, the number of times each storage groove is put in, and the volume adjustment value of each storage groove) is calculated and obtained through the processing unit. According to the process data, the adjustment unit 210 is started through the control cabinet 101, so that the adjustment plate 211 moves relative to the dividing roller 206, so that the storage groove is transformed from a closed space to a semi-enclosed space. Through the cooperation of the adjustment plate 211 and the dividing roller 206, the volume of each storage groove is adjusted, so that the preset amount of the auxiliary agent added is an integer multiple of the volume of the storage groove, thereby avoiding the problem of a fixed volume dividing groove in the existing equipment. The phenomenon that the last amount of additives added is deviated due to the groove not being filled up, thereby avoiding the phenomenon that the actual amount of additives added is inconsistent with the preset amount of addition, and avoiding the situation that the product performance deviates. After the number of additions of any storage groove is reached, the adjustment part 210 corresponding to the storage groove is reversed to make the adjustment plate 211 in the adjustment part 210 move toward the direction close to the first limit plate 207. When the adjustment plate 211 and the first limit plate 207 are fitted together, the semi-enclosed space of the storage groove is transformed into a closed space. At this time, the remaining additives in the storage hopper 201 cannot enter the storage groove, thereby avoiding the phenomenon that after the total amount of additives added reaches the preset value, the additives in the storage groove that carry the additives and have not been rotated to the lower end are difficult to take out.

[0055] In a specific embodiment, see Fig.12As shown, the number of material storage grooves inside the material distribution roller 206 is 10, and the multiple material storage grooves are numbered A, B, ..., J in the order of adding the auxiliary agents. The maximum volume of each material storage groove is 0.25L, and the maximum amount of addition of the material distribution roller 206 in one rotation is 2.5L. If the total amount of a certain auxiliary agent added is 3.1 liters, it can be calculated through the processing unit that the material distribution roller 206 cannot add all the auxiliary agents in one rotation, and then the number of rotations of the material distribution roller 206 is set to two, and a total of 20 times of addition, each material storage groove The single amount of additive added to the groove is 0.155L. The position of the adjustment plate 211 is adjusted according to the above data, so that the volume of each storage groove is 0.155L, and the number of times the additive is added to each storage groove is twice. After the two additions are completed, the adjustment part 210 is reversed to make the adjustment plate 211 and the first limit plate 207 fit again, so that the corresponding storage groove is transformed from a semi-enclosed space to a closed space, and the remaining additive in the storage hopper 201 cannot enter the interior of the storage groove again.

[0056] In a specific embodiment, please refer to Fig.12 As shown, the number of material storage grooves inside the material distribution roller 206 is 10, and the multiple material storage grooves are numbered A, B, ..., J in the order of adding the auxiliary agent. The maximum volume of each material storage groove is 0.25L, and the maximum amount of material added by the material distribution roller 206 during one rotation is 2.5L. If the total amount of a certain auxiliary agent added is 3.5L, it can be calculated by the processing unit that 1L needs to be added after the material distribution roller 206 rotates one circle. Among them, the material storage grooves A, B, C and D are A total of two times of additives need to be added. After the additives are added once from the storage grooves E to the storage grooves J, the corresponding linear stepper motor 214 is started and the corresponding adjustment plate 211 is driven to move, so that the volume inside the storage grooves E to the storage grooves J is 0 (that is, after the additives are added once from the storage grooves E to the storage grooves J, the additives in the storage hopper 201 cannot enter into the storage grooves E to the storage grooves J), thereby avoiding the problem that the storage grooves carrying the additives are difficult to clean after the total amount of additives added reaches the preset value.

[0057] In another specific embodiment, when the second baffle plate 213 and the second limiting plate 208 are in contact with each other, the material storage groove is a semi-enclosed space. At this time, the distance between the first limiting plate 207 and the second baffle plate 213 in the extension direction of the central shaft 205 is the largest, and is recorded as L1, and the volume of the corresponding material storage groove is also the maximum value. When the volume of the material storage groove needs to be adjusted to 0.155L, the distance between the second baffle plate 213 and the first limiting plate 207 is adjusted to 0.62L1. Specifically, due to the storage The cross-sectional shape of the material storage groove and the second baffle 213 is the same, and 0.155L occupies 62% of the maximum volume value of the material storage groove (calculated as follows: 0.155 / 0.25*frame 100%=62%). When the volume of the material storage groove changes, since both the cross-sectional shape and the cross-sectional size change, only the distance between the first limit plate 207 and the second baffle 213 changes, and then the volume value of the material storage groove can be quickly obtained according to the distance between the first limit plate 207 and the second baffle 213.

