A blowing assembly, a blowing assembly adjustment method and a sorting machine

Abstract

The present disclosure relates to the technical field of material sorting, and particularly relates to a blowing assembly, a blowing assembly adjusting method and a sorting machine. The blowing assembly comprises: a nozzle for blowing gas outward; an air passage in communication with the nozzle, for conveying gas to the nozzle, the air passage is provided with a first opening and a second opening on the side thereof; a first electromagnetic valve in communication with the end of the air passage away from the nozzle, for controlling the gas entering the air passage; a sensor in communication with the first opening, for detecting the airflow state in the air passage, judging the abnormal state of the blowing assembly, the abnormal state at least includes one of the following: air passage blockage, first electromagnetic valve gas leakage; a blocking device slidingly installed in the second opening, for changing the length of the blocking device extending into the air passage according to the abnormal state determined by the sensor. Through the present disclosure, automatic maintenance can be realized in time and efficiently, effectively avoiding the situations of shutdown, wrong sorting and missed sorting caused by the abnormal state of the blowing assembly, and improving the accuracy and efficiency of material sorting.

Description

Technical Field

[0001] This invention relates to the field of material sorting technology, specifically to a jetting assembly, a jetting assembly adjustment method, and a sorting machine. Background Technology

[0002] Coal, spodumene, and silica are widely used in current industrial production. However, these ores typically contain large amounts of gangue and impurities after mining, requiring sorting to differentiate between different types of ore to improve quality, reduce transportation costs, and minimize environmental pollution. Currently, sorting machines and other equipment are used to separate ores of different categories or grades. Sorting machines generally employ a jet-blowing assembly, which blows gas through different types of ores, agitating them and separating them. However, jet-blowing assemblies are prone to malfunction, such as nozzle or air passage blockage by impurities or air leaks. When this happens, it can lead to incorrect material sorting, resulting in low sorting accuracy. Furthermore, repeated shutdowns for repairs when the jet-blowing assembly malfunctions can reduce the machine's operating and maintenance efficiency. Summary of the Invention

[0003] To overcome the problems existing in the related art, an exemplary embodiment of this disclosure provides a blowing assembly in the first aspect, comprising: a nozzle for blowing gas outward; an air passage communicating with the nozzle for supplying gas to the nozzle, wherein a first opening and a second opening are provided on the periphery of the air passage; a first solenoid valve communicating with the end of the air passage away from the nozzle for controlling gas entering the air passage; a sensor communicating with the first opening for detecting the airflow state in the air passage to determine an abnormal state of the blowing assembly, wherein the abnormal state includes at least one of the following: air passage blockage, first solenoid valve leakage; and a blocking device slidably installed in the second opening for changing the length of the blocking device extending into the air passage according to the abnormal state determined by the sensor.

[0004] In some embodiments, multiple nozzles are provided, and multiple air passages are provided, each corresponding to one of the nozzles. The blowing assembly further includes a second solenoid valve, which is connected to at least one of the air passages, and is used to control gas to enter the air passage corresponding to the leaking first solenoid valve when the abnormal state is that the first solenoid valve is leaking.

[0005] In some embodiments, the air passage includes: an air passage communicating with the nozzle; a first branch air passage, one end of which is connected to a first solenoid valve and the other end of which is connected to the main air passage; a second branch air passage, one end of which is connected to a second solenoid valve and the other end of which is connected to the main air passage; wherein the blocking device is installed in the second opening of the first branch air passage.

[0006] In some embodiments, the first solenoid valve is connected to one of the first branch air channels; the second solenoid valve is connected to multiple second branch air channels, and each second branch air channel is provided with a switch for controlling the connectivity between the nozzle corresponding to each second branch air channel and the second solenoid valve.

[0007] In some embodiments, the airway is U-shaped, and the blocking device changes the flow rate of the gas ejected from the nozzle by changing the length of the airway it extends into.

[0008] In some embodiments, the blowing assembly further includes an air outlet valve disposed around the air passage and communicating with the air passage, for opening to release gas within the air passage.

[0009] Secondly, this disclosure also provides a method for adjusting a blow-jet assembly, applied to the blow-jet assembly as described in the first aspect. The method includes: detecting the airflow state of the air passage using the sensor; determining an abnormal state of the blow-jet assembly based on the airflow state, wherein the abnormal state includes at least one of the following: the nozzle is blocked, or the first solenoid valve is leaking; and adjusting the solenoid valve and / or the blocking device based on the abnormal state.

[0010] In some embodiments, determining the abnormal state of the blowing assembly based on the airflow state includes: determining the abnormal state as leakage of the first solenoid valve in response to airflow existing in the air passage when the nozzle is in a non-blowing state; and determining the abnormal state as nozzle blockage in response to airflow pressure being greater than or equal to a pressure threshold in the air passage when the nozzle is in a blowing state.

[0011] In some embodiments, adjusting the solenoid valve and / or the blocking device according to the abnormal state includes: closing the first solenoid valve in response to the abnormal state being air leakage in the first solenoid valve; and adjusting the blocking device in response to the abnormal state being nozzle blockage.

[0012] In some embodiments, the blowing assembly further includes: a second solenoid valve, which is in communication with at least one of the air passages; after closing the first solenoid valve in response to the abnormal state that the first solenoid valve is leaking, the step of adjusting the solenoid valve and / or the blocking device according to the abnormal state further includes: opening the second solenoid valve corresponding to the air passage in response to the sensor detecting that there is no airflow in the air passage.

[0013] In some embodiments, after closing the first solenoid valve in response to the abnormal state of leakage in the first solenoid valve, adjusting the solenoid valve and / or the blocking device according to the abnormal state further includes: adjusting the blocking device in response to the sensor detecting that airflow still exists in the airway, so that there is no airflow in the airway.

[0014] In some embodiments, the airway is U-shaped, and the blocking device changes the flow rate of the gas ejected from the nozzle by changing the length of its extension into the airway; the step of adjusting the blocking device to eliminate airflow in the airway in response to the sensor detecting that airflow still exists in the airway includes: reducing the length of the blocking device extending into the airway in response to the sensor detecting that airflow still exists in the airway.

[0015] In some embodiments, the first opening is located near the nozzle, and the second opening is located away from the nozzle; adjusting the solenoid valve and / or the blocking device according to the abnormal state further includes: adjusting the length of the blocking device extending into the airway according to the airflow state detected by the sensor, wherein the airflow state includes the air pressure in the airway.

[0016] In some embodiments, adjusting the blocking device in response to the abnormal state of nozzle blockage includes: increasing the length of the blocking device extending into the airway to increase the airflow velocity in response to the abnormal state of nozzle blockage; withdrawing the blocking device from the airway and returning to the step of detecting the airflow state of the airway through the sensor.

[0017] In some embodiments, the jetting assembly further includes an exhaust valve disposed around the air passage and communicating with the air passage, for opening to release gas within the air passage; after increasing the length of the blocking device extending into the air passage to increase the airflow velocity in response to the abnormal state of nozzle blockage, the adjustment of the blocking device in response to the abnormal state of nozzle blockage further includes: in response to the abnormal state of nozzle blockage and the pressure within the air passage no longer changing, withdrawing the blocking device from the air passage and opening the exhaust valve to reduce the air pressure within the air passage; closing the exhaust valve and returning to the process of increasing the length of the blocking device extending into the air passage to increase the airflow velocity in response to the abnormal state of nozzle blockage.

[0018] In some embodiments, adjusting the solenoid valve and / or the blocking device according to the abnormal state further includes: determining a material sorting strategy, wherein the sorting strategy includes at least: ensuring the sorting accuracy of the sprayed material and ensuring the accuracy of the unsprayed material; in response to the sorting strategy ensuring the accuracy of the sprayed material, closing the first solenoid valve in response to the abnormal state of the first solenoid valve leaking air; and in response to the sorting strategy ensuring the accuracy of the unsprayed material and the abnormal state of the first solenoid valve leaking air, keeping the first solenoid valve continuously operating.

[0019] Thirdly, this disclosure also provides a sorting machine for sorting materials, the sorting machine comprising: a transmission system for conveying the materials; an image acquisition unit for acquiring an image of the materials conveyed by the transmission system; an identification unit for determining the category of the materials based on the image of the materials; and a sorting unit comprising one or more spraying assemblies as described in the first aspect for sorting the materials based on the category of the materials determined by the identification unit.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0021] The jetting assembly provided in this disclosure can detect the airflow state within the air duct using sensors, thereby determining the abnormal state of the jetting assembly. This allows for timely identification of the assembly's operating status, facilitating prompt maintenance and adjustment, thus improving operational safety. Adjusting the jetting assembly according to abnormal states enables timely maintenance, avoiding repeated downtime for repairs and effectively improving maintenance efficiency. Furthermore, the jetting assembly provided in this disclosure enables timely and efficient automatic maintenance, effectively preventing downtime, incorrect sorting, and missed sorting due to abnormal states, thereby improving the accuracy and efficiency of material sorting. Attached Figure Description

[0022] The invention can be better understood by describing exemplary embodiments of the invention in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of a jetting assembly structure provided in an exemplary embodiment of the present disclosure;

[0024] Figure 2 This is a partial structural diagram of a jetting assembly provided in an exemplary embodiment of the present disclosure;

[0025] Figure 3 This is a partial structural diagram of a jetting assembly provided in an exemplary embodiment of the present disclosure;

[0026] Figure 4 This is a schematic diagram of a jetting assembly structure provided in an exemplary embodiment of the present disclosure;

[0027] Figure 5 This is a schematic diagram of a jetting assembly structure provided in an exemplary embodiment of the present disclosure;

[0028] Figure 6 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0029] Figure 7 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0030] Figure 8 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0031] Figure 9 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0032] Figure 10 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0033] Figure 11Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0034] Figure 12 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0035] Figure 13 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0036] Figure 14 Flowchart of a jet assembly adjustment method provided as an exemplary embodiment of this disclosure;

[0037] Figure 15 A flowchart illustrating a jet assembly adjustment method provided for an exemplary embodiment of this disclosure.

