Air blowing path detection apparatus and material sorting system

Abstract

Disclosed in the present application are an air blowing path detection apparatus and a material sorting system. The air blowing path detection apparatus is used for detecting the operation condition of an air blowing path, and comprises a pressure measurement module, a transmission assembly and a driving module, wherein the driving module is connected to the transmission assembly, and the transmission assembly is connected to the pressure measurement module; the driving module is used for driving the transmission assembly, such that the transmission assembly drives the pressure measurement module to move relative to a nozzle, thereby making the pressure measurement module align with the nozzle; and the pressure measurement module is used for collecting air pressure data at the nozzle after the pressure measurement module aligns with the nozzle, wherein the air pressure data is used for determining the operation condition of an air blowing path. An external pressure measurement module is used to detect the operation condition of an air blowing path in any operation state, without invasively detaching the air blowing path, thereby improving the efficiency of operation condition detection for the air blowing path, and thus improving the material sorting efficiency.

Description

Injection gas path detection device and material sorting system Technical Field

[0001] The present disclosure generally relates to the field of material sorting, and more particularly to a blowing air path detection device and a material sorting system. Background Art

[0002] At present, intelligent material sorting machines use a blowing assembly composed of several array-arranged blowing air paths to sort materials. They are usually used in industrial production environments with a large number of dust sources, such as mines, grinding mills, and processing workshops. Among them, the nozzles on each blowing air path are exposed to the air to perform the blowing action. During the material sorting process, due to the poor air flow in the environment where the sorting machine is located, dust is retained, resulting in excessively high dust concentration in the air. Even if dust removal equipment is installed, dust from bottom to top can still enter the blowing air path through the nozzles of the blowing air path. Therefore, dust easily accumulates at the corners of the blowing air path, causing blockage failures, thereby reducing the efficiency and accuracy of material sorting.

[0003] To ensure efficient and accurate material sorting, existing technologies allow for manual or invasive testing to assess the operating conditions of the air injection circuit in advance while it is shut down, enabling timely resolution of blockages. It should be understood that "shutdown" of the air injection circuit refers to the state in which the material sorting system is shut down and not operating.

[0004] However, since the above-mentioned detection method is carried out when the blowing air circuit is shut down, the preparation time for material sorting is prolonged; and the efficiency and accuracy of the manual detection method are low, and the complexity of the invasive disassembly and assembly detection method is high, resulting in low efficiency of the working condition detection of the blowing air circuit; therefore, there are still problems of low efficiency and accuracy in material sorting. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a blowing air path detection device for improving the efficiency of the working condition detection of the blowing air path; it is also desired to provide a material sorting system including the above-mentioned blowing air path detection device, which has the effect of improving the efficiency and accuracy of material sorting.

[0006] In a first aspect of the present application, a blowing air path detection device is provided, which includes a pressure detection module, a transmission assembly, and a drive module; the drive module is connected to the transmission assembly, and the transmission assembly is connected to the pressure detection module;

[0007] The driving module is used to drive the transmission assembly to drive the pressure detection module to move relative to the nozzle so that the pressure detection module and the nozzle are aligned;

[0008] The pressure detection module is used to collect gas pressure data at the nozzle after the pressure detection module is aligned with the nozzle. The gas pressure data is used to determine the working condition of the injection gas path.

[0009] In the second aspect of the present application, a material sorting system is provided, which includes the blowing air path detection device and the blowing assembly in the above-mentioned first aspect; the blowing assembly includes a plurality of blowing air paths arranged in an array; the blowing assembly is aligned with the blowing air path detection device.

[0010] In a third aspect of the present application, a control method is provided, which is applied to the injection gas path detection device in the first aspect, the method comprising:

[0011] Controlling the driving module to drive the transmission assembly to move so that the transmission assembly drives the pressure detection module to align with the nozzle;

[0012] After the pressure detection module is aligned with the nozzle, the pressure detection module is controlled to collect gas pressure data at the nozzle;

[0013] The working condition of the injection gas path is determined according to a comparison result of a numerical value of an error between an actual response time and a calibrated response time of the gas pressure data and a preset threshold.

[0014] The blowing air path detection device and material sorting system provided in the embodiments of the present application can use the pressure detection module to collect the gas pressure data at the nozzle of the blowing air path when the material sorting system is working and the blowing air path is flowing with gas, and judge the working condition of the blowing air path based on the gas pressure data. Compared with the prior art of manual detection one by one when the blowing air path is shut down, the present application uses an external pressure detection module to realize the working condition detection of the blowing air path in any working state without shutting down or invasively disassembling the blowing air path, thereby improving the working condition detection efficiency of the blowing air path; in addition, it can timely process the dust accumulation of the blowing air path according to the working condition detection results, thereby improving the efficiency and accuracy of material sorting.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] FIG1 is an application scenario applicable to the embodiment of the present application;

[0018] FIG2 is a schematic diagram of a blow gas path detection device according to an embodiment of the present application;

[0019] FIG3 is a schematic diagram of a transmission assembly 202 according to an embodiment of the present application;

[0020] FIG4 is a schematic diagram of a pressure detection module 201 according to an embodiment of the present application;

[0021] FIG5 is a schematic diagram of the operation of a blowing air path detection device according to an embodiment of the present application;

[0022] FIG6 is a cross-sectional schematic diagram of a blowing air path according to an embodiment of the present application;

[0023] FIG7 is a schematic diagram of another pressure detection module 201 according to an embodiment of the present application;

[0024] FIG8 is a schematic diagram of a driving cylinder 402 according to an embodiment of the present application;

[0025] FIG9 is a schematic diagram of a driving module 203 according to an embodiment of the present application;

[0026] FIG10 is an operation flow chart of a processing module 1001 according to an embodiment of the present application;

[0027] FIG11 is a schematic structural diagram of a material sorting system according to an embodiment of the present application;

[0028] FIG12 is a control schematic diagram of a material sorting system according to an embodiment of the present application;

[0029] FIG13 is a schematic diagram of a calibration response curve of an injection gas circuit according to an embodiment of the present application;

[0030] FIG14 is a flow chart of a control method of a blow gas path detection device according to an embodiment of the present application;

[0031] FIG15 is a flow chart of another method for controlling a blown air path detection device according to an embodiment of the present application;