[0058] In another specific embodiment, the device also dispenses the additive by weight. When the density of the additive is a fixed value, the volume of the storage groove is adjusted, and additives of different weights can be dispensed by calculation. The calculation formula is as follows: Among them, v represents the volume of the storage groove, m represents the weight of the auxiliary agent added to the storage groove at a time, and ρ represents the density of the auxiliary agent. Specifically, if the total weight of the auxiliary agent added is 1000g, the amount added to each of the 10 storage grooves is 100g, and the volume of each storage groove can be calculated based on the density of the auxiliary agent.

[0059] Next, please refer to Figure 8 and Fig. 9 As shown, the adjustment part 210 also includes a linear stepper motor 214 and a distance sensor 215. The linear stepper motor 214 is fixed at one end of the second limit plate 208. A screw rod 216 is arranged inside the linear stepper motor 214, and both ends of the screw rod 216 are fixedly connected to the adjustment plate 211. The distance sensor 215 is fixed inside the first baffle 212, and the linear stepper motor 214 and the control cabinet 101 as well as the distance sensor 215 and the control cabinet 101 are electrically connected. A guide groove 209 is provided at one end of the second limit plate 208 close to the adjustment plate 211, a slider 217 is fixed inside the adjustment plate 211, and the guide groove 209 and the slider 217 are matched, and the adjustment plate 211 and the dividing roller 206 are slidably connected through the cooperation of the guide groove 209 and the slider 217.

[0060] In this embodiment, when the volume of the material storage groove needs to be adjusted, the linear stepper motor 214 is started to make the linear stepper motor 214 run, and the linear stepper motor 214 drives the screw rod 216 to move. Through the fixed connection between the screw rod 216 and the adjustment plate 211, the screw rod 216 drives the adjustment plate 211 to move, and the adjustment plate 211 is guided by the cooperation of the guide groove 209 and the slider 217, and the distance between the second baffle plate 213 and the first limit plate 207 is adjusted, so as to adjust the volume of the material storage groove. At the same time, the movement of the adjustment plate 211 is monitored by the distance sensor 215. When the volume of the material storage groove is equal to the volume adjustment value, the linear stepper motor 214 can be turned off.

[0061] Next, please refer to Figure 8 and Fig. 9 As shown, a plurality of cleaning slots are opened inside the second baffle 213 , a nozzle 218 is fixed inside the cleaning slot, an extension tube 219 is fixed to the output end of the nozzle 218 , and the end of the extension tube 219 away from the nozzle 218 passes through the interior of the first baffle 212 .

[0062] Furthermore, the material of the extension tube 219 can be any one of the following materials: PVC, aluminum, stainless steel or other hard materials that will not deform in a natural state.

[0063] It should be noted that a delivery pump module is also used in conjunction with the device. The output end of the delivery pump is connected to the extension tube 219. The delivery pump stores cleaning agent inside. After the delivery pump is running, it can deliver the cleaning agent to the extension tube 219.

[0064] In this embodiment, when the recycled modified plastic particles are processed and the additives remaining on the inner wall of the storage groove need to be cleaned, the linear stepper motor 214 is started to move the adjustment plate 211 away from the first limit plate 207, so that the storage groove is transformed from a closed space to a semi-closed space, and the delivery pump module is started to make the cleaning agent inside it flow to the extension tube 219 and spray to the inner wall of the storage groove through the nozzle 218 to clean the inner wall of the storage groove, so as to avoid the additives remaining on the side walls of the storage groove, thereby preventing the residual additives from chemically reacting with the replaced additives, thereby causing deviations in product performance.