[0038] Figure label:

[0039] 110. Nozzle; 120. Air passage; 121. First opening; 122. Second opening; 123. Main air passage; 124. First branch air passage; 125. Second branch air passage; 126. Branch air passage; 130. First solenoid valve; 140. Sensor; 150. Blocking device; 160. Second solenoid valve. Detailed Implementation

[0040] The following describes specific embodiments of the present invention. It should be noted that, in order to provide a concise description, this specification cannot exhaustively describe all features of the actual embodiments. It should be understood that, in the actual implementation of any embodiment, just as in any engineering or design project, various specific decisions are often made to achieve the developer's specific goals and to meet system-related or business-related constraints, and this can change from one embodiment to another. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this invention, some design, manufacturing, or production modifications based on the technical content disclosed herein are merely conventional technical means and should not be construed as insufficient content of this disclosure.

[0041] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in the patent application description and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the element or object preceding "comprising" or "including" encompasses the element or object listed following "comprising" or "including" and its equivalents, and do not exclude other elements or objects. The terms "connected" or "linked" and similar terms are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0042] An exemplary embodiment of this disclosure provides a blowing assembly, such as Figure 1 As shown, it may include: nozzle 110, air passage 120, first solenoid valve 130, sensor 140 and blocking device 150.

[0043] Nozzle 110 is used to blow gas outward. The nozzle 110 of the blowing assembly can be used to blow gas outward, so that the gas blows the material, and the material is affected by the gas blown out of the nozzle 110, changing its movement trajectory, thereby realizing the separation and sorting of different types of materials.

[0044] The air passage 120, connected to the nozzle 110, is used to deliver gas to the nozzle 110, such as... Figures 1 to 3As shown, the air passage 120 has a first opening 121 and a second opening 122 on its periphery. The air passage 120 of the blowing assembly can connect the nozzle 110 and the first solenoid valve 130. When the first solenoid valve 130 is open, gas can enter the air passage 120 through the first solenoid valve 130, causing the airflow to flow along the extension direction of the air passage 120 and finally flow to the nozzle 110, from which it is blown out to the outside of the blowing assembly, thereby realizing the blowing and sorting of materials. The air passage 120 can have a first opening 121 on its periphery. The first opening 121 can be used to communicate with the sensor 140 so that the sensor 140 can detect the airflow state of the gas in the air passage 120. The first opening 121 can be a small hole, and the connection between the first opening and the sensor is tight with good sealing, so that gas cannot leak out of the air passage through the first opening 121. The air passage 120 may also have a second opening 122 on its periphery. The second opening 122 can be used to install the blocking device 150, so as to adjust the gas flow area of ​​the air passage 120 on the cross section where the second opening 122 is located, thereby adjusting the relevant parameters of the airflow state within the air passage 120, such as gas flow rate, gas pressure, and gas velocity. The size of the second opening 122 can match the blocking device 150, so that the fit between the second opening 122 and the blocking device 150 is tight, preventing gas leakage and providing good sealing. The first opening 121 and the second opening 122 can be staggered to avoid interference between the sensor 140 and the blocking device 150, which would affect the operation and adjustment of the jetting assembly.

[0045] First solenoid valve 130, such as Figure 1 As shown, the end of the air passage 120 furthest from the nozzle 110 is connected to control the gas entering the air passage 120. The first solenoid valve 130 can be connected to a gas source and can also be connected to the end of the air passage 120 furthest from the nozzle 110, allowing the first solenoid valve 130 to control the gas entering the air passage 120 through its opening and closing actions. When the first solenoid valve 130 is open, gas can flow into the air passage 120 through it, allowing the gas to flow along the air passage 120 to the nozzle 110 and be ejected. The blowing assembly performs a blowing operation on the material, and the ejected gas can blow the material away, changing its movement trajectory and achieving the separation and sorting of different types of materials. When the first solenoid valve 130 is closed, gas cannot pass through it, there is no gas flow in the air passage 120, no gas is blown out of the nozzle 110, and the blowing assembly does not perform a blowing operation on the material, causing the material to move along its original movement trajectory.

[0046] Sensor 140, such as Figure 2As shown, a sensor 140 is connected to the first opening 121 and is used to detect the airflow state within the air passage 120 to determine the abnormal state of the blowing assembly. The abnormal state includes at least one of the following: blockage of the air passage 120 or leakage of the first solenoid valve 130. The sensor 140 can be disposed on the outer periphery of the air passage 120 and is connected to the first opening 121. By detecting the airflow flowing through the first opening 121, the sensor 140 can determine the airflow state within the air passage 120, thereby further determining whether the blowing assembly is malfunctioning and its abnormal state. Specifically, when the blowing assembly is performing a blowing operation, the sensor 140 can detect the air pressure within the air passage 120. If the air pressure remains stable and within a preset range, it can be determined that the blowing assembly is in normal operating condition. If the current air pressure fluctuates significantly or exceeds the preset range, it can be determined that the blowing assembly is in an abnormal state of blockage in the air passage 120. Furthermore, even when the blowing assembly is not performing a sorting operation, the sensor 140 can detect whether there is airflow in the air passage 120. If there is no airflow, it can be determined that the blowing assembly is in normal operating condition. If the sensor 140 still detects airflow in the air passage 120 when the blowing assembly is not performing a sorting operation, it can be determined that the blowing assembly is in an abnormal state where the first solenoid valve 130 is leaking. Specifically, the leaking state of the first solenoid valve 130 means that gas leaks at the first solenoid valve 130 when the material does not need to be blown, causing gas to pass through the first solenoid valve 130 and enter the air passage 120.

[0047] Blocking device 150, such as Figure 3As shown, a slidable device 150 is installed in the second opening 122 to change the length of the blocking device 150 extending into the airway 120 according to the abnormal state determined by the sensor 140. The blocking device 150 can be installed inside the second opening 122 and can be slidably installed in the second opening 122. The installation of the blocking device 150 and the second opening 122 has good airtightness, and the gas in the airway 120 cannot escape from the connection between the second opening 122 and the blocking device 150. The blocking device 150 can be a piston installed in the second opening 122. The blocking device 150 can slide in the second opening 122. By changing the length of the blocking device 150 extending into the airway 120, the cross-sectional area of ​​the airway 120 at the location of the blocking device 150 can be changed, thereby changing the airflow state passing through this cross-section, such as changing the airflow velocity or pressure. The blocking device 150 can change its length extending into the air passage 120 according to the abnormal state determined by the sensor 140, thereby changing the airflow state and adjusting the spray assembly in an abnormal state. This allows the spray assembly to return to normal operation, effectively improving the adjustment efficiency and sorting accuracy of the spray assembly. Specifically, when the sensor 140 determines that the spray assembly is in an abnormal state of leakage in the first solenoid valve 130, the blocking device 150 can be extended into the air passage 120, with its tip abutting against the inner wall of the air passage 120, thus sealing the air passage 120. Since the leakage of the first solenoid valve 130 allows airflow to pass through the air passage 120, sealing the air passage 120 with the blocking device 150 can block the airflow, preventing airflow from passing through the air passage 120 and being blown out by the nozzle 110, which would lead to incorrect sorting of materials. Furthermore, by extending the blocking device 150 into the air passage 120 and adjusting its length within the passage, the distance between the blocking device 150 and the inner wall of the air passage 120 corresponding to its top can be changed. This alters the cross-sectional area of ​​the air passage 120 at the location of the blocking device 150, thus changing the gas flow cross-sectional area at that point and consequently altering the gas pressure and velocity. When the sensor 140 determines that the blowing assembly is in an abnormal state of nozzle 110 blockage, the length of the blocking device 150 extending into the air passage 120 can be increased, reducing the cross-sectional area of ​​the air passage 120 at the location of the blocking device 150. This increases the airflow velocity after passing through this cross-section, allowing the gas to blow out impurities blocking the nozzle 110, thereby clearing the blockage. This process is simple and highly efficient, enabling the blowing assembly to quickly recover and effectively improving its adjustment efficiency, allowing it to rapidly return to normal operation.

[0048] The blowing assembly provided according to the exemplary embodiments of this disclosure can achieve precise blowing and sorting of materials, and enables the blowing assembly to perform autonomous detection and state adjustment, effectively improving the reliability and sorting accuracy of the blowing assembly. By coordinating the nozzle 110, air passage 120, first solenoid valve 130, sensor 140, and blocking device 150, the blowing assembly, while performing basic sorting functions, has the ability to judge abnormal states and self-adjust faults. The sensor 140 is connected to the first opening 121 on the side wall of the air passage 120, enabling real-time monitoring of the air pressure or airflow state within the air passage 120, accurately determining whether the blowing assembly is in an abnormal state, such as blockage of the air passage 120 or leakage of the first solenoid valve 130, allowing the equipment to respond promptly and preventing continuous interference with the sorting results from abnormal states. When the sensor 140 detects that the blowing assembly is in an abnormal state, the blocking device 150 can automatically or passively adjust its length extending into the air passage 120 according to the abnormal state, achieving adjustment of the flow state of the air passage 120 with high adjustment efficiency. When a leak is detected in the solenoid valve, the blocking device 150 can completely seal the air passage 120, preventing ineffective airflow from blowing materials and causing incorrect sorting. When the nozzle 110 becomes clogged, the blocking device 150 can reduce the cross-sectional area of ​​the flow channel, increase the airflow pressure and velocity, and efficiently clear the blockage in the nozzle 110, achieving automatic unblocking. The spray assembly provided in this embodiment not only achieves efficient and stable spray sorting function, but also realizes self-adjustment of the spray assembly in abnormal states through the sensor 140 and the blocking device 150, avoiding repeated shutdowns for adjustment, effectively improving the adjustment efficiency and sorting efficiency of the spray assembly, and has high operational stability, thereby further improving the sorting accuracy and sorting efficiency of the sorting machine during the sorting process.