[0032] In the above figure: 10-air source equipment; 20-blowing assembly; 30-material sorting area; 40-blowing air path; 50-solenoid valve; 60-nozzle; 201-pressure detection module; 202-transmission assembly; 203-drive module; 301-slider; 302-track; 401-pressure sensor; 402-drive cylinder; 403-bearing assembly; 404-measuring assembly; 701-sliding assembly; 801-energy storage assembly; 802-pushing assembly; 901-drive motor; 1101-blowing air path detection device. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant invention and are not intended to limit the invention. It should also be noted that, for ease of description, only portions relevant to the invention are shown in the accompanying drawings.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] FIG1 is an application scenario applicable to an embodiment of the present application. Referring to FIG1 , the application scenario includes an air source device 10, a blowing assembly 20, and a material sorting area 30. The air source device 10 is used to transmit gas to the blowing assembly 20, and the blowing assembly 20 is used to use gas to blow the material to the material sorting area 30. Among them, the blowing assembly 20 may include a plurality of nozzles 60 arranged in a preset arrangement; for example, the arrangement of the plurality of nozzles 60 may be a single row, a double row, or multiple rows. Typically, each nozzle 60 is connected to a corresponding blowing air path 40 to achieve gas connectivity. In addition, the blowing assembly 20 also includes a solenoid valve 50 connected to each blowing air path 40, and the solenoid valve 50 is used to control whether the gas enters the blowing air path 40 and the timing of entering the blowing air path 40.

[0036] In a specific implementation, when the solenoid valve 50 is in the open state, the gas provided by the gas source device 10 can enter the spraying gas path 40 through the end of the solenoid valve 50 in the spraying assembly 20. The gas entering the spraying gas path 40 is sprayed by the nozzle 60, blowing the material into the corresponding material sorting area 30, thereby completing the material sorting process. The nozzle 60 is exposed to the air to perform the blowing action.

[0037] Currently, material sorting is performed using an intelligent material sorting machine including the aforementioned blowing assembly 20. During the actual material (e.g., ore) sorting process, since the nozzle 60 of the blowing assembly 20 is exposed to the air for a long period of time, dust, material debris, and the like in the air can easily enter the blowing air path 40 through the nozzle 60 when the blowing air path 40 is not flowing through the nozzle 60. This can easily lead to blockages within the blowing air path 40, especially at the corners of the air path, reducing the material sorting efficiency. Furthermore, the gas pressure at the nozzle 60 can also be affected by dust accumulation, thereby reducing the sorting accuracy.

[0038] In order to ensure the efficiency and accuracy of material sorting in the existing technology, manual inspection is usually used in the shutdown state to first determine the specific working conditions of the blowing air path, and then deal with each working condition accordingly; for example, the blowing force of the blowing air path with a minor blockage fault can be increased, or the blowing air path with a serious blockage fault can be repaired and replaced in time.

[0039] Specifically, while the blowing air circuit is in a shutdown state, the blowing air circuit is sequentially restored to a state of air flow, the airflow conditions of the blowing air circuit are confirmed one by one, and the working condition of the blowing air circuit is judged based on the airflow conditions. Alternatively, while the blowing air circuit is in a shutdown state, the inspection personnel can also use invasive inspection methods to determine whether there is any blockage in the blowing air circuit through intrusive inspection. For example, the components of the blowing assembly can be disassembled one by one and the blockage of each blowing air circuit can be manually confirmed.

[0040] However, the low efficiency and accuracy of manual inspections and the high complexity of invasive inspections result in low efficiency in inspecting the working conditions of the air injection circuit. Furthermore, both manual and invasive inspections are performed while the air injection circuit is shut down, severely impacting normal material sorting operations. Consequently, material sorting still suffers from low efficiency.

[0041] Based on this, according to the blowing air path detection device proposed in this application, the pressure detection module can be used to determine the specific working conditions of the blowing air path under any working state of the blowing air path, thereby improving the working condition detection efficiency and accuracy of the blowing air path, and then improving the material sorting efficiency and sorting accuracy.

[0042] FIG2 is a schematic diagram of a blower air path detection device provided in an embodiment of the present application, which can detect the operating condition of the blower air path 40. As shown in FIG2 , the blower air path detection device includes a pressure detection module 201, a transmission assembly 202, and a drive module 203; the drive module 203 is connected to the transmission assembly 202, which is connected to the pressure detection module 201.

[0043] Specifically, the driving module 203 is used to drive the transmission assembly 202 to drive the pressure detection module 201 to move relative to the nozzle, so that the pressure detection module 201 is aligned with the nozzle; the pressure detection module 201 is used to collect gas pressure data at the nozzle after the pressure detection module 201 is aligned with the nozzle, and the gas pressure data is used to determine the working condition of the blowing gas path.

[0044] Compared with the shutdown detection of the blowing air circuit in the prior art, the embodiment of the present application can use the pressure detection module 201 to collect the gas pressure at the nozzle of the blowing air circuit under any working state of the blowing air circuit, and determine the specific working condition of the blowing air circuit in real time based on the gas pressure data, thereby improving the working condition detection efficiency of the blowing air circuit without the need for shutdown.

[0045] In a possible implementation, the pressure detection module 201 may include a pressure sensor, a driving cylinder for driving the pressure sensor to move, and a supporting assembly for supporting the pressure sensor.

[0046] Exemplarily, the pressure sensor is composed of a pressure sensitive element and a signal processing unit. Specifically, the pressure sensor can use the pressure sensitive element to obtain a pressure signal, and use the signal processing unit to convert the obtained pressure signal into an electrical signal.

[0047] It should be noted that as a device widely used in industrial practice, pressure sensors can be classified according to the pressure test type in different application scenarios, such as gauge pressure sensors, differential pressure sensors, and absolute pressure sensors.

[0048] For example, the driving cylinder can be a cylindrical metal part that guides the piston to perform linear reciprocating motion inside the cylinder. Specifically, the linear reciprocating motion of the piston inside the cylinder can compress the gas inside the cylinder, thereby converting the pressure energy of the compressed gas into mechanical energy.

[0049] It should be noted that the cylinder is composed of a cylinder barrel, end cover, piston, piston rod and seals, and its types can include two types: reciprocating linear motion and reciprocating swinging motion. For example, it can be a single-acting cylinder, double-acting cylinder, diaphragm cylinder, impact cylinder and rodless cylinder, etc.