[0065] It should be noted that, in order to ensure that the cleaning agent after cleaning flows out of the device, before cleaning, it is necessary to release the pipeline connection between the discharge hopper 203 and the recycled plastic particle processing equipment, and place a waste liquid collection element (such as a liquid storage barrel, a liquid storage box, etc.) at the lower end of the discharge hopper 203 to ensure that the cleaning agent can flow directly from the bottom of the discharge hopper 203 to the waste liquid collection element; at the same time, in order to ensure that the waste liquid after cleaning can flow into the waste liquid collection element, it is necessary to start the drive motor 204 during the cleaning process, and drive the distribution roller 206 to rotate through the drive motor 204 to ensure that all storage concave The waste liquid inside the groove can all flow into the waste liquid collecting element. At the same time, after cleaning is completed, it is necessary to drive the motor 204 to drive the dividing roller 206 to continue rotating for a period of time. Specifically, when cleaning is completed, the delivery pump stops delivering the cleaning agent to the extension tube 219. During the cleaning process, the closing plate 220 is driven by the sprayed cleaning agent, and the dividing roller 206 needs to continue to rotate. At this time, the closing plate 220 on the storage groove at the upper end rotates under the action of gravity, thereby causing the closing plate 220 to rotate again to the inside of the cleaning groove hole, and the nozzle 218 is covered again by the closing plate 220.

[0066] Please refer again Figures 8 to 10 As shown, a closing plate 220 is rotatably connected to one end of the cleaning slot near the first limiting plate 207, and the closing plate 220 and the nozzle 218 are adapted to each other. In the initial state, the closing plate 220 is completely located inside the cleaning slot, and the closing plate 220 can cover the nozzle 218.

[0067] In this embodiment, the setting of the closing plate 220 can cover the nozzle 218, thereby preventing the additive inside the material storage groove from entering the nozzle 218 and causing the nozzle 218 to be blocked. After the additive enters the nozzle 218, it will also cause a deviation in the amount of additive dosage, thereby causing a deviation in product performance. At the same time, when flushing the inner wall of the material storage groove, the cleaning agent sprayed from the nozzle 218 will push the closing plate 220 to rotate, thereby releasing the covering of the nozzle 218 by the closing plate 220, so that the closing plate 220 will not block the nozzle 218 during the cleaning process.

[0068] Please refer again Fig.10 and Fig.11 As shown, a pin rod 221 is provided on the closing plate 220 , and the closing plate 220 and the cleaning slot are rotatably connected via the pin rod 221 , and the pin rod 221 is located at one end close to the central shaft 205 .

[0069] In this embodiment, centrifugal force is generated during the rotation of the dividing roller 206. If the pin rod 221 is located at the end away from the central shaft 205, the closing plate 220 is affected by the centrifugal force during the rotation of the dividing roller 206, and may accidentally rotate and release the cover on the nozzle 218, thereby causing the additive to enter the nozzle 218. When the pin rod 221 is located at the end close to the central shaft 205, the rotation of the closing plate 220 due to the centrifugal force can be avoided during the rotation of the dividing roller 206, so that the closing plate 220 can always cover the nozzle 218 during the process of adding the additive.

[0070] Please refer again Fig.10 and Fig.11 As shown, a magnetic element 222 is fixed to one end of the closing plate 220 close to the cleaning slot.

[0071] Furthermore, the magnetic element 222 is preferably a neodymium magnet.

[0072] In this embodiment, the provision of the magnetic element 222 can increase the adsorption force of the closing plate 220 inside the cleaning slot hole, thereby preventing the closing plate 220 from rotating and releasing the cover on the nozzle 218 during the rotation of the dividing roller 206, causing the additive to enter the nozzle 218.

[0073] Please refer again Figure 3 and Figure 7 As shown, a conductive slip ring 223 is fixed to one end of the outer side of the central shaft 205 away from the driving motor 204, and the control cabinet 101 and the second baffle 213 are electrically connected through the conductive slip ring 223, and a gas-liquid slip ring 224 is fixed to one end of the outer side of the central shaft 205 and located at one end of the adjustment part 210, and the gas-liquid slip ring 224 and the extension tube 219 are connected through a pipeline.

[0074] In this embodiment, the conductive slip ring 223 and the gas-liquid slip ring 224 are both existing mature applications. Through the cooperation of the conductive slip ring 223 and the gas-liquid slip ring 224, during the rotation of the material distribution roller 206, they can stably provide power to the linear stepper motor 214 and can also deliver cleaning agent to the nozzle 218, so that the device can operate stably.