[0049] In some embodiments, such as Figure 4As shown, multiple nozzles 110 and multiple air passages 120 can be provided, each corresponding to one nozzle 110. The jetting assembly may further include a second solenoid valve 160, which is connected to at least one air passage 120. In the event of an abnormal condition where the first solenoid valve 130 leaks, the second solenoid valve 160 controls the gas to enter the air passage 120 corresponding to the leaking first solenoid valve 130. The jetting assembly may include multiple nozzles 110 arranged in parallel, each nozzle 110 being connected to one air passage 120, allowing each nozzle 110 to be supplied with gas through its own independent air passage 120. The air passage 120 is controlled by the corresponding first solenoid valve 130. The jetting assembly may also include a second solenoid valve 160, which can be activated when the first solenoid valve 130 leaks, causing the jetting assembly to malfunction. This allows the second solenoid valve 160 to control the gas to enter the air passage 120 corresponding to the leaking first solenoid valve 130. The second solenoid valve 160 can be configured in a one-to-one correspondence with the first solenoid valve 130, connecting the second solenoid valve 160 to the corresponding air passage 120. If the first solenoid valve 130 leaks, the leaking gas can be blocked by the blocking device 150, preventing it from flowing to the nozzle 110. When the first solenoid valve 130 leaks, the second solenoid valve 160 can be activated, controlling the gas flow into the air passage 120. This ensures the entire spray assembly maintains normal operation even when the first solenoid valve 130 is malfunctioning, allowing continuous spraying operations with high sorting accuracy. Based on the type and size of the material being sorted by the spray assembly, the second solenoid valve 160 can be opened to allow airflow through it into the air passage 120, which is then blown out from the nozzle 110, altering the material's trajectory and achieving the spraying operation. The second solenoid valve 160 can be closed to prevent airflow from entering the air passage 120, and no gas will be blown out from the nozzle 110, allowing the material to move along its original trajectory. Specifically, when the sorting machine includes multiple blowing components, each blowing component can perform blowing operations independently. Only one second solenoid valve 160 can be provided, or fewer second solenoid valves 160 than the first solenoid valve 130 can be provided, with one second solenoid valve 160 connected to the air passages 120 of multiple blowing components respectively. If any first solenoid valve 130 of any blowing component leaks, the blocking device 150 can block the air passage 120 corresponding to the first solenoid valve 130, while simultaneously opening the second solenoid valve 160, allowing the second solenoid valve 160 to connect to the air passage 120 corresponding to the first solenoid valve 130 to control gas entry into the air passage 120. This effectively avoids incorrect sorting due to leakage from the first solenoid valve 130, improving the accuracy of material sorting.Meanwhile, by connecting the second solenoid valve 160 to the air passages 120 of multiple blowing components respectively, fewer second solenoid valves 160 can be set, effectively saving costs.

[0050] According to the blowing assembly provided in this embodiment, by setting a second solenoid valve 160, the normal operation of the blowing assembly can still be maintained even if the first solenoid valve 130 leaks, avoiding the blowing assembly from stopping due to a malfunction of the first solenoid valve 130. This significantly improves the reliability and continuity of the blowing assembly and its corresponding sorting machine. When the first solenoid valve 130 leaks, the system can seal the air passage 120 through the blocking device 150 to prevent the leakage from affecting the sorting results. At the same time, the second solenoid valve 160 corresponding to the first solenoid valve 130 is activated, allowing it to control the gas to enter the same air passage 120, thereby ensuring that a stable airflow can still be output at the nozzle 110, so that the blowing operation is not interrupted and the accuracy and efficiency of material sorting are improved. In addition, the second solenoid valve 160 can be configured in a one-to-one or one-to-many manner, flexibly set according to the sorting requirements and the arrangement of the blowing assembly. On the one hand, each first solenoid valve 130 can be equipped with an independent second solenoid valve 160 to achieve precise control; on the other hand, one second solenoid valve 160 can be simultaneously connected to multiple air passages 120, sharing a backup passage when any of the multiple first solenoid valves 130 leaks, thereby significantly reducing costs and improving the economy of the sorting machine while ensuring functionality. The blowing assembly provided in this embodiment enables continuous blowing control even in the event of an abnormality in the first solenoid valve 130, possessing adaptive fault-tolerant functionality. While maintaining the sorting accuracy of the sorting machine, it ensures continuous operation of the sorting machine, and simultaneously improves the maintenance convenience and operational reliability of the sorting machine and its blowing assembly.

[0051] In some embodiments, such as Figure 4 As shown, the airway 120 may include: a main airway 123, a first branch airway 124, and a second branch airway 125.

[0052] The main air duct 123 is connected to the nozzle 110. The main air duct 123 can connect to the first branch air duct 124, the second branch air duct 125, and the nozzle 110. Gas flowing out from the first branch air duct 124 or the second branch air duct 125 can enter the main air duct 123 and flow along the main air duct 123 to the nozzle 110. The gas can finally be blown out from the nozzle 110 to perform a blowing operation on the material, thereby realizing the sorting of the material.

[0053] The first branch air passage 124 is connected at one end to a first solenoid valve 130 and at the other end to the main air passage 123. One end of the first branch air passage 124 can be connected to the first solenoid valve 130. When the first solenoid valve 130 is open, airflow can pass through the first solenoid valve 130 and enter the first branch air passage 124. The airflow can flow along the extension direction of the first branch air passage 124 and enter the main air passage 123. The first branch air passage 124 may have a first opening 121 and a second opening 122, wherein the blocking device 150 can be installed in the second opening 122 of the first branch air passage 124. The airflow state at the first opening 121 of the first branch air passage 124 can be detected by the sensor 140, thereby determining whether the first solenoid valve 130 of the first branch air passage 124 is in an abnormal state based on the airflow state of the material determined at the first opening 121. When the first solenoid valve 130 is in an abnormal state of leakage, the first branch airway 124 can be closed by the blocking device 150 on the first branch airway 124 to prevent the gas introduced into the first branch airway 124 due to the leakage of the first solenoid valve 130 from entering the main airway 123 and being blown out by the nozzle 110.

[0054] The second air passage 125 is connected at one end to a second solenoid valve 160 and at the other end to the main air passage 123. One end of the second air passage 125 can be connected to the second solenoid valve 160. When the first solenoid valve 130 leaks, the blocking device 150 can close the first air passage 124, preventing gas from entering the main air passage 123 and thus avoiding incorrect sorting due to leakage from the first solenoid valve 130. Simultaneously, the second solenoid valve 160 can be opened, controlling the flow of gas into the second air passage 125. When the second solenoid valve 160 is open, airflow can pass through it and enter the second air passage 125. The airflow can then flow along the extension direction of the second air passage 125 and enter the main air passage 123.

[0055] According to the blowing assembly provided in this embodiment, by dividing the air passage 120 into a main air passage 123, a first branch air passage 124, and a second branch air passage 125, and connecting them respectively to the first solenoid valve 130 and the second solenoid valve 160, more flexible airflow control and fault-tolerant switching functions can be achieved, further improving the sorting reliability and intelligence of the blowing assembly. Specifically, the main air passage 123 serves as the channel for gas delivery to the nozzle 110, and is connected to the first branch air passage 124 and the second branch air passage 125, thereby enabling the following: During normal operation, the first solenoid valve 130 is opened, and gas flows into the main air passage 123 through the first branch air passage 124, and is then ejected from the nozzle 110 to perform a blowing operation on the material, realizing sorting control. This structure can ensure a clear blowing path, fast response, and stable airflow, meeting the requirements of high-precision sorting. When the first solenoid valve 130 experiences an abnormal condition such as air leakage, the sensor 140 can quickly identify the abnormality by detecting the airflow status in the first branch airway 124. Subsequently, it controls the blocking device 150 to close the first branch airway 124, preventing gas leakage into the main airway 123 and causing mis-sorting, effectively isolating the faulty branch. Simultaneously, the second solenoid valve 160 can be opened, allowing gas to enter the main airway 123 through the second branch airway 125, thereby maintaining the continuity of airflow at the nozzle 110. With the spray assembly provided in this embodiment, even if the first solenoid valve 130 or its airway malfunctions, the spray assembly can maintain normal operation, improving its operational reliability. Furthermore, the first branch airway 124 and the second branch airway 125 can be equipped with separate detection and control devices, enabling independent monitoring and switching control of each branch. This not only improves the fault tolerance of the spray assembly but also facilitates modular maintenance, making it suitable for sorting machines employing large-scale, multi-channel spray systems.