[0050] Illustratively, the bearing assembly may be a fixing plate for fixing the pressure sensor and the driving cylinder, and the fixing plate may be fixedly connected to the transmission assembly 202 .

[0051] For example, when the pressure sensors on the carrier assembly correspond to the nozzles one-to-one, it can be determined that the pressure detection module is aligned with the nozzles.

[0052] In one possible implementation, Figure 3 is a schematic diagram of a transmission assembly 202 provided in an embodiment of the present application. As shown in Figure 3, the transmission assembly 202 can be a linear guide comprising a slider 301 and a track 302 for the slider to slide. The support assembly of the pressure detection module 201 can be fixedly connected to the slider 301, thereby enabling the linear guide to drive the pressure detection module 201 to perform linear motion.

[0053] For example, the transmission assembly 202 may also employ a lead screw, such as a sliding lead screw, a ball screw, or a hydrostatic lead screw. It should be noted that a lead screw is a transmission component that converts rotational motion into linear motion. It typically comprises a lead screw shaft and a nut. Specifically, the rotational motion of the lead screw shaft drives the nut to perform linear motion. The bearing assembly of the pressure detection module 201 may be fixedly connected to the nut, allowing the lead screw to drive the pressure detection module 201 to perform linear motion.

[0054] Exemplarily, the driving module 203 can adjust the position of the pressure detection module 201 in real time by controlling the movement distance of the slider 301 or the number of rotations of the above-mentioned screw shaft, so that the pressure detection module 201 can move relative to the nozzle and be aligned with the nozzle.

[0055] In one possible implementation, the operating status and operating sequence of each module and component can be remotely controlled by a controller, wherein the controller can be remotely controlled by logic control instructions or programming instructions.

[0056] For example, the algorithm programmable controller (PAC) can be used to control the drive module 203 to drive the transmission assembly 202 to move relative to the nozzle of the injection gas path, thereby aligning the position of the pressure detection module 201 provided on the transmission assembly 202 with the position of the nozzle, for example, so that each pressure sensor of the pressure detection module 201 corresponds to each nozzle. When the position of the pressure detection module 201 is aligned with the position of the nozzle, the algorithm programmable controller (PAC) continues to control the pressure detection module 201 to measure and collect gas pressure data at the nozzle.

[0057] For example, the pressure detection module 201 may be provided with an optical sensor, a visual recognition system, an encoder, a position sensor or other device for determining the position of an object to determine the alignment state between the pressure detection module 201 and the nozzle.

[0058] For example, when the pressure detection module 201 stops moving, the algorithm programming controller (PAC) controls the optical sensor of the pressure detection module 201 to detect whether there is a nozzle in front of the pressure sensor. When it is detected that there is a nozzle in front of the pressure sensor, feedback can be sent to the algorithm programming controller (PAC) to indicate that the pressure detection module 201 and the nozzle are aligned. Otherwise, the pressure detection module 201 continues to move a set distance and then stops, repeating the same detection until the algorithm programming controller (PAC) receives feedback that the pressure detection module 201 and the nozzle are aligned. The optical sensor can be a photoelectric switch, an infrared sensor, etc.

[0059] Optionally, when the pressure detection module 201 moves, the programmable algorithm controller (PAC) controls the visual recognition system of the pressure detection module 201 to perform real-time monitoring and image processing of the object in front. Specifically, a computer vision algorithm is used to identify whether the object in front is a nozzle. When a nozzle is detected in front of the pressure sensor, the programmable algorithm controller (PAC) can provide feedback that the pressure detection module 201 and the nozzle are aligned, thereby controlling the driving module 203 to stop driving. The visual recognition system may include a camera or other visual sensor.

[0060] Optionally, when the pressure detection module 201 stops moving, the programmable algorithm controller (PAC) controls the encoder or position sensor of the pressure detection module 201 to measure the position information of the object in front to determine whether the pressure sensors have reached the predetermined position aligned with each nozzle. When the encoder or position sensor detects that all pressure sensors have reached the predetermined position, it can provide feedback to the programmable algorithm controller (PAC) indicating that the pressure detection module 201 is aligned with the nozzle.

[0061] For example, after successfully collecting the gas pressure data at the nozzle, the algorithm workstation can determine the fault condition of the injection gas circuit based on the gas pressure data.

[0062] It should be noted that the aforementioned programming instructions and logic control instructions may be pre-stored in the controller for automatic execution, or sent in real time by the controller. For example, when the control instructions are pre-stored, the rotational speed and number of revolutions of the drive motor in the drive module 203 for driving the transmission assembly 202 may be pre-stored in the algorithm programming controller (PAC) based on the installation characteristics of the injection air path, thereby achieving linear motion of the pressure detection module 201 at a predetermined speed and / or predetermined distance.

[0063] The blowing air path detection device provided in the embodiment of the present application can collect the gas pressure data at the nozzle of the blowing air path by using the pressure detection module without stopping the blowing air path, and judge the working condition of the blowing air path based on the gas pressure data. Compared with the prior art of manual detection one by one when the blowing air path is stopped and invasive disassembly and assembly of the blowing air path, the present application uses an external pressure detection module to realize the working condition detection of the blowing air path in any working state without stopping the blowing air path or invasively disassembling the blowing air path, thereby improving the working condition detection efficiency of the blowing air path; in addition, it can timely process the dust accumulation of the blowing air path according to the working condition detection results, thereby improving the efficiency and accuracy of material sorting.

[0064] In another embodiment of the present application, a specific structure of a pressure detection module 201 is also provided. For example, FIG4 is a schematic diagram of a pressure detection module 201 provided in an embodiment of the present application. As shown in FIG4 , the pressure detection module 201 includes one or more pressure sensors 401, a driving cylinder 402, and a supporting assembly 403; wherein, the pressure sensor 401 and the driving cylinder 402 are arranged on the supporting assembly 403; and a measuring assembly 404 is provided at one end of each pressure sensor 401 close to the nozzle. Specifically, the driving cylinder 402 is used to drive the measuring assembly 404 of the pressure sensor 401 to move to a predetermined position of the nozzle, so that the measuring assembly 404 collects gas pressure data at the nozzle.