[0075] Specifically, the conductive slip ring 223 at least includes a first stator and a first rotor, the first stator is fixed to the outer side of the central shaft 205, the first stator can rotate synchronously with the central shaft 205, the first rotor is rotationally connected to the outer side of the first stator, and the linear stepper motor 214 and the first stator as well as the control cabinet 101 and the first rotor are electrically connected through wires; the gas-liquid slip ring 224 at least includes a second stator and a second rotor, the second stator is fixed to the outer side of the central shaft 205, the second stator can also rotate synchronously with the central shaft 205, the second rotor is rotationally connected to the outer side of the second stator, and the second stator and the extension tube 219 as well as the second rotor and the output end of the delivery pump module are connected through pipelines.

[0076] The working principle of the present invention is:

[0077] The additive is added into the storage hopper 201, and the processing information such as the preset additive amount is set through the control cabinet 101. The processing unit calculates and obtains the process data such as the number of rotations of the distribution roller 206, the number of times each storage groove is put in, and the volume adjustment value of each storage groove. According to the process data, the linear stepper motor 214 is started through the control cabinet 101, and the linear stepper motor 214 drives the adjustment plate 211 to move, so that the storage groove is transformed from a closed space to a semi-enclosed space. Through the cooperation of the adjustment plate 211 and the distribution roller 206, the volume of each storage groove is adjusted so that the preset additive amount is adjusted. The added amount is an integer multiple of the volume of the storage groove. The drive motor 204 is started, and the drive motor 204 drives the distribution roller 206 to rotate. During the rotation of the distribution roller 206, the additive inside the storage hopper 201 falls into the storage groove and rotates with the storage groove. When the storage groove with the additive stored inside rotates to the lower end, the additive inside the storage groove falls into the discharge hopper 203 and finally enters the recycled plastic particle processing equipment. When the number of times any storage groove is put in is reached, the linear stepper motor 214 corresponding to the storage groove is reversed to make the adjustment plate 214 corresponding to the storage groove 11 moves in the direction close to the first limit plate 207. When the adjustment plate 211 and the first limit plate 207 are fitted together, the semi-enclosed space of the storage groove is transformed into a closed space. At this time, the remaining additives in the storage hopper 201 cannot enter the storage groove, which avoids the phenomenon that after the total amount of additives added reaches the preset value, the additives in the storage groove that carry the additives and have not rotated to the lower end are difficult to take out. When the recycled plastic particles are processed and the inner wall of the storage groove needs to be cleaned, the connection between the discharge hopper 203 and the recycled plastic particle processing equipment is released, and the waste liquid collection element is placed in the discharge hopper. At the lower end of 203, the linear stepper motor 214 is started, and the adjustment plate 211 is driven to move by the linear stepper motor 214, so that all the storage grooves are transformed from closed spaces to semi-closed spaces, and the delivery pump module is started to deliver the cleaning agent to the inside of the extension tube 219 and spray it onto the inner wall of the storage groove through the nozzle 218 to clean the additives remaining on the inner wall of the storage groove. At the same time, the drive motor 204 is started, and the drive motor 204 drives the dividing roller 206 to rotate, so that the waste liquid inside the storage groove flows to the inside of the waste liquid collecting element, thereby preventing the additives from remaining on the side walls of the storage groove.

[0078] The above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified and limited.