[0056] In some embodiments, a first solenoid valve 130 is connected to a first branch air passage 124; a second solenoid valve 160 is connected to multiple second branch air passages 125, and each second branch air passage 125 is provided with a switch to control the connectivity between the nozzle 110 corresponding to each second branch air passage 125 and the second solenoid valve 160. The first solenoid valve 130 can be configured in a one-to-one correspondence with the first branch air passage 124, so that each solenoid valve can independently control the airflow within the first branch air passage 124 of one air passage. A second solenoid valve 160 can be connected to multiple second branch air passages 125, and each second branch air passage 125 can be equipped with a switch. When the first solenoid valve 130 fails and the second solenoid valve 160 is open, the switch in the second branch air passage 125 can be opened, connecting the second solenoid valve 160, the second branch air passage 125, and the main air passage 123. This allows the gas flowing in and out of the second solenoid valve 160 to pass through the second branch air passage 125, enter the main air passage 123, and finally be blown out through the nozzle 110. When the first solenoid valve 130 is in normal working condition and has not failed, the switch in the second branch air passage 125 can be closed. Since the second solenoid valve 160 can serve as a backup device in case the first solenoid valve 130 fails, one second solenoid valve 160 can be connected to multiple second branch air passages 125, allowing the second solenoid valve 160 to simultaneously connect to multiple air passages corresponding to different nozzles 110. When the first solenoid valve 130 is in normal working condition and no malfunction occurs, the second solenoid valve 160 can be in the closed state, and the switch in the second branch air passage 125 can be closed. If any of the first solenoid valves 130 malfunctions, the switch in the second branch air passage 125 corresponding to that first solenoid valve 130 can open, allowing the second solenoid valve 160 to take over the operation of the malfunctioning first solenoid valve 130, preventing shutdown of the blowing assembly or missed sorting. However, connecting each second branch air passage to a different second solenoid valve 160 would be costly and require a large space, affecting the installation and operation of the blowing assembly and its sorting machine. The blowing assembly provided in this embodiment allows one second solenoid valve 160 to be connected to multiple second branch air passages 125, effectively saving costs and installation space.

[0057] According to the jetting assembly provided in this embodiment, by ensuring a one-to-one correspondence between the first solenoid valve 130 and the corresponding first branch airway 124, each airway can be guaranteed to have independent airflow control capability. When the first solenoid valve 130 fails, the second solenoid valve 160 can be quickly switched on and connected through the connected second branch airway 125 and its switch, realizing rapid takeover control of the airflow of the nozzle 110, avoiding jetting interruption due to the failure of the first solenoid valve 130, and ensuring the continuity and stability of the sorting process. The switch on the second branch airway 125 can remain closed under normal operating conditions to avoid airflow interference; under fault conditions, it can be quickly opened to connect to the backup airway, realizing dynamic switching of the air source path of the nozzle 110, improving the response speed and operational continuity of the equipment under abnormal conditions. By connecting multiple second branch airways 125 to one second solenoid valve 160, the space occupied by multiple second solenoid valves 160 can be avoided, thus avoiding affecting the nozzle 110 arrangement density or equipment installation layout, while effectively saving costs.

[0058] In some embodiments, such as Figure 5 As shown, the air passage 120 is U-shaped. The blocking device 150 changes the flow rate of the gas ejected from the nozzle 110 by altering the length of its extension into the air passage 120. The air passage 120 can be U-shaped, allowing it to include two branch air passages with their beginning and end connected. One side of the air passage 120 can communicate with the nozzle 110, enabling the airflow within the air passage 120 to be guided along the air passage 120 to the nozzle 110 and then blown outward from the nozzle 110. A second opening 122 can be provided on one branch air passage 126 of the U-shaped air passage, and the blocking device 150 can be installed on the second opening 122. When the jet assembly is in an abnormal state, the flow rate of the gas ejected from the nozzle 110 can be changed by adjusting the length of the blocking device 150 extending into the air passage 120, thereby adjusting the jet assembly and returning it from an abnormal state to a normal operating state. Specifically, when the blowing assembly is in normal operation, the blocking device 150 on one of the branch air passages 126 of the return air passage can extend into the branch air passage 126. When the blowing assembly performs the blowing operation, the gas can flow in the other branch air passage with a higher flow rate and gas pressure. When the blowing assembly is in an abnormal state where the first solenoid valve 130 is leaking—specifically, when the first solenoid valve 130 is leaking (i.e., when the material does not need to be blown), gas leakage occurs at the first solenoid valve 130, causing gas to pass through the first solenoid valve 130 and enter the air passage 120. The length of the blocking device 150 extending into the branch air passage 126 can be adjusted so that the airflow can flow along the branch air passage, and some gas can flow back along the return air passage 120 to the other branch air passage, thereby creating greater resistance to the airflow in this branch air passage, making it difficult for the airflow to flow along the branch air passage to the nozzle 110 for blowing out. Specifically, as... Figure 5As shown, the airflow enters the air passage through the first solenoid valve 130, and can first enter a branch air passage, allowing the gas to flow along the passage to the nozzle 110 and be blown out. When the blowing assembly is in an abnormal state, such as when the first solenoid valve 130 leaks, the length of the blocking device 150 extending into the branch air passage 126 can be adjusted, allowing the airflow to enter the branch air passage 126 and flow along it. Since the end of the branch air passage 126 can be bent towards the first solenoid valve 130, the gas can flow back along the branch air passage 126 to another branch air passage, and the direction of the backflowing gas flow is opposite to the direction of the airflow in the other branch air passage, thereby generating greater resistance to the airflow in the branch air passage, making it difficult for the airflow to flow to the nozzle 110 and be blown out. Therefore, in the abnormal state of leakage of the first solenoid valve 130, the gas can be effectively prevented from being blown out of the nozzle 110 through the return air passage and its corresponding blocking device 150, thereby reducing the amount of gas blown out or preventing the gas from being blown out of the nozzle 110, thus realizing the control of the airflow in the air passage 120 and avoiding the situation of incorrect sorting caused by gas being blown out of the nozzle 110 due to leakage of the first solenoid valve 130.

[0059] According to the blowing assembly provided in this embodiment, by designing the air passage 120 as a loop structure and setting an adjustable blocking device 150 on one of the branch air passages 120, precise control of the gas flow rate at the nozzle 110 can be achieved. This allows for rapid adjustment when the blowing assembly malfunctions, resulting in high adjustment efficiency and further improving the operational stability, blowing accuracy, and blowing efficiency of the blowing assembly. Under normal operating conditions, the blocking device 150 fully extends into one branch air passage 120 of the loop-shaped air passage 120, sealing the air path and guiding the gas to flow at high speed along another branch. This ensures that the blowing airflow at the nozzle 110 has a high flow rate and pressure, thereby achieving efficient material sorting. When the blowing assembly experiences malfunctions such as leakage from the first solenoid valve 130, the system can control the blocking device 150 to retract, partially releasing the closure of the branch air passage 120, allowing the airflow to form a return path between the two branch air passages 120. Because the return path increases the overall resistance to gas flow, the gas velocity and spray volume at nozzle 110 are significantly reduced, or even unable to be sprayed effectively. This suppresses the leakage of airflow, effectively avoiding the problems of incorrect spraying and material missorting caused by air leakage, and further improving the operational stability, response sensitivity and sorting accuracy of the sorting equipment.

[0060] In some embodiments, the blowing assembly may further include: an exhaust valve, disposed around the air passage 120 and communicating with the air passage 120, for opening to release gas within the air passage 120. The exhaust valve may communicate with the air passage 120, such that the exhaust valve is disposed around the air passage 120, avoiding contact with the first opening 121 and the second opening 122. During operation of the blowing assembly, the exhaust valve may remain closed to prevent gas from escaping from the air passage 120, thereby effectively preventing gas leakage from affecting the blowing accuracy of the blowing assembly. However, in the event of an abnormality in the blowing assembly, the exhaust valve may be selectively opened according to the abnormal state of the blowing assembly, allowing gas from the air passage 120 to flow out through the exhaust valve. Specifically, when the blowing assembly is in an abnormal state where the nozzle 110 is blocked, the first solenoid valve 130 can be opened first, and the blocking device 150 can be adjusted to increase the length of the blocking device 150 extending into the air passage 120, thereby reducing the area through which the airflow can pass and increasing the airflow velocity. This allows the gas to flow along the air passage 120 to the nozzle 110, and the increased gas velocity allows it to be blown outwards, causing impurities to be blown out of the nozzle 110 along with the gas, thus cleaning the blocked nozzle 110. However, if the length of the blocking device 150 extending into the air passage 120 is increased until the gas velocity in the air passage 120 reaches its maximum, and the nozzle 110 is still blocked by impurities, after a period of time, it can be considered that the air pressure in the air passage 120 has reached its maximum value, and the gas cannot pass through the first solenoid valve 130 to enter the air passage 120. In this case, the exhaust valve can be opened to allow the gas in the air passage 120 to flow out of the air passage 120, reducing the air pressure in the air passage 120 to the same as the external atmospheric pressure. The outlet valve can then be closed, and the first solenoid valve 130 can be reopened, increasing the length of the blocking device 150 extending into the air passage 120 until the gas flow rate within the air passage 120 reaches its maximum. This process can be repeated multiple times, gradually pushing the impurities clogging the nozzle 110 outwards with the airflow, ultimately clearing the nozzle 110.