[0065] In this embodiment of the present application, the measuring assembly 404 on each pressure sensor 401 in the pressure detection module 201 is moved to a predetermined position near the nozzle to collect gas pressure data at the nozzle. The predetermined position of the nozzle can be inside the nozzle or anywhere where the jet airflow can be detected, such as 1-3 cm from directly in front of the nozzle. Compared to manually checking the working conditions of the jet air path one by one, using the measuring assembly 404 to collect data can improve the efficiency of detecting the working conditions of the jet air path.

[0066] For example, the measuring component 404 may be a measuring head that can be placed in the nozzle or in the blowing air path. Therefore, whether the pressure detection module 201 is aligned with the nozzle can be determined by the degree of alignment between the measuring head and the nozzle.

[0067] In one possible implementation, when the air injection circuit is shut down or not injecting gas, the measurement assembly 404 can be placed inside the nozzle for measurement. Figure 5 is a schematic diagram of the operation of a air injection circuit detection device provided in an embodiment of the present application. As shown in Figure 5, after the drive module 203 drives the transmission assembly 202 to align the pressure detection module 201 with the nozzle, the drive cylinder 402 in the pressure detection module 201 drives the measurement assembly 404 to insert into the nozzle.

[0068] It should be noted that when multiple rows of nozzles as shown in Figure 5 are set in the actual material sorting process, the driving module 203 can first change the inclination angle of the transmission component 202 to change the corresponding angle between the measuring component 404 and the nozzle, and then drive the cylinder 402 to enable the measuring component 404 to move, for example, in a direction perpendicular to the paper surface of Figure 4, so that the measuring component 404 can collect gas pressure data for different rows of nozzles at the same position of the transmission component 202.

[0069] For example, the transmission assembly 202 can be fixed to the spray assembly using a universal joint, and the tilt angle of the transmission assembly 202 can be changed using a motor or servo drive installed in the drive module 203 to ensure a one-to-one correspondence between the measurement assembly 404 and the nozzle. It should be noted that the specific tilt angle of the transmission assembly 202 can be controlled by a programmable algorithm controller (PAC).

[0070] For example, when the measuring assembly 404 needs to be placed inside the nozzle, the diameter of the measuring assembly 404 is smaller than the diameter of the nozzle. Furthermore, to minimize the impact of nozzle leakage on measurement results, the measuring assembly 404 and the nozzle must be tightly fitted together, leaving no gaps.

[0071] For example, as shown in FIG6 , the length of the nozzle is defined as the position from the upper corner to the opening. Therefore, based on the fact that the diameter of the measuring component 404 is smaller than the diameter of the nozzle, the length of the measuring component 404 must be smaller than the length from the upper corner to the opening to ensure that the measuring component 404 and the nozzle are highly fitted.

[0072] In one possible implementation, when the air injection path is in a state of injecting gas, the measuring component 404 can be positioned at any location where the injecting gas flow can be detected. For example, the measuring component 404 can be positioned perpendicular to the injecting gas flow to avoid interfering with the normal operation of the air injection path.

[0073] For example, the specific position of the measuring component 404 can be changed by adjusting the tilt angle of the transmission component 202 through the driving module 203; or the specific position of the measuring component 404 can be changed by driving the cylinder 402 to drive the measuring component 404 to move forward and backward.

[0074] It should be noted that the location of the measuring component 404 can be adjusted accordingly according to the real-time working status of the injection gas path.

[0075] For example, FIG6 is a cross-sectional schematic diagram of a blowing gas circuit 40 provided in an embodiment of the present application. As shown in FIG6 , when the blowing gas circuit is in a shutdown state or a state where no gas is being blown, the measuring component 404 of the pressure sensor 401 is inserted into the nozzle 60. At this time, the solenoid valve 50 on the blowing gas circuit is opened, and the gas enters the blowing gas circuit from this end of the solenoid valve and is transmitted to the nozzle. The measuring component 404 also completes the collection of the gas pressure data at the nozzle as the gas enters the blowing gas circuit. When the blowing gas circuit is in a state of blowing gas, the measuring component 404 of the pressure sensor 401 can be moved to a predetermined position where the blowing airflow can be detected without affecting the normal blowing operation, and the gas pressure data at the nozzle is collected as the gas is blown out of the nozzle.

[0076] It should be noted that when adjusting the pressure detection module 201 to be aligned with the nozzle, the nozzles can be grouped according to a preset number, and the pressure detection module 201 can also flexibly set the number of pressure sensors 401 according to the preset number value, and the interval size between each pressure sensor 401 can be set accordingly according to the size of the nozzle aperture to adapt to nozzles of different specifications.

[0077] For example, all nozzles from the left end to the right end in FIG5 can be grouped into groups of five nozzles. Accordingly, the pressure detection module 201 is provided with five pressure sensors 401, and the spacing between each pressure sensor 401 (specifically, the measurement component 404) is the same as the spacing between each nozzle. Therefore, the driving module 203 can drive the pressure detection module 201 to align with each group of nozzles in sequence according to the fixed distance between each group.

[0078] Optionally, the number of the pressure sensors 401 in the pressure detection module 201 may be set to one, so that the working conditions of the injection gas paths are detected one by one using the one pressure sensor 401 .

[0079] For example, after completing the collection of gas pressure data, the measuring component 404 of the pressure sensor 401 is restored to its original state, and the driving module 203 can drive the pressure detection module 201 to align with the next group of nozzles until the data collection of all nozzles is completed.

[0080] In a possible implementation, the driving cylinder 402 may drive all the measuring components 404 of the pressure sensor 401 to collect data, or may drive part of the measuring components 404 of the pressure sensor 401 to collect data.

[0081] For example, after all nozzles are grouped according to a preset number, and it is known that there are normal blowing air paths in each group, the driving cylinder 402 can be configured to drive only part of the measuring components 404 of the pressure sensor 401 for data collection.

[0082] For example, when it is known that the 1st, 3rd and 5th nozzles in the first group are operating normally, the driving cylinder 402 can be set to drive only the 2nd measuring component 404 and the 4th measuring component 404 for measurement when collecting data for this group of nozzles; and when it is known that the 2nd nozzle in the fourth group is operating normally, the driving cylinder 402 can be set to drive the measuring components except the 2nd measuring component 404 for measurement when collecting data for this group of nozzles.