Claims

1. A micro-dosing device for processing recycled modified plastic particles, characterized in that: comprising a frame (100), the frame A control cabinet (101) is fixed at one end of the frame (100), and a plurality of batching modules (200) are assembled inside the frame (100). The batching modules (200) include a storage hopper (201), a distribution hopper (202), and a discharge hopper (203) which are arranged in sequence from top to bottom. The storage hopper (201) and the distribution hopper (202) as well as the distribution hopper (202) and the discharge hopper (203) are all fixedly connected. A drive motor (204) is fixed at one end of the distribution hopper (202). The drive motor (204) is A central shaft (205) is fixed at the output end, and the central shaft (205) is rotatably connected to the material distribution hopper (202), a material distribution roller (206) is fixed outside the central shaft (205) and inside the material distribution hopper (202), a plurality of material storage grooves are provided inside the material distribution roller (206), and the material storage hopper (201) and the material storage grooves as well as the material discharge hopper (203) and the material storage grooves are mutually adapted, and a first limit plate (207) and a second limit plate (208) are respectively provided at both ends of the material storage grooves, and further comprising: A plurality of adjustment parts (210), each of the plurality of adjustment parts (210) being mounted on an end of the material distribution roller (206) away from the driving motor (204), and the plurality of adjustment parts (210) being matched one by one with the plurality of material storage grooves, the adjustment part (210) comprising an adjustment plate (211), the adjustment plate (211) being slidably connected to the outside of the material distribution roller (206), a first baffle plate (212) and a second baffle plate (213) being respectively arranged at both ends of the adjustment plate (211), and the second baffle plate (213) being located inside the material storage groove; Wherein, after the batching module (200) is in operation, the adjustment plate (211) moves relative to the position of the material distribution roller (206), and when the second baffle plate (213) and the second limit plate (208) are in contact with each other, the material storage groove is a semi-enclosed space; when the second baffle plate (213) and the first limit plate (207) are in contact with each other, the material storage groove is a closed space; in the initial state, the material storage groove is a closed space; The adjustment portion (210) further comprises a linear stepping motor (214) and a distance sensor (215); the linear stepping motor (214) is fixed to one end of the second limit plate (208); a lead screw (216) is provided inside the linear stepping motor (214), and the lead screw (216) and the adjustment plate (211) are fixedly connected; the distance sensor (215) is fixed inside the first baffle (212); and the linear stepping motor (214) and the control cabinet (101) as well as the distance sensor (215) and the control cabinet (101) are all electrically connected; The control cabinet (101) can control the multiple adjustment parts (210) to operate independently, so as to adjust the volume of a single material storage groove. When the number of times of delivery of any material storage groove is reached, the adjustment part (210) corresponding to the material storage groove is operated in reverse, so that the adjustment plate (211) in the adjustment part (210) moves in a direction close to the first limit plate (207). When the adjustment plate (211) and the first limit plate (207) are in contact with each other, the material storage groove is transformed from a semi-enclosed space to a closed space.

2. The micro-dosing device for processing recycled modified plastic particles according to claim 1, characterized in that: A guide groove (209) is provided at one end of the second limiting plate (208) close to the adjustment plate (211), a sliding block (217) is fixed inside the adjustment plate (211), and the guide groove (209) and the sliding block (217) are matched.

3. The micro-dosing device for processing recycled modified plastic particles according to claim 1, characterized in that: A plurality of cleaning slots are provided inside the second baffle (213), a nozzle (218) is fixed inside the cleaning slot, an extension tube (219) is fixed to the output end of the nozzle (218), and an end of the extension tube (219) away from the nozzle (218) passes through the interior of the first baffle (212), and the extension tube (219) is made of a hard material.

4. The micro-dosing device for processing recycled modified plastic particles according to claim 3, characterized in that: A closing plate (220) is rotatably connected to one end of the cleaning slot hole near the first limiting plate (207), and the closing plate (220) and the nozzle (218) are adapted to each other. In an initial state, the closing plate (220) is completely located inside the cleaning slot hole.

5. The micro-dosing device for processing recycled and modified plastic particles according to claim 4, characterized in that: The closing plate (220) is provided with a pin rod (221), the closing plate (220) and the cleaning slot hole are rotatably connected via the pin rod (221), and the pin rod (221) is located at one end close to the central shaft (205).

6. The micro-dosing device for processing recycled modified plastic particles according to claim 4, characterized in that: A magnetic element (222) is fixed to one end of the closing plate (220) close to the cleaning slot hole.

7. The micro-dosing device for processing recycled and modified plastic particles according to claim 1, characterized in that: Place A conductive slip ring (223) is fixed to the outer end of the central shaft (205) away from the drive motor (204), and the control cabinet (101) and the second baffle (213) are electrically connected via a conductive slip ring (223).

8. The micro-dosing device for processing recycled and modified plastic particles according to claim 1, characterized in that: A gas-liquid slip ring (224) is fixed to one end of the outer side of the central shaft (205) and located at one end of the adjustment portion (210), and the gas-liquid slip ring (224) and the extension tube (219) are connected via a pipeline.

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