[0061] According to the blowing assembly provided in this embodiment, an exhaust valve is added around the air passage 120. In abnormal conditions such as nozzle 110 blockage, the exhaust valve releases high-pressure gas from the air passage 120. Combined with the adjustment of the blocking device 150 and the solenoid valve, this effectively clears and regulates the pressure of the nozzle 110. As an auxiliary exhaust channel, the exhaust valve opens when the nozzle 110 is continuously blocked and the air pressure in the air passage 120 rises to a certain threshold. This releases the high-pressure gas trapped in the air passage 120. Through a cycle of intermittent release and repressurization, the airflow gains better propulsion, helping to repeatedly push impurities out of the nozzle 110, thereby improving the nozzle 110's self-clearing ability. When the blockage is severe and increasing the airflow speed alone cannot clear it, the exhaust valve prevents ineffective gas accumulation under continuous high pressure. Through repeated adjustments, the impurities in the nozzle 110 are gradually pushed out of the nozzle 110. In addition, the exhaust valve can also serve as a pressure relief port, preventing pipe rupture or component damage due to excessive internal pressure when the nozzle 110 is blocked and gas cannot be discharged, thereby improving the structural safety and service life of the blow-off assembly.

[0062] Based on the same inventive concept, such as Figure 6 As shown, this disclosure also provides a method for adjusting a blower assembly, which is applied to a blower assembly as described in any of the foregoing embodiments. The method for adjusting a blower assembly may include steps S210 to S230.

[0063] Step S210: Detect the airflow state of the airway using a sensor. Specifically, the sensor can detect whether gas is flowing through the first opening in the airway, or if gas is flowing through the first opening, detect the airflow velocity and pressure to determine the airflow state of the airway.

[0064] Step S220: Based on the airflow status, determine the abnormal state of the blowing assembly. The abnormal state includes at least one of the following: nozzle blockage or leakage of the first solenoid valve. Based on the airflow status detected by the sensor, it can be further determined whether the blowing assembly is abnormal and what specific abnormal state it is in. There can be various abnormal states, including nozzle blockage. In this abnormal state, impurities enter the nozzle, causing blockage, preventing gas from being blown out of the nozzle, or resulting in a small amount of gas being blown out, thus failing to achieve the blowing operation on the material and reducing the accuracy of material sorting. An abnormal state can also include leakage of the first solenoid valve. Under normal operating conditions, the first solenoid valve can be opened or closed according to information provided by the sorting machine, thereby enabling gas to be ejected from the nozzle for sorting, or allowing no gas to be ejected, causing the material to move along its original trajectory. When the blowing assembly is in an abnormal state due to leakage in the first solenoid valve, gas will be blown out from the nozzle regardless of whether a blowing operation is required. This causes the nozzle to perform a sorting operation on all materials, resulting in erroneous blowing by the blowing assembly and affecting the accuracy of material sorting. Step S220 allows the abnormal state of the blowing assembly to be determined based on the airflow state in the air passage, facilitating subsequent adjustments based on different abnormal states.

[0065] Step S230: Adjust the solenoid valve and / or the blocking device according to the abnormal state. The first solenoid valve can be adjusted to open or close based on the abnormal state of the blowing assembly, thus adjusting the abnormal state. Alternatively, the blocking device can be adjusted to achieve the same effect. Specifically, adjusting the length of the blocking device extending into the second opening changes the gas pressure and flow rate within the air passage, thereby adjusting the abnormal state of the blowing assembly. Adjusting the abnormal state according to step S230 is simple to operate, has a high response speed, and enables automated adjustment of the blowing assembly's abnormal state. The blowing assembly also exhibits good response efficiency, effectively improving the efficiency of adjustment, enhancing its reliability, and further improving the operational stability of the separator and the accuracy of material sorting.

[0066] According to the jetting assembly adjustment method provided in this embodiment, by detecting and analyzing the airflow state and combining it with the structure of the jetting assembly, it is possible to achieve automated, high-response-speed, and low-cost abnormal state diagnosis and adjustment processing, which can effectively improve the overall stability and sorting accuracy of the jetting assembly and the sorting machine. In step S210, the airflow state of the air passage can be detected in real time by a sensor, providing a data basis for subsequent abnormal judgment, which can quickly detect the abnormal state of the jetting assembly and process it in a timely manner, effectively improving adjustment efficiency. In step S220, the abnormal state of the jetting assembly can be identified by combining the data collected by the sensor, which can realize the fault self-check of the jetting assembly and has high detection accuracy. In step S230, the first solenoid valve or blocking device can be automatically adjusted according to the abnormal state, which can realize real-time control of each component of the jetting assembly, adapt to the adjustment needs of different abnormal states, and has the advantages of fast response speed and high control accuracy. The jetting component adjustment method provided in this embodiment can significantly improve the response speed and adaptability of the jetting component to abnormal conditions. While maintaining the long-term stable operation of the equipment, it can effectively avoid sorting errors caused by jetting component failure and further improve the overall performance of the sorting machine.

[0067] In some embodiments, such as Figure 7 As shown, step S220, determining the abnormal state of the blowing assembly based on the airflow state, may include steps S221 and S222.

[0068] Step S221: In response to the nozzle being in a non-blowing state and airflow existing in the air passage, the abnormal state is determined to be a leak in the first solenoid valve. When the nozzle is in a non-blowing state, the first solenoid valve should remain closed to prevent gas from flowing into the air passage through the first solenoid valve; therefore, there should be no airflow in the air passage. When the nozzle is in a blowing state, the first solenoid valve should be open, allowing airflow through the air passage. Therefore, when the nozzle is in a non-blowing state, the first solenoid valve should remain closed, and there should be no airflow in the air passage. However, when the nozzle is in a non-blowing state and airflow exists in the air passage, it can be determined that the first solenoid valve is abnormally open. Thus, it can be determined that the blowing assembly is malfunctioning, and the abnormal state is a leak in the first solenoid valve.

[0069] Step S222: In response to the nozzle being in the blowing state, if the airflow pressure in the air passage is greater than or equal to a pressure threshold, the abnormal state is determined to be nozzle blockage. When the nozzle is not in the blowing state, the first solenoid valve should remain closed to prevent gas from flowing into the air passage through the first solenoid valve. Therefore, there should be no airflow in the air passage, the air pressure in the air passage is low, and no gas is blown out of the nozzle. When the nozzle is in the blowing state, the first solenoid valve should be open, airflow can flow through the air passage, the air pressure remains relatively stable, and gas is blown out of the nozzle. Specifically, a pressure threshold can be preset for the airflow pressure in the air passage. When the airflow pressure detected by the sensor is less than the pressure threshold, it can be determined that the airflow flowing in the air passage can meet the material sorting requirements. When the airflow pressure in the air passage is greater than or equal to the pressure threshold, it can be determined that the airflow flowing in the air passage, after being blown out of the nozzle, cannot blow the material to change its movement trajectory, resulting in the inability to separate and sort the material. Therefore, when the nozzle is in the blowing state and there is no airflow in the air passage, or the airflow pressure in the air passage is greater than or equal to the air pressure threshold, it can be determined that the blowing component is abnormal and the abnormal state is nozzle blockage.

[0070] The jetting assembly adjustment method provided in this embodiment can accurately distinguish different abnormal states based on the relationship between the airflow state in the air duct and the current working state of the nozzle, effectively improving the automated adjustment efficiency of the jetting assembly and the overall operational reliability of the sorting system. According to this embodiment, the fault location can be quickly located using only airflow signals, improving the fault monitoring capability of the jetting assembly, significantly enhancing the accuracy and sensitivity of abnormal state identification, providing an effective decision-making basis for subsequent automatic adjustment, and exhibiting high reliability and low false judgment rate in judging abnormal states, thus significantly improving the operational stability of the jetting assembly and the accuracy of material sorting.

[0071] In some embodiments, such as Figure 8 As shown, step S230, adjusting the solenoid valve and / or the blocking device according to the abnormal state, may include steps S231 and S232.

[0072] Step S231: In response to the abnormal condition of air leakage in the first solenoid valve, the first solenoid valve is closed. When the abnormal condition is air leakage in the first solenoid valve, in order to ensure the accuracy of material sorting by the spray assembly and avoid incorrect sorting, the first solenoid valve can be actively closed, so that no airflow enters the air passage through the solenoid valve, and the spray assembly does not perform spraying operation, thereby avoiding continuous sorting errors. After the material sorting is completed, the sorting operation of the spray assembly can be paused, effectively avoiding incorrect sorting, and facilitating subsequent replacement and maintenance of the first solenoid valve.

[0073] Step S232: In response to the abnormal condition of nozzle blockage, adjust the blocking device. When the abnormal condition is nozzle blockage, in order to ensure the accuracy of material sorting by the blowing assembly and avoid missed sorting due to insufficient airflow pressure, the blocking device can be adjusted to extend into the air passage according to the abnormal condition of nozzle blockage. By changing the gas flow area at the interface of the air passage, the blowing assembly can effectively increase the gas velocity in the air passage. This allows the impurities blocking the nozzle to be pushed by the higher-velocity gas and blown out of the nozzle, thus clearing the nozzle.

[0074] According to the jetting component adjustment method provided in this embodiment, by precisely matching different abnormal states of the jetting component with corresponding adjustment operations, differentiated responses and dynamic recovery processing for abnormal situations such as air leakage of the first solenoid valve and nozzle blockage can be achieved, improving the fault self-adaptability and operational stability of the jetting component. Step S231 avoids incorrect sorting due to air leakage and allows for timely pausing of the jetting component's operation after the sorting task is completed, providing preparation time for subsequent manual maintenance or solenoid valve replacement, improving maintenance efficiency and reducing the overall system malfunction rate. Step S232 allows foreign objects blocking the nozzle to be blown out under high-pressure airflow, achieving a dynamic self-cleaning function for the nozzle. It offers faster response speed, does not require interruption of the jetting component and the overall sorting machine workflow, has a high level of automation, can be flexibly adjusted, and effectively improves response speed.