[0083] In another embodiment of the present application, another specific structure of a pressure detection module 201 is provided. For example, FIG7 is a schematic diagram of another pressure detection module 201 provided in an embodiment of the present application. As shown in FIG7 , the pressure detection module 201 further includes a sliding assembly 701. The driving cylinder 402 is disposed on the sliding assembly 701 and moves along the main axis of the sliding assembly 701, which is parallel to the arrangement direction of the one or more pressure sensors 401.

[0084] Compared with the fixed setting of the driving cylinder 402, the sliding component 701 is used in the embodiment of the present application to improve the flexibility of the driving cylinder 402, thereby expanding the adaptability of the pressure sensor 401 in the measurement work.

[0085] In a possible implementation, the driving cylinder 402 is disposed on the sliding assembly 701, so that the driving cylinder 402 can complete the driving work of the pressure sensor 401 by moving its position on the sliding assembly 701. The sliding assembly 701 can be a slide rail.

[0086] For example, the installation direction of the sliding assembly 701 can be parallel to the arrangement direction of the pressure sensors 401 in the pressure detection module 201, that is, the installation direction of the sliding assembly 701 is the same as the main axis direction. For example, when the arrangement direction of the pressure sensors 401 is from left to right, the installation direction of the sliding assembly 701 is also from left to right. Correspondingly, the movement direction of the driving cylinder 402 provided in the sliding assembly 701 is also from left to right, thereby ensuring that the driving cylinder 402 can be arranged corresponding to the pressure sensor 401 in any case.

[0087] Illustratively, the length of the sliding assembly 701 may be the same as the length of all pressure sensor arrangements 401 in the pressure detection module 201 , or the same as the length of a partially continuous pressure sensor arrangement 401 in the pressure detection module 201 .

[0088] Another embodiment of the present application also provides a specific structure of a driving cylinder in a pressure detection module. For example, Figure 8 is a schematic diagram of a driving cylinder 402 provided in an embodiment of the present application. As shown in Figure 8, the driving cylinder 402 includes an energy storage component 801 and one or more driving components 802. The driving components 802 are positioned opposite the end of the pressure sensor 401 away from the measuring component 404.

[0089] In the embodiment of the present application, the flexible driving setting of the driving cylinder 402 can be used to specifically detect the specific working conditions of the blowing air path, effectively avoiding the loss of the measuring component 404 and improving the re-testing efficiency of the working conditions of the blowing air path.

[0090] In one possible implementation, the energy storage component 801 may be a metal piston cylinder, and the pushing component 802 may be a push rod. The metal piston cylinder is used to store energy, specifically by converting pressure energy into mechanical energy through the movement of the piston within the metal cylinder; the push rod is used to push, specifically by using the mechanical energy converted within the cylinder to move the measuring component 404 of the pressure sensor 401.

[0091] For example, the number of pushing components 802 at the front end of the driving cylinder 402 can be set according to the number of pressure sensors 401. For example, the number of pushing components 802 can be set to be the same as the number of pressure sensors 401, so that when the energy storage component 801 of the driving cylinder 402 is in effect, the pushing component 802 can push all the measuring components 404 to move at once.

[0092] It should be noted that the above-described arrangement of setting the number of push assemblies 802 to be the same as the number of pressure sensors 401 applies to both the drive cylinders 402 fixed to the pressure detection module 201 and the drive cylinders 402 arranged on the sliding assembly 701. When this arrangement of equal numbers is applied to the drive cylinders 402 on the sliding assembly 701, the positions of the push assemblies 802 need to be adjusted to correspond one-to-one with the pressure sensors 401 to prevent omission.

[0093] For example, the push assembly 802 can be selectively disposed at the front end of the driving cylinder 402 based on known operating conditions of the injection gas circuit and the arrangement of the pressure sensors 401. For example, when it is required to collect gas pressure data for the first and last nozzles in the above-mentioned different nozzle groups, the push assembly 802 can be disposed at the front end of the driving cylinder 402 corresponding to the first and last pressure sensors 401.

[0094] It should be noted that the above-mentioned selective arrangement of the pushing component 802 is also applicable to the driving cylinder 402 fixed on the pressure detection module 401 .

[0095] For example, when the driving cylinder 402 is a driving cylinder 402 on a sliding assembly 701, the sliding assembly 701 can be used to adjust the position of the pushing assembly 802 to correspond to the position of the pressure sensor 401, so any number of pushing assemblies 802 can be set at any position at the front end of the driving cylinder 402.

[0096] In another embodiment of the present application, the specific structure of the drive module 203 is also provided. For example, FIG9 is a schematic diagram of a drive module 203 provided in an embodiment of the present application. As shown in FIG9 , the drive module 203 includes a drive motor 901. Specifically, the drive motor 901 is used to drive the transmission assembly 202 to move the carrier assembly 403 along a first direction to adjust the position of the pressure detection module 201.

[0097] In the embodiment of the present application, the drive motor 901 drives the transmission assembly 202 to move the slider 301 or the carrier assembly 403 connected to the nut along the track 302, thereby enabling real-time adjustment of the position of the pressure detection module 201 so that the measurement assembly 404 of each pressure sensor 401 corresponds to each nozzle. The mobility of the carrier assembly 403 improves the flexibility of the pressure detection module 201 during movement.

[0098] In one possible implementation, the drive motor 901 may be a screw drive motor.

[0099] For example, a screw drive motor is used to drive a screw to perform linear motion. A drive motor is a motor that converts electrical energy into mechanical energy and can drive mechanical equipment to move by controlling the motor's speed, direction, and torque.

[0100] For example, the screw drive motor in the drive module 203 can be installed at one end or both ends of the screw shaft in the transmission assembly 202 .

[0101] In one possible implementation, the screw drive motor in the drive module 203 is used to drive the screw shaft in the transmission assembly 202 to rotate, thereby moving the nut along a first direction to a position corresponding to the nozzle position, so that the pressure detection module 201 fixed to the nut can be aligned with the nozzle. The first direction can be the arrangement direction of the nozzles. In some embodiments, the first direction can be the same as the main axis direction.

[0102] It should be noted that the purpose of adjusting the position of the pressure detection module 201 to be aligned with the nozzle position is to enable the pressure detection module 201 to collect effective gas pressure data at the nozzle.

[0103] In another embodiment of the present application, a processing method of the processing module in the blowing air path detection device is also provided. Exemplarily, the blowing air path detection device also includes a processing module 1001, wherein the processing module 1001 is connected to the pressure detection module 201, the transmission assembly 202 and the drive module 203. Specifically, Figure 10 is an operation flow chart of a processing module 1001 provided in an embodiment of the present application. As shown in Figure 10, the processing module 1001 is used to send a first control instruction to the drive module 203, instructing the drive module 203 to adjust the position of the pressure detection module 201 so that the pressure detection module 201 is aligned with the nozzle; and after the pressure detection module 201 is aligned with the nozzle, a second control instruction is sent to the pressure detection module 201, instructing the pressure detection module 201 to collect gas pressure data at the nozzle; and is also used to determine the working condition of the blowing air path based on the gas pressure data.

[0104] In the embodiment of the present application, the processing module 1001 is used to send instructions to each module, so that each module cooperates with each other to complete the detection of the working condition of the injection gas path.

[0105] In a possible implementation, the processing module 1001 may include the aforementioned programmable controller (PAC), programmable logic controller (PLC), and algorithm workstation.

[0106] Exemplarily, the programmable algorithm controller (PAC) sends a first control instruction to the drive module 203. In response to the first control instruction, the drive module 203 activates the drive motor 901 to drive the slider 301 to move along the track 302 or to rotate the lead screw shaft to move the nut, thereby aligning the position of the pressure detection module 201 disposed on the slider 301 or the nut with the position of the nozzle, and then aligning the measurement component 404 of the pressure sensor 401 of the pressure detection module 201 with (aligning with) the nozzle.

[0107] For example, the pressure detection module 201 can provide feedback to the processing module 1001 regarding its position information; the position information is information about the position of the pressure detection module 201 relative to the nozzle. For example, the pressure detection module 201 can provide feedback to the processing module 1001 based on a preset time period. For example, the position information can be provided using the aforementioned optical sensor, visual recognition system, encoder, or position sensor.

[0108] For example, when the position information fed back by the pressure detection module 201 indicates that the pressure sensor 401 is aligned with the nozzle, the algorithm programming controller (PAC) sends a second control instruction to the pressure detection module 201. In response to the second control instruction, the pressure detection module 201 activates the driving cylinder 402 and uses the pushing component 802 to push the measuring component 404 of the pressure sensor 401, causing the measuring component 404 to move to the predetermined position of the nozzle. After the measuring component 404 of the pressure sensor 401 successfully moves to the predetermined position, the gas pressure data at the nozzle is collected.

[0109] For example, after successfully collecting the gas pressure data at the nozzle, the algorithm workstation determines the specific working conditions of the corresponding injection gas path based on the gas pressure data.

[0110] It should be noted that when the air injection circuit 40 is shut down or not injecting gas, the programmable algorithm controller (PAC) can activate the gas source device 10 before sending the first control command to the driver module 203. The gas source device 10 transmits gas from the end of the air injection circuit 40 away from the nozzle to the air injection circuit 40. At this time, the solenoid valve in the air injection circuit 40 is in the closed state. After the measurement component 404 is successfully inserted into the nozzle, the solenoid valve in the air injection circuit 40 is turned to the open state, gas enters the air injection circuit 40, and the measurement component 404 begins to collect gas pressure data at the nozzle.

[0111] In another embodiment of the present application, a material sorting system including the aforementioned air blowing path detection device is provided. Exemplarily, the material sorting system includes the air blowing path detection device and a blowing assembly; the blowing assembly includes a plurality of air blowing paths arranged in an array; the blowing assembly and the air blowing path detection device are aligned.

[0112] In an embodiment of the present application, by including a material sorting system composed of the above-mentioned blowing air path detection device, the blowing air path detection device can be used to judge the specific working condition of the blowing air path under any working state of the blowing air path, thereby improving the working condition detection efficiency of the blowing air path, and then improving the efficiency and accuracy of material sorting.

[0113] In one possible implementation, FIG11 is a schematic diagram of the structure of a material sorting system provided in an embodiment of the present application. As shown in FIG11 , the material sorting system includes a blowing air path detection device 1101 and a blowing assembly 20. The blowing assembly 1102 includes a row of blowing air paths, each of which includes a nozzle 60 and a high-speed solenoid valve 50 for controlling the nozzle to perform the blowing action.

[0114] For example, the pressure detection module 201 in the blowing air path detection device is aligned with the nozzle in the blowing assembly to achieve the relative arrangement of the blowing assembly and the blowing air path detection device.

[0115] It should be noted that the material sorting system can be an intelligent sorting machine. The number, specifications, and layout of the air injection paths in the material sorting system can be determined based on the width of the intelligent sorting machine and the size of the sorted particles. For example, when the intelligent sorting machine is wide and the sorted particle size is small, the number of air injection paths in the material sorting system can be increased accordingly.

[0116] In one possible implementation, the material sorting system can utilize a sorting spray controller, a central control controller, and an algorithm control station to complete the material sorting process. The sorting spray controller can be a programmable automation controller (PAC), while the central control controller can be a logic controller (PLC).

[0117] It should be noted that the algorithm control station is set up because the computing power of the programmable automation controller (PAC) is limited. In order to ensure the accuracy of the results, the image acquisition, processing and recognition functions can be separated from the programmable automation controller (PAC) to facilitate the expansion of the image recognition function in subsequent material sorting operations.

[0118] For example, FIG12 is a control diagram of a material sorting system provided in an embodiment of the present application. As shown in FIG12 , during the material sorting process, the blowing air circuit is in operation, and the logic controller (PLC) is mainly responsible for starting and shutting down the gas source device 10; the programmable automation controller (PAC) is mainly responsible for executing the blowing operation, controlling the state of the solenoid valve, and collecting gas pressure data. Specifically, when the blowing air circuit is connected to the gas, the blowing air circuit detection device can be controlled to collect the gas pressure data at the nozzle; the algorithm control station is mainly responsible for the blowing logic and the processing and analysis of the gas pressure data during the sorting process. Specifically, the working condition of the blowing air circuit can be determined based on the gas pressure data. It should be noted that the start and stop of the entire material sorting process can be controlled by a remote control station.