[0075] In some embodiments, the blowing assembly may further include: a second solenoid valve, in communication with at least one air passage. For example... Figure 9As shown, in step S231, after the first solenoid valve is closed in response to an abnormal condition of air leakage, step S230, adjusting the solenoid valve and / or the blocking device according to the abnormal condition, may further include: step S233, opening the second solenoid valve corresponding to the airway in response to the sensor detecting the absence of airflow in the airway. The abnormal condition may also include the first solenoid valve stopping operation. When the blowing assembly is in the blowing state, if the sensor detects the absence of airflow in the airway, it can be determined that the blowing assembly is in an abnormal state, and the abnormal state is that the first solenoid valve stops operation. Therefore, in response to the sensor detecting the absence of airflow in the airway, the second solenoid valve corresponding to the airway can be opened. By opening the second solenoid valve, the airflow is controlled to enter the airway and flow to the nozzle for blowing out, thereby realizing the blowing operation of the blowing assembly. When the sorting machine includes multiple blowing assemblies, each blowing assembly can independently perform the blowing operation. Only one second solenoid valve can be set, or fewer second solenoid valves can be set, so that one second solenoid valve is connected to the airway of multiple blowing assemblies respectively. When any sensor of the jetting component detects that there is no airflow in the air passage, the second solenoid valve can be opened, allowing the second solenoid valve to connect with the air passage to control the gas entering the air passage.

[0076] According to the jetting assembly adjustment method provided in this embodiment, by introducing a second solenoid valve outside the original first solenoid valve control path, airflow control of the jetting assembly under abnormal conditions is achieved, further enhancing the fault tolerance and operational stability of the jetting assembly. Sensors can detect the airflow status within the air passage in real time, automatically determining whether to activate the second solenoid valve. It possesses self-checking, self-switching, and self-recovery functions, exhibiting a high level of automation. By introducing the second solenoid valve, when the first solenoid valve malfunctions, the airflow path can be quickly switched and the jetting function restored, significantly improving the reliability and sorting accuracy of the jetting system, providing a strong guarantee for the continuous and stable operation of the material sorting machine.

[0077] In some embodiments, such as Figure 10As shown, in step S231, after closing the first solenoid valve in response to the abnormal condition of air leakage, step S230, adjusting the solenoid valve and / or the blocking device according to the abnormal condition, may further include: step S234, adjusting the blocking device to eliminate airflow in the airway in response to the sensor detecting that airflow still exists in the airway. In the abnormal condition of air leakage in the first solenoid valve, after closing the first solenoid valve, damage may prevent the valve from closing completely, causing gas to still escape through the first solenoid valve and enter the airway. Therefore, the sensor may still detect airflow in the airway. Thus, step S234 can be executed, adjusting the blocking device to eliminate airflow in the airway in response to the sensor detecting that airflow still exists in the airway. Therefore, the blocking device can be adjusted to increase its length extending into the airway until it can completely seal the airway, blocking the airflow and preventing it from flowing to the nozzle, thereby further blocking the airflow from the leaking first solenoid valve and preventing incorrect sorting.

[0078] According to the adjustment method of the blowing assembly provided in this embodiment, the depth of its insertion into the air passage can be adjusted based on sensor feedback to physically block abnormally leaking airflow and prevent it from continuing to be ejected from the nozzle. The blocking device can serve as a redundant safety mechanism for the first solenoid valve. Without disassembling and replacing the solenoid valve, it can temporarily close the air passage, effectively avoiding material mis-sorting caused by continuous jetting from the nozzle, and effectively improving the sorting accuracy and efficiency of the blowing assembly and the overall sorting machine.

[0079] In some embodiments, the airway is U-shaped, and the blocking device changes the flow rate of the gas ejected from the nozzle by altering the length of its extension into the airway. For example... Figure 11As shown, step S234, in response to the sensor detecting that airflow still exists in the airway, adjusts the blocking device to eliminate airflow in the airway, which may include: step S2341, in response to the sensor detecting that airflow still exists in the airway, reducing the length of the blocking device extending into the airway. Because the airway is U-shaped, it includes two branch airways connected end-to-end. Specifically, when the blowing assembly is in normal operation, the blocking device located on one branch airway of the U-shaped airway can extend into the branch airway, and the blocking device can fully extend into the branch airway, blocking that branch airway. At this time, the gas can flow along the other branch airway of the U-shaped airway and finally be blown out from the nozzle. Because one branch airway is blocked, when the blowing assembly performs the blowing operation, the gas flows in the other branch airway, with a higher flow velocity and gas pressure. When the jet assembly is in an abnormal state due to leakage in the first solenoid valve, the length of the blocking device extending into the branch air passage can be reduced. This allows the airflow to flow along the branch air passage, enabling some gas to flow to the nozzle and be blown outwards, while the other part of the gas can flow back along the loop air passage to another branch air passage. This creates greater resistance to the airflow in this branch air passage, making it difficult for the airflow to flow along the branch air passage to the nozzle for blowing out. Therefore, in the abnormal state of leakage in the first solenoid valve, gas can be effectively prevented from being blown out from the nozzle, reducing the gas jet volume or preventing gas from being blown out from the nozzle altogether. This achieves control over the airflow within the air passage and avoids incorrect sorting caused by gas being blown out from the nozzle due to leakage in the first solenoid valve.

[0080] According to the jetting assembly adjustment method provided in this embodiment, the gas flow can be adjusted by the blocking device through the return air duct and step S234, thereby improving the system's adaptability and operational stability under abnormal conditions. When the first solenoid valve cannot be completely closed, the gas flow rate in the return air duct is adjusted using the blocking device. This allows for rapid cutting off or reduction of the airflow output at the nozzle end without replacing the solenoid valve, improving the abnormal handling efficiency of the jetting assembly. Simultaneously, it effectively prevents accidental material spraying, thereby enhancing the accuracy and stability of the jetting assembly and the sorting machine.

[0081] In some embodiments, the first opening is located near the nozzle, and the second opening is located away from the nozzle. Specifically, based on the direction of gas flow in the airway, the gas flowing through the airway can first pass through the location of the second opening, then flow to the location of the first opening, and finally be blown out from the nozzle. Figure 12As shown, step S230, adjusting the solenoid valve and / or the blocking device according to the abnormal state, may further include: step S235, adjusting the length of the blocking device extending into the airway according to the airflow state detected by the sensor, wherein the airflow state includes the air pressure in the airway. By opening the first opening near the nozzle and the second opening away from the nozzle, the airflow can first flow through the second opening with the blocking device installed, then flow to the sensor, and finally be blown out from the nozzle during the blowing state of the blowing assembly. When the blowing assembly malfunctions, such as nozzle blockage, the length of the blocking device extending into the airway can be gradually increased according to the air pressure detected by the sensor. When the airflow passes through the location of the blocking device, the airway narrows, resulting in increased airflow velocity and increased air pressure. The airflow then flows along the airway to the sensor's detection position, where the sensor can detect changes in air pressure and velocity. When the sensor detects that the air pressure or velocity of the airflow does not meet the minimum flow rate or minimum air pressure required to clear the nozzle, the length of the blocking device extending into the air passage can be increased to further increase the air pressure and velocity. When the sensor detects that the air pressure or velocity of the airflow is greater than or equal to the minimum flow rate or minimum air pressure required to clear the nozzle, the blocking device can remain in its current position, opening the first solenoid valve and continuously blowing airflow to clear the air passage. When the sensor detects a change in air pressure or velocity, determining that the nozzle has been cleared, the length of the blocking device extending into the air passage can be reduced until the blocking device returns to its initial position or the sensor detects that the airflow state has returned to its initial value, completing the nozzle clearing process.

[0082] According to the adjustment method of the blowing assembly provided in this embodiment, by setting the second opening on the side away from the nozzle, the gas first enters the air passage through this opening, then flows through the sensor monitoring point and the first opening near the nozzle, and finally exits. This embodiment facilitates flow rate regulation via a blocking device in the initial stage of airflow entering the air passage, while ensuring that the sensor can accurately acquire the air pressure and flow rate near the nozzle in real time, thereby achieving precise control and judgment. In step S235, by detecting the airflow state in the air passage and dynamically adjusting the insertion length of the blocking device using the sensor, real-time closed-loop control can be achieved. In the abnormal state of nozzle blockage, the nozzle unblocking efficiency is improved. By monitoring the air pressure and flow rate in real time using the sensor, it is possible to effectively determine whether the airflow meets the minimum unblocking threshold. When the unblocking conditions are met, the first solenoid valve is opened to ensure that each blow has sufficient impact force, avoiding weak airflow that could lead to unblocking failure or ineffective operation, thereby enhancing the accuracy and response efficiency of the blowing assembly in response to abnormal states. After detecting that the nozzle has been successfully cleared, the blocking device can automatically retract to the initial position, realizing system self-recovery, ensuring continuous operation of the equipment without manual intervention, realizing intelligence and automation, avoiding the maintenance costs caused by frequent disassembly and cleaning, and contributing to the stability, continuity and reliability of the sorting equipment during long-term operation.

[0083] In some embodiments, such as Figure 13 As shown, step S232, in response to the abnormal state of nozzle blockage, adjusts the blocking device, which may include steps S2321 and S2322.