[0119] Specifically, when the remote control station activates the material sorting system, it first communicates with the central control logic controller (PLC), which then communicates with the programmable automation controller (PAC). The PAC, based on the injection logic provided by the algorithm control station, collects gas pressure data at the nozzle from the injection gas path detection device. The PAC then transmits this data to the algorithm control station for data processing and diagnosis of the injection gas path's operating conditions, ultimately returning the diagnostic results to the remote control station.

[0120] For example, based on the operating results received by the remote control station, the abnormal operating conditions of the injection gas path can be promptly handled. For example, the injection force of the injection gas path with a minor blockage can be increased, or the injection gas path with a serious blockage can be promptly repaired and replaced.

[0121] In one possible implementation, the algorithm control station diagnoses the operating conditions of the injection gas circuits by comparing the actual response time of the gas pressure data with the calibrated response time. The calibrated response time is the time corresponding to a change in the gas pressure data at the nozzle when the injection gas circuit is in normal and trouble-free operating conditions.

[0122] For example, before performing a working condition test on the actual air injection circuit, the air injection circuit test device is first installed on a normal, fault-free air injection assembly. The measurement component in the pressure detection module collects gas pressure data at the nozzle of the air injection circuit under normal conditions and transmits the data to the algorithm control station. The algorithm control station generates a calibration response curve for the air injection circuit based on the gas pressure data at different times.

[0123] FIG13 is a schematic diagram of a calibration response curve of a spray gas path provided in an embodiment of the present application. As shown in FIG13 , T o T can be the moment when the solenoid valve receives the electrical signal and switches to the open state; do T can be the time from when the solenoid valve receives the electrical signal and switches to the open state to when the gas pressure data at the nozzle rises to 5% of the rated pressure; mo It can be the time taken for the gas pressure at the nozzle to rise from 5% of the rated pressure to 95% of the rated pressure; T c T can be the moment when the solenoid valve receives the electrical signal and switches to the closed state; dc T can be the time from when the solenoid valve receives the electrical signal to switch to the closed state to when the gas pressure data at the nozzle drops to 95% of the rated pressure; mc It can be the time taken for the gas pressure at the nozzle to drop from 95% of the rated pressure to 5% of the rated pressure.

[0124] It should be noted that the above calibration response curve corresponds to one calibration curve for each injection gas path. For example, the time corresponding to the gas pressure data being 5% may be the 5th second after the solenoid valve on the injection gas path is opened.

[0125] For example, after the calibration response curve is drawn, a fault detection of the injection gas path is performed on an injection assembly of the same specifications and with unknown operating conditions. After the fault detection is completed, the collected gas pressure data is also transmitted to the algorithm control station, which generates the actual response curve of the injection gas path.

[0126] Specifically, the working condition of the blowing gas circuit can be judged by the response time of the opening and closing stages of the blowing action. Among them, the calibrated response time of the opening stage of the blowing action is defined as the time T from the time the solenoid valve receives the electrical signal to switch to the open state to the time the gas pressure data at the nozzle rises to 5% of the rated pressure. do The time T taken for the gas pressure at the nozzle to rise from 5% of the rated pressure to 95% of the rated pressure mo The calibrated response time of the closing stage of the spray action is defined as the time T from when the solenoid valve receives the electrical signal to switch to the closed state to when the gas pressure data at the nozzle drops to 95% of the rated pressure dcThe time T taken for the gas pressure at the nozzle to drop from 95% of the rated pressure to 5% of the rated pressure mc sum.

[0127] In another embodiment of the present application, a specific installation location of the blowing air path detection device is also provided. For example, the blowing air path detection device is detachably mounted on the blowing assembly, near the nozzle of the blowing air path.

[0128] In the embodiment of the present application, the blowing air path detection device can be detachably installed on the blowing assembly, which makes the installation position of the detection device more flexible, and can quickly determine the faulty blowing air path when an abnormal working condition of the blowing assembly is detected.

[0129] For example, when the approximate location of the blowing assembly with abnormal working conditions is obtained, the blowing air path detection device can be directly installed at the abnormal position of the blowing assembly, and the measuring component in the pressure detection module can be aligned with the nozzle at the abnormal position.

[0130] In another embodiment of the present application, an installation method of the blowing air path detection device is also provided. Exemplarily, the transmission assembly includes a first assembly component, the blowing assembly includes a second assembly component, and the first assembly component and the second assembly component are detachably connected.

[0131] For example, the first assembly component can be disposed at the bottom of the transmission assembly; the second assembly component can be disposed at the top of the blowing assembly; the connection and cooperation between the first assembly component and the second assembly component realizes the detachability of the blowing air path detection device. The first assembly component and the second assembly component can be slide rails.

[0132] For example, the first component arranged at the bottom of the transmission assembly can be a convex slide rail, and the second component arranged at the top of the blowing assembly can be a concave slide rail. The convex slide rail is snapped into the concave slide rail to achieve a detachable connection between the first component and the second component.

[0133] It should be noted that the implementation of the above-mentioned combination components is not limited to slide rails. Any components that are detachably connected and can move smoothly can be used as combination components, and this application does not impose any specific restrictions.

[0134] In another embodiment of the present application, FIG14 is a flow chart of a control method of a blower gas path detection device provided in an embodiment of the present application. Referring to FIG14 , the control method may include the following steps.

[0135] In step S1401 , the driving module 203 is controlled to drive the transmission assembly 202 to move, so that the transmission assembly 202 drives the pressure detection module 201 to be aligned with the nozzle.

[0136] Step S1402 : After the pressure detection module 201 is aligned with the nozzle, the pressure detection module 201 is controlled to collect gas pressure data at the nozzle.

[0137] Step S1403 , determining the working condition of the injection gas path according to a comparison result of the error between the actual response time and the calibrated response time of the gas pressure data and a preset threshold value.

[0138] In one possible implementation, the working condition of the injection gas path can be determined by comparing the actual response time with the calibrated response time.

[0139] For example, when the error between the actual response time and the calibrated response time is greater than a preset threshold, it can be directly determined that the working condition of the injection gas path is abnormal.

[0140] It should be noted that, due to different requirements for blowing performance under different working conditions, the preset threshold value can be continuously adjusted. Specifically, the preset threshold value can be the difference between the calibrated response time of the blowing action on stage and the calibrated response time of the blowing action off stage.