[0084] Step S2321: In response to the abnormal condition of nozzle blockage, increase the length of the blocking device extending into the air passage to increase the airflow velocity. When the abnormal condition is nozzle blockage, it is necessary to change the air pressure or velocity to blow out the impurities blocking the nozzle. Therefore, step S2321 can be executed to increase the length of the blocking device extending into the air passage, thereby reducing the cross-sectional area of ​​the air passage at the blocking device, reducing the flow area of ​​the airflow at this point, and thus rapidly increasing the airflow velocity. The airflow then blows out the impurities blocking the nozzle, thereby clearing the nozzle.

[0085] Step S2322 involves withdrawing the blocking device from the air passage and returning to the execution path via the sensor to detect the airflow status of the air passage. After clearing the nozzle, because the blocking device extends a considerable distance into the air passage, maintaining its current position could lead to excessive air pressure or velocity, affecting subsequent blowing operations and causing over-blowing and incorrect sorting. Therefore, the blocking device can be withdrawn from the air passage, restoring the cross-sectional area of ​​the air passage at the blocking device location and restoring the gas velocity and pressure within the air passage to their initial state. This ensures that the blowing assembly maintains high blowing accuracy after the nozzle is cleared. Subsequently, the execution path can return to the sensor to detect the airflow status of the air passage and continuously monitor the operating status of the blowing assembly.

[0086] According to the jet blowing assembly adjustment method provided in this embodiment, in step S2321, when the nozzle is blocked, the length of the blocking device extending into the air passage is increased, reducing the cross-sectional area of ​​the air passage and restricting gas flow. This creates a high-pressure gas area before the blocking position, which helps to quickly blow out foreign objects or impurities stuck or accumulated at the nozzle, achieving active unblocking of the nozzle. After the unblocking operation is completed, the blocking device is withdrawn from the air passage, restoring the cross-sectional area of ​​the air passage at the blocking device position to normal. This effectively reduces the airflow pressure and velocity, preventing the material from being mistakenly blown out or causing sorting deviations due to continuous high pressure, thereby improving the sorting accuracy of the jet blowing assembly after it returns to normal operating conditions. The jet blowing assembly adjustment method provided in this embodiment not only provides the blocking device with a high response speed but also allows for flexible insertion and withdrawal based on sensor feedback, improving the jet blowing system's ability to handle abnormal states such as blockages in real time, resulting in high processing efficiency.

[0087] In some embodiments, the jetting assembly further includes an exhaust valve disposed around the air passage and communicating with the air passage, for opening to release gas within the air passage. In step S2321, in response to an abnormal condition of nozzle blockage, the length of the blocking device extending into the air passage is increased to increase the airflow velocity, as... Figure 15 As shown, step S232, in response to the abnormal state of nozzle blockage, adjusts the blocking device, and may further include steps S2323 and S2324.

[0088] Step S2323: In response to the abnormal state of nozzle blockage and the pressure within the airway no longer changing, the blocking device is withdrawn from the airway, and the outlet valve is opened to reduce the air pressure within the airway. This increases the length of the blocking device extending into the airway, thereby reducing the area through which the airflow can pass and increasing the airflow velocity. This allows the gas to push the impurities blocking the nozzle outwards until they fall outside the nozzle, thus cleaning it. However, in some cases, especially when impurities completely block the nozzle, the blockage is more firmly embedded and difficult to blow out. Even after opening the first solenoid valve and increasing the length of the blocking device extending into the airway, the impurities still cannot be blown out of the nozzle, and the nozzle remains in the abnormal state of blockage. When the pressure within the airway no longer changes, it can be determined that the impurities have completely blocked the nozzle, preventing gas from flowing out of the airway, and the gas volume within the airway has reached its maximum, making it impossible for the airflow to continue pushing the impurities outwards. Therefore, step S2323 can be executed to remove the blocking device from the airway and open the air outlet valve to allow the gas in the airway to flow out, thereby reducing the air pressure in the airway. This will facilitate the subsequent delivery of gas into the airway through the first solenoid valve to push away impurities and clean the nozzle.

[0089] Step S2324: Close the outlet valve and return to the execution step. In response to the abnormal condition of nozzle blockage, increase the length of the blocking device extending into the air passage to increase the airflow velocity. After opening the outlet valve, the gas trapped in the air passage can flow outwards, and the air pressure in the air passage can return to atmospheric pressure. Subsequently, step S2324 can be executed to close the outlet valve and return to the execution step S2321 to continue adjusting the length of the blocking device extending into the air passage, increasing the length of the blocking device into the air passage, thereby increasing the gas flow velocity. The higher-velocity gas pushes the impurities outwards, gradually pushing them out of the nozzle, thus cleaning the nozzle. This process can be repeated multiple times to gradually move the impurities blocking the nozzle outwards, ultimately clearing the nozzle.

[0090] According to the jet assembly adjustment method provided in this embodiment, when the nozzle is completely blocked by impurities, preventing further gas flow, the sensor detects the pressure within the airway and intelligently determines that the gas volume has reached its limit. At this point, by removing the blocking device and opening the outlet valve, the blocked gas is effectively discharged, reducing the airway pressure and facilitating subsequent adjustment of the gas flow rate. Multiple cycles of this process improve the success rate of clearing stubborn blockages. The nozzle clearing steps provided in this embodiment are only executed under the specific condition of detecting nozzle blockage and preventing further airway pressure rise, ensuring that the jet assembly's jetting action maintains high precision even under non-abnormal conditions. The outlet valve and blocking device enable rapid adjustment and reset of the airway internal pressure, helping the jet assembly automatically return to normal operation when blockages or other abnormalities occur, avoiding manual adjustments, reducing equipment downtime, and improving system stability and continuity.

[0091] In some embodiments, such as Figure 14 As shown, step S230, adjusting the solenoid valve and / or the blocking device according to the abnormal state, may also include steps S236 to S238.

[0092] Step S236: Determine the material sorting strategy, wherein the sorting strategy includes at least: ensuring the sorting accuracy of the sprayed material and ensuring the accuracy of the un-sprayed material. The material sorting strategy can be determined; specifically, the sorter can use a binary sorting method, that is, only separating materials into two different categories, causing the spraying component to perform a spraying operation on materials belonging to one category, while not performing a spraying operation on materials belonging to the other category, thus separating materials belonging to different categories. When the spraying component is installed on the sorter, since the adjustment of the spraying component requires a certain amount of time, in order to improve the material sorting efficiency, the material sorting strategy can be determined first. The material sorting strategy can be: ensuring the sorting accuracy of the sprayed material and ensuring the accuracy of the un-sprayed material.

[0093] Step S237: In response to the sorting strategy of ensuring the accuracy of the sprayed material, the first solenoid valve is closed in response to the abnormal condition of air leakage. When the sorting strategy aims to ensure the accuracy of the sprayed material, it is necessary to ensure the accuracy of the sorting operation performed by the spraying assembly, that is, to ensure the accuracy of the gas sprayed by the nozzle, and to prevent the nozzle from performing spraying operation on materials that do not need to be sprayed. Therefore, when the abnormal condition of air leakage in the first solenoid valve occurs, the first solenoid valve can be closed in time to avoid mis-sorting caused by gas being blown out of the nozzle due to air leakage in the first solenoid valve.

[0094] Step S238: In response to the sorting strategy ensuring the accuracy of unsprayed materials, and given the abnormal condition of air leakage in the first solenoid valve, the first solenoid valve is kept running. When the sorting strategy ensures the accuracy of unsprayed materials, it requires that no materials requiring spraying are present in the unsprayed material set. Therefore, when the abnormal condition is air leakage in the first solenoid valve, the first solenoid valve can be kept running to ensure that no materials requiring spraying are present in the unsprayed material set, thereby improving the accuracy of the unsprayed materials.

[0095] According to the adjustment method of the blowing assembly provided in this embodiment, by introducing a sorting strategy decision mechanism, when the blowing assembly malfunctions, different processing paths are selected based on the current material sorting strategy, giving the blowing assembly greater operational and adjustment flexibility. When it is necessary to ensure the sorting accuracy of the blown material, to avoid mis-blowing of non-target materials due to air leakage from the solenoid valve, the first solenoid valve can be immediately closed to prevent abnormal blowing behavior, avoid mis-sorting of materials, and improve overall sorting accuracy. If the sorting strategy is to ensure the accuracy of materials not blown, even if there is a slight air leakage in the first solenoid valve, it can be maintained to ensure that materials are not missed or misclassified, thereby improving the reliability of material sorting.

[0096] Based on the same inventive concept, this disclosure also provides a sorting machine for sorting materials. The sorting machine includes: a transmission system, an image acquisition unit, an identification unit, and a sorting unit.

[0097] A transmission system is used to transport materials. The transmission system can be a conveyor belt for transporting materials, which can move with the movement of the conveyor belt. Finally, the materials can fall from one end of the conveyor belt, and the sorting unit performs a sorting operation on the falling materials.

[0098] An image acquisition unit is used to acquire images of the materials conveyed by the transmission system. The image acquisition unit may include a camera, which can be positioned above the conveyor belt to acquire real-time images of the materials being conveyed. These images may be color-sorted images containing information such as the material's color and shape. The image acquisition unit may also include a radiation emitter and a receiver. The radiation emitter emits radiation towards the materials being conveyed, and the receiver receives the radiation passing through the materials, thereby acquiring a radiation image of the materials. This radiation image may include information such as the material's shape and composition.