[0141] For example, when the actual response time of the opening phase of the injection action of a certain injection gas path is greater than the calibration time T do and calibration time T mo When the sum of the two does not exceed the preset threshold, it is judged that the blowing gas path is in normal condition; when the actual response time of the blowing action opening phase of a certain blowing gas path is greater than the calibration time T do and calibration time T mo When the sum of the above values ​​exceeds the preset threshold, it indicates that the blowing performance of the blowing gas path has deteriorated and there is a blockage in the blowing gas path, which requires timely repair or replacement.

[0142] In another embodiment of the present application, FIG15 is a flow chart of another control method of a blower gas path detection device provided in an embodiment of the present application. Referring to FIG15 , the control method may include the following steps.

[0143] In step S1501 , the algorithm programming controller (PAC) controls the driving motor to drive the slider 301 to move along the track 302 or to drive the screw shaft to rotate and drive the nut to move, so that the pressure detection module 201 is aligned with the nozzle.

[0144] Exemplarily, the pressure detection module 201 may be fixed to the slider 301 or the nut via the bearing assembly 403 .

[0145] In one possible implementation, the drive motor 901 can determine the start and stop status of the linear guide or the lead screw according to the position of the nozzle. For example, when the pressure detection module 201 fixedly connected to the slider 301 of the linear guide is aligned with the nozzle, the drive motor 901 stops driving the linear guide.

[0146] Step S1502, when the pressure detection module 201 stops moving, the algorithm programming controller (PAC) responds to the alignment of the pressure detection module 201 and the nozzle, and controls the driving cylinder 402 to move the measuring component 404 in the pressure detection module 201 to the predetermined position of the nozzle.

[0147] In a possible implementation, when the pressure detection module 201 is aligned with the nozzle, the measurement component 404 in the pressure detection module 201 corresponds to (is aligned with) the nozzle.

[0148] For example, the driving cylinder 402 may be used to release energy to move the measuring component 404 to a predetermined position of the nozzle by pushing the component 802 .

[0149] In step S1503 , when the measuring component 404 stops moving, the algorithm programming controller (PAC) controls the measuring component 404 to collect gas pressure data at the nozzle in response to the measuring component 404 moving to a predetermined position of the nozzle.

[0150] In a possible implementation, the predetermined position of the nozzle may include a position inside the nozzle and a position near the nozzle.

[0151] For example, when the blowing gas circuit is in a stopped state or not blowing gas, the measuring component 404 can be inserted into the nozzle; at this time, the solenoid valve of the blowing gas circuit can be opened to allow the gas inside the blowing gas circuit to flow through.

[0152] Optionally, when the blowing air path is in operation, the measuring component 404 can be moved to any position where the blowing air flow can be detected.

[0153] For example, when the measuring component 404 moves to a predetermined position of the nozzle, the measuring component 404 collects the gas pressure data at the nozzle that changes with time and sends the collected data to the processing module 1001. The processing module 1001 determines the working condition of the injection gas circuit according to the gas pressure data.

[0154] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0155] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0156] The above embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A blowing gas path detection device, characterized in that: Used to detect the working condition of the injection gas circuit, the injection gas circuit detection device includes a pressure detection module, a transmission component and a drive module; the drive module is connected to the transmission component, and the transmission component is connected to the pressure detection module; The driving module is used to drive the transmission assembly to drive the pressure detection module to move relative to the nozzle, so that the pressure detection module is aligned with the nozzle; The pressure detection module is used to collect gas pressure data at the nozzle after the pressure detection module is aligned with the nozzle, and the gas pressure data is used to determine the working condition of the injection gas circuit.

2. The blowing gas path detection device according to claim 1, characterized in that: The pressure detection module includes one or more pressure sensors, a driving cylinder and a bearing assembly; the pressure sensor and the driving cylinder are arranged on the bearing assembly; a measuring assembly is arranged at one end of each pressure sensor close to the nozzle; The driving cylinder is used to drive the measuring component of the pressure sensor to move to a predetermined position of the nozzle, so that the measuring component collects gas pressure data at the nozzle.

3. The blowing gas path detection device according to claim 2, characterized in that: The pressure detection module further includes a sliding assembly, the driving cylinder is disposed on the sliding assembly and moves along a main axis direction of the sliding assembly, and the main axis direction is parallel to an arrangement direction of the one or more pressure sensors.

4. The blowing gas path detection device according to claim 2 or 3, characterized in that: The driving cylinder includes an energy storage component and one or more pushing components, and the pushing component is arranged opposite to an end of the pressure sensor away from the measuring component.

5. The blowing gas path detection device according to claim 4, characterized in that: The driving module includes a driving motor; The driving motor is used to drive the transmission assembly to drive the bearing assembly to move along a first direction to adjust the position of the pressure detection module.

6. The blowing gas path detection device according to claim 1, characterized in that: The blowing gas path detection device further comprises a processing module, and the processing module is connected to the pressure detection module, the transmission assembly and the driving module; The processing module is configured to send a first control instruction to the driving module, instructing the driving module to adjust the position of the pressure detection module so that the pressure detection module is aligned with the nozzle; and after the pressure detection module is aligned with the nozzle, send a second control instruction to the pressure detection module, instructing the pressure detection module to collect gas pressure data at the nozzle; It is also used to determine the working condition of the injection gas circuit according to the gas pressure data.

7. A material sorting system, characterized in that: The material sorting system comprises the blowing air path detection device and a blowing assembly as described in any one of claims 1 to 6; the blowing assembly comprises a plurality of blowing air paths arranged in an array; the blowing assembly is arranged in alignment with the blowing air path detection device.

8. The material sorting system according to claim 7, characterized in that: The blowing air path detection device is detachably mounted on the blowing assembly.

9. The material sorting system according to claim 8, characterized in that: The transmission assembly includes a first assembly component, and the blowing assembly includes a second assembly component. The first assembly component and the second assembly component are detachably connected.

10. A control method, characterized in that: Applied to the blowing gas path detection device according to any one of claims 1 to 6, the method comprising: Controlling the driving module to drive the transmission assembly to move, so that the transmission assembly drives the pressure detection module to be aligned with the nozzle; After the pressure detection module is aligned with the nozzle, controlling the pressure detection module to collect gas pressure data at the nozzle; The working condition of the injection gas circuit is determined according to a comparison result of a numerical value of an error between an actual response time and a calibrated response time of the gas pressure data and a preset threshold.

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