[0099] The identification unit is used to determine the category of materials based on images of the materials. The identification unit can recognize images acquired by the image acquisition unit and determine the category of each material based on information such as color and shape in the image.

[0100] The sorting unit includes one or more blowing assemblies as described in any of the foregoing embodiments, used to sort materials according to the material category determined by the identification unit. The sorting unit can achieve material sorting through blowing gas. The sorting unit may include one or more blowing assemblies, which are installed at the end of the conveyor belt of the transmission system. Each blowing assembly of the sorting unit can perform a sorting operation on the materials according to the material category determined by the identification unit, i.e., blowing the materials, thereby achieving separation and sorting of the materials. Each blowing assembly can execute the adjustment method provided in any of the foregoing embodiments during operation, thereby enabling timely self-checking and adjustment in case of a blowing assembly failure, preventing overall machine shutdown due to malfunction.

[0101] The sorting machine provided in this embodiment combines image acquisition, intelligent recognition, and a jet-blowing sorting component with fault self-diagnosis and adaptive adjustment capabilities, achieving a significant improvement in sorting efficiency, accuracy, and equipment reliability in terms of overall structure and functional synergy. By setting up a transmission system to continuously convey materials, an image acquisition unit to acquire images in real time, and a recognition unit to complete classification judgments, combined with the precise sorting operation of the jet-blowing component, a closed-loop, fully automated sorting process is formed, effectively reducing manual intervention and improving sorting capacity and operational efficiency. When the jet-blowing component malfunctions, such as a solenoid valve stopping or a nozzle becoming clogged, the system can detect abnormal airflow in the air passage through sensors and trigger the corresponding component self-adjustment mechanism to ensure that the material sorting operation is properly handled or skipped, effectively preventing local faults from interfering with the overall sorting process and improving the robustness and stability of the sorting machine system.

[0102] This application uses specific terms to describe embodiments of the application. Terms such as "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that references to "an embodiment," "one embodiment," or "an alternative embodiment" in different locations throughout this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0103] In the context of this application, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0104] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0105] The basic concepts have been described above. Obviously, for those skilled in the art, the above disclosure is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the embodiments of this application.

Claims

1. A jetting assembly, characterized in that, include: A nozzle is used to blow gas outwards; An air passage, connected to the nozzle, is used to deliver gas to the nozzle. A first opening and a second opening are provided on the periphery of the air passage. A first solenoid valve is connected to the end of the air passage away from the nozzle, and is used to control the gas entering the air passage; A sensor, connected to the first opening, is used to detect the airflow state in the air passage to determine the abnormal state of the blowing assembly, wherein the abnormal state includes at least one of the following: nozzle blockage or air leakage from the first solenoid valve. A blocking device is slidably installed in the second opening and is used to change the length of the blocking device extending into the airway according to the abnormal state determined by the sensor. If the abnormal state is that the nozzle is blocked, the length of the blocking device extending into the airway is increased to increase the airflow velocity. If the abnormal state is that the first solenoid valve is leaking, the blocking device is adjusted to prevent gas from being blown out from the nozzle. The nozzles are provided in multiple ways, and the air passages are provided in multiple ways, each corresponding to one of the nozzles. The jetting assembly also includes: A second solenoid valve, which is connected to at least one of the gas passages, is used to control gas to enter the gas passage corresponding to the leaking first solenoid valve when the abnormal state is that the first solenoid valve is leaking. The air passage is U-shaped. The blocking device changes the flow rate of the gas ejected from the nozzle by changing the length of its extension into the air passage. The air passage includes two branch air passages with their beginning and end connected to each other. A second opening is provided on one of the branch air passages, and the blocking device is installed on the second opening. The end of the branch air passage is bent towards the first solenoid valve. When there is no need to blow material, if a gas leak occurs at the first solenoid valve, the length of the blocking device extending into the branch air passage is adjusted so that the airflow flows along the branch air passage.

2. The jetting assembly according to claim 1, characterized in that, The airway includes: The main air passage is connected to the nozzle; The first branch airway is connected at one end to one of the first solenoid valves and at the other end to the main airway. The second airway is connected at one end to a second solenoid valve and at the other end to the main airway. The blocking device is installed in the second opening of the first bronchus.

3. The jetting assembly according to claim 2, characterized in that, The first solenoid valve is connected to one of the first branch air passages; The second solenoid valve is connected to multiple second branch air passages, and each second branch air passage is equipped with a switch to control the connectivity between the nozzle corresponding to each second branch air passage and the second solenoid valve.

4. The jetting assembly according to any one of claims 1-3, characterized in that, The jetting assembly also includes: An exhaust valve is located around the air passage and communicates with the air passage; it is used to open and release the gas inside the air passage.

5. A method for adjusting a jetting assembly, characterized in that, Applied to the jetting assembly as described in any one of claims 1-4, the jetting assembly adjustment method includes: The airflow status of the airway is detected by the sensor. Based on the airflow state, an abnormal state of the blowing assembly is determined, wherein the abnormal state includes at least one of the following: the nozzle is blocked, or the first solenoid valve is leaking. Adjust the solenoid valve and / or the blocking device according to the abnormal state.

6. The method for adjusting the jetting assembly according to claim 5, characterized in that, Determining the abnormal state of the jet assembly based on the airflow state includes: In response to the nozzle being in a non-blowing state and airflow existing in the air passage, the abnormal state is determined to be air leakage of the first solenoid valve. In response to the nozzle being in a blowing state, if the airflow pressure in the air passage is greater than or equal to a pressure threshold, the abnormal state is determined to be nozzle blockage.

7. The method for adjusting the jetting assembly according to claim 6, characterized in that, The step of adjusting the solenoid valve and / or the blocking device according to the abnormal state includes: In response to the abnormal condition that the first solenoid valve is leaking air, the first solenoid valve is closed. In response to the abnormal condition of nozzle blockage, the blocking device is adjusted.

8. The method for adjusting the jetting assembly according to claim 7, characterized in that, The blowing assembly further includes: a second solenoid valve, communicating with at least one of the air passages; after closing the first solenoid valve in response to the abnormal state of air leakage in the first solenoid valve, the adjustment of the solenoid valve and / or the blocking device according to the abnormal state further includes: In response to the sensor detecting that there is no airflow in the airway, the second solenoid valve corresponding to the airway is opened.

9. The method for adjusting the jetting assembly according to claim 7, characterized in that, After closing the first solenoid valve in response to the abnormal condition of air leakage in the first solenoid valve, the step of adjusting the solenoid valve and / or the blocking device according to the abnormal condition further includes: In response to the sensor detecting that airflow still exists in the airway, the blocking device is adjusted to eliminate airflow in the airway.

10. The method for adjusting the jetting assembly according to claim 9, characterized in that, The airway is U-shaped, and the blocking device changes the flow rate of the gas ejected from the nozzle by changing the length of its extension into the airway; the adjustment of the blocking device in response to the sensor detecting that airflow still exists in the airway, so that there is no airflow in the airway, includes: In response to the sensor detecting that airflow still exists in the airway, the length of the blocking device extending into the airway is reduced.

11. The method for adjusting the jetting assembly according to claim 7, characterized in that, The first opening is located near the nozzle, and the second opening is located away from the nozzle; the adjustment of the solenoid valve and / or the blocking device according to the abnormal state further includes: Based on the airflow state detected by the sensor in the airway, the length of the blocking device extending into the airway is adjusted, wherein the airflow state includes the air pressure in the airway.

12. The method for adjusting the jetting assembly according to claim 7, characterized in that, The response to the abnormal state of nozzle blockage, adjusting the blocking device, includes: In response to the abnormal condition of nozzle blockage, the length of the blocking device extending into the airway is increased to increase the airflow velocity; The blocking device is withdrawn from the airway, and the process returns to the step of detecting the airflow state of the airway through the sensor.

13. The method for adjusting the jetting assembly according to claim 12, characterized in that, The jetting assembly further includes an exhaust valve disposed around the air passage and communicating with the air passage, for opening to release gas within the air passage; after increasing the length of the blocking device extending into the air passage to increase the airflow velocity in response to the abnormal state of nozzle blockage, the adjustment of the blocking device in response to the abnormal state of nozzle blockage further includes: In response to the abnormal condition that the nozzle is blocked and the pressure in the airway no longer changes, the blocking device is withdrawn from the airway and the outlet valve is opened to reduce the air pressure in the airway. The outlet valve is closed, and the response to the abnormal state of nozzle blockage is resumed, increasing the length of the blocking device extending into the air passage to increase the airflow velocity.

14. The method for adjusting the jetting assembly according to claim 7, characterized in that, The step of adjusting the solenoid valve and / or the blocking device according to the abnormal state further includes: Determine a material sorting strategy, wherein the sorting strategy includes at least: ensuring the sorting accuracy of the material being sprayed, and ensuring the sorting accuracy of the material not being sprayed; In response to the sorting strategy to ensure the accuracy of the material being sprayed, the first solenoid valve is closed in response to the abnormal state of leakage in the first solenoid valve. In response to the sorting strategy, to ensure the accuracy of the material that has not been sprayed, and the abnormal state is that the first solenoid valve is leaking air, the first solenoid valve is kept running.

15. A sorting machine, characterized in that, For sorting materials, the sorting machine includes: A transmission system for conveying the material; An image acquisition unit is used to acquire images of the material conveyed by the transmission system; An identification unit is used to determine the category of the material based on an image of the material; The sorting unit includes one or more spraying components as described in any one of claims 1-4, for sorting the material according to the category of the material determined by the identification unit.